Schematic Reference: Interior Lights Schematics

Connector End View Reference: Component Connector End Views

Did you review the Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

Verify that the Courtesy lamps are inoperative.

Does the system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Using a test lamp, check the dome lamp cavity 2 to ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 4

Using a test lamp, backprobe the junction block 1, C1 cavity 3 to ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 6

Replace the dome lamp. Refer to Dome Lamp Replacement .

Did you complete the replacement?

Go to Step 13

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Connect a test lamp from cavity 1 of the dome lamp to ground.

When the door is open does the dome lamp illuminate?

Go to Step 7

Go to Step 9

Repair the open in the dome lamp ground circuit between the dome lamp and the multifunction alarm module. Refer to Wiring Repairs .

Did you find and correct the condition?

Go to Step 13

Go to Step 10

Repair the open in the dome lamp feed circuit between the dome lamp cavity 2 and the junction block 1, C1. Refer to Wiring Repairs .

Did you complete the repair?

Go to Step 13

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Replace the junction block 1.

Did you complete the repair?

Go to Step 13

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Using a fused jumper wire, connect the junction block 2 C4 cavity 7 to ground.

Does the dome lamp illuminate?

Go to Step 11

Go to Step 12

Replace the body control module (BCM). Refer to Control Module References .

Is the replacement complete?

Go to Step 13

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Repair the open in the dome lamp ground circuit and/or replace the door jamb switch, as needed. Refer to Wiring Repairs .

Is the repair/replacement complete?

Go to Step 13

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3