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Home › Pontiac › 2008 › Grand Prix Base › Repair and Diagnosis › Steering › Power Steering System › Diagnostic Information and Procedures › DTC C0450 › Circuit/System Testing

Circuit/System Testing

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