Diagnostic Procedure

DTC P0012 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 online 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	VERIFY RELATED PENDING CODE OR STORED DTCS Is DTC P2088 or P2089 present?	Yes	Go to appropriate DTC troubleshooting procedure. (See DTC P2088 or DTC P2089 ).
3		No	Go to the next step.
4	VERIFY ENGINE OIL PRESSURE Start engine. Does oil pressure warning light illuminate?	Yes	Inspect engine oil pressure. (See OIL PRESSURE INSPECTION [L3, AJ] ).
4		No	Go to the next step.
5	VERIFY TIMING CHAIN INSTALLATION Stop engine. Remove timing chain cover. Is camshaft timing mark at correct point? (See TIMING CHAIN REMOVAL/INSTALLATION ).	Yes	Go to the next step.
5		No	Reinstall timing chain, then go to Step 8.
6	INSPECT OCV FOR MALFUNCTION Stop engine. Remove OCV. Inspect position of spool valve in OCV. Is spool valve located at valve retard position?	Yes	VARIABLE VALVE TIMING MECHANISM IS NORMAL NOTE: This DTC detected by intermittent concern. Intermittent concern might be removed by cleaning mode of variable valve timing control function. Go to the next step.
6		No	Replace OCV, then go to Step 8.
7	INSPECT ENGINE OIL RUNNER Inspect following engine oil runners for clogging or leakage. Between oil pressure switch and OCV Between OCV and variable valve timing actuator In variable valve timing actuator Is there any clogging or leakage?	Yes	Repair or replace suspected runner, then go to the next step.
7		No	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.
8	VERIFY TROUBLESHOOTING OF DTC P0012 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the WDS or equivalent. Turn the ignition switch off. Start engine and warm it up completely. Is PENDING CODE for this DTC present?	Yes	Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE ). Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
9		No	Troubleshooting completed.