Circuit/System Testing

Ignition OFF, disconnect the harness connector at the camshaft position (CMP) actuator solenoid.
Engine running, connect the CMP actuator solenoid to B+ and ground with a pair of 10A fused jumper wires. Verify the engine runs rough or stalls.
- If the engine does not run rough or stall, remove the CMP actuator solenoid and verify the solenoid plunger moves 3 mm (0.125 in) when connected to B+ and ground. If the solenoid plunger moves less than the specified range, test or replace the CMP actuator solenoid. If the solenoid plunger moves greater than the specified range, test the following conditions:

A plugged or restricted CMP actuator solenoid oil filter
A blockage or restriction in the CMP actuator system oil passages
Low oil pressure or oil supply to the CMP actuator assembly or actuator solenoid
A damaged or misaligned CMP sensor reluctor
A worn timing chain and jumped timing-Timing Chain and Sprocket Replacement
The wrong camshaft installed
Incorrect operation of the CMP actuator assembly-Camshaft Actuator Locking Pin Adjustment and Timing Chain and Sprocket Replacement