Refer to Wiring Diagrams Cell 85 for schematic and connector information.
Normal Operation and Fault Conditions
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
DTC |
Description |
Fault Trigger Condition |
BCM B124A:11 |
Right Daytime Running Light: Circuit Short To Ground |
A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the RH
DRL voltage supply circuit.
|
BCM B124A:15 |
Right Daytime Running Light: Circuit Short To Battery Or Open |
A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the RH
DRL voltage supply circuit.
|
BCM B124B:11 |
Left Daytime Running Light: Circuit Short To Ground |
A continuous memory and on-demand DTC that sets when the BCM detects a short to ground from the LH
DRL voltage supply circuit.
|
BCM B124B:15 |
Left Daytime Running Light: Circuit Short To Battery Or Open |
A continuous memory and on-demand DTC that sets when the BCM detects an open or short to voltage from the LH
DRL voltage supply circuit.
|
Possible Sources
- Wiring, terminals or connectors
- Headlamp assembly
-
LED control module
-
BCM
NOTE:
Before beginning this test, refer to Description and Operation in this section for proper DRL operation.
|
A1 CHECK THE OPERATION OF THE PARKING LAMPS |
-
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 PARKING LAMPS position and observe the LED
DRL /front park lamps.
Do the lamps operate correctly?
Yes |
For low series headlamps, if one of the DRL are inoperative, GO to A9
For mid and high series headlamps, if the one of the DRL are inoperative, GO to A4
For low series headlamps, if both of the DRL are inoperative or always on, GO to A3
For mid and high series headlamps, if both of the DRL are inoperative, GO to A3
For mid and high series headlamps, If the one or both of the DRL are always on, GO to A2
|
No |
For low series headlamps, REFER to: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing).
For mid and high series headlamps, REFER to: Parking, Rear and License Plate Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
|
|
A2 CHECK THE BCM (BODY CONTROL MODULE)
DRL (DAYTIME RUNNING LAMPS)
CIRCUIT FOR A SHORT TO VOLTAGE |
Do the DRL continue to illuminate?
Yes |
REPAIR the DRL circuit in question.
|
|
A3 CHECK THAT THE DRL (DAYTIME RUNNING LAMPS)
ARE ENABLED |
-
For conventional DRL , check if the DRL are enabled through a diagnostic scan tool.
-
For configurable DRL , check if the DRL are enabled through the IPC .
Are the DRL enabled?
Yes |
For low series headlamps, GO to A9
For mid and high series headlamps, GO to A4
|
No |
For conventional DRL , Using a diagnostic scan tool, ENABLE the DRL .
For configurable DRL , enable the DRL . REFER to the Owner's Literature for information on enabling the DRL .
|
|
A4 CHECK THE DRL (DAYTIME RUNNING LAMPS)
CIRCUIT FOR VOLTAGE |
-
Place the headlamp switch in the OFF position.
-
Disconnect For mid series halogen headlamps, LH Headlamp C1021 or RH Headlamp C1041
.
-
Disconnect For high series LED headlamps, LH Headlamp C1284 or RH Headlamp C1285
.
-
Make sure there is enough ambient lighting that the
autolamps system will not automatically illuminate the headlamps.
-
Place the headlamp switch in the AUTOLAMPS position.
-
For mid series halogen headlamps, measure:
Click to display connectors
LH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1021-5
|
|
Ground
|
Click to display connectors
RH 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 connectors
RH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1285-5
|
|
Ground
|
Is the voltage greater than 11 volts?
|
A5 REPEAT THE ON-DEMAND SELF-TEST AND CHECK THE DRL (DAYTIME RUNNING LAMPS)
CIRCUIT FOR VOLTAGE |
-
Place the headlamp switch in the OFF position.
-
Using a diagnostic 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).
-
Place the headlamp switch in the AUTOLAMPS position.
-
For mid series halogen headlamps, measure:
Click to display connectors
LH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1021-5
|
|
Ground
|
Click to display connectors
RH 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 connectors
RH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1285-5
|
|
Ground
|
Is the voltage greater than 11 volts?
Yes |
For mid 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
|
|
A6 CHECK THE LED (LIGHT EMITTING DIODE)
CONTROL MODULE |
-
Place the headlamp switch in the OFF position.
-
Connect Inoperative LH Headlamp C1284 or RH Headlamp C1285 if previously disconnected.
-
Connect
BCM
C2280F if previously disconnected.
-
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 flasher lamp function.
-
Operate the system and determine if the concern is still present.
Is the concern still present or does any Diagnostic Trouble Codes (DTCs) return?
Yes |
REMOVE the known good LED control module. INSTALL a new headlamp assembly. REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation).
|
No |
REMOVE the known good LED control module. INSTALL a new LED control module.
|
|
A7 CHECK THE DRL (DAYTIME RUNNING LAMPS)
CIRCUIT FOR A SHORT TO GROUND |
-
Place the headlamp switch in the OFF position.
-
For mid series halogen headlamps, measure:
Click to display connectors
LH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1021-5
|
|
Ground
|
Click to display connectors
RH 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 connectors
RH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1285-5
|
|
Ground
|
Is the resistance greater than 10,000 ohms?
No |
REPAIR the circuit. After the repair:
If no Diagnostic Trouble Codes (DTCs) are present, TEST 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 LAMPS)
CIRCUIT FOR AN OPEN |
-
For mid series halogen headlamps, measure:
Click to display connectors
LH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1021-5
|
|
C2280E-8
|
Click to display connectors
RH 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 connectors
RH Headlamp
Positive Lead
|
Measurement / Action
|
Negative Lead
|
C1285-5
|
|
C2280E-9
|
Is the resistance less than 3 ohms?
|
A9 CHECK FOR CORRECT BCM (BODY CONTROL MODULE)
OPERATION |
-
Disconnect and inspect all BCM and all related in-line connectors.
-
Repair:
-
corrosion (install new connector or terminals – clean module pins)
-
damaged or bent pins – install new terminals/pins
-
pushed-out pins – install new pins as necessary
-
Reconnect the BCM and all related in-line connectors. Make sure they seat and latch correctly.
-
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 BCM . REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
|
No |
The system is operating correctly at this time. The
concern may have been caused by module connections. ADDRESS the root
cause of any connector or pin issues.
|
|