Pinpoint Test Q: The Parking, Rear Or License Plate Lamps Are On Continuously

Parking, Rear and License Plate Lamps

Pinpoint Test Q: The Parking, Rear Or License Plate Lamps Are On Continuously

Refer to Wiring Diagram Set 92, Parking, Rear and License Lamps for schematic and connector information Electrical Diagrams.

Normal Operation

When the headlamp switch is placed in the PARKING LAMPS ON position, the BCM (Body Control Module) provides voltage on 5 separate circuits to the front and rear parking and license plate lamps.

If a fault exists with the headlamp switch input, the BCM (Body Control Module) faults the parking lamps and low beam headlamps on.





This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- BCM (Body Control Module)

PINPOINT TEST Q : THE PARKING, REAR OR LICENSE PLATE LAMPS ARE ON CONTINUOUSLY

Q1 USE THE RECORDED DTCs FROM THE BCM (Body Control Module) SELF-TEST

- Check the recorded results from the BCM (Body Control Module) self-test.

Was DTC B10A6:92 recorded?

Yes
GO to Pinpoint Test C Pinpoint Test C: The Low Beams Are Always On.

No
GO to Q2.

Q2 CHECK THE BCM (Body Control Module) PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

- Ignition OFF.

- Disconnect: BCM (Body Control Module) C2280C (Front Side Marker and Auxiliary Lamps).

- Disconnect: BCM (Body Control Module) C2280D (Front Parking Lamps).

- Disconnect: BCM (Body Control Module) C2280G (Rear Parking Lamps).

- Ignition ON.

Does the parking lamp(s) in question continue to illuminate?

Yes
REPAIR the parking lamp voltage supply circuit in question for a short to voltage. CLEAR the DTCs. TEST the system for normal operation.

No
GO to Q3.

Q3 CHECK FOR CORRECT BCM (Body Control Module) OPERATION

- Ignition OFF.

- Disconnect all the BCM (Body Control Module) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the BCM (Body Control Module) connectors and make sure they seat correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new BCM (Body Control Module). TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.