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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) >> Component Testing
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Component Testing

  1. Ignition OFF, disconnect the harness connector at the Q4 Vehicle Level Control Solenoid Valve.
  2. Test for 18 - 45 Ω between the control terminal B and the ignition terminal B.
    • If not between 18 - 45 Ω 

      Replace the Q4 Vehicle Level Control Solenoid Valve.

    • If between 18 - 45 Ω 
  3. Test for infinite resistance between the control terminal C and ground.
    • If less than infinite resistance 

      Replace the Q4 Vehicle Level Control Solenoid Valve.

    • If infinite resistance 
  4. All OK.
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