Memory/Heated Seat Switch Backlighting Inoperative
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Memory/Heated Seat Switch Backlighting Inoperative Diagnostic Test
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Interior Lights Dimming Schematics Connector End View Reference: Lighting Systems Connector End Views , Body Control System Connector End Views in Body Control System, or Power Door Systems Connector End Views in Doors |
|||
| 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 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 |