Test Description
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- 6: This step tests the integrity of both the mirror control circuits and the power mirror switch. If both power mirrors are inoperative on 1 or more axis, begin testing by disconnecting one of the power mirrors, if an open circuit is detected and repaired for that power mirror, repeat step 6 for the other power mirror.
- 7: This step tests the integrity of the battery positive voltage circuit not the fuse.
Power Mirrors Inoperative (Except Escalade)
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Outside Mirror Schematics | |||
| 1 | Did you review the Outside Mirror Description and Operation? | Go to Step 2 | Go to Symptoms - Doors |
| 2 |
|
Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS | Go to Step 3 |
| 3 | Are both the left and right power mirrors completely inoperative? | Go to Step 4 | Go to Step 6 |
| 4 |
|
Go to Step 5 | Go to Step 7 |
| 5 | Connect a test lamp between the battery positive voltage circuit of the power mirror switch harness connector and the ground circuit of the power mirror switch harness connector. Does the test lamp illuminate? |
Go to Step 9 | Go to Step 15 |
| 6 |
|
Go to Step 12 | Go to Step 8 |
| 7 | Test the battery positive voltage circuit of the power mirror switch for a short to ground or an open. Refer to CIRCUIT TESTING
and WIRING REPAIRS
. Did you find and correct the condition? |
Go to Step 18 | Go to Step 9 |
| 8 | Test the mirror motor control circuits for an open. Refer to CIRCUIT TESTING
and WIRING REPAIRS
. Did you find and correct the condition? |
Go to Step 18 | Go to Step 9 |
| 9 |
|
Go to Step 13 | Go to Step 10 |
| 10 | Probe each of the power mirror motor control circuits of the power mirror switch harness connector with a test lamp that is connected to a good ground. Did the test lamp illuminate at any of the power mirror motor control circuits? |
Go to Step 14 | Go to Step 11 |
| 11 | Inspect for poor connections at the harness connector of the power mirror switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
and CONNECTOR REPAIRS
. Did you find and correct the condition? |
Go to Step 18 | Go to Step 16 |
| 12 | Inspect for poor connections at the harness connector of the power mirror(s). Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
and CONNECTOR REPAIRS
. Did you find and correct the condition? |
Go to Step 18 | Go to Step 17 |
| 13 | Repair the short to ground in the power mirror motor control circuit(s). Refer to WIRING REPAIRS
. Did you complete the repair? |
Go to Step 18 | - |
| 14 | Repair the short to battery positive voltage in the power mirror motor control circuit(s). Refer to WIRING REPAIRS
. Did you complete the repair? |
Go to Step 18 | - |
| 15 | Repair the open in the power mirror switch ground circuit. Refer to WIRING REPAIRS
. Did you complete the repair? |
Go to Step 18 | - |
| 16 | Replace the power mirror switch. Refer to Power Mirror Switch Replacement . Did you complete the replacement? |
Go to Step 18 | - |
| 17 | Replace the power mirror(s). Refer to Mirror Replacement (Power Mirror) or Mirror Replacement (Manual) . Did you complete the replacement? |
Go to Step 18 | - |
| 18 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |