Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Interior Lights Dimming Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication Connector End Views | |||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||
2 | Verify that the interior backlighting does not dim. Does the interior backlighting operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | ||||||
3 | Use the scan tool output controls to operate the interior backlighting. Can you control the dimming level of an activated control switch indicator with the scan tool? | Go to Step 4 | Go to Step 5 | ||||||
4 | Test for an open, high resistance or short to ground in the following circuits. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct a condition? | Go to Step 10 | Go to Step 6 | ||||||
5 | Test for a short to voltage in the LED dimming circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct a condition? | Go to Step 10 | Go to Step 7 | ||||||
6 | Inspect for poor connections at the harness connector of the headlamp switch. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 10 | Go to Step 8 | ||||||
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 headlamp switch. Refer to Headlamp Switch Replacement . 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 | ||||||
