Schematic Reference: Interior Lights Schematics

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 dome lamps are always on.

Does the system operate normally?

Go to Testing for Electrical Intermittents

Go to Step 3

1. Disconnect them multifunction alarm module.
2. Disconnect C2 of the left instrument panel junction block.

Did the dome lamps turn off?

Go to Step 4

Go to Step 7

1. Disconnect C11 of the instrument panel fuse block.
2. Test for a short to ground at C2 cavities 9 and 10 of the left instrument panel junction block. Refer to Circuit Testing and Wiring Repairs .

Did you find and repair the short to ground?

Go to Step 10

Go to Step 5

1. Disconnect C5 of the instrument panel fuse block.
2. Test for a short to ground at cavities 14, 15 and 16. Refer to Circuit Testing and Wiring Repairs .

Did you find and repair the short to ground?

Go to Step 10

Go to Step 6

Replace the instrument panel harness. Refer to Instrument Panel Wiring Harness Replacement .

Did you complete the replacement?

Go to Step 10

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1. Disconnect the instrument panel lamp dimmer.
2. Test for a short to ground at cavity 1 of the I/P lamp dimmer harness. Refer to Circuit Testing and Wiring Repairs .

Did you find and complete the repair?

Go to Step 10

Go to Step 8

1. Disconnect C7 of the instrument panel fuse block.
2. Test for a short to ground at cavity 3 of C7. Refer to Circuit Testing and Wiring Repairs .

Did you find and complete the repair?

Go to Step 10

Go to Step 9

1. Disconnect C3 of the instrument panel fuse block.
2. Test for a short to ground at cavity 6 of C3. Refer to Circuit Testing and Wiring Repairs .

Did you find and complete the repair?

Go to Step 10

Go to Step 6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3