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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis >> Steering >> Power Steering System >> Diagnostic Information and Procedures >> DTC C0450: Steering Assist Control Solenoid Actuator Circuit >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the VES actuator.
  2. Ignition ON, Command the VES actuator to 100% with a scan tool.
  3. Test for B+ between the high control circuit terminal 2 and ground.
    • If not the specified value, test the high control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
  4. Connect a DMM, set on the diode setting, between the low control circuit terminal 1 and ground.
  5. Command the VES actuator to 0% with a scan tool. The DMM reading should be greater than 2.5 volts or display O.L.
    • If less than the specified value, test the low control circuit for a short to voltage or a short to ground. If the circuit tests normal, replace the EBCM.
  6. Command the VES actuator to 100% with a scan tool. The DMM reading should be less than 1 volt.
    • If greater than the specified range, test the low control circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
  7. If all circuits test normal, test or replace the VES actuator.
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