Diagnosis and Testing - Daytime Running Lamps (DRL)
In this manual: Electrical
~9min read
Diagnostic Trouble Code (DTC) Chart
The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures. REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).
Diagnostic Trouble Code Chart
Module
Trouble Code
Description
Action
BCM
B124A:11
Right DRL: Short to Ground
GO to Pinpoint Test A
BCM
B124A:15
Right DRL: Short to Battery or Open
GO to Pinpoint Test A
BCM
B124B:11
Left DRL: Short to Ground
GO to Pinpoint Test A
BCM
B124B:15
Left DRL: Short to Battery or Open
GO to Pinpoint Test A
Global Customer Symptom Codes (GCSC) Table
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).
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).
Symptom Chart
Condition
Action
Module Does Not Respond to Diagnostic Scan Tool
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
DRLs do not operate or are always on
GO to Pinpoint Test A
One or both DRL / front park lamp LEDs do not dim when the park lamps are on, or do not get brighter when the park lamps are off - mid and high series headlamps
REFER TO: Parking, Tail and License Plate Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
Pinpoint Tests
DIAGNOSTIC TEST A: DRL DO NOT OPERATE OR ARE 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 B124A: 11
Right DRL: Short to Ground
Continuous memory and on-demand DTC that is set when the BCM detects a short to ground on the right DRL voltage supply circuit.
BCM B124A: 15
Right DRL: Short to Battery or Open
Continuous memory and on-demand DTC that is set when the BCM detects an open or a short to voltage on the right DRL voltage supply circuit.
BCM B124B: 11
Left DRL: Short to Ground
Continuous memory and on-demand DTC that is set when the BCM detects a short to ground on the LH DRL voltage supply circuit.
BCM B124B: 15
Left DRL: Short to Battery or Open
Continuous memory and on-demand DTC that is set when the BCM detects an open or a short to voltage on the left DRL voltage supply circuit.
Possible Sources
Wiring, Terminals or Connectors
Headlamp Assembly
LED Control Module
BCM
A1 CHECK PARK LAMP OPERATION
The ignition is on.
For low series headlamps, place the headlamp switch in the HEADLAMPS position and observe the low beam headlamps.
For mid and high series headlamps, place the headlamp switch in the PARK LAMPS position and observe the DRL / front park lamp LEDs.
Do the lamps operate correctly?
Yes
For low series headlamps, if one DRL does not operate, GO to A9. For mid and high series headlamps, if one DRL does not operate, GO to A4. For low series headlamps, if both DRLs do not operate or are always on, GO to A3. For mid and high series headlamps, if both DRLs do not operate, GO to A3. For mid and high series headlamps: if one or both DRLs are always on, GO to A2.
No
For low series headlamps, REFER TO: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing). For medium and high series headlamps, REFER TO: Parking, Tail and License Plate Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
A2 CHECK THE BCM (BODY CONTROL MODULE) DRL (DAYTIME RUNNING LAMP) CIRCUIT FOR A SHORT TO VOLTAGE
Ignition OFF.
Disconnect the C2280F connector.
The ignition is on.
Do the DRLs remain on?
Yes
REPAIR the faulty DRL circuit.
No
GO to A6
A3 CHECK THAT THE DRL (DAYTIME RUNNING LAMP) IS ENABLED
For standard DRLs, check whether the DRLs are enabled using the diagnostic scan tool.
For configurable DRL, check whether the DRL is enabled using the IPC.
Is the DRL enabled?
Yes
For low series headlamps, GO to A9. For medium and high series headlamps, GO to A4.
No
For standard DRLs. Using the diagnostic scan tool, ENABLE the DRLs. For configurable DRL, enable the DRL. REFER TO the owner's literature for information on enabling the DRLs.
A4 CHECK THE DRL (DAYTIME RUNNING LAMP) CIRCUIT FOR VOLTAGE
Turn the headlamp switch to the OFF position.
Ignition OFF.
Disconnect for medium series halogen headlamps, left headlamp C1021 or right headlamp C1041.
Disconnect for High Series LED headlamps, left headlamp C1284 or right headlamp C1285.
The ignition is on.
Make sure the ambient light is sufficient so the automatic headlamp system does not turn the headlamps on automatically.
Turn the headlamp switch to AUTO LAMPS.
For medium series halogen headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1021-5
Ground
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1041-5
Ground
For High Series LED headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1284-5
Ground
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1285-5
Ground
Is the voltage greater than 11 volts?
Yes
GO to A6
No
GO to A5
A5 REPEAT ON-DEMAND SELF-TEST AND CHECK THE DRL (DAYTIME RUNNING LAMP) CIRCUIT FOR 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.
Turn the headlamp switch to AUTO LAMPS.
For medium series halogen headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1021-5
Ground
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1041-5
Ground
For High Series LED headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1284-5
Ground
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1285-5
Ground
Is the voltage greater than 11 volts?
Yes
For medium series halogen headlamps, INSTALL a new headlamp assembly. REFER TO: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation). For High Series LED headlamps, GO to A6.
No
GO to A7
A6 CHECK THE LED (LIGHT EMITTING DIODE) CONTROL MODULE
Turn the headlamp switch to the OFF position.
Ignition OFF.
Reconnect the left headlamp C1284 or right headlamp C1285, if previously disconnected.
Reconnect C2280F, if previously disconnected.
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.
Activate the hazard warning lamp function.
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.
A7 CHECK THE DRL (DAYTIME RUNNING LAMP) CIRCUIT FOR A SHORT TO GROUND
Turn the headlamp switch to the OFF position.
Ignition OFF.
Disconnect the C2280E connector.
For medium series halogen headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1021-5
Ground
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1041-5
Ground
For High Series LED headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1284-5
Ground
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1285-5
Ground
Is the resistance greater than 10000 Ohms?
Yes
GO to A8
No
REPAIR the circuit. After the repair: If no diagnostic trouble codes (DTCs) are present, CHECK the system for normal operation. If DTC U1000:00 is present, CLEAR the diagnostic trouble codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present). If DTC U3000:49 is present, INSTALL a new BCM. REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
A8 CHECK THE DRL (DAYTIME RUNNING LAMP) CIRCUIT FOR AN OPEN
For medium series halogen headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1021-5
C2280E-8
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1041-5
C2280E-9
For High Series LED headlamps, measure: Click to display connectors
LH headlamp
Positive lead
Measurement/Action
Negative lead
C1284-5
C2280E-8
Click to display the connectors
Right headlamp
Positive lead
Measurement/Action
Negative lead
C1285-5
C2280E-9
Is the resistance less than 3 ohms?
Yes
GO to A9
No
REPAIR the circuit.
A9 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.
?
Test yourself
A quick Ford Escape quiz: every answer comes with an explanation and a link to the manual page.
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DIAGNOSTIC TEST A: DRL DO NOT OPERATE OR ARE ALWAYS ON .jpg)
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