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Home >> Cadillac >> 2017 >> Escalade Base, 4WD >> Repair and Diagnosis (Single Page) >> Suspension >> Electronic Suspension >> Suspension Control System - Suspension Leveling >> Diagnostic Information and Procedures >> DTC C0660: Level Control Exhaust Solenoid Valve Circuit (With Z95) >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify the Q4 Vehicle Level Control Solenoid Valve turns ON and OFF when the Exhaust Valve is commanded On and Off with the scan tool.
    • If the valve does not turn ON and OFF with each command 

      Refer to Circuit/System Testing

    • If the valve turns ON and OFF with each command 
  3. All OK.
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