Diagnostic procedure

DTC P0012 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has the FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
1		No	Record FREEZE FRAME DATA on the 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 the 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 the appropriate DTC troubleshooting procedure. (See DTC P2088 or DTC P2089 ).
3		No	Go to the next step.
4	VERIFY ENGINE OIL PRESSURE Start the engine. Does the oil pressure warning light illuminate?	Yes	Inspect engine oil pressure. (See OIL PRESSURE INSPECTION ).
4		No	Go to the next step.
5	VERIFY TIMING CHAIN INSTALLATION Stop the engine. Remove the timing chain cover. Is the camshaft timing mark at the correct point? (See TIMING CHAIN REMOVAL/INSTALLATION ).	Yes	Go to the next step.
5		No	Reinstall the timing chain, then go to Step 8.
6	INSPECT OCV FOR MALFUNCTION Stop the engine. Remove the OCV. Inspect the position of the spool valve in the OCV. Is the spool valve located at the valve retard position?	Yes	VARIABLE VALVE TIMING MECHANISM IS NORMAL NOTE: This DTC is detected as an intermittent concern. The intermittent concern might be removed using the cleaning mode of the variable valve timing control function. Go to the next step.
6		No	Replace the OCV, then go to Step 8.
7	INSPECT ENGINE OIL RUNNER Inspect the following engine oil runners for clogging or leakage. Between the oil pressure switch and the OCV Between the OCV and the variable valve timing actuator In the variable valve timing actuator Is there any clogging or leakage?	Yes	Repair or replace the suspected runner, then go to the next step.
7		No	VARIABLE VALVE TIMING MECHANISM IS NORMAL NOTE: This DTC is detected as an intermittent concern. The intermittent concern might be removed using the cleaning mode of the 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 the engine and warm it up completely. Is PENDING CODE for this DTC present?	Yes	Replace the 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 ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
9		No	Troubleshooting completed.