Pinpoint Test F: An Individual Demand Lamp Is Inoperative

Interior Lighting

Pinpoint Test F: An Individual Demand Lamp 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 through circuit 705 (LG/OG). The demand lamps are grounded through circuit 57 (BK). The demand lamps will remain powered for a predetermined amount of time. Once that timeout has been reached, the LCM removes voltage from circuit 705 (LG/OG).

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Interior lamp



PINPOINT TEST F: AN INDIVIDUAL DEMAND LAMP IS INOPERATIVE

NOTE: The battery saver must be activated during this test.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

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F1 VERIFY THE INTERIOR LAMP OPERATION


- Open the LH front door.
- Verify all courtesy lamps illuminate.
- Do the courtesy lamps illuminate?

Yes
GO to F2.

No
Go To Pinpoint Test A. Pinpoint Test A: The Courtesy Lamps Are Inoperative

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F2 CHECK CIRCUIT 705 (LG/OG) FOR AN OPEN


- Ignition OFF.
- Disconnect: Inoperative Demand Lamp.
- Ignition ON.
- Measure the voltage between the inoperative demand lamp connector, harness side and ground as follows:





- Is the voltage greater than 10 volts at the inoperative demand lamp?

Yes
GO to F3.

No
REPAIR the circuit in question. TEST the system for normal operation.

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F3 CHECK CIRCUIT 57 (BK) FOR AN OPEN


- Disconnect: Negative Battery Cable.
- Measure the resistance between the inoperative demand lamp connector, harness side and ground as follows:





- Is the resistance less than 5 ohms at the inoperative demand lamp?

Yes
INSTALL a new lamp assembly. TEST the system for normal operation.

No
REPAIR the circuit in question. TEST the system for normal operation.

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