Steering Column Switches

Steering Column Switches

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart






3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. NOTE: Make sure to use the latest scan tool software release.
If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).


5. NOTE: The Vehicle Communication Module (VCM) LED prove out confirms power and ground from the DLC (Data Link Connector) are provided to the VCM (Vehicle Communication Module).
If the scan tool does not communicate with the VCM (Vehicle Communication Module) :

- check the VCM (Vehicle Communication Module) connection to the vehicle.

- check the scan tool connection to the VCM (Vehicle Communication Module).

- refer to No Power To The Scan Tool, to diagnose no power to the VCM (Vehicle Communication Module).


6. If the scan tool does not communicate with the vehicle:
- verify the ignition is in RUN (ON).
- The air bag warning indicator prove-out (other indicators may NOT prove ignition is in RUN) confirms ignition in RUN. If ignition does not enter RUN, GO to Symptom Chart Steering Column Switches.

- refer to Inspection and Verification to establish a scan tool session.

- verify the scan tool operation with a known good vehicle.


7. Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Information Bus.

- If the network test passes, retrieve and record Continuous Memory Diagnostic Trouble Codes (CMDTCs).


8. Carry out the self-test diagnostics for the BCM (Body Control Module).

9. Carry out the self-test diagnostics for the Steering Column Control Module (SCCM).

10. If equipped with a start/stop switch, turn the ignition OFF. The ignition must be OFF to carry out a RFA (Remote Function Actuator) module self-test.

11. If equipped with a start/stop switch, carry out the self-test diagnostics for the RFA (Remote Function Actuator) module.

12. If the DTCs retrieved are related to the concern, refer to the BCM (Body Control Module) Module DTC Chart, the Remote Function Actuator (RFA) Module DTC Chart and/or the Steering Column Control Module (SCCM) DTC Chart Steering Column Switches. If no DTCs related to the concern are retrieved, GO to Symptom Chart Steering Column Switches.