Pinpoint Test E: The Demand Lighting Is Inoperative

Interior Lighting

Pinpoint Tests

Pinpoint Test E: The Demand Lighting Is Inoperative

Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. Diagrams By Number

Normal Operation

The Lighting Control Module (LCM) provides power to the demand lamps. The demand lamps remain powered for a predetermined amount of time. Once the battery saver timeout has been reached, the LCM removes voltage from the demand lamps.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- LCM

PINPOINT TEST E: THE DEMAND LIGHTING IS INOPERATIVE

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E1 CHECK THE COURTESY LAMP OPERATION


- Ignition OFF.
- Open the driver door.
- Do the courtesy lamps illuminate?

Yes
GO to E2.

No
GO to Pinpoint Test A. Pinpoint Test A: The Courtesy Lamps Are Inoperative

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E2 CHECK THE DEMAND LIGHTING INPUT CIRCUIT FOR AN OPEN


- NOTE: If the fuse fails, repair circuit 705 (LG/OG) for a short to ground.

- Connect a fused jumper wire between the LCM C2145c-4, circuit 54 (LG/YE), harness side and the LCM C2145c-18, circuit 705 (LG/OG), harness side.




- Turn any demand lamp on.
- Does the demand lamp illuminate?

Yes
REMOVE the jumper wire. GO to E3.

No
REMOVE the jumper wire. REPAIR circuit 705 (LG/OG) for an open. TEST the system for normal operation.

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E3 CHECK FOR CORRECT LCM OPERATION


- Disconnect all the LCM connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the LCM 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 LCM. REFER to Multifunction Electronic Modules Service and Repair. 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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