Diagnostic Routine U

Diagnostic Routine U

Diagnostic Overview

The Parking, Rear, Or License Plate Lamps Are On Continuously

Refer to Wiring Diagram Set 92 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Parking Lamps .

Pinpoint Test

1. CHECK IF THE HEADLAMPS ARE ON

1. Ignition ON.

2. Observe the headlamps.

Are the headlamps illuminated?








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

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280D.

3. Ignition ON.

Do the rear parking lamps continue to illuminate?








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

1. Ignition OFF.

2. Disconnect: BCM (Body Control Module) C2280E.

3. Ignition ON.

Do the front parking lamps continue to illuminate?








4. CHECK FOR CORRECT BCM (Body Control Module) OPERATION

1. Disconnect and inspect all BCM (Body Control Module) connectors.

2. 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

3. Reconnect the BCM (Body Control Module) connectors. Make sure they seat and latch correctly.

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

Is the concern still present?