Steering Wheel Controls Inoperative Audio
Diagnostic Aids
| • | If the vehicle is equipped with RPO K59 and the adaptive cruise control GAP UP/DOWN switch is the only inoperative switch, refer to Cruise Control Gap Up/Down Switch Malfunction in Cruise Control for diagnosis. |
| • | If the vehicle is not equipped with RPO K59 and the MUTE/SEEK UP switch is the only inoperative switch, refer to Steering Wheel Controls Inoperative and select MUTE/SEEK UP Switch Inoperative. |
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference : Steering Wheel Controls Schematics Connector Reference : Entertainment Connector End Views | ||||
1 | Did you perform the Diagnostic System Check -- Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Operate all of the steering wheel controls. Do all of the steering wheel controls operate properly? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Test the steering wheel control supply voltage circuit for a short to ground or open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 4 |
4 |
Caution: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.
Are the measured resistances approximately equal to the specified values? | Preset Seek Down: 12.7K ohms Preset Seek Up: 13K ohms Volume Down: 13.35K ohms Volume Up: 13.8K ohms Voice Recognition: 14.5K ohms Source: 15.7K ohms | Go to Step 5 | Go to Step 7 |
5 | Test the steering wheel controls signal circuit for a short, 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 10 | Go to Step 6 |
6 | 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 10 | Go to Step 9 |
7 | Inspect for poor connections at the harness connector of the steering wheel radio 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 10 | Go to Step 8 |
8 | Replace the appropriate steering wheel radio control. Refer to Steering Wheel Control Switch Assembly Replacement . Did you complete the replacement? | -- | Go to Step 10 | -- |
9 | Replace the CD changer and perform the set up procedure for the radio if applicable. Refer to Remote CD Changer Replacement . Did you complete the replacement? | -- | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
Steering Wheel Controls Inoperative MUTE/SEEK UP Switch Inoperative
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference : Steering Wheel Controls Schematics Connector End View Reference: Entertainment Connector End Views or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems | ||||
1 | Did you perform the vehicle Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the ACC Gap Switch parameter indicate Up when SEEK UP is selected and Down when MUTE is selected? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the test light illuminate when the SEEK UP switch is pressed? | -- | Go to Step 6 | Go to Step 4 |
4 |
Caution: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.
Does the test light illuminate? | -- | Go to Step 5 | Go to Step 8 |
5 | Test the steering wheel controls 2 signal circuit for an open, short to ground or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 7 |
6 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 9 |
7 | Inspect for poor connections at the harness connector of the MUTE/SEEK UP switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 10 |
8 | Repair the open, the short to ground or the high resistance in the ignition 1 voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 11 | -- |
9 |
Important: Perform the set up procedure for the replacement BCM. Replace the BCM. Refer to Body Control Module Replacement in Computer/Integrating Systems. Did you complete the replacement? | -- | Go to Step 11 | -- |
10 | Replace the steering wheel control switch assembly. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column. Did you complete the replacement? | -- | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
