Disconnect the engine wiring harness electrical connector from either the intake (2) or exhaust (1) camshaft position actuator solenoid valve, as required.
Remove the exhaust (1) camshaft position actuator solenoid valve bolt and valve, as required.
Remove the intake (2) camshaft position (CMP) actuator solenoid valve bolt and valve, as required.
Inspect the solenoid valve O-ring seals from damage, replace as necessary.