Steering Wheel Controls 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.
Steering Wheel Controls Inoperative
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The left steering wheel control does not operate properly. |
||||
| 1 | Did you perform the HVAC Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - HVAC Systems - Automatic |
| 2 |
|
- | Go to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS in Wiring Systems | Go to Step 3 |
| 3 |
CAUTION:
When you are performing service on or near the SIR components or the SIR wiring, you must disable the SIR system. Refer to DISABLING & ACTIVATING AIR BAG SYSTEM
. Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.
|
- | Go to Step 4 | Go to Step 5 |
| 4 |
|
- | Go to Step 10 | Go to Step 9 |
| 5 | Measure the voltage from the supply voltage circuit of the left steering wheel controls to a good ground. Does the voltage measure greater than the specified value? |
10 V | Go to Step 9 | Go to Step 6 |
| 6 | Measure the voltage from the supply voltage circuit of the right steering wheel controls to a good ground. Does the voltage measure greater than the specified value? |
10 V | Go to Step 7 | Go to Step 8 |
| 7 | Test the supply voltage circuit of the left steering wheel controls for a short to ground, a high resistance or an open. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 16 | Go to Step 11 |
| 8 | Test the supply voltage circuit of the right steering wheel controls for a short to ground, a high resistance or an open. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 16 | Go to Step 12 |
| 9 | Test the signal circuit of the left steering wheel controls for a short to ground, a high resistance or an open. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 16 | Go to Step 12 |
| 10 | Inspect for poor connections at the harness connector of the left steering wheel controls. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS
and CONNECTOR REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 16 | Go to Step 13 |
| 11 | Inspect for poor connections at the harness connector of the right steering wheel controls. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS
and CONNECTOR REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 16 | Go to Step 14 |
| 12 | Inspect for poor connections at the harness connector of the body control module. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS
and CONNECTOR REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 16 | Go to Step 15 |
| 13 | Replace the left steering wheel control switch. Refer to STEERING WHEEL CONTROL SWITCH ASSEMBLY
in Steering Wheel and Column. Did you complete the replacement? |
- | Go to Step 16 | - |
| 14 | Replace the right steering wheel control switch. Refer to STEERING WHEEL CONTROL SWITCH ASSEMBLY
in Steering Wheel and Column. Did you complete the replacement? |
- | Go to Step 16 | - |
| 15 |
IMPORTANT:
Perform the set up procedure for the body control module. Replace the body control module. Refer to BODY CONTROL MODULE REPLACEMENT
.Did you complete the replacement? |
- | Go to Step 16 | - |
| 16 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 3 |