Circuit/System Testing

Ignition OFF, disconnect the harness connector at the camshaft position (CMP) actuator solenoid.
Ignition OFF, test for less than 10 Ω between the CMP low control circuit terminal 2 and ground G104.
- If greater than the specified range, test the CMP low control circuit for an open/high resistance. If the circuit tests normal, replace the PCM.
Disconnect the PCM harness connector X2 at the PCM.
Ignition ON, test for infinite resistance between the CMP low control circuit terminal 2 and ground G104.
- If less than the specified range, repair the short to ground in the CMP low control circuit.
Engine running, connect the CMP actuator solenoid to B+ and ground with a pair of 10 A 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 blockage or restriction in the CMP actuator system oil passages
  - Incorrect operation of the CMP actuator assembly-Refer to Camshaft Position Actuator Locking Pin Adjustment .
  - Correct engine valve timing-Refer to Symptoms - Engine Mechanical .
Test the solenoid high control circuit terminal 1 for high resistance. If the circuit tests normal, replace the PCM.
If all circuits test normal, test or replace the CMP actuator solenoid.