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 |
Do the entertainment steering wheel controls function? | -- | Go to Step 3 | Go to Symptoms - Entertainment in Entertainment |
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 the SIR System. Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.
Does the voltage change for each switch pressed? | -- | Go to Step 4 | Go to Step 17 |
4 | Is the vehicle equipped with a remote playback device-CD changer? | -- | Go to Step 5 | Go to Step 6 |
5 |
Do the CD changer controls function? | -- | Go to Step 10 | Go to Symptoms - Entertainment in Entertainment |
6 |
Is the voltage greater than the specified value? | 3 V | Go to Step 7 | Go to Step 9 |
7 |
Is the voltage greater than the specified value? | 3 V | Go to Step 8 | Go to Step 13 |
8 |
Is the voltage greater than the specified value? | 3 V | Go to Step 11 | Go to Step 14 |
9 |
Is the voltage greater than the specified value? | 3 V | Go to Step 16 | Go to Step 12 |
10 | Test the entertainment and comfort serial data circuit for an open between the radio and the instrument panel integration module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 11 |
11 | Test the entertainment and comfort serial data circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 12 |
12 | Test the entertainment and comfort serial data circuit for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 15 |
13 | Test the entertainment and comfort serial data circuit for a short to ground or an open between the radio and the instrument panel integration module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 15 |
14 | Test the entertainment and comfort serial data circuit for a short to ground or an open between the radio and the instrument panel integration module (IPM). 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 20 | Go to Step 16 |
15 | Inspect for poor connections at the harness connector of the radio. 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 20 | Go to Step 18 |
16 | Inspect for poor connections at the harness connector IPM. 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 20 | Go to Step 19 |
17 | Replace the steering wheel control-right. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column. Did you complete the replacement? | -- | Go to Step 20 | -- |
18 | Replace the radio. Refer to Radio Replacement in Entertainment. Did you complete the replacement? | -- | Go to Step 20 | -- |
19 |
Important:: Perform the recalibration procedure for the IPM. Replace the IPM. Refer to Instrument Panel Module Replacement in Body Control System. Did you complete the replacement? | -- | Go to Step 20 | -- |
20 | Enable the SIR system. Refer to Enabling the SIR System in SIR. Is the SIR system enabled? | -- | Go to Step 21 | -- |
21 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
