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. Diagrams By Number

Normal Operation

The Battery Junction Box (BJB) fuse 22 (15A) provides voltage to the Body Control Module (BCM) for the parking lamps. When the headlamp switch is placed in the PARKING LAMPS ON position, the BCM 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 faults the parking lamps and low beam headlamps on.





This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- BCM

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

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Q1 USE THE RECORDED DTCs FROM THE BCM SELF-TEST

- Check the recorded results from the BCM 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.

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Q2 CHECK THE BCM PARKING LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

- Ignition OFF.
- Disconnect: BCM C2280C (Front Side Marker and Auxiliary Lamps).
- Disconnect: BCM C2280D (Front Parking Lamps).
- Disconnect: BCM 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.

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Q3 CHECK FOR CORRECT BCM OPERATION

- Ignition OFF.
- Disconnect all the BCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the BCM 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. REFER to Multifunction Electronic Modules Body Control Module (BCM). 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.

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