Ford Explorer Quiz
Electrical

Diagnosis and Testing - Headlamps

In this manual: Electrical
General Information — 41Chassis — 173Powertrain — 250Electrical — 303Body and Paint — 331
~92min read

Diagnostic Trouble Code (DTC) Chart

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).


Diagnostic Trouble Code Chart


Module Trouble Code Description Action
BCM B14E0:11 Exterior Lamp Power Supply "C": Short to Ground GO to Pinpoint Test A
BCM B14E0:15 Exterior Lamp Power Supply "C": Short to Battery or Open Circuit GO to Pinpoint Test A
BCM B14E1:11 Exterior Lamp Power Supply "D": Short to Ground GO to Pinpoint Test A
BCM B14E1:15 Exterior Lamp Power Supply "D": Short to Battery or Open Circuit GO to Pinpoint Test A
BCM B14E2:11 Exterior Lamp Power Supply "E": Short to Ground GO to Pinpoint Test S
BCM B14E2:15 Exterior Lamp Power Supply "E": Short to Battery or Open Circuit GO to Pinpoint Test S
BCM B14E3:11 Exterior Lamp Power Supply "F": Short to Ground GO to Pinpoint Test S
BCM B14E3:15 Exterior Lamp Power Supply "F": Short to Battery or Open Circuit GO to Pinpoint Test S
BCM B14E5:01 Left Front Advanced Exterior Lighting System: General Electrical Failure GO to Pinpoint Test B
BCM B14E5:01 Left Front Advanced Exterior Lighting System: General Electrical Failure GO to Pinpoint Test G
BCM B14E5:08 Left Front Advanced Exterior Lighting System: Bus Signal/Message Failure GO to Pinpoint Test B
BCM B14E5:08 Left Front Advanced Exterior Lighting System: Bus Signal/Message Failure GO to Pinpoint Test G
BCM B14E5:1C Left Front Advanced Exterior Lighting System: Circuit Voltage Out of Range GO to Pinpoint Test B
BCM B14E5:1C Left Front Advanced Exterior Lighting System: Circuit Voltage Out of Range GO to Pinpoint Test G
BCM B14E5:49 Left Front Advanced Exterior Lighting System: Internal Electronic Failure GO to Pinpoint Test B
BCM B14E5:49 Left Front Advanced Exterior Lighting System: Internal Electronic Failure GO to Pinpoint Test G
BCM B14E5:55 Left Front Advanced Exterior Lighting System: Not Configured GO to Pinpoint Test B
BCM B14E5:55 Left Front Advanced Exterior Lighting System: Not Configured GO to Pinpoint Test G
BCM B14E5:61 Left Front Advanced Exterior Lighting System: Signal Calculation Failure GO to Pinpoint Test B
BCM B14E5:61 Left Front Advanced Exterior Lighting System: Signal Calculation Failure GO to Pinpoint Test G
BCM B14E7:01 Right Front Advanced Exterior Lighting System: General Electrical Failure GO to Pinpoint Test B
BCM B14E7:01 Right Front Advanced Exterior Lighting System: General Electrical Failure GO to Pinpoint Test G
BCM B14E7:08 Right Front Advanced Exterior Lighting System: Bus Signal/Message Failure GO to Pinpoint Test B
BCM B14E7:08 Right Front Advanced Exterior Lighting System: Bus Signal/Message Failure GO to Pinpoint Test G
BCM B14E7:1C Right Front Advanced Exterior Lighting System: Circuit Voltage Out of Range GO to Pinpoint Test B
BCM B14E7:1C Right Front Advanced Exterior Lighting System: Circuit Voltage Out of Range GO to Pinpoint Test G
BCM B14E7:49 Right Front Advanced Exterior Lighting System: Internal Electronic Failure GO to Pinpoint Test B
BCM B14E7:49 Right Front Advanced Exterior Lighting System: Internal Electronic Failure GO to Pinpoint Test G
BCM B14E7:55 Right Front Advanced Exterior Lighting System: Not Configured GO to Pinpoint Test B
BCM B14E7:55 Right Front Advanced Exterior Lighting System: Not Configured GO to Pinpoint Test G
BCM B14E7:61 Right Front Advanced Exterior Lighting System: Signal Calculation Failure GO to Pinpoint Test B
BCM B14E7:61 Right Front Advanced Exterior Lighting System: Signal Calculation Failure GO to Pinpoint Test G
BCM B1533:02 Headlamp Switch Module: General Signal Failure GO to Pinpoint Test A
BCM B1533:08 Headlamp Switch Module: Bus Signal/Message GO to Pinpoint Test A
BCM B1533:49 Headlamp Switch Module: Internal Electronic Failure GO to Pinpoint Test A
BCM B1533:56 Headlamp Switch Module: Incorrect/Incompatible Configuration GO to Pinpoint Test A
BCM B1D00:11 Low Beam Left: Short to Ground GO to Pinpoint Test A
BCM B1D00:15 Low Beam Left: Short to Battery or Open Circuit GO to Pinpoint Test A
BCM B1D01:11 Low Beam Right: Short to Ground GO to Pinpoint Test A
BCM B1D01:15 Low Beam Right: Short to Battery or Open Circuit GO to Pinpoint Test A
BCM B1D02:11 High Beam Circuit Left: Short to Ground GO to Pinpoint Test S
BCM B1D02:15 High Beam Circuit Left: Short to Battery or Open Circuit GO to Pinpoint Test S
BCM B1D03:11 High Beam Circuit Right: Short to Ground GO to Pinpoint Test S
BCM B1D03:15 High Beam Circuit Right: Short to Battery or Open Circuit GO to Pinpoint Test S
HS-CAN B1041:04 Levelling Control: Internal System Failure GO to Pinpoint Test H
HS-CAN B1041:54 Levelling Control: Calibration Missing GO to Pinpoint Test H
HS-CAN B1087:83 LIN Bus "A": Incorrect Signal Protection Calculation Value GO to Pinpoint Test C
HS-CAN B1087:86 LIN Bus "A": Invalid Signal GO to Pinpoint Test C
HS-CAN B1088:83 LIN Bus "B": Incorrect Signal Protection Calculation Value GO to Pinpoint Test C
HS-CAN B1088:86 LIN Bus "B": Incorrect Signal GO to Pinpoint Test C
HS-CAN B1437:01 Left Levelling Actuator: General Electrical Failure GO to Pinpoint Test I
HS-CAN B1437:87 Left Levelling Actuator: Missing Message GO to Pinpoint Test G
HS-CAN B1439:01 Right Levelling Actuator: General Electrical Failure GO to Pinpoint Test I
HS-CAN B1439:87 Right Levelling Actuator: Missing Message GO to Pinpoint Test G
HS-CAN B14D9:01 Left Headlamp Beam Distribution Actuator: General Electrical Failure GO to Pinpoint Test C
HS-CAN B14D9:01 Left Headlamp Beam Distribution Actuator: General Electrical Failure GO to Pinpoint Test I
HS-CAN B14D9:64 Left Headlamp Beam Distribution Actuator: Signal Invalid GO to Pinpoint Test C
HS-CAN B14D9:64 Left Headlamp Beam Distribution Actuator: Signal Invalid GO to Pinpoint Test I
HS-CAN B14D9:87 Left Headlamp Beam Distribution Actuator: No Sub Type Message GO to Pinpoint Test C
HS-CAN B14DA:01 Right Headlamp Beam Distribution Actuator: General Electrical Failure GO to Pinpoint Test C
HS-CAN B14DA:01 Right Headlamp Beam Distribution Actuator: General Electrical Failure GO to Pinpoint Test I
HS-CAN B14DA:64 Right Headlamp Beam Distribution Actuator: Signal Invalid GO to Pinpoint Test C
HS-CAN B14DA:64 Right Headlamp Beam Distribution Actuator: Signal Invalid GO to Pinpoint Test I
HS-CAN B14DA:87 Right Headlamp Beam Distribution Actuator: No Sub Type Message GO to Pinpoint Test C
HS-CAN B14DB:01 Left Headlamp Driver Control System: General Electrical Failure GO to Pinpoint Test C
HS-CAN B14DB:01 Left Headlamp Driver Control System: General Electrical Failure GO to Pinpoint Test I
HS-CAN B14DB: 54 Left Headlamp Driver Control System: Calibration Missing GO to Pinpoint Test C
HS-CAN B14DB: 54 Left Headlamp Driver Control System: Calibration Missing GO to Pinpoint Test I
HS-CAN B14DB: 55 Left Headlamp Driver Control System: Not Configured GO to Pinpoint Test C
HS-CAN B14DB: 55 Left Headlamp Driver Control System: Not Configured GO to Pinpoint Test I
HS-CAN B14DB:87 Left Headlamp Driver Control System: Missing Message GO to Pinpoint Test C
HS-CAN B14DC:01 Right Headlamp Driver Control System: General Electrical Failure GO to Pinpoint Test C
HS-CAN B14DC:01 Right Headlamp Driver Control System: General Electrical Failure GO to Pinpoint Test I
HS-CAN B14DC:54 Right Headlamp Driver Control System: Calibration Missing GO to Pinpoint Test C
HS-CAN B14DC:54 Right Headlamp Driver Control System: Calibration Missing GO to Pinpoint Test I
HS-CAN B14DC:55 Right Headlamp Driver Control System: Not Configured GO to Pinpoint Test C
HS-CAN B14DC:55 Right Headlamp Driver Control System: Not Configured GO to Pinpoint Test I
HS-CAN B14DC:87 Right Headlamp Driver Control System: Missing Message GO to Pinpoint Test C
HS-CAN B1559:96 Left Headlamp: Internal Component Failure GO to Pinpoint Test I
HS-CAN B155A: 96 Right Headlamp: Internal Component Failure GO to Pinpoint Test I
HS-CAN B15A6:01 Right Matrix Controller Actuator: General Electrical Failure GO to Pinpoint Test C
HS-CAN B15A6:01 Right Matrix Controller Actuator: General Electrical Failure GO to Pinpoint Test I
HS-CAN B15A6:87 Right Matrix Controller Actuator: No Sub Type Message GO to Pinpoint Test C
HS-CAN B15A6:87 Right Matrix Controller Actuator: No Sub Type Message GO to Pinpoint Test G
HS-CAN B15A7:01 Left Matrix Controller Actuator: General Electrical Failure GO to Pinpoint Test C
HS-CAN B15A7:01 Left Matrix Controller Actuator: General Electrical Failure GO to Pinpoint Test I
HS-CAN B15A7:87 Left Matrix Controller Actuator: No Sub Type Message GO to Pinpoint Test C
HS-CAN B15A7:87 Left Matrix Controller Actuator: No Sub Type Message GO to Pinpoint Test G
HS-CAN B1A59:1C 5 V Sensor Supply: Circuit Voltage Out of Range GO to Pinpoint Test H
HS-CAN B1D64:01 Left Headlamp Swivel Motor: General Electrical Failure GO to Pinpoint Test I
HS-CAN B1D64:87 Left Headlamp Swivel Motor: No Sub Type Message GO to Pinpoint Test G
HS-CAN B1D65:01 Right Headlamp Swivel Motor: General Electrical Failure GO to Pinpoint Test I
HS-CAN B1D65:87 Right Headlamp Swivel Motor: No Sub Type Message GO to Pinpoint Test G
HS-CAN B1D68:64 Left Headlamp Swivel Sensor: Signal Invalid GO to Pinpoint Test I
HS-CAN B1D69:64 Right Headlamp Swivel Feedback Sensor: Signal Invalid GO to Pinpoint Test I
HS-CAN C1A03:12 Left Front Height Sensor: Short to Battery GO to Pinpoint Test H
HS-CAN C1A03:14 Left Front Height Sensor: Short to Ground or Open Circuit GO to Pinpoint Test H
HS-CAN C1A03:29 Left Front Height Sensor: Incorrect Signal GO to Pinpoint Test H
HS-CAN C1A03:64 Left Front Height Sensor: Signal Not Plausible GO to Pinpoint Test H
HS-CAN C1A05:12 Left Rear Height Sensor: Short to Battery GO to Pinpoint Test H
HS-CAN C1A05:14 Left Rear Height Sensor: Short to Ground or Open Circuit GO to Pinpoint Test H
HS-CAN C1A05:29 Left Rear Height Sensor: Incorrect Signal GO to Pinpoint Test H
HS-CAN C1A05:64 Left Rear Height Sensor: Signal Not Plausible GO to Pinpoint Test H
HS-CAN U0121:00 Lost Communication with Anti-Lock Braking System (ABS) Control Module: No Sub-Type Information GO to Pinpoint Test J
HS-CAN U0146:00 Lost Communication with Serial Data Gateway "A": No Sub-Type Information GO to Pinpoint Test K
HS-CAN U0151:00 Lost Communication with Restraints Control Module: No Sub Type Information GO to Pinpoint Test M
HS-CAN U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information GO to Pinpoint Test L
HS-CAN U023A:00 Lost Communication with Image Processing Module A: No Sub Type Information GO to Pinpoint Test N
HS-CAN U0415:00 Incorrect Data Received from Anti-Lock Braking System (ABS) Control Module: No Sub-Type Information GO to Pinpoint Test P
HS-CAN U0429:00 Incorrect Data Received from Steering Column Control Module: No Sub-Type Information GO to Pinpoint Test P
HS-CAN U0447:00 Invalid data received from serial data gateway "A": no subtype information GO to Pinpoint Test P
HS-CAN U0452:00 Incorrect Data Received from Restraints Control Module: No Sub Type Information GO to Pinpoint Test P
HS-CAN U053B:00 Invalid Data Received from Image Processing Module A: No Sub Type Information GO to Pinpoint Test P
HS-CAN U2024:51 Control Module Calibration Data: Not Programmed GO TO Pinpoint Test O
HS-CAN U2024:57 Control module calibration data: incorrect/incompatible software component GO TO Pinpoint Test O
HS-CAN U2100:00 Initial Configuration Not Complete: No Sub Type Information GO TO Pinpoint Test O
HS-CAN U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO TO Pinpoint Test O
HS-CAN U2101:56 Control module configuration incompatible: incorrect/incompatible configuration GO TO Pinpoint Test O
HS-CAN U2101:86 Control module configuration incompatible: incorrect signal GO TO Pinpoint Test O
HS-CAN U2200:45 Control module configuration memory corrupted: software memory failure GO TO Pinpoint Test O
HS-CAN U3000:45 Control module: software memory failure GO TO Pinpoint Test O
HS-CAN U3000:46 Control module: calibration / parameter memory failure GO TO Pinpoint Test O
HS-CAN U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test Q
HS-CAN U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO TO Pinpoint Test R
SCCM B124K:96 Multifunction switch turn signal assembly: internal component fault GO to Pinpoint Test F
SCCM B124K:9E Turn signal switch pack: stuck in on position GO to Pinpoint Test F

Symptom Chart

Symptom Chart: Headlamps

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Condition Possible Sources Action
Module Does Not Respond to Diagnostic Scan Tool
  • Fuse
  • Wiring, Terminals or Connectors
  • Module
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
One or both low beams inoperative or always on Refer to Pinpoint Test GO to Pinpoint Test A
One or both low beams inoperative or always on — low series headlamps Refer to Pinpoint Test GO to Pinpoint Test B
One or both high beams inoperative or always on — high series headlamps Refer to Pinpoint Test GO to Pinpoint Test C
Flash-to-pass function inoperative Refer to Pinpoint Test GO to Pinpoint Test D
Automatic high beam function inoperative Refer to Pinpoint Test GO to Pinpoint Test E
Automatic headlamp leveling or adaptive front lighting inoperative or malfunctioning Refer to Pinpoint Test GO to Pinpoint Test G

Pinpoint Tests


PINPOINT TEST A: ONE OR BOTH LOW BEAMS INOPERATIVE OR ALWAYS ON

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
BCM B14E0:11 Exterior Lamp Power Supply "C": Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the left low beam output circuit.
BCM B14E0:15 Exterior Lamp Power Supply "C": Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the left low beam output circuit.
BCM B14E1:11 Exterior Lamp Power Supply "D": Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the right low beam output circuit.
BCM B14E1:15 Exterior Lamp Power Supply "D": Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the right low beam output circuit.
BCM B1533:02 Headlamp Switch Module: General Signal Failure Continuous memory and on-demand DTC that sets when the BCM detects missing data from messages sent by the headlamp switch over the LIN circuit.
BCM B1533:08 Headlamp switch module: bus signal/message failures Continuous memory and on-demand DTC that sets when the BCM loses communication with the headlamp switch over the LIN circuit.
BCM B1533:49 Headlamp Switch Module: Internal Electronic Failure Continuous memory and on-demand DTC that sets when the BCM receives a message from the headlamp switch over the LIN circuit indicating an internal headlamp switch fault.
BCM B1533:56 Headlamp Switch Module: Incorrect/Incompatible Configuration Continuous memory and on-demand DTC that sets when the BCM detects over the LIN circuit that the headlamp switch is configured incorrectly.
BCM B1D00:11 Low Beam Left: Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the left low beam output circuit.
BCM B1D00:15 Low Beam Left: Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the left low beam output circuit.
BCM B1D01:11 Low Beam Right: Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the right low beam output circuit.
BCM B1D01:15 Low Beam Right: Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the right low beam output circuit.

Possible Sources

  • Headlamp Assembly
  • Wiring, Terminals or Connectors
  • BCM

Visual Inspection and Pre-checks

  • Inspect the headlamp assembly for damage.
  • Inspect the headlamp switch for damage.
  • Inspect BCM fuse 19 (5A).
A1 CHECK LOW BEAM OPERATION
  • The ignition is on.
  • Turn the headlamp switch to the OFF position.
  • Observe the operation of the left and right low beams.
  • Set the headlamp switch to the HEADLAMPS position.
  • Observe the operation of the left and right low beams.

Is one of the low beams always on?
Yes GO to A2
No GO to A10
A2 DETERMINE IF BOTH LOW BEAMS ARE ALWAYS ON
  • Turn the headlamp switch to the OFF position.
  • Observe the operation of the left and right low beams.

Are both low beams on?
Yes GO to A3
No GO to A9
A3 CHECK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • The ignition is on.
  • Using a scan tool, perform the BCM self-test.

Is DTC B1533:02, B1533:08, B1533:49 or B1533:56 present?
Yes For BCM DTC B1533:02 or B1533:08, GO to A4.
For BCM DTC B1533:49, INSTALL a new headlamp switch.
REFER TO: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation). For BCM DTC B1533:56, using the diagnostic scan tool, perform the BCM New Local Interconnect Network (LIN) Module Initialization procedure. Follow the diagnostic scan tool instructions. If the initialization procedure fails, INSTALL a new headlamp switch.
REFER TO: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).
No GO to A9
A4 CHECK THE HEADLAMP SWITCH POWER SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Headlamp Switch C205.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C205-8 Ground

Is the voltage greater than 11 volts?
Yes GO to A5
No CHECK BCM fuse 19 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Electrical Circuit Diagrams manual to determine the possible causes of the short circuit.
A5 CHECK THE HEADLAMP SWITCH GROUND CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C205-8 C205-1

Is the voltage greater than 11 volts?
Yes GO to A6
No REPAIR the circuit.
A6 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT TO THE HEADLAMP SWITCH FOR AN OPEN
  • Ignition OFF.
  • Disconnect: BCM C2280B.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C205-6 C2280B-49

Is the resistance less than 3 ohms?
Yes GO to A7
No REPAIR the circuit.
A7 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280B-49 Ground

Is there voltage present?
Yes REMOVE the fuse jumper wire. REPAIR the circuit.
No REMOVE the fusible link. GO to A8.
A8 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280B-49 Ground

Is the resistance greater than 10000 Ohms?
Yes INSTALL a new headlamp switch.
REFER TO: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).
CHECK the system for normal operation. If the low beam remains on, GO to A9.
No REPAIR the circuit.
A9 CHECK THE LOW BEAM CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: BCM C2280G.
  • Disconnect: left headlamp C1284 or right headlamp C1285.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-1 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to A17
A10 DETERMINE IF ONE OR BOTH LOW BEAMS ARE INOPERATIVE
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS ON position.

Are both low beams inoperative?
Yes GO to A17
No GO to A11
A11 CHECK THE HEADLAMP VOLTAGE
  • Ignition OFF.
  • Turn the headlamp switch to the OFF position.
  • Disconnect: Left Headlamp C1284 or Right Headlamp C1285 (not working).
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS ON position.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-1 Ground

Is the voltage greater than 11 volts?
Yes GO to A13
No GO to A12
A12 REPEAT THE ON-DEMAND SELF-TEST AND CHECK THE HEADLAMP VOLTAGE
  • Turn the headlamp switch to the OFF position.
  • Using a scan tool, perform the BCM self-test.
  • Clear the diagnostic trouble codes (DTCs) and repeat the self-test (required to enable the lamp output driver).
  • Ignition OFF.
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS ON position.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-1 Ground

Is the voltage greater than 11 volts?
Yes GO to A16
No GO to A14
A13 CHECK THE HEADLAMP GROUND CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-1 C1284-8

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-1 C1285-8

Is the voltage greater than 11 volts?
Yes GO to A16
No REPAIR the faulty circuit.
A14 CHECK THE LOW BEAM POWER SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Turn the headlamp switch to the OFF position.
  • Disconnect: BCM C2280G.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-1 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to A15
No REPAIR the circuit. After the repair:
If no diagnostic trouble codes (DTCs) are present, CHECK the system for normal operation.
If DTC U1000:00 is present, CLEAR the diagnostic trouble codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
A15 CHECK THE LOW BEAM POWER SUPPLY CIRCUIT FOR OPEN
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-1 C2280G-4

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-1 C2280G-2

Is the resistance less than 3 ohms?
Yes GO to A17
No REPAIR the circuit.
A16 CHECK THE LED (LEDS) CONTROL MODULE
  • Turn the headlamp switch to the OFF position.
  • Ignition OFF.
  • Replace the known good LED control module from the opposite headlamp.
  • Connect: the non-working left headlamp C1284 or right headlamp C1285.
  • The ignition is on.
  • CLEAR the diagnostic trouble codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Operate the system and determine if the concern is still present.

Does the condition persist or are any diagnostic trouble codes (DTCs) returned?
Yes REMOVE the known good LED control module. INSTALL a new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER TO: Light-Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
A17 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect the BCM and all related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM and all related inline connectors. Make sure they are installed and fully seated.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST B: ONE OR BOTH HIGH BEAMS INOPERATIVE OR ALWAYS ON – LOW SERIES HEADLAMPS

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
BCM B14E5:01 Left Front Advanced Exterior Lighting System: General Electrical Failure Continuous memory and on-demand DTC that sets when the BCM detects an internal fault in the left headlamp.
BCM B14E5:08 Left Front Enhanced Exterior Lighting: Bus Signal/Message Failures Continuous memory and on-demand DTC that sets when the BCM detects a message failure from the left headlamp LED control module.
BCM B14E5:1C Left Front Advanced Exterior Lighting System: Circuit Voltage Out of Range On-demand DTC that sets when the BCM detects an internal fault in the left headlamp LED control module.
BCM B14E5:49 Left Front Advanced Exterior Lighting System: Internal Electronic Failure Continuous memory and on-demand DTC that sets when the BCM detects an internal fault in the left headlamp LED control module.
BCM B14E5:55 Left Front Advanced Exterior Lighting System: Not Configured Continuous and on-demand DTC that sets when the BCM detects that the left headlamp LED control module is not configured.
BCM B14E5:61 Left Front Advanced Exterior Lighting System: Signal Calculation Failure On-demand DTC that sets when the BCM detects an internal fault in the left headlamp LED control module.
BCM B14E7:01 Right Front Advanced Exterior Lighting System: General Electrical Failure Continuous and on-demand DTC that sets when the BCM detects an internal failure in the right headlamp LED control module.
BCM B14E7:08 Right Front Enhanced Exterior Lighting: Bus Signal/Message Failures Continuous and on-demand DTC that sets when the BCM detects a message failure from the right headlamp LED control module.
BCM B14E7:1C Right Front Advanced Exterior Lighting System: Circuit Voltage Out of Range Continuous and on-demand DTC that sets when the BCM detects an internal failure in the right headlamp LED control module.
BCM B14E7:49 Right Front Advanced Exterior Lighting System: Internal Electronic Failure Continuous and on-demand DTC that sets when the BCM detects an internal failure in the right headlamp LED control module.
BCM B14E7:55 Right Front Advanced Exterior Lighting System: Not Configured Continuous and on-demand DTC that sets when the BCM detects that the right headlamp LED control module is not configured.
BCM B14E7:61 Right Front Advanced Exterior Lighting System: Signal Calculation Failure Continuous and on-demand DTC that sets when the BCM detects an internal failure in the right headlamp LED control module.

Possible Sources

  • Wiring, Terminals or Connectors
  • Multifunction Switch on the LH Steering Column
  • LED Control Module
  • Headlamp Assembly
  • SCCM
  • BCM

Visual Inspection and Pre-checks

  • Inspect the headlamp assembly for damage.
B1 CHECK THE LOW BEAM OPERATION
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS position.
  • Turn the left multifunction switch on the steering column to the high beam position and observe the headlamps.
  • Set the left multifunction switch on the steering column to the LOW BEAM position and observe the headlamps.

Do the low beams operate?
Yes If one high beam lamp does not operate, GO to B2.
If one high beam lamp is always on, GO to B7.
If both high beam lamps do not operate or are always on, GO to B3.
No GO to Pinpoint Test A
B2 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Set the left multifunction switch on the steering column to the LOW BEAM position and the headlamp switch to the OFF position.
  • Ignition OFF.
  • Disconnect: Left Headlamp C1284 or Right Headlamp C1285 (not working).
  • Disconnect: BCM C2280F.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C1284-12 C2280F-15

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C1285-12 ref. C2280F-15

Is the resistance less than 3 ohms?
Yes GO to B7
No REPAIR the circuit.
B3 CHECK THE LEFT (LEFT-HAND) MULTIFUNCTION SWITCH INPUT
  • With the left multifunction switch on the steering column in the high beam and low beam positions, monitor the following parameter identifications (PIDs):

    • Access the SCCM and monitor the HIGH_BEAM_SW PID.

    • Access the SCCM and monitor the LOW_BEAM_SW PID.


Do the PID values match the left multifunction switch position on the steering column?
Yes GO to B4
No INSTALL a new left multifunction switch on the steering column.
REFER TO: Left-Hand Steering Column Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
CHECK the system for normal operation. If the concern persists, GO to B9.
B4 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR A SHORT TO VOLTAGE
  • Turn the headlamp switch to the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280F.
  • Disconnect: Left Headlamp C1284 and Right Headlamp C1285.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280F-15 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to B5
B5 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280F-15 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to B6
No REPAIR the circuit.
B6 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR AN OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280F-15 C1284-12

Is the resistance less than 3 ohms?
Yes GO to B10
No REPAIR the circuit.
B7 CHECK THE HEADLAMPS
  • Set the left multifunction switch on the steering column to the LOW BEAM position and the headlamp switch to the OFF position.
  • Ignition OFF.
  • Replace the known-good headlamp assembly from the opposite side of the vehicle.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the new Local Interconnect Network (LIN) BCM module initialization procedure.
  • CLEAR the diagnostic trouble codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Set the headlamp switch to the HEADLAMPS position and the left multifunction switch on the steering column to the HIGH BEAM position.
  • Monitor the system and determine if the concern persists.

Does the concern persist or do the diagnostic trouble codes (DTCs) return?
Yes GO to B10
No GO to B8
B8 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Set the left multifunction switch on the steering column to the LOW BEAM position and the headlamp switch to the OFF position.
  • Ignition OFF.
  • Install the original headlamp assembly on the non-operating side of the vehicle.
  • NOTE: Before using a known-good LED control module, make sure the part label exactly matches the suspect LED control module. If any differences are noted, do not use the module from the opposite side of the vehicle. INSTALL a new LED control module on the suspect headlamp. Replace the known-good LED control module from the opposite headlamp.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the new Local Interconnect Network (LIN) BCM module initialization procedure.
  • CLEAR the diagnostic trouble codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Set the headlamp switch to the HEADLAMPS position and the left multifunction switch on the steering column to the HIGH BEAM position.
  • Monitor the system and determine if the concern persists.

Does the concern persist or do the diagnostic trouble codes (DTCs) return?
Yes REMOVE the known good LED control module. INSTALL a new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER TO: Light-Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
B9 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect the SCCM and all related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the SCCM and all related inline connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If no TSBs apply to this concern, INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). The system is now operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin concerns.
B10 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect the BCM and all related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM and all related inline connectors. Make sure they are installed and fully seated.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST C: ONE OR BOTH HIGH BEAMS INOPERATIVE OR ALWAYS ON – HIGH SERIES HEADLAMPS

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM B1087:83 LIN bus "A": Incorrect signal protection value calculation Continuous memory and on-demand DTC that is set when the HCM detects a fault in the left headlamp LIN circuit.
HCM B1087:86 LIN Bus "A": Invalid Signal Continuous memory and on-demand DTC that is set when the HCM detects a fault in the left headlamp LIN circuit.
HCM B1088:83 LIN bus "B": Incorrect signal protection value calculation Continuous memory and on-demand DTC that is set when the HCM detects a fault in the right headlamp LIN circuit.
HCM B1088:86 LIN Bus "B": Incorrect Signal Continuous memory and on-demand DTC that is set when the HCM detects a fault in the right headlamp LIN circuit.
HCM B14D9:01 Left Headlamp Beam Distribution Actuator: General Electrical Failure Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating a headlamp beam distribution actuator fault.
HCM B14D9:64 Left Headlamp Beam Distribution Actuator: Signal Invalid Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating that the headlamp beam distribution actuator signal is outside its operating range.
HCM B14D9:87 Left Headlamp Beam Distribution Actuator: No Sub Type Message Continuous and on-demand DTC that sets when the HCM does not receive a headlamp beam distribution actuator message from the left headlamp LIN circuit LED control module.
HCM B14DA:01 Right Headlamp Beam Distribution Actuator: General Electrical Failure Continuous and on-demand DTC that sets when the HCM receives a message from the right headlamp LIN circuit LED control module indicating a headlamp beam distribution actuator fault.
HCM B14DA: 64 Right Headlamp Beam Distribution Actuator: Signal Invalid Continuous and on-demand DTC that sets when the HCM receives a message from the right headlamp LIN circuit LED control module indicating that the headlamp beam distribution actuator signal is outside its operating range.
HCM B14DA: 87 Right Headlamp Beam Distribution Actuator: No Sub Type Message Continuous and on-demand DTC that sets when the HCM does not receive a headlamp beam distribution actuator message from the right headlamp LIN circuit LED control module.
HCM B14DB: 01 Left Headlamp Driver Control System: General Electrical Failure Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating a headlamp driver control system fault.
HCM B14DB: 54 Left Headlamp Driver Control System: Calibration Missing Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating that the headlamp driver control system has failed calibration.
HCM B14DB: 55 Left Headlamp Driver Control System: Not Configured Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating that the headlamp driver control system is not configured.
HCM B14DB: 87 Left Headlamp Driver Control System: Missing Message Permanent and on-demand DTC that sets when the HCM does not receive the headlamp driver control system message from the LED control module on the left headlamp LIN circuit.
HCM B14DC:01 Right Headlamp Driver Control System: General Electrical Failure Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a headlamp driver control system malfunction.
HCM B14DC: 54 Right Headlamp Driver Control System: Calibration Missing Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating that the headlamp driver control system has failed calibration.
HCM B14DC: 55 Right Headlamp Driver Control System: Not Configured Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating that the headlamp driver control system is not configured.
HCM B14DC: 87 Right Headlamp Driver Control System: Missing Message Permanent and on-demand DTC that sets when the HCM does not receive the headlamp driver control system message from the LED control module on the right headlamp LIN circuit.
HCM B15A6:01 Right Matrix Controller Actuator: General Electrical Failure Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a matrix controller driver malfunction.
HCM B15A6:87 Right Matrix Controller Actuator: No Sub Type Message Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a matrix controller driver malfunction.
HCM B15A7:01 Left Matrix Controller Actuator: General Electrical Failure Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the left headlamp LIN circuit indicating a matrix controller driver malfunction.
HCM B15A7:87 Left Matrix Controller Actuator: No Sub Type Message Permanent and on-demand DTC that sets when the HCM does not receive the headlamp driver control system message from the LED control module on the left headlamp LIN circuit.

Possible Sources

  • Wiring, Terminals or Connectors
  • Multifunction Switch on the LH Steering Column
  • LED Control Module
  • Headlamp Assembly
  • SCCM
  • HS-CAN

Visual Inspection and Pre-checks

  • Inspect the headlamp assembly for damage.
C1 CHECK LOW BEAM OPERATION
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS position.
  • Turn the left multifunction switch on the steering column to the high beam position and observe the headlamps.
  • Set the left multifunction switch on the steering column to the LOW BEAM position and observe the headlamps.

Do the low beams operate?
Yes If one high beam is inoperative or remains on, GO to C3.
If both high beams are inoperative or remain on, GO to C2.
No GO to Pinpoint Test A
C2 CHECK LEFT (DRIVER SIDE) MULTIFUNCTION SWITCH INPUT
  • With the left multifunction switch on the steering column in the high beam and low beam positions, monitor the following parameter identifications (PIDs):

    • Access the SCCM and monitor the HIGH_BEAM_SW PID.

    • Access the SCCM and monitor the LOW_BEAM_SW PID.


Do the PID values match the left multifunction switch position on the steering column?
Yes GO to C3
No INSTALL a new left multifunction switch on the steering column.
REFER TO: Left Steering Column Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
CHECK the system for normal operation. If the concern persists, GO to C8.
C3 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR SHORT TO VOLTAGE
  • Turn the headlamp switch to the OFF position.
  • Ignition OFF.
  • Disconnect: HCM C2129.
  • Disconnect: left headlamp C1284 or right headlamp C1285.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO TO C4
C4 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to C5
No REPAIR the circuit.
C5 CHECK THE BCM (BODY CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR OPEN
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 C1284-12

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 C1285-12

Is the resistance less than 3 ohms?
Yes GO to C6
No REPAIR the circuit.
C6 CHECK THE HEADLAMPS
  • Set the left multifunction switch on the steering column to the LOW BEAM position and the headlamp switch to the OFF position.
  • Ignition OFF.
  • Replace the known-good headlamp assembly from the opposite side of the vehicle.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the new Local Interconnect Network (LIN) BCM module initialization procedure.
  • CLEAR the diagnostic trouble codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Set the headlamp switch to the HEADLAMPS position and the left multifunction switch on the steering column to the HIGH BEAM position.
  • Monitor the system and determine if the concern persists.

Does the concern persist or do the diagnostic trouble codes (DTCs) return?
Yes GO TO C9
No GO TO C7
C7 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Set the left multifunction switch on the steering column to the LOW BEAM position and the headlamp switch to the OFF position.
  • Ignition OFF.
  • Install the original headlamp assembly on the non-operating side of the vehicle.
  • NOTE: Before using a known-good LED control module, make sure the part label exactly matches the suspect LED control module. If any differences are noted, do not use the module from the opposite side of the vehicle. INSTALL a new LED control module on the suspect headlamp. Replace the known-good LED control module from the opposite headlamp.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the new Local Interconnect Network (LIN) BCM module initialization procedure.
  • CLEAR the diagnostic trouble codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Set the headlamp switch to the HEADLAMPS position and the left multifunction switch on the steering column to the HIGH BEAM position.
  • Monitor the system and determine if the concern persists.

Does the concern persist or do the diagnostic trouble codes (DTCs) return?
Yes REMOVE the known good LED control module. INSTALL a new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER TO: Light-Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
C8 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect the SCCM and all related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the SCCM and all related inline connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If no TSBs apply to this concern, INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
C9 CHECK THE HCM (HEADLAMP CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect the HCM and all related in-line connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the HCM and all related in-line connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST D: FLASH-TO-PASS FUNCTION INOPERATIVE

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

  • Multifunction Switch on the LH Steering Column
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the LH multifunction switch on the steering column for damage.
D1 CHECK THE HIGH BEAM OPERATION
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS ON position.
  • Turn the high beam on and off using the high beam function of the LH multifunction switch on the steering column.

Does the high beam operate correctly?
Yes GO to D2
No For low series headlamps, GO to Pinpoint Test B.
For high series headlamps, GO to Pinpoint Test C.
D2 CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH INPUT
  • Move the LH multifunction switch on the steering column to the FLASH-to-PASS and LOW BEAM positions,

    Access the SCCM and monitor the FLASH-TO-PASS (0) PID.


Do the PID values match the left multifunction switch position on the steering column?
Yes GO to D4
No INSTALL a new left multifunction switch on the steering column.
REFER TO: Left Steering Column Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
CHECK the system for normal operation. If the concern persists, GO to D3.
D3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect all SCCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the SCCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
D4 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC TEST E: AUTOMATIC HIGH BEAM FUNCTION INOPERATIVE

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

The IPMA controls the automatic high beam function when it is active.

The IPMA turns on the high beams when the following conditions are met:

  • The function has been enabled using the message center.
  • The headlamp switch is in the AUTO LAMPS position and the auto lamp function has turned on the exterior lamps.
  • The vehicle speed is above 51 km/h.
  • The IPMA determines that the ambient light conditions are dark enough.
  • The IPMA does not detect any light sources that can be interpreted as vehicle headlamps.

The IPMA turns off the high beams when any of the following occurs:

  • The IPMA detects any light source that can be interpreted as an illuminated vehicle headlamp.
  • The IPMA determines that the ambient light conditions are not dark enough.
  • The vehicle speed falls below 44 km/h.
  • The auto lamps are turned off.
  • The IPMA determines that the view is blocked.

Possible Sources

  • Debris on the windshield.
  • IPMA
NOTE: In cold weather conditions (4 °C [40°F] or lower), the automatic high beam is disabled for 10 minutes to allow the windshield heater to clear the windshield in front of the high beam camera.
E1 CHECK THE HIGH BEAM HEADLAMP OPERATION
  • Set the headlamp switch to the HEADLAMPS ON position.
  • Move the RH multifunction switch on the steering column to the HIGH BEAM position while observing the headlamps.

Do the high beam headlamps illuminate?
Yes GO to E2
No For low series headlamps, GO to Pinpoint Test B.
For high series headlamps, GO to Pinpoint Test C.
E2 CHECK THE IPMA (IMAGE PROCESSING MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • The ignition is on.
  • Using the diagnostic scan tool, perform the IPMA self-test.

Are any IPMA Diagnostic Trouble Codes (DTCs) present?
Yes
Refer to: Lane Keeping System (419-07 Lane Keeping System, Diagnosis and Testing).
No GO to E3
E3 MAKE SURE THE AUTOMATIC HIGH BEAM SENSOR IS NOT BLOCKED
  • Visually check that the automatic high beam sensor is not blocked. Sources of blockage may include:
    • stickers, window decals or tags.
    • non-factory window tint.

Is the automatic high beam sensor blocked?
Yes If possible, REMOVE the blockage. If the blockage cannot be removed, CHECK the automatic high beam operation using the customer vehicle.
No INSTALL a new IPMA.
REFER TO: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).
PINPOINT TEST F: B1007:09

For circuit and connector information, refer to Wiring Diagrams Cell 92.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
SCCM B124C:96 Multifunction switch turn signal assembly: internal component fault Continuous memory and on-demand DTC that sets when the SCCM detects an internal malfunction of the left steering column multifunction switch.
SCCM B124C:9E Turn signal switch pack: stuck in on position Permanent memory and on-demand DTC that sets when the SCCM detects that the left steering column multifunction switch has been in the switch position for at least 2 minutes.

Possible Sources

  • Wiring, Terminals or Connectors
  • Multifunction Switch on the LH Steering Column
  • SCCM
F1 CHECK THE LH (LEFT-HAND) MULTIFUNCTION SWITCH ON THE STEERING COLUMN
  • INSTALL a new left multifunction switch on the steering column.
    REFER TO: Left Steering Column Multifunction Switch (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
  • The ignition is on.
  • Using the diagnostic scan tool, perform the SCCM self-test.
  • Clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test.
  • Ignition OFF.
  • The ignition is on.
  • Using the diagnostic scan tool, perform the SCCM self-test.

Is SCCM DTC B1007:09 present or does the condition return?
Yes The system is operating correctly. The concern was caused by the LH multifunction switch on the steering column.
No GO to F2
F2 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect all SCCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the SCCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST G: AUTOMATIC HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING INOPERATIVE OR MALFUNCTIONING

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM B1437:87 Left Levelling Actuator: Missing Message Permanent and on-demand DTC that sets when the HCM does not receive the left headlamp ride height adjustment drive message from the LED control module on the left headlamp LIN circuit.
HCM B1439:87 Right Levelling Actuator: Missing Message Permanent and on-demand DTC that sets when the HCM does not receive the left headlamp ride height alignment drive message from the LED control module on the right headlamp LIN circuit.
BCM B14E5:01 Left Front Advanced Exterior Lighting System: General Electrical Failure Continuous memory and on-demand DTC that sets when the BCM detects an internal fault in the left headlamp.
BCM B14E5:08 Left Front Enhanced Exterior Lighting: Bus Signal/Message Failures Permanent and on-demand DTC that sets when the BCM detects a message failure from the left low beam output circuit.
BCM B14E5:1C Left Front Advanced Exterior Lighting System: Circuit Voltage Out of Range On-demand DTC that sets when the BCM detects an internal fault in the left headlamp.
BCM B14E5:49 Left Front Advanced Exterior Lighting System: Internal Electronic Failure Continuous memory and on-demand DTC that sets when the BCM detects an internal fault in the left headlamp.
BCM B14E5:55 Left Front Advanced Exterior Lighting System: Not Configured Permanent and on-demand DTC that sets when the BCM detects that the left headlamp adaptive front lighting module is not configured.
BCM B14E5:61 Left Front Advanced Exterior Lighting System: Signal Calculation Failure On-demand DTC that sets when the BCM detects an internal fault in the left headlamp.
BCM B14E7:01 Right Front Advanced Exterior Lighting System: General Electrical Failure Continuous memory and on-demand DTC that sets when the BCM detects an internal fault in the right headlamp.
BCM B14E7:08 Right Front Enhanced Exterior Lighting: Bus Signal/Message Failures Continuous memory and on-demand DTC that sets when the BCM detects a message failure from the right low beam output circuit.
BCM B14E7:1C Right Front Advanced Exterior Lighting System: Circuit Voltage Out of Range On-demand DTC that sets when the BCM detects an internal fault in the right headlamp.
BCM B14E7:49 Right Front Advanced Exterior Lighting System: Internal Electronic Failure Continuous memory and on-demand DTC that sets when the BCM detects an internal fault in the right headlamp.
BCM B14E7:55 Right Front Advanced Exterior Lighting System: Not Configured Permanent and on-demand DTC that sets when the BCM detects that the right headlamp adaptive front lighting module is not configured.
BCM B14E7:61 Right Front Advanced Exterior Lighting System: Signal Calculation Failure On-demand DTC that sets when the BCM detects an internal fault in the right headlamp.
HCM B15A6:87 Right Matrix Controller Actuator: No Sub Type Message Continuous memory and on-demand DTC that sets when the HCM does not receive the matrix headlamp controller drive message from the LED control module on the left headlamp LIN circuit.
HCM B15A7:87 Left Matrix Controller Actuator: No Sub Type Message Continuous memory and on-demand DTC that sets when the HCM does not receive the matrix headlamp controller drive message from the LED control module on the right headlamp LIN circuit.
HCM B1D64:87 Left Headlamp Swivel Motor: No Sub Type Message Continuous memory and on-demand DTC that sets when the HCM does not receive the headlamp swivel motor message from the LED control module on the right headlamp LIN circuit.
HCM B1D65:87 Right Headlamp Swivel Motor: No Sub Type Message Continuous memory and on-demand DTC that sets when the HCM does not receive the headlamp swivel motor message from the LED control module on the right headlamp LIN circuit.

Possible Sources

  • Fuse
  • Wiring, Terminals or Connectors
  • Headlamp Assembly
  • LED Control Module
  • HS-CAN

Visual Inspection and Pre-checks

  • Inspect fuse BCMC 21 (10A).
  • Inspect the headlamp for damage.
G1 CHECK HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING OPERATION
  • The ignition is on.
  • Set the headlamp switch to the HEADLAMPS ON position.
  • Drive the vehicle while watching both headlamps.

Does each headlamp automatically level?
Yes GO to G3
No VERIFY that fuse BCMC 21 (10A) is good. If OK, go to G2. If not OK, REFER to the electrical circuit diagram to determine the possible cause of the short circuit.
G2 CHECK THE HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Left Headlamp C1284.
  • The ignition is on.
  • Action:
    Click to display the connectors

    Left Motor


    Positive lead Measurement/Action Negative lead
    C1284-11 Ground

Is the voltage greater than 11 volts?
Yes GO to G9
No REPAIR the circuit.
G3 CHECK THE NON-OPERATING HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect: Left Headlamp C1284 or Right Headlamp C1285 (not working).
  • The ignition is on.
  • Action:
    Click to display the connectors

    Left Motor


    Positive lead Measurement/Action Negative lead
    C1284-11 Ground

    Click to display the connectors

    Right Motor


    Positive lead Measurement/Action Negative lead
    C1285-11 Ground

Is the voltage greater than 11 volts?
Yes GO to G4
No REPAIR the circuit.
G4 CHECK THE HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: HCM C2129.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 Ground

Is there voltage present?
Yes REPAIR the faulty circuit.
No GO to G5
G5 CHECK THE HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 Ground

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to G6
No REPAIR the faulty circuit.
G6 CHECK THE HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO SHIELD CIRCUIT
  • Ignition OFF.
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 C2129-7

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 C2129-16

Is the resistance greater than 10000 Ohms?
Yes GO to G7
No REPAIR the faulty circuit.
G7 CHECK THE HEADLAMP LEVELING OR ADAPTIVE FRONT LIGHTING LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors

    LH headlamp


    Positive lead Measurement/Action Negative lead
    C2129-1 C1284-12

    Click to display the connectors

    Right headlamp


    Positive lead Measurement/Action Negative lead
    C2129-6 C1285-12

Is the resistance less than 3 ohms?
Yes GO to G8
No REPAIR the faulty circuit.
G8 CHECK THE LED CONTROL MODULE
  • Turn the headlamp switch to the OFF position.
  • Ignition OFF.
  • Replace the known good LED control module from the opposite headlamp.
  • Connect: the non-working left headlamp C1284 or right headlamp C1285.
  • The ignition is on.
  • CLEAR the DTCs, REPEAT the HCM self-test and cycle the ignition off and on. REPEAT the self-test.
  • Operate the system and determine if the concern is still present.

Does the condition persist or are any diagnostic trouble codes (DTCs) returned?
Yes GO to G9
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER TO: Light-Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
G9 CHECK THE HCM (HEADLAMP CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect the HCM and the related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the HCM and the related inline connectors. Make sure that it is correctly installed and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes If the headlamp leveling or adaptive front lighting does not operate on both headlamps, CHECK OASIS for applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins apply, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation). If the headlamp leveling or adaptive front lighting does not operate on only one headlamp, CHECK OASIS for applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins apply, INSTALL a new HCM. CHECK the system for proper operation. If the headlamp leveling or adaptive front lighting still does not operate, INSTALL a new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST H: FRONT OR REAR HEIGHT SENSOR INOPERATIVE

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM B1041:04 Headlamp leveling control: internal system failures Continuous memory and on-demand DTC that sets when the HCM detects an invalid input signal from the left rear height sensor.
HCM B1041:54 Levelling Control: Calibration Missing Continuous memory and on-demand DTC that sets when the HCM detects an invalid input signal from the left rear height sensor.
HCM B1A59:1C 5 V Sensor Supply: Circuit Voltage Out of Range Continuous memory and on-demand DTC that sets when the HCM detects that the 5-volt reference voltage for the height sensors is below 4.75 volts or above 5.25 volts.
HCM C1A03:12 Left Front Height Sensor: Short to Battery Continuous memory and on-demand DTC that sets when the HCM detects an invalid input from the left front height sensor.
HCM C1A03:14 Left Front Height Sensor: Short to Ground or Open Circuit Continuous memory and on-demand DTC that sets when the HCM detects an invalid input from the left front height sensor.
HCM C1A03:29 Left Front Height Sensor: Incorrect Signal Continuous memory and on-demand DTC that sets when the HCM detects an invalid input from the left front height sensor.
HCM C1A03:64 Left Front Height Sensor: Signal Not Plausible Continuous memory and on-demand DTC that sets when the HCM detects an invalid input from the left front height sensor.
HCM C1A05:12 Left Rear Height Sensor: Short to Battery Continuous memory and on-demand DTC that sets when the HCM detects an invalid input signal from the left rear height sensor.
HCM C1A05:14 Left Rear Height Sensor: Short to Ground or Open Circuit Continuous memory and on-demand DTC that sets when the HCM detects an invalid input signal from the left rear height sensor.
HCM C1A05:29 Left Rear Height Sensor: Incorrect Signal Continuous memory and on-demand DTC that sets when the HCM detects an invalid input signal from the left rear height sensor.
HCM C1A05:64 Left Rear Height Sensor: Signal Not Plausible Continuous memory and on-demand DTC that sets when the HCM detects an invalid input signal from the left rear height sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • Headlamp Level Sensor
  • HS-CAN

Visual Inspection and Pre-checks

  • Inspect the headlamp level sensors and linkage for damage.
H1 CHECK THE HEADLAMP LEVELING SENSOR VOLTAGE SUPPLY
  • Ignition OFF.
  • Disconnect: LH Front Height Sensor C1153 and LH Rear Height Sensor C4092.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-3 Ground

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-3 Ground

Is the voltage approximately 5 volts?
Yes GO to H5
No If the voltage is less than 5 volts, GO to H2.
If the voltage is greater than 5 volts, GO to H4.
H2 CHECK THE HEADLAMP LEVELING SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: HCM C2129
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-3 Ground

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-3 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to H3
No REPAIR the circuit.
H3 CHECK THE HEADLAMP LEVELING SENSOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-3 C2129-9

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-3 C2129-8

Is the resistance less than 3 ohms?
Yes GO to H11
No REPAIR the circuit.
H4 CHECK THE HEADLAMP LEVELING SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: HCM C2129.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-3 Ground

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-3 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to H11
H5 CHECK THE HEADLAMP LEVELING SENSOR GROUND CIRCUIT
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-3 C1153-2

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-3 C4092-2

Is the voltage approximately 5 volts?
Yes GO to H8
No GO to H6
H6 CHECK THE HEADLAMP LEVELING SENSOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: HCM C2129.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-2 Ground

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to H7
H7 CHECK THE HEADLAMP LEVELING SENSOR GROUND CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-2 C2129-15

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-2 C2129-14

Is the resistance less than 3 ohms?
Yes GO to H11
No REPAIR the circuit.
H8 CHECK THE HEADLAMP LEVELING SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect: HCM C2129.
  • The ignition is on.
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-1 Ground

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-1 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to H9
H9 CHECK THE HEADLAMP LEVELING SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-1 Ground

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-1 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to H10
No REPAIR the circuit.
H10 CHECK THE HEADLAMP LEVELING SENSOR SIGNAL CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors

    LH Front Height Sensor


    Positive lead Measurement/Action Negative lead
    C1153-1 C2129-12

    Click to display the connectors

    LH Rear Height Sensor


    Positive lead Measurement/Action Negative lead
    C4092-1 C2129-11

Is the resistance less than 3 ohms?
Yes INSTALL a new headlamp leveling position sensor.
REFER TO: Headlamp Leveling Position Sensor (417-01 Exterior Lighting, Removal and Installation).
CLEAR the DTCs. REPEAT the self-test. If the DTC returns, INSTALL a new HCM.
No REPAIR the circuit.
H11 CHECK THE HCM (HEADLAMP CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect the HCM and the related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the HCM and the related inline connectors. Make sure that it is correctly installed and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST I: B1437:01, B1439:01, B14D9:01, B14D9:64, B14DA:01, B14DA:64, B14DB:01, B14DB:54, B14DB:55, B14DK:01, B14DK:54, B14DK:55, B1559:96, B155A:96, B15A6:01, B15A7:01, B1D64:01, B1D65:01, B1D68:64, B1D69:64

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM B1437:01 Left Levelling Actuator: General Electrical Failure Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module on the left headlamp LIN circuit indicating a fault in the headlamp leveling actuator.
HCM B1439:01 Right Levelling Actuator: General Electrical Failure Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a fault in the headlamp leveling actuator.
HCM B14D9:01 Left Headlamp Beam Distribution Actuator: General Electrical Failure Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating a headlamp beam distribution actuator fault.
HCM B14D9:64 Left Headlamp Beam Distribution Actuator: Signal Invalid Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module on the left headlamp LIN circuit indicating that the headlamp beam distribution actuator signal is outside its operating range.
HCM B14DA:01 Right Headlamp Beam Distribution Actuator: General Electrical Failure Continuous and on-demand DTC that sets when the HCM receives a message from the right headlamp LIN circuit LED control module indicating a headlamp beam distribution actuator fault.
HCM B14DA: 64 Right Headlamp Beam Distribution Actuator: Signal Invalid Continuous and on-demand DTC that sets when the HCM receives a message from the right headlamp LIN circuit LED control module indicating that the headlamp beam distribution actuator signal is outside its operating range.
HCM B14DB: 01 Left Headlamp Driver Control System: General Electrical Failure Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating a headlamp driver control system fault.
HCM B14DB: 54 Left Headlamp Driver Control System: Calibration Missing Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating that the headlamp driver control system has failed calibration.
HCM B14DB: 55 Left Headlamp Driver Control System: Not Configured Continuous and on-demand DTC that sets when the HCM receives a message from the left headlamp LIN circuit LED control module indicating that the headlamp driver control system is not configured.
HCM B14DC:01 Right Headlamp Driver Control System: General Electrical Failure Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a headlamp driver control system malfunction.
HCM B14DC: 54 Right Headlamp Driver Control System: Calibration Missing Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating that the headlamp driver control system has failed calibration.
HCM B14DC: 55 Right Headlamp Driver Control System: Not Configured Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating that the headlamp driver control system is not configured.
HCM B1559: 96 Left Headlamp: Internal Component Failure Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module on the left headlamp LIN circuit indicating a fault in a component inside the headlamp unit.
HCM B155A: 96 Right Headlamp: Internal Component Failure Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a fault in a component inside the headlamp unit.
HCM B15A6:01 Right Matrix Controller Actuator: General Electrical Failure Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the right headlamp LIN circuit indicating a matrix controller driver malfunction.
HCM B15A7:01 Left Matrix Controller Actuator: General Electrical Failure Permanent and on-demand DTC that sets when the HCM receives a message from the LED control module on the left headlamp LIN circuit indicating a matrix controller driver malfunction.
HCM B1D64:01 Left Headlamp Swivel Motor: General Electrical Failure Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module on the left headlamp LIN circuit indicating a fault in the headlamp swivel motor.
HCM B1D65:01 Right Headlamp Swivel Motor: General Electrical Failure Continuous memory and on-demand DTC that is set when the HCM receives a message from the right headlamp LED control module on the LIN circuit indicating a headlamp swivel motor fault.
HCM B1D68:64 Left Headlamp Swivel Sensor: Signal Invalid Continuous memory and on-demand DTC that is set when the HCM receives a message from the left headlamp LED control module on the LIN circuit indicating that the headlamp swivel feedback sensor is outside its operating range.
HCM B1D69:64 Right Headlamp Swivel Feedback Sensor: Signal Invalid Continuous memory and on-demand DTC that is set when the HCM receives a message from the right headlamp LED control module on the LIN circuit indicating that the headlamp swivel feedback sensor is outside its operating range.

Possible Sources

  • Headlamp Assembly
  • LED Control Module
  • HS-CAN

Visual Inspection and Pre-checks

  • Inspect the headlamp for damage.
I1 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Ignition OFF.
  • Replace the known good LED control module from the opposite headlamp.
  • The ignition is on.
  • CLEAR the DTCs, REPEAT the HCM self-test and cycle the ignition off and on. REPEAT the self-test.
  • Operate the system and determine if the concern is still present.

Does the condition persist or are any diagnostic trouble codes (DTCs) returned?
Yes INSTALL a new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER TO: Light-Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
PINPOINT TEST J: U0121:00

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U0121:00 Communication Lost with Anti-Lock Brake System (ABS) Control Module "A": no subtype information Continuous memory and on-demand DTC that is stored in continuous memory if the HCM does not receive data messages from the ABS module through the GWM for 5 seconds or longer.

Possible Sources

  • Communication Problem
  • Battery Voltage Concern
  • ABS Module
  • HS-CAN
J1 VERIFY CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to J2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
J2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the ABS module pass the network test?
Yes GO to J3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
J3 PERFORM THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE SELF-TEST
  • Using the diagnostic scan tool, perform a self-test of the ABS module.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Anti-Lock Brake System (ABS) and Stability Control System (206-09 Anti-Lock Brake System (ABS) and Stability Control System, Diagnosis and Testing).
No GO to J4
J4 RECHECK THE HCM (HEADLAMP CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the HCM self-test.

Is DTC U0121:00 still present?
Yes GO to J5
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
J5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0121:00 SET IN OTHER MODULES
  • Using the diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a scan tool, perform a continuous memory self-test.
  • Retrieve continuous memory diagnostic trouble codes (CMDTC) from all modules.

Is DTC U0121:00 set in the BCM?
Yes INSTALL a new ABS module (HCU part).
No INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
PINPOINT TEST K: U0146:00

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U0146:00 Lost Communication with Serial Data Gateway "A": No Sub-Type Information Continuous memory and on-demand DTC that is stored in continuous memory if the HCM does not receive data messages from the GWM for 5 seconds or longer.

Possible Sources

  • Communication Problem
  • Battery Voltage Concern
  • GWM
  • HS-CAN
K1 VERIFY THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to K2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
K2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the GWM pass the network test?
Yes GO to K3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
K3 PERFORM THE GWM (GATEWAY MODULE A) SELF-TEST
  • Using the diagnostic scan tool, perform the GWM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
No GO to K4
K4 RECHECK THE HCM (HEADLAMP CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the HCM self-test.

Is DTC U0146:00 still present?
Yes GO to K5
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
K5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0146:00 SET IN OTHER MODULES
  • Using the diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a scan tool, perform a continuous memory self-test.
  • Retrieve continuous memory diagnostic trouble codes (CMDTC) from all modules.

Is DTC U0146:00 set in the BCM?
Yes INSTALL a new GWM. For the procedure, refer to the appropriate section in group 418.
No INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
PINPOINT TEST L: U0212:00

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information Continuous memory and on-demand DTC that is stored in continuous memory if the HCM does not receive data messages from the SCCM for 5 seconds or longer.

Possible Sources

  • Communication Problem
  • Battery Voltage Concern
  • SCCM
  • HS-CAN
L1 VERIFY THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to L2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
L2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the SCCM pass the network test?
Yes GO to L3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
L3 PERFORM THE SCCM (STEERING COLUMN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform the SCCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
Refer to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).
No GO to L4
L4 RECHECK HCM (HEADLAMP CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the HCM self-test.

Is DTC U0212:00 still present?
Yes GO to L5
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
L5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0212:00 SET IN OTHER MODULES
  • Using the diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a scan tool, perform a continuous memory self-test.
  • Retrieve continuous memory diagnostic trouble codes (CMDTC) from all modules.

Is DTC U0212:00 set in another module?
Yes INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
PINPOINT TEST M: U0151:00

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U0151:00 Lost Communication with Restraints Control Module: No Sub Type Information Continuous memory and on-demand DTC that is stored in continuous memory in the HCM if data messages from the RCM are not received for 5 seconds or longer.

Possible Sources

  • Communication Problem
  • Battery Voltage Concern
  • RCM
  • HS-CAN
M1 CHECK CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to M2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
M2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the RCM pass the network test?
Yes GO to M3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
M3 PERFORM THE RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
  • Using a scan tool, perform the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER TO: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).
No GO to M4
M4 RECHECK HCM (HEADLAMP CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the HCM self-test.

Is DTC U0151:00 still present?
Yes GO to M5
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
M5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0151:00 SET IN OTHER MODULES
  • Using the diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a scan tool, perform a continuous memory self-test.
  • Retrieve continuous memory diagnostic trouble codes (CMDTC) from all modules.

Is DTC U0151:00 set in other modules?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new RCM.
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
No INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
PINPOINT TEST N: U023A:00

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U023A:00 Lost Communication with Image Processing Module A: No Sub Type Information Continuous memory and on-demand DTC that is stored in continuous memory in the HCM if data messages from the IPMA are not received for 5 seconds or longer.

Possible Sources

  • Communication Problem
  • Battery Voltage Concern
  • IPMA
  • HS-CAN
N1 CONFIRM THE CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to N2
No The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
N2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the IPMA pass the network test?
Yes GO to N3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
N3 PERFORM IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Using the diagnostic scan tool, perform the IPMA self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes
Refer to: Lane Keeping System (419-07 Lane Keeping System, Diagnosis and Testing).
No GO to N4
N4 RECHECK HCM (HEADLAMP CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Repeat the HCM self-test.

Is DTC U023A:00 still present?
Yes GO to N5
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
N5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U023A:00 SET IN OTHER MODULES
  • Using the diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
  • Ignition OFF.
  • The ignition is on.
  • Wait 10 seconds.
  • Using a scan tool, perform a continuous memory self-test.
  • Retrieve continuous memory diagnostic trouble codes (CMDTC) from all modules.

Is DTC U023A:00 set in other modules?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new IPMA.
REFER TO: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).
No INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
PINPOINT TEST O: U2024:51, U2024:57, U2100:00, U2101:00, U2101:56, U2101:86, U2200:45, U3000:45, U3000:46

For circuit and connector information, refer to Wiring Diagrams Cell 92.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U2024:51 Control Module Calibration Data: Not Programmed Continuous memory DTC that is set due to missing HCM configuration.
HCM U2024:57 Control module calibration data: incorrect/incompatible software component Continuous memory DTC that is set due to incomplete or incorrect HCM configuration.
HCM U2100:00 Initial Configuration Not Complete: No Sub Type Information Continuous memory DTC that is set due to incomplete or incorrect HCM configuration.
HCM U2101:00 Control Module Configuration Incompatible: No Sub Type Information Continuous memory DTC that is set due to incomplete or incorrect HCM configuration.
HCM U2101:56 Control module configuration incompatible: incorrect/incompatible configuration Continuous memory DTC that is set due to incomplete or incorrect HCM configuration.
HCM U2101:86 Control module configuration incompatible: incorrect signal Continuous memory DTC that is set due to incomplete or incorrect HCM configuration.
HCM U2200:45 Control module configuration memory corrupted: software memory failure Continuous memory and on-demand DTC that is set due to incomplete or incorrect HCM configuration.
HCM U3000:45 Control module: software memory failure Continuous memory and on-demand DTC that is set due to incomplete or incorrect HCM configuration.
HCM U3000:46 Control module: calibration/parameter memory failure Continuous memory and on-demand DTC that is set due to incomplete or incorrect HCM configuration.

Possible Sources

  • HS-CAN
O1 CHECK THE VEHICLE HISTORY
  • Check the vehicle history for any recent service actions performed on the HCM.

Has any recent service been performed on the HCM?
Yes PERFORM the PMI procedure as directed by the diagnostic scan tool.
REFER TO: Module Programming (418-01 Module Configuration, General Procedures).
No GO to O2
O2 CHECK THE HCM (HEADLAMP CONTROL MODULE) OPERATION
  • Disconnect and inspect the HCM and the related inline connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the HCM and the related inline connectors. Make sure that it is correctly installed and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST P: U0415:00, U0429:00, U0447:00, U0452:00, U053B:00

For circuit and connector information, refer to Wiring Diagrams Cell 92.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U0415:00 Incorrect Data Received from Anti-Lock Brake System (ABS) Control Module "A": No Sub-Type Information Continuous memory and on-demand DTC that is set when the HCM receives invalid network data from the ABS module.
HCM U0429:00 Incorrect Data Received from Steering Column Control Module: No Sub-Type Information Continuous memory and on-demand DTC that is set when the HCM receives invalid network data from the SCCM.
HCM U0447:00 Invalid data received from serial data gateway "A": no subtype information Continuous memory and on-demand DTC that is set when the HCM receives invalid network data from the GWM.
HCM U0452:00 Incorrect Data Received from Restraints Control Module: No Sub Type Information Continuous memory and on-demand DTC that is set when the HCM receives invalid network data from the RCM.
HCM U053B:00 Invalid Data Received from Image Processing Module A: No Sub Type Information Continuous memory and on-demand DTC that is set when the HCM receives invalid network data from the IPMA.

Possible Sources

  • HS-CAN
P1 REPEAT ON-DEMAND SELF-TEST AND CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS)
  • For DTC U0415:00, repeat the ABS module self-test using the diagnostic scan tool.
  • For DTC U0429:00, repeat the SCCM self-test using the diagnostic scan tool.
  • For DTC U0447:00, repeat the GWM self-test using the diagnostic scan tool.
  • For DTC U0452:00, repeat the RCM self-test using the diagnostic scan tool.
  • For DTC U053B:00: Using the diagnostic scan tool, repeat the IPMA self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes For DTC U0415:00, RESOLVE the ABS diagnostic trouble codes (DTCs).
REFER TO: Anti-Lock Brake System (ABS) and Traction Control System (206-09 Anti-Lock Brake System (ABS) and Traction Control System, Diagnosis and Testing). For DTC U0429:00, RESOLVE the SCCM diagnostic trouble codes (DTCs).
REFER TO: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing). For DTC U0447:00, RESOLVE the GWM diagnostic trouble codes (DTCs).
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing). For DTC U0452:00, RESOLVE the RCM diagnostic trouble codes (DTCs).
REFER TO: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). For DTC U053B:00, RESOLVE the IPMA diagnostic trouble codes (DTCs).
REFER TO: Lane Keeping System (419-07 Lane Keeping System, Diagnosis and Testing).
No Diagnose all communication network diagnostic trouble codes (DTC).
REFER to: Communication Network (418-00 Communication Network, Diagnosis and Testing).
PINPOINT TEST Q: U3003:16

For circuit and connector information, refer to Wiring Diagrams Cell 92.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U3003:16 Battery Voltage: Circuit Voltage Below Threshold Continuous memory and on-demand DTCs that are set in the HCM when the HCM detects low battery voltage at the power supply input.

Possible Sources

  • Wiring, Terminals or Connectors
  • Battery
  • Charging System Concern
  • HS-CAN
Q1 PERFORM THE HCM (HEADLAMP CONTROL MODULE) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Using the diagnostic scan tool, perform the HCM self-test.

IS DTC U3003:16 STILL PRESENT?
Yes GO to Q2
No The system is currently operating correctly. The DTC may have been set due to a previous low battery voltage condition.
Q2 CHECK THE CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, retrieve all Continuous Monitor Diagnostic Trouble Codes (CMDTCs).

Are any charging system diagnostic trouble codes (DTCs) recorded?
Yes Diagnose the PCM diagnostic trouble code. REFER TO: Engine Control Modules (303-14A Engine Control Modules - 2.3 L EcoBoost (201 kW/273 L PS), Diagnosis and Testing).
REFER TO: Engine Control Modules (303-14B Engine Control Modules - 3 L EcoBoost, Diagnosis and Testing).
REFER TO: Engine Control Modules (303-14C Engine Control Modules - 3.3 L Duratec-V6/3.3 L Duratec-V6 Hybrid (BP), Diagnosis and Testing).
No GO to Q3
Q3 CHECK THE BATTERY CONDITION AND CHARGE STATE
  • Check the battery condition and make sure the battery is fully charged.
    REFER TO: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery in good condition and fully charged?
Yes GO to Q4
No CHARGE or INSTALL a new battery.
To charge the battery,
REFER to: Battery Charging (414-01 Battery, Mounting and Cables, General Procedures). To install a new battery,
REFER to: Battery (414-01 Battery, Mounting and Cables, Removal and Installation).
Q4 CHECK THE HCM (HEADLAMP CONTROL MODULE) VOLTAGE
  • Ignition OFF.
  • Disconnect: HCM C2129.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2129-10 Ground

Is the voltage greater than 11 volts?
Yes GO to Q5
No REPAIR the faulty circuit for high resistance.
Q5 CHECK THE HCM (HEADLAMP CONTROL MODULE) PROCESSOR GROUND
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2129-13 Ground

Is the resistance less than 3 ohms?
Yes GO to Q6
No REPAIR the high resistance circuit.
Q6 CHECK THE HCM (HEADLAMP CONTROL MODULE) OPERATION
  • Disconnect and inspect the HCM connector.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the HCM connector. Make sure it is properly seated and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a module connection. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST R: U3003:17

For circuit and connector information, refer to Wiring Diagrams Cell 92.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
HCM U3003:17 Battery Voltage: Circuit Voltage Above Threshold Continuous memory and on-demand DTC that is set in the HCM if the HCM detects high battery voltage at the power supply input.

Possible Sources

  • Charging System Concern
  • HS-CAN
R1 CHECK FOR DTCS P0563 (PCM (POWERTRAIN CONTROL MODULE)), U3003:17 OR U3006:17 SET IN OTHER MODULES
  • The ignition is on.
  • Using a diagnostic scan tool, retrieve Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Are DTC U3003:17, U3006:17 or P0563 (PCM) set in more than one module?
Yes Diagnose the PCM diagnostic trouble code. REFER TO: Engine Control Modules (303-14A Engine Control Modules - 2.3 L EcoBoost (201 kW/273 L PS), Diagnosis and Testing).
REFER TO: Engine Control Modules (303-14B Engine Control Modules - 3 L EcoBoost, Diagnosis and Testing).
REFER TO: Engine Control Modules (303-14C Engine Control Modules - 3.3 L Duratec-V6/3.3 L Duratec-V6 Hybrid (BP), Diagnosis and Testing).
No GO to R2
R2 CHECK THE BATTERY VOLTAGE
  • Turn off all interior/exterior lamps and accessories.
  • Start the engine and run at approximately 2000 rpm for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 15.9 volts or higher?
Yes Diagnose the charging system. For the procedure, refer to the appropriate section in group 414.
No GO to R3
R3 RECHECK FOR DTC U3003:17
  • Turn the engine off.
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test.
  • Clear the continuous memory diagnostic trouble codes (CMDTC).
  • Perform the HCM self-test.

IS DTC U3003:17 STILL PRESENT?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating normally. The DTC may have been set previously during a battery charge or jump-start event.
PINPOINT TEST S: B14E2:11, B14E2:15, B14E3:11, B14E3:15, B1D02:11, B1D02:15, B1D03:11, B1D03:15

Refer to Wiring Diagrams, Cell 85, for circuit and connector information.

Normal Operation and Fault Symptoms

REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).
REFER TO: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
BCM B14E2:11 Exterior Lamp Power Supply "E": Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the power supply circuit of the left headlamp LED control module.
BCM B14E2:15 Exterior Lamp Power Supply "E": Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the power supply circuit of the left headlamp LED control module.
BCM B14E3:11 Exterior Lamp Power Supply "F": Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the power supply circuit of the right headlamp LED control module.
BCM B14E3:15 Exterior Lamp Power Supply "F": Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the power supply circuit of the right headlamp LED control module.
BCM B1D02:11 High Beam Circuit Left: Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the power supply circuit of the left headlamp LED control module.
BCM B1D02:15 High Beam Circuit Left: Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the power supply circuit of the left headlamp LED control module.
BCM B1D03:11 High Beam Circuit Right: Short to Ground Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the power supply circuit of the right headlamp LED control module.
BCM B1D03:15 High Beam Circuit Right: Short to Battery or Open Circuit Continuous memory and on-demand DTC that sets when the BCM detects an open in the power supply circuit of the right headlamp LED control module.

Possible Sources

  • Wiring, Terminals or Connectors
  • Headlamp Assembly
  • LED Control Module
  • BCM

Visual Inspection and Pre-checks

  • Inspect the headlamp assembly for damage.
S1 CHECK THE VOLTAGE AT THE HEADLAMP LED (LIGHT EMITTING DIODE) CONTROL MODULE POWER SUPPLY CIRCUIT
  • Ignition OFF.
  • Disconnect: For DTCs B14E2:11, B14E2:15, B1D02:11 or B1D02:15, Left Headlamp C1284.
  • Disconnect: For DTCs B14E3:11, B14E3:15, B1D03:11 or B1D03:15, Right Headlamp C1285.
  • The ignition is on.
  • Action:
    Click to display the connectors

    For DTCs B14E2:11, B14E2:15, B1D02:11 or B1D02:15, Left Headlamp


    Positive lead Measurement/Action Negative lead
    C1284-2 Ground

    Click to display the connectors

    For DTCs B14E3:11, B14E3:15, B1D03:11 or B1D03:15, Right Headlamp


    Positive lead Measurement/Action Negative lead
    C1285-2 Ground

Is the voltage greater than 11 volts?
Yes GO to S2
No GO to S3
S2 CHECK THE HEADLAMP LED (LIGHT EMITTING DIODE) CONTROL MODULE POWER SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
  • For halogen headlamps, set the headlamp switch to the OFF position.
  • Ignition OFF.
  • Disconnect: BCM C2280G.
  • The ignition is on.
  • Action:
    Click to display the connectors

    For DTCs B14E2:11, B14E2:15, B1D02:11 or B1D02:15, Left Headlamp


    Positive lead Measurement/Action Negative lead
    C1284-2 Ground

    Click to display the connectors

    For DTCs B14E3:11, B14E3:15, B1D03:11 or B1D03:15, Right Headlamp


    Positive lead Measurement/Action Negative lead
    C1285-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to S6
S3 REPEAT THE ON-DEMAND SELF-TEST AND CHECK THE VOLTAGE AT THE HEADLAMP LED (LIGHT EMITTING DIODE) CONTROL MODULE POWER SUPPLY CIRCUIT
  • Using a scan tool, perform the BCM self-test.
  • Clear the diagnostic trouble codes (DTCs) and repeat the self-test (required to enable the lamp output driver).
  • Ignition OFF.
  • The ignition is on.
  • Action:
    Click to display the connectors

    For DTCs B14E2:11, B14E2:15, B1D02:11 or B1D02:15, Left Headlamp


    Positive lead Measurement/Action Negative lead
    C1284-2 Ground

    Click to display the connectors

    For DTCs B14E3:11, B14E3:15, B1D03:11 or B1D03:15, Right Headlamp


    Positive lead Measurement/Action Negative lead
    C1285-2 Ground

Is the voltage greater than 11 volts?
Yes GO to S6
No GO to S4
S4 CHECK THE HIGH BEAM CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Turn the headlamp switch to the OFF position.
  • Disconnect: BCM C2280G.
  • Action:
    Click to display the connectors

    For DTCs B14E2:11, B14E2:15, B1D02:11 or B1D02:15, Left Headlamp


    Positive lead Measurement/Action Negative lead
    C1284-2 Ground

    Click to display the connectors

    For DTCs B14E3:11, B14E3:15, B1D03:11 or B1D03:15, Right Headlamp


    Positive lead Measurement/Action Negative lead
    C1285-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to S5
No REPAIR the circuit. After the repair:
If no diagnostic trouble codes (DTCs) are present, CHECK the system for normal operation.
If DTC U1000:00 is present, CLEAR the diagnostic trouble codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present).
If DTC U3000:49 is present, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
S5 CHECK THE HIGH BEAM POWER SUPPLY CIRCUIT FOR AN OPEN
  • Action:
    Click to display the connectors

    For DTCs B14E2:11, B14E2:15, B1D02:11 or B1D02:15, Left Headlamp


    Positive lead Measurement/Action Negative lead
    C1284-2 Ground

    Click to display the connectors

    For DTCs B14E3:11, B14E3:15, B1D03:11 or B1D03:15, Right Headlamp


    Positive lead Measurement/Action Negative lead
    C1285-2 Ground

Is the resistance less than 3 ohms?
Yes GO to S7
No REPAIR the circuit.
S6 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE
  • Turn the headlamp switch to the OFF position.
  • Ignition OFF.
  • Replace the known good LED control module from the opposite headlamp.
  • Connect: the non-working left headlamp C1284 or right headlamp C1285.
  • The ignition is on.
  • CLEAR the diagnostic trouble codes (DTCs), REPEAT the self-test (required to enable the lamp output driver) and cycle the ignition OFF and ON. REPEAT the self-test.
  • Operate the system and determine if the concern is still present.

Does the condition persist or are any diagnostic trouble codes (DTCs) returned?
Yes REMOVE the known good LED control module. INSTALL a new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
No REMOVE the known good LED control module. INSTALL a new LED control module.
REFER TO: Light-Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).
S7 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

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