Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

1. 1  - The Diagnostic System Check - Engine Controls prompts the technician to complete some basic checks and store freeze frame data, if applicable. This creates an electronic copy of data taken when fault occurred. Information is then stored in scan tool for later reference.
2. 3  - This step checks operation of CMP actuator system. When commanded ON, CMP actuator solenoid advances the camshaft, usually causing engine to stall.
3. 4  - This step visually inspects operation of CMP actuator solenoid valve. Solenoid plunger and spool valve movement should be smooth and rapid from extended to retracted.