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Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
  3. Visually inspect for obstructions preventing column movement.

    Visual Inspection Chart 

    Mechanical Electrical
    Steering column control switch
    Steering column assembly    		 Wiring, terminals or connectors
    SCCM
    Adjustable steering column tilt motor
    Adjustable steering column telescope motor (part of the steering column assembly)
  4. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  5. 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.

  6. 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.
  7. 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 , The PCM Does Not Respond To The Scan Tool, to diagnose no response from the PCM.
  8. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to Module Communications Network .
    • If the network test passes, retrieve and record CMDTCs.
  9. Clear the continuous DTCs and carry out the self test diagnostics for the SCCM.
  10. If the DTCs retrieved are related to the concern, go to Steering Column Control Module (SCCM) DTC Chart . For all other SCCM DTCs, refer to the Steering Column Control Module (SCCM) DTC Chart in Steering Column Switches .
  11. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
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