Memory/Heated Seat Switch Backlighting Inoperative
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Memory/Heated Seat Switch Backlighting Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Interior Lights Dimming Schematics | |||
| 1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems |
| 2 | Verify that the memory/heated switch backlighting is inoperative. Does the memory/heated switch backlighting operate normally? |
Go to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS in Wiring Systems | Go to Step 3 |
| 3 | Are any other dimmable interior backlighting lamps inoperative? | Go to Interior Backlighting Inoperative | Go to Step 4 |
| 4 |
|
Go to Step 10 | Go to Step 5 |
| 5 | Use a test lamp connected to B+ to backprobe the memory/heated seat switch illumination control circuit terminal at the driver door module (DDM) connector. Does the test lamp illuminate? |
Go to Step 7 | Go to Step 6 |
| 6 | Inspect for poor connections at the harness connector of the DDM. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. 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 memory/heated seat switch. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 9 |
| 8 |
IMPORTANT:
Perform the setup procedure for the driver door module (DDM). Replace the DDM. Refer to SWITCH REPLACEMENT - DOOR LOCK AND SIDE WINDOW - DRIVER
in Doors.Did you complete the replacement? |
Go to Step 10 | - |
| 9 | Replace the memory/heated seat switch. Refer to MEMORY SEAT SWITCH REPLACEMENT
in Seats. 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 |