Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing
WARNING: This page is about a different variant/trim than selected.
- Measure the engine oil level. Fill, as required.
- Using the scan tool, inspect for diagnostic codes within the engine control module (ECM). Refer to Diagnostic System Check - Vehicle . Repair, as required.
- Verify proper engine oil pressure and operation of the active fuel management oil pressure relief valve. Refer to Oil Pressure Diagnosis and Testing .
- Inspect the CMP actuator solenoid valve for proper operation. Refer to Camshaft Position Actuator Solenoid Valve Inspection (Off-Vehicle)Camshaft Position Actuator Solenoid Valve Inspection (On-Vehicle)
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- 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.
- Verify proper operation of the CMP actuator control system. Refer to Diagnostic System Check - Vehicle .
NOTE:
Camshaft Position (CMP) Actuator and Solenoid Valve Diagnosis and Testing is applicable for RPO L99.