Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics DEFINITION: The steering wheel temperature switch will not adjust HVAC temperatures and no DTC's have been set. | ||||
1 | Did you perform the HVAC Diagnostic System Check? | -- | Go to Step 2 | |
2 |
| -- | Go to Step 3 | |
3 |
Do the counts change for any switch pressed? | -- | Go to Step 4 | Go to Step 6 |
4 |
Do the counts change for all switches pressed? | -- | Go to Step 5 | Go to Step 10 |
5 |
Do the radio steering wheel controls function? | -- | Go to Too Hot in Vehicle or Too Cold in Vehicle | Go to Step 11 |
6 |
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 the SIR System. Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.
Do the counts change? | -- | Go to Step 10 | Go to Step 7 |
7 | Measure the voltage from the remote radio control supply voltage circuit at the right steering wheel controls to a good ground. Does the voltage measure near the specified value? | 12 V | Go to Step 8 | Go to Step 9 |
8 | Test the steering wheel control signal circuit of the right steering wheel controls for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 11 |
9 | Test the remote radio control supply voltage circuit of the right steering wheel controls for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 14 | Go to Step 11 |
10 | 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 14 | Go to Step 12 |
11 | Inspect for poor connections at the harness connector of the dash integration module (DIM). 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 14 | Go to Step 13 |
12 | Replace the right steering wheel controls. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column. Did you complete the replacement? | -- | Go to Step 14 | -- |
13 |
Important: Perform the Recalibration procedure for the DIM. Replace the DIM. Refer to Dash Integration Module Replacement in Body Control System. Did you complete the replacement? | -- | Go to Step 14 | -- |
14 | Enable the SIR system. Refer to Enabling the SIR System in SIR. Is the SIR system enabled? | -- | Go to Step 15 | -- |
15 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
