Step | Action | Values | 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 Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the scan tool indicate that the value of the SWC Switch Voltage parameter changes when each switch is activated? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Caution: Refer to SIR Caution in the Preface section. Does the scan tool indicate that the value of the SWC Switch Voltage parameter changes? | -- | Go to Step 4 | Go to Step 5 |
4 |
Does the scan tool indicate that the value of the SWC Switch Voltage parameter changes? | -- | 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 to 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 to 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 to 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 to 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 to 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 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 16 | Go to Step 15 |
13 | Replace the left steering wheel control switch. Refer to Steering Wheel Control Switch Assembly Replacement 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 Replacement in Steering Wheel and Column. Did you complete the replacement? | -- | Go to Step 16 | -- |
15 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. 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 |
