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Home >> Cadillac >> 2021 >> XT5 Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 823 (Transfer Case - Mp 3023/3024 (NQH) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC C1167 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. S126 Drive Mode Select Switch - 4WD/AWD Automatic

    or

    S126 Drive Mode Select Switch - Transfer Case in Neutral

  3. Transmission in Drive
    4. NOTE:

    Within 2 min

  4. Perform the scan tool control function: Range Actuator Lock - Locked/Unlocked

    Verify the scan tool parameter:

    • Range Actuator Brake Control Circuit High Side Voltage = 4.5 to 7.3 V - Range Actuator Lock - Locked
    • Range Actuator Brake Control Circuit Low Side Voltage = 4.5 to 7.3 V - Range Actuator Lock - Locked
    • Range Actuator Brake Control Circuit High Side Voltage = 6 to 16 V - Range Actuator Lock - Unlocked
    • Range Actuator Brake Control Circuit Low Side Voltage = 0 to 0.5 V - Range Actuator Lock - Unlocked
    • If not the specified value 

      Refer to: DTC C1162 

    • Go to next step: If the specified value 
  5. Test or replace the component: A16 Transfer Case Motor
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