Circuit/System Testing
- With the ignition OFF, inspect the engine wiring harnesses carrying the CMP sensor circuits for the following conditions:
- Close routing of secondary ignition wires
- Close routing of aftermarket electrical equipment
- Close to solenoids, motors, and relays
- Correct any wire harness routing or component placement conditions, if it is determined to be a possible source of electrical interference.
- Remove the affected CMP sensor. Inspect the CMP sensor and the camshaft actuator reluctor wheel for the following conditions.
- Incorrect sensor installation
- A cracked or damaged sensor
- The sensor coming in contact with the reluctor wheel
- Excessive air gap between the reluctor wheel and the sensor
- Foreign material passing between the sensor and the camshaft reluctor wheel
- Camshaft reluctor wheel damage
- If you find a condition with the CMP sensor or the camshaft reluctor wheel, repair as necessary.
- If a condition is not found replace the affected CMP sensor.