Courtesy Lamps Always On
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.
Courtesy Lamps Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Interior Lights 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 courtesy/dome lamps are always on. Do the courtesy/dome lamps operate normally? |
Go to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS in Wiring Systems | Go to Step 3 |
| 3 | Inspect for the following related body control module (BCM), driver door module (DDM), passenger door module (PDM), and lift gate module (LGM) data parameters. Refer to Scan Tool Data List and Scan Tool Data Definitions for typical values and definitions:
Was a problem found? |
Go to Step 4 | Go to Step 8 |
| 4 | Disconnect and test the switch of the affected input circuit for proper continuity in the open and closed positions. Refer to CIRCUIT TESTING
in Wiring Systems. Is continuity present? |
Go to Step 5 | Go to Step 6 |
| 5 | Test the signal and ground circuits of the affected input circuit for a short to ground, open or high resistance. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
Go to Step 12 | Go to Step 7 |
| 6 | Inspect for poor connections at the harness connector of the affected switch. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
Go to Step 12 | Go to Step 9 |
| 7 | Inspect for poor connections at the harness connector of the module in the affected circuit. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
Go to Step 12 | Go to Step 10 |
| 8 | Inspect for poor connections at the harness connector of the BCM. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
Go to Step 12 | Go to Step 11 |
| 9 | Replace the switch in the affected circuit. Refer to one of the following replacement procedures as applicable:
Did you complete the replacement? |
Go to Step 12 | - |
| 10 |
IMPORTANT:
Perform the setup procedure for the replacement module as applicable. Replace the module in the affected circuit. Refer to the appropriate replacement procedure:Did you complete the replacement? |
Go to Step 12 | - |
| 11 |
IMPORTANT:
Perform the setup procedure for the BCM. Replace the body control module (BCM). Refer to BODY CONTROL MODULE REPLACEMENT
in Body Control System.Did you complete the replacement? |
Go to Step 12 | - |
| 12 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |