Diagnostic Test

1. Start engine.
2. Check oil pressure warning lamp and confirm it is not illuminated.

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Is oil pressure warming lamp illuminated?

YES 

Check the engine oil level. Refer to INSPECTION .

NO 

GO TO STEP 2  .

Check intake valve timing control solenoid valve. Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Replace malfunctioning intake valve timing control solenoid valve. Refer to VALVE TIMING CONTROL SOLENOID VALVES (BANK 1) , VALVE TIMING CONTROL SOLENOID VALVES (BANK 2) .

Check crankshaft position sensor (POS). Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES 

GO TO STEP 4  .

NO 

Replace crankshaft position sensor (POS). Refer to REMOVAL AND INSTALLATION (UPPER OIL PAN) .

Check camshaft position sensor (PHASE). Refer to COMPONENT INSPECTION .

Is the inspection result normal?

YES 

GO TO STEP 5  .

NO 

Replace malfunctioning camshaft position sensor (PHASE). Refer to REMOVAL AND INSTALLATION (LH) , REMOVAL AND INSTALLATION (RH) .

Check the following.

• Accumulation of debris on the signal plate of camshaft rear end

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• Chipping signal plate of camshaft rear end

Is the inspection result normal?

YES 

GO TO STEP 6  .

NO 

Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to REMOVAL AND INSTALLATION .

Check service records for any recent repairs that may cause timing chain misalignment.

Are there any service records that may cause timing chain misalignment?

YES 

Check timing chain installation. Refer to REMOVAL AND INSTALLATION .

NO 

GO TO STEP 7  .

Check lubrication circuit. Refer to INSPECTION AFTER INSTALLATION .

Is the inspection result normal?

YES 

Check intermittent incident. Refer to INTERMITTENT INCIDENT .

NO 

Clean lubrication line.