Circuit/System Testing
- Ignition OFF, inspect the crankshaft balancer bolt for the proper torque. Refer to Fastener Tightening Specifications
.
- If the crankshaft balancer bolt is not at the proper torque, refer to Crankshaft Balancer Replacement .
- Remove the CMP actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Replacement .
- Connect a jumper wire between the CMP actuator low reference circuit at the solenoid and a good ground. Connect a fused jumper wire to the CMP actuator high control circuit at the solenoid. Momentarily touch the fused jumper to B+. Observe the spool valve inside the CMP actuator. The spool valve should move from fully closed to fully opened position.
- If the spool valve inside the CMP actuator solenoid does not move, replace the CMP actuator solenoid.
- Inspect the CMP actuator for binding or being stuck.
- Inspect the engine for correct valve timing. Refer to Timing Chain and Sprocket Replacement .