CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012)
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY)
CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (FOR INTAKE CAMSHAFT)