Step  | Action  | Yes  | No  | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Interior Lights Dimming Schematics Connector End View Reference: Master Electrical Component List  | |||||||||
1  | Did you perform the Diagnostic System Check - Vehicle?  | Go to Step 2  | |||||||
2  | Verify that the interior backlighting is inoperative. Does the interior backlighting operate normally?  | Go to Testing for Intermittent Conditions and Poor Connections  | Go to Step 3  | ||||||
3  | Do the park lamps operate correctly?  | Go to Step 4  | |||||||
4  | Are all of the interior backlighting lamps inoperative?  | Go to Step 7  | Go to Step 5  | ||||||
5  | Test for an open or high resistance in the following circuits of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs . 
 
 
 Did you find and correct a condition?  | Go to Step 10  | Go to Step 6  | ||||||
6  | Connect a test lamp between the supply voltage circuit and ground circuit of the inoperative lamp. Refer to Wiring Repairs . Does the test lamp illuminate?  | Go to Step 8  | Go to Step 7  | ||||||
7  | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?  | Go to Step 10  | Go to Step 9  | ||||||
8  | Replace the affected lamp or internal lamp component. Did you complete the replacement?  | Go to Step 10  | --  | ||||||
9  | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?  | Go to Step 10  | --  | ||||||
10  | Operate the system in order to verify the repair. Did you correct the condition?  | System OK  | Go to Step 3  | ||||||