Inspection and Verification

Verify the customer concern.

Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical	Electrical
Steering wheel	BCM fuse 36 (10A) Wiring, terminals or connectors HSWM Steering wheel Clockspring

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the DLC.
NOTE: The VCM LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM :
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to Module Communications Network , No Power To The Scan Tool, to diagnose no power to the scan tool.
If the scan tool does not communicate with the vehicle:
- verify the ignition is ON.
  - The air bag warning indicator prove-out (other indicators may NOT prove ignition is ON) confirms ignition ON. If ignition does not turn ON, refer to Steering Column Switches to diagnose no power in RUN.
- verify the scan tool operation with a known good vehicle.
- refer to Module Communications Network to diagnose no response from the PCM.
Carry out the network test.
- If the scan tool responds with no communication from one or more modules, refer to Module Communications Network .
- If the network test passes, retrieve and record the CMDTCs.
Clear the CMDTCs and carry out the self-test diagnostics from the HSWM.
If the HSWM DTCs retrieved are related to the concern, go to Heated Steering Wheel Module (HSWM) DTC Chart . For all other DTCs, refer to Multifunction Electronic Modules .
If no DTCs related to the concern are retrieved, GO to Symptom Chart .