Ford Escape: Exterior Lighting / Diagnosis and Testing

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

Global Customer Symptom Codes (GCSC) Table

Symptom	Action
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test A
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test B
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test C
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test D
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test E
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test G
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Inoperative	GO to Pinpoint Test H
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Stuck On	GO to Pinpoint Test A
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Stuck On	GO to Pinpoint Test B
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Stuck On	GO to Pinpoint Test C
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Stuck On	GO to Pinpoint Test G
Lighting/Glass/Vision > Exterior Lighting > Headlamps > Stuck On	GO to Pinpoint Test H

Symptom Chart

Symptom Chart: Headlamps

Condition	Action
Module Does Not Respond to Diagnostic Scan Tool	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
One or both low beams inoperative or always on	GO to Pinpoint Test A
One or both high beams inoperative or constantly on – halogen headlamps	GO to Pinpoint Test B
One or both high beams inoperative or constantly on – LED headlamps	GO to Pinpoint Test C
Flash-to-pass function inoperative	GO to Pinpoint Test D
Automatic high beam function inoperative	GO to Pinpoint Test E
Manual headlamp level control inoperative/incorrect operation – China only	GO to Pinpoint Test G
Automatic headlamp level control inoperative or incorrect operation – China only	GO to Pinpoint Test H

Pinpoint Tests

DIAGNOSTIC 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 does not receive 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 has lost 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 message from the headlamp switch over the LIN circuit indicates the headlamp switch has an internal fault.
BCM B1533:56	Headlamp Switch Module: Incorrect/Incompatible Configuration	Continuous memory and on-demand DTC that sets when the BCM exceeds the LIN circuit and detects that the headlamp switch is not configured correctly.
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

Wiring, Terminals or Connectors
Lamp
Headlamp Assembly
BCM

Visual Inspection and Pre-checks

Inspect the headlamp assembly for damage.
Inspect the headlamp switch for damage.
Inspect BCM fuse 19 (7.5 A).

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

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

GO to A9

A3 CHECK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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 LIN New Module Initialization procedure. Follow the diagnostic scan tool directions. If the initialization procedure fails, INSTALL a new headlamp switch.
REFER TO: Headlamp Switch (417-01 Exterior Lighting, Removal and Installation).

GO to A17

A4 CHECK THE HEADLAMP SWITCH POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the 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 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER TO the Electrical Circuit Diagram to determine possible causes of the short.

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 C2280D.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C205-6 C2280D-32

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

C2280D-32 Ground

Is there voltage present?

Yes

REPAIR the circuit.

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

C2280D-32 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 the C2280E connector.

Disconnect the left headlamp C1021 or right headlamp C1041 for halogen headlamps.

Disconnect the left headlamp C1284 or right headlamp C1285 for LED headlamps.

The ignition is on.

For halogen headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-3 Ground

For LED headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-3 Ground

Is there voltage present?

Yes

REPAIR the circuit.

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

GO to A11

A11 CHECK THE HEADLAMP VOLTAGE

Ignition OFF.

Turn the headlamp switch to the OFF position.

Disconnect the inoperative left headlamp C1021 or right headlamp C1041 for halogen headlamps.

Disconnect the inoperative left headlamp C1284 or right headlamp C1285 for LED headlamps.

The ignition is on.

Set the headlamp switch to the HEADLAMPS ON position.

For halogen headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-3 Ground

For LED headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-3 Ground

Is the voltage greater than 11 volts?

Yes

GO to A13

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.

For halogen headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-3 Ground

For LED headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-3 Ground

Is the voltage greater than 11 volts?

Yes

For halogen headlamps, INSTALL a new low beam bulb.
REFER TO: Headlamp Bulb (417-01 Exterior Lighting, Removal and Installation).
CHECK the system for normal operation. If the condition persists, INSTALL a new headlamp assembly. REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation). For LED headlamps: GO to A16.

GO to A14

A13 CHECK THE HEADLAMP GROUND CIRCUIT FOR AN OPEN

For halogen headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-3 C1021-7

C1021-3 C1021-8

C1021-3 C1021-9

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-3 C1041-7

C1041-3 C1041-8

C1041-3 C1041-9

For LED headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-3 C1284-8

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-3 C1285-8

Is the voltage greater than 11 volts?

Yes

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 the C2280E connector.

For halogen headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-3 Ground

For LED headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-3 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-3 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to A15

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

For halogen headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-3 C2280E-1

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-3 C2280E-39

For LED headlamps, measure:
Click to display connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-3 C2280E-1

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-3 C2280E-39

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 with a known good LED control module from the opposite headlamp.

Connect. For halogen headlamps, non-working left headlamp C1021 or right headlamp C1041.

Connect. For LED headlamps, 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.

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 articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article resolves this condition, 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 B: ONE OR BOTH HIGH BEAMS INOPERATIVE OR ALWAYS ON - HALOGEN HEADLAMPS

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

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
BCM B14E2:11	Exterior Lamp Power Supply 'E' Circuit Shorted to Ground	Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the left high beam output circuit.
BCM B14E2:15	Exterior Lamp Power Supply 'E' Circuit Shorted to Battery or Open	Continuous memory and on-demand DTC that sets when the BCM detects an open in the left high beam output circuit.
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 right high beam output circuit.
BCM B14E3:15	Exterior Lamp Power Supply 'F' Circuit Shorted to Battery or Open	Continuous memory and on-demand DTC that sets when the BCM detects an open in the right high beam output circuit.
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 left high beam output circuit.
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 left high beam output circuit.
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 right high beam output circuit.
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 right high beam output circuit.

Possible Sources

Fuse
Wiring, Terminals or Connectors
Lamp
Headlamp Assembly
Multifunction Switch on the LH Steering Column
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.

Set 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 does not operate, GO to B5.
If both high beams do not operate, GO to B4.
If one high beam is always on, GO to B3.
If both high beams are always on, GO to B2.

No	GO to Pinpoint Test A

B2 CHECK THE LEFT (LH) HIGH BEAM MULTIFUNCTION SWITCH INPUT

When the left multifunction switch on the steering column is in the high beam position,
Access the SCCM and monitor the HIGH_BEAM_SW PID.

Do the PID values match the left multifunction switch position on the steering column?

Yes

GO to B11

No	INSTALL a new left multifunction switch on the steering column. Refer to: Left Multifunction Switch on the Steering Column (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). CHECK the system for normal operation. If the condition persists, GO to B10.

B3 CHECK THE HIGH BEAM VOLTAGE SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE

For halogen headlamps, set the headlamp switch to the OFF position.

Ignition OFF.

Disconnect the C2280E connector.

Disconnect the left headlamp C1021 or the right headlamp C1041.

The ignition is on.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-4 Ground

Is there voltage present?

Yes

REPAIR the circuit.

GO to B11

B4 CHECK THE LEFT (LH) 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 B11

No	INSTALL a new left multifunction switch on the steering column. Refer to: Left Multifunction Switch on the Steering Column (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). CHECK the system for normal operation. If the condition persists, GO to B10.

B5 CHECK THE HEADLAMP HIGH BEAM CIRCUIT VOLTAGE

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 the non-working left headlamp C1021 or the right headlamp C1041.

Set the headlamp switch to the HEADLAMPS position and the left multifunction switch on the steering column to the HIGH BEAM position.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-4 Ground

Is the voltage greater than 11 volts?

Yes

GO to B9

GO to B6

B6 REPEAT THE ON-DEMAND SELF-TEST AND CHECK THE LOW BEAM HEADLAMP CIRCUIT VOLTAGE

Set the headlamp switch to the OFF position and the left multifunction switch on the steering column to the LOW BEAM 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 position and the left multifunction switch on the steering column to the HIGH BEAM position.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-4 Ground

Is the voltage greater than 11 volts?

Yes

INSTALL a new high beam bulb.
REFER TO: Headlamp Bulb (417-01 Exterior Lighting, Removal and Installation).
CHECK the system for normal operation. If the condition persists, INSTALL a new headlamp assembly. REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).

GO to B7

B7 CHECK THE HIGH BEAM CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Turn the headlamp switch to the OFF position.

Disconnect the C2280E connector.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-4 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to B8

B8 CHECK THE HIGH BEAM POWER SUPPLY CIRCUIT FOR AN OPEN

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-4 C2280E-40

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-4 C2280E-38

Is the resistance less than 3 ohms?

Yes

GO to B11

No	REPAIR the circuit.

B9 CHECK THE GROUND CIRCUIT FOR AN OPEN

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-4 C1021-7

C1021-4 C1021-8

C1021-4 C1021-9

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-4 C1041-7

C1041-4 C1041-8

C1041-4 C1041-9

Is the voltage greater than 11 volts?

Yes

No	REPAIR the faulty circuit.

B10 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 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 address 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.

B11 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

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 C: ONE OR BOTH HIGH BEAMS INOPERATIVE OR ALWAYS ON - LED (LIGHT EMITTING DIODE) HEADLAMPS

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

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
BCM B14E2:11	Exterior Lamp Power Supply 'E' Circuit Shorted to Ground	Continuous memory and on-demand DTC that sets when the BCM detects a short to ground in the left high beam output circuit.
BCM B14E2:15	Exterior Lamp Power Supply 'E' Circuit Shorted to Battery or Open	Continuous memory and on-demand DTC that sets when the BCM detects an open in the left high beam output circuit.
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 right high beam output circuit.
BCM B14E3:15	Exterior Lamp Power Supply 'F' Circuit Shorted to Battery or Open	Continuous memory and on-demand DTC that sets when the BCM detects an open in the right high beam output 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	Continuous memory and on-demand DTC that sets when the BCM detects a message failure from the 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.
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	Continuous memory and on-demand DTC that sets when the BCM detects 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 headlamp LED control module.
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	Continuous memory and on-demand DTC that sets when the BCM detects 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.
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 left high beam output circuit.
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 left high beam output circuit.
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 right high beam output circuit.
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 right high beam output circuit.

Possible Sources

Fuse
Wiring, Terminals or Connectors
Headlamp Assembly
Multifunction Switch on the LH Steering Column
SCCM
BCM

Visual Inspection and Pre-checks

Inspect the headlamp assembly for damage.

C1 CHECK THE HIGH BEAM OPERATION

The ignition is on.

Set the headlamp switch to the HEADLAMPS position.

Set 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 both high beams not operate or remain on continuously?

Yes

GO to C3

No	For BCM DTC B14E2:15, B14E3:15, B1D02:15 or B1D03:15, GO to C2. For all other Diagnostic Trouble Codes (DTCs) or if no DTCs are present, GO to C7.

C2 CHECK THE HIGH BEAM VOLTAGE SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE

For halogen headlamps, set the headlamp switch to the OFF position.

Ignition OFF.

Disconnect the C2280E connector.

Disconnect the LH headlamp C1284 or the RH headlamp C1285.

The ignition is on.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-4 Ground

Is there voltage present?

Yes

REPAIR the circuit.

GO TO C14

C3 CHECK THE LH (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 C4

No	INSTALL a new LH multifunction switch on the steering column. Refer to: LH Multifunction Switch on the Steering Column (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). CHECK the system for normal operation. If the concern still exists, GO to C13.

C4 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 C2280E.

Disconnect the LH headlamp C1284 and the RH headlamp C1285.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280E-16 Ground

Is there voltage present?

Yes

REPAIR the circuit.

GO to C5

C5 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

C2280E-16 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to C6

No	REPAIR the circuit.

C6 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

C2280E-16 C1284-16

Is the resistance less than 3 ohms?

Yes

GO TO C14

No	REPAIR the circuit.

C7 CHECK THE HEADLAMP HIGH BEAM CIRCUIT VOLTAGE

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 the non-operating LH headlamp C1284 or RH headlamp C1285.

Set the headlamp switch to the HEADLAMPS position and the left multifunction switch on the steering column to the HIGH BEAM position.

The ignition is on.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-4 Ground

Is the voltage greater than 11 volts?

Yes

GO TO C12

GO TO C8

C8 REPEAT THE ON-DEMAND SELF-TEST AND CHECK THE HEADLAMP LOW BEAM CIRCUIT VOLTAGE

Set the headlamp switch to the OFF position and the left multifunction switch on the steering column to the LOW BEAM 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 position and the left multifunction switch on the steering column to the HIGH BEAM position.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-4 Ground

Is the voltage greater than 11 volts?

Yes

GO TO C11

GO TO C9

C9 CHECK THE HIGH BEAM CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Turn the headlamp switch to the OFF position.

Disconnect the C2280E connector.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-4 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-4 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO TO C10

C10 CHECK THE HIGH BEAM SUPPLY CIRCUIT FOR AN OPEN

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-4 C2280E-40

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-4 C2280E-38

Is the resistance less than 3 ohms?

Yes

GO TO C14

No	REPAIR the circuit.

C11 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 the non-operating LH headlamp C1284 or RH headlamp C1285.

Disconnect: BCM C2280E.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1284-16 C2280E-16

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1285-16 C2280E-16

Is the resistance less than 3 ohms?

Yes

GO TO C12

No	REPAIR the circuit.

C12 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE

Replace the known good LED control module from the opposite headlamp.

Connect: all disconnected connectors.

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.

C13 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

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.

C14 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

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

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	GO to Pinpoint Test B

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 PID.

Do the PID values match the left multifunction switch position on the steering column?

Yes

GO to D4

No	INSTALL a new LH multifunction switch on the steering column. Refer to: LH Multifunction Switch on the Steering Column (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). CHECK the system for normal operation. If the concern still exists, 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

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

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

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	GO to Pinpoint Test B

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).

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).

DIAGNOSTIC TEST F: B124C:96, B124C:9E

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

Normal Operation and Fault Symptoms

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 is set when the SCCM detects an internal fault in the LH multifunction switch on the steering column.
SCCM B124C:9E	Turn signal switch pack: stuck in on position	Continuous memory and on-demand DTC that is set when the SCCM detects that the LH multifunction switch on the steering column has been in a 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 LH multifunction switch on the steering column.
Refer to: LH Multifunction Switch on the Steering Column (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.

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

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 G: MANUAL HEADLAMP LEVELING INOPERATIVE OR INCORRECT OPERATION - CHINA ONLY

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

Normal Operation and Fault Symptoms

Possible Sources

Fuse
Wiring, Terminals or Connectors
Headlamp Assembly
Headlight Switch

Visual Inspection and Pre-checks

Inspect the headlamp assembly for damage.
Inspect the headlamp switch for damage.
CHECK the BJB 21 (10A) fuse for correct operation.

G1 CHECK HEADLAMP ALIGNMENT ADJUSTMENT

The ignition is on.

Set the headlamp switch to the HEADLAMPS position.

While observing both headlamps,
- Press and release the headlamp leveling switch.
- Adjust the headlamp leveling setting to 4.
- Press the headlamp leveling switch until it latches.

Does the light level of either headlamp change?

Yes

GO to G2

No	VERIFY that the BJB 21 (10A) fuse is in good condition. If OK, GO to G4. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of a short circuit.

G2 CHECK THE HEADLAMP LEVELING MOTOR NON-RUNNING VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: Left Headlamp C1021 or Right Headlamp C1041.

The ignition is on.

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-10 Ground

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-10 Ground

Is the voltage greater than 11 volts?

Yes

GO to G3

No	REPAIR the circuit

G3 CHECK THE HEADLAMP LEVELING MOTOR NON-RUNNING GROUND CIRCUIT FOR AN OPEN

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C1021-10 C1021-8

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C1041-10 C1041-8

Is the voltage greater than 11 volts?

Yes

GO to G4

No	REPAIR the circuit.

G4 CHECK THE HEADLAMP LEVELING MOTOR CIRCUIT TO THE HEADLAMP LEVELING MOTOR FOR AN OPEN

Disconnect: Headlamp Switch C205 (if not previously disconnected).

Disconnect: Left Headlamp C1021 and Right Headlamp C1041 (both not working).

Disconnect: Left Headlamp C1021 (only left not working).

Disconnect: Right Headlamp C1041 (only right not working).

Action:
Click to display the connectors
Both or only left not working

Positive lead Measurement/Action Negative lead

C1021-13 C205-16

Click to display the connectors
Only right not working

Positive lead Measurement/Action Negative lead

C1041-13 C205-16

Is the resistance less than 3 ohms?

Yes

If only the left or right headlamp is not working, INSTALL a new headlamp assembly.
REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation). If both are not working, GO to G5.

No	REPAIR the circuit.

G5 CHECK THE HEADLAMP LEVELING MOTOR CIRCUIT TO THE HEADLAMP LEVELING MOTOR FOR A SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C205-16 Ground

Is there voltage present?

Yes

REPAIR the circuit.

GO to G6

G6 CHECK THE HEADLAMP LEVELING MOTOR CIRCUIT TO THE HEADLAMP LEVELING MOTOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C205-16 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).

No	REPAIR the circuit.

DIAGNOSTIC TEST H: AUTOMATIC HEADLAMP LEVELING INOPERATIVE OR INCORRECT OPERATION - CHINA ONLY

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

Normal Operation and Fault Symptoms

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 left headlamp leveling motor on the LIN circuit that the headlamp leveling actuator is malfunctioning.
HCM B1437:87	Left Levelling Actuator: Missing Message	Continuous memory and on-demand DTC that sets when the HCM does not receive a message from the left headlamp leveling actuator on the LIN circuit.
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 right headlamp leveling motor on the LIN circuit that the headlamp leveling actuator is malfunctioning.
HCM B1439:87	Right Levelling Actuator: Missing Message	Continuous memory and on-demand DTC that sets when the HCM does not receive a message from the right headlamp leveling actuator on the LIN circuit.

Possible Sources

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

Visual Inspection and Pre-checks

Inspect the BJB 21 (10A) fuse.
Inspect the headlamp for damage.

H1 CHECK HIGH BEAM OPERATION

The ignition is on.

Set the headlamp switch to the HEADLAMPS position.

Set 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.

Does the high beam operate correctly?

Yes

GO to H2

No	GO to Pinpoint Test C

H2 CHECK HEADLAMP ALIGNMENT

The ignition is on.

Set the headlamp switch to the HEADLAMPS ON position.

While observing both headlamps, drive the vehicle to activate the automatic headlamp leveling system.
REFER to: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).

Does either headlamp have automatic leveling?

Yes

GO to H4

No	VERIFY that the BJB 21 (10A) fuse is in good condition. If OK, GO to H3. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of a short circuit.

H3 CHECK THE HEADLAMP LEVELING VOLTAGE SUPPLY CIRCUIT VOLTAGE

Ignition OFF.

Disconnect: Left Headlamp C1284.

The ignition is on.

Action:
Click to display the connectors
Left Motor

Positive lead Measurement/Action Negative lead

C1284-10 Ground

Is the voltage greater than 11 volts?

Yes

GO to H8

No	REPAIR the circuit.

H4 CHECK THE HEADLAMP LEVELING ACTUATING VOLTAGE SUPPLY CIRCUIT VOLTAGE

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

C1284-10 Ground

Click to display the connectors
Right Motor

Positive lead Measurement/Action Negative lead

C1285-10 Ground

Is the voltage greater than 11 volts?

Yes

GO to H5

GO to H6

H5 CHECK THE HEADLAMP LEVELING ACTUATING GROUND CIRCUIT FOR AN OPEN

Action:
Click to display the connectors
Left Motor

Positive lead Measurement/Action Negative lead

C1284-10 C1284-8

Click to display the connectors
Right Motor

Positive lead Measurement/Action Negative lead

C1285-10 C1285-8

Is the voltage greater than 11 volts?

Yes

GO to H7

No	REPAIR the faulty circuit.

H6 CHECK THE HEADLAMP LEVELING ACTUATING VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: BJB C1035A.

Action:
Click to display the connectors
Left Motor

Positive lead Measurement/Action Negative lead

C1284-10 C1035A-35

Click to display the connectors
Right Motor

Positive lead Measurement/Action Negative lead

C1285-10 C1035A-35

Is the resistance less than 3 ohms?

Yes

INSTALL a new BJB.

No	REPAIR the circuit.

H7 CHECK HCM (HEADLAMP CONTROL MODULE) OPERATION (ONE LAMP LEVELING NOT WORKING)

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 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 address this concern, INSTALL a new HCM.

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.

H8 CHECK HCM (HEADLAMP CONTROL MODULE) OPERATION (BOTH HEADLAMP LEVELING NOT WORKING)

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

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 I: FRONT OR REAR HEIGHT SENSOR INOPERATIVE

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

Normal Operation and Fault Symptoms

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 to the height sensors is less than 4.75 volts or more than 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 a short to voltage in the front headlamp leveling sensor feedback circuit.
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 open or a short to ground in the front headlamp leveling sensor feedback circuit.
HCM C1A03:29	Left Front Height Sensor: Incorrect Signal	Continuous memory and on-demand DTC that sets when the HCM detects a front headlamp leveling sensor feedback signal that is not consistent with vehicle operation, for example, vehicle acceleration without a change in the signal.
HCM C1A03:64	Left Front Height Sensor: Signal Not Plausible	Continuous memory and on-demand DTC that sets when the HCM detects a front headlamp leveling sensor feedback signal that is not consistent with vehicle operation, for example, vehicle acceleration without a change in the signal.
HCM C1A05:12	Left Rear Height Sensor: Short to Battery	Continuous memory and on-demand DTC that sets when the HCM detects a short to voltage in the rear headlamp leveling sensor feedback circuit.
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 open circuit or a short to ground in the rear headlamp leveling sensor feedback circuit.
HCM C1A05:29	Left Rear Height Sensor: Incorrect Signal	Continuous memory and on-demand DTC that sets when the HCM detects a rear headlamp leveling sensor feedback signal that is not consistent with vehicle operation, for example, vehicle acceleration without a change in the signal.
HCM C1A05:64	Left Rear Height Sensor: Signal Not Plausible	Continuous memory and on-demand DTC that sets when the HCM detects a rear headlamp leveling sensor feedback signal that is not consistent with vehicle operation, for example, vehicle acceleration without a change in the signal.

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.

I1 CHECK THE HEADLAMP LEVEL SENSOR POWER SUPPLY VOLTAGE

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 I5

No	If the voltage is less than 5 volts, GO to I2. If the voltage is greater than 5 volts, GO to I4.

I2 CHECK THE HEADLAMP LEVEL SENSOR POWER 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 I3

No	REPAIR the circuit.

I3 CHECK THE HEADLAMP LEVEL SENSOR POWER 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 I11

No	REPAIR the circuit.

I4 CHECK THE HEADLAMP LEVEL SENSOR POWER 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.

GO to I11

I5 CHECK THE HEADLAMP LEVEL 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 I8

GO to I6

I6 CHECK THE HEADLAMP LEVEL 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.

GO to I7

I7 CHECK THE HEADLAMP LEVEL 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 I11

No	REPAIR the circuit.

I8 CHECK THE HEADLAMP LEVEL SENSOR FEEDBACK 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.

GO to I9

I9 CHECK THE HEADLAMP LEVEL SENSOR FEEDBACK 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 I10

No	REPAIR the circuit.

I10 CHECK THE HEADLAMP LEVEL SENSOR FEEDBACK 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 level sensor. CLEAR the DTCs. REPEAT the self-test. If the DTC returns, GO to I11.

No	REPAIR the circuit.

I11 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

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 J: B14DB:01, B14DB:54, B14DB:55, B14DB:87, B14DC:01, B14DC:54, B14DC:55, B14DC:87, B1559:96, B155A:96

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

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
HCM B14DB: 01	Left Headlamp Driver Control System: General Electrical Failure	Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module in the LH headlamp LIN circuit indicating a headlamp driver control system failure.
HCM B14DB: 54	Left Headlamp Driver Control System: Calibration Missing	Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module in the LH headlamp LIN circuit indicating that the headlamp driver control system is not calibrated.
HCM B14DB: 55	Left Headlamp Driver Control System: Not Configured	Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module in the LH headlamp LIN circuit indicating that the headlamp driver control system is not configured.
HCM B14DB: 87	Left Headlamp Driver Control System: Missing Message	Continuous memory and on-demand DTC that sets when the HCM does not receive a headlamp driver control system message from the lower installed LED control module on the LH headlamp CAN circuit.
HCM B14DC:01	Right Headlamp Driver Control System: General Electrical Failure	Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module in the RH headlamp LIN circuit indicating a headlamp driver control system failure.
HCM B14DC: 54	Right Headlamp Driver Control System: Calibration Missing	Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module in the RH headlamp LIN circuit indicating that the headlamp driver control system is not calibrated.
HCM B14DC: 55	Right Headlamp Driver Control System: Not Configured	Continuous memory and on-demand DTC that sets when the HCM receives a message from the LED control module in the RH headlamp LIN circuit indicating that the headlamp driver control system is not configured.
HCM B14DC: 87	Right Headlamp Driver Control System: Missing Message	Continuous memory and on-demand DTC that sets when the HCM does not receive a headlamp driver control system message from the LED control module in the RH headlamp LIN circuit.
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 for the inner headlamp in the LH headlamp LIN circuit indicating a component failure within the headlamp assembly.
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 for the inner headlamp in the RH headlamp LIN circuit indicating a component failure within the headlamp assembly.

Possible Sources

Headlamp Assembly
Lower Headlamp LED Control Module
HS-CAN

Visual Inspection and Pre-checks

Inspect the headlamp for damage.

J1 CHECK THE HEADLAMP SERIES TYPE

Inspect the headlamps and check the headlamp type descriptions in this section.
REFER TO: Exterior Lighting - Overview (417-01 Exterior Lighting, Description and Operation).

Is the vehicle equipped with low series headlamps?

Yes

GO to J3

GO to J2

J2 CHECK THE INNER HEADLAMP LIGHT EMITTING DIODE (LED) CONTROL MODULE

Ignition OFF.

Swap the known good inner headlamp 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

GO to J3

No	REMOVE the known good inner headlamp LED control module. INSTALL a new inner headlamp LED control module. REFER TO: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).

J3 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, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HCM. REPEAT the self-test. If the DTC returns, 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.

DIAGNOSTIC TEST K: U0121:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
HCM U0121:00	Lost Communication with Anti-Lock Brake System (ABS) Control Module 'A': No Sub-type Information	Continuous memory and on-demand DTC that sets when 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

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 fault.

K2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the ABS module pass the network test?

Yes

GO to K3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

K3 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).

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 U0121:00 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 fault.

K5 CHECK DTC 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. REFER TO: Anti-Lock Brake System (ABS) Module (206-09 Anti-Lock Brake System (ABS) and Stability Control System, Removal and Installation) (ABS module part of HCU).
REFER TO: Hydraulic Control Unit (HCU) - Vehicles With: Vacuum Brake Booster (206-09 Anti-Lock Brake System (ABS) and Stability Control System, Removal and Installation) (ABS module part of HCU).
REFER TO: Hydraulic Control Unit (HCU) - Vehicles With: Vacuum Brake Booster (206-09 Anti-Lock Brake System (ABS) and Stability Control System, Removal and Installation).

No	INSTALL a new HCM.

DIAGNOSTIC TEST L: U0146:00

Normal Operation and Fault Symptoms

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 set 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

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 fault.

L2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the GWM pass the network test?

Yes

GO to L3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

L3 PERFORM 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).

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 U0146:00 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 fault.

L5 CHECK DTC 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 U0121:00 set in the BCM?

Yes

INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	INSTALL a new HCM.

DIAGNOSTIC TEST M: U0212:00

Normal Operation and Fault Symptoms

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 set 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

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 fault.

M2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the SCCM pass the network test?

Yes

GO to M3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

M3 PERFORM 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).

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 U0212:00 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 fault.

M5 CHECK DTC 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.

DIAGNOSTIC TEST N: U0151:00

Normal Operation and Fault Symptoms

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 set in continuous memory in the HCM if data messages received from the RCM are not present for 5 seconds or longer.

Possible Sources

Communication Problem
Battery Voltage Concern
RCM
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 fault.

N2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the RCM pass the network test?

Yes

GO to N3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

N3 PERFORM 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).

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 U0151:00 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 fault.

N5 CHECK DTC 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 OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article resolves this condition, INSTALL a new RCM.
REFER TO: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

No	INSTALL a new HCM.

DIAGNOSTIC TEST O: U023A:00

Normal Operation and Fault Symptoms

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 set in continuous memory in the HCM if data messages received from the IPMA are not present for 5 seconds or longer.

Possible Sources

Communication Problem
Battery Voltage Concern
IPMA
HS-CAN

O1 CONFIRM THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to O2

No	The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault.

O2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the IPMA pass the network test?

Yes

GO to O3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

O3 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).

GO to O4

O4 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 O5

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

O5 CHECK DTC 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 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 articles address this concern, INSTALL a new IPMA.
REFER TO: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).

No	INSTALL a new HCM.

DIAGNOSTIC TEST P: 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

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

P1 CHECK 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).

GO to P2

P2 CHECK 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

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 Q: U0415:00, U0416:00, U0429:00, U0447:00, U0452:00, U053B:00

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

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
HCM U0415:00	Invalid 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

Q1 REPEAT ON-DEMAND SELF-TEST AND CHECK 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, REFER to the ABS diagnostic trouble codes (DTC).
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). For DTC U0429:00, REFER to the SCCM diagnostic trouble codes (DTC).
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering System). Steering Wheel and Column Electrical Components, Diagnosis and Testing. For DTC U0447:00, REFER to the GWM diagnostic trouble codes (DTC).
REFER to: Communication Network (418-00 Communication Network, Diagnosis and Testing). For DTC U0452:00, REFER to the RCM diagnostic trouble codes (DTC).
REFER to: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). For DTC U053B:00, REFER to the IPMA diagnostic trouble codes (DTC).
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).

DIAGNOSTIC TEST R: U3003:16

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

Normal Operation and Fault Symptoms

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

R1 PERFORM 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 R2

No	The system is currently operating correctly. The DTC may have been set due to a previous low battery voltage condition.

R2 CHECK FOR 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 trouble code. REFER to: Electronic Engine Controls (303-14A Electronic Engine Controls). Engine - 1.5 L EcoBoost (132 kW/180 L PS) - I3 (Y1), Diagnosis and Testing.
REFER to: Electronic Engine Controls (303-14B Electronic Engine Controls) - 2 L EcoBoost (177 kW/240 L PS) - MI4, Diagnosis and Testing.
REFER to: Electronic Engine Controls (303-14C Electronic Engine Controls, Diagnosis and Testing).

GO to R3

R3 CHECK BATTERY CONDITION AND CHARGE

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 R4

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).

R4 CHECK 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 R5

No	REPAIR the high resistance circuit.

R5 CHECK 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 R6

No	REPAIR the high resistance circuit.

R6 CHECK 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

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.

DIAGNOSTIC TEST S: U3003:17

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

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

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

Possible Sources

Charging System Concern
HS-CAN

S1 CHECK DIAGNOSTIC TROUBLE CODES (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 trouble code. REFER to the main DTC chart.

GO to S2

S2 CHECK 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. REFER to: Charging System - 1.5 L EcoBoost (132 kW/180 L PS) - I3 (Y1) (414-00 Charging System - General Information, Diagnosis and Testing).
REFER to: Charging System - 2 L EcoBoost (177 kW/240 L PS) - MI4 (414-00 Charging System - General Information, Diagnosis and Testing).

GO to S3

S3 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) 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

No	The system is currently operating normally. The DTC may have been set previously during battery charging or when jump-starting the vehicle.

DIAGNOSTIC TEST T: B1087:83, B1087:86, B1088:83, B1088:86

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

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
HCM B1087:83	LIN bus 'A': Incorrect signal protection calculation value	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 calculation value	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': Invalid signal	Continuous memory and on-demand DTC that is set when the HCM detects a fault in the right headlamp LIN circuit.

Possible Sources

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

Visual Inspection and Pre-checks

Inspect the headlamp assembly for damage.

T1 CHECK HCM (HEADLAMP CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS 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.

GO to T2

T2 CHECK HCM (HEADLAMP CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS 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 T3

No	REPAIR the circuit.

T3 CHECK HCM (HEADLAMP CONTROL MODULE) LIN (LOCAL INTERCONNECT NETWORK) CIRCUITS FOR OPEN

Action:
Click to display the connectors
LH headlamp

Positive lead Measurement/Action Negative lead

C2129-1 C1284-14

Click to display the connectors
Right headlamp

Positive lead Measurement/Action Negative lead

C2129-6 C1285-14

Is the resistance less than 3 ohms?

Yes

GO to T4

No	REPAIR the circuit.

T4 CHECK HEADLAMP LED (LIGHT EMITTING DIODE) CONTROL MODULE

Turn the headlamp switch to the OFF position.

Ignition OFF.

Swap the known good inner headlamp 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 (DTC), REPEAT the self-test and cycle the ignition.

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 installed in the headlamp. INSTALL the original internal LED headlamp control module. GO to T5.

No	REMOVE the known-good LED control module installed in the headlamp. INSTALL a new internal headlamp LED control module. REFER to: Light Emitting Diode (LED) Control Module (417-01 Exterior Lighting, Removal and Installation).

T5 CHECK HCM (HEADLAMP CONTROL MODULE)

Ignition OFF.

INSTALL a new HCM.

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

INSTALL the new headlamp assembly.
REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).

No	The system is currently operating correctly. The concern was caused by the HCM.

T6 CHECK 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 that they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

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.

Diagnosis and Testing - Headlamps

Diagnostic Trouble Code (DTC) Chart

Diagnostic Trouble Code Chart

Global Customer Symptom Codes (GCSC) Table

Symptom Chart

Symptom Chart: Headlamps

Pinpoint Tests

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Visual Inspection and Pre-checks

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Visual Inspection and Pre-checks

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Visual Inspection and Pre-checks

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

LH headlamp

Right headlamp

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

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

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

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

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

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms