Diagnostic procedure

DTC P0021 [AJ] DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT OCV (LH) FOR MALFUNCTION Start engine. Increase engine speed. Stop engine. Remove OCV (LH). (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION ). Inspect position of spool valve in OCV (LH). Is spool valve located at valve retard position?	Yes	Go to the next step.
3		No	Replace OCV (LH), then go to Step 6. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION ).
4	INSPECT STOPPER PIN MECHANISM Remove timing chain. Inspect stopper pin. (See VARIABLE VALVE TIMING ACTUATOR INSPECTION ). Is stopper pin mechanism normal?	Yes	Go to the next step.
4		No	Replace variable valve timing actuator (LH), then go to Step 6. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION ).
5	INSPECT ROTOR POSITION Remove variable valve timing actuator (LH). (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION ). Is rotor position at maximum valve timing retard?	Yes	VARIABLE VALVE TIMING MECHANISM IS NORMAL NOTE: This DTC is detected by intermittent concern. Intermittent concern might be removed by cleaning mode of variable valve timing control function. Go to the next step.
5		No	Replace variable valve timing actuator, go to the next step. (See VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION ).
6	VERIFY TROUBLESHOOTING OF DTC P0021 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the WDS or equivalent. Perform the KOER SELF TEST using the WDS or equivalent. Is the PENDING CODE same DTC present?	Yes	Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
6		No	Go to the next step.
7	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to applicable DTC troubleshooting. (See DTC TABLE ).
7		No	Troubleshooting completed.