Steering Wheel Controls Inoperative

2006 Isuzu Ascender S, 5.3 M, 4WDSECTION Steering Wheel Controls Inoperative
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 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:  Radio/Audio System Schematics  
1 Did you perform the Radio/Audio System Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - Entertainment System 
2
  1. Turn ON the ignition, with the engine OFF.
  2. Turn ON the radio.
  3. 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 Do one or more of the steering wheel control switches operate properly? - Go to Step 8  Go to Step 4 
4
    CAUTION: Refer to SIR Caution in Cautions and Notices.
  1. Disconnect the steering wheel controls.
  2. Press and hold the steering wheel control Source Down switch.
  3. Measure the resistance between the 12-volt reference circuit and the remote radio control signal circuit.
Is the resistance near the specified range?
13.6 KΩ Go to Step 5  Go to Step 9 
5 Test the 12-volt reference circuit for a short to ground or an open. Refer toCircuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 11  Go to Step 6 
6 Test the remote radio control signal circuit for 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 11  Go to Step 7 
7 Inspect for poor connections at the harness connector of the body control module (BCM). 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 11  Go to Step 10 
8 Inspect for poor connections at the harness connector of the 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 11  Go to Step 9 
9 Replace the 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 11  -
10 Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
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 
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.