GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 Escalade 🢒 Hybrid 🢒 Hybrid Controls 🢒 Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing
  1. Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description.
  2. Measure the engine oil level. Fill, as required.
  3. Using the scan tool, inspect for diagnostic codes within the engine control module (ECM). Refer to Diagnostic System Check - Vehicle. Repair, as required.
  4. Inspect the CMP actuator solenoid valve for proper operation. Refer to Camshaft Position Actuator Solenoid Valve Inspection.
    5. • If valve inspection confirms proper movement of the spool, replace the CMP actuator and CMP valve.
    • If valve inspection confirms improper movement of the spool, replace only the CMP valve.
  5. Verify proper operation of the CMP actuator control system. Refer to Diagnostic Starting Point - Engine Controls.