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Home › Buick › 2008 › Allure CX › Repair and Diagnosis › Steering › Power Steering System › Diagnostic Information and Procedures › DTC C0450 › Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the VES actuator.
  2. Measure for 0 volts between the actuator control circuit terminal B and ground.
    • If over the specified range, test the actuator control circuit terminal B for short to voltage. If the circuit tests normal, replace the EBCM.
  3. Ignition ON, measure for 12 volts between the actuator control circuit and ground.
    • If under the specified range, test the actuator control circuit for short to ground or open/high resistance. If the circuit tests normal, replace the VES actuator.
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