Checking Components

Checking Components







NOTE: If the diagnostic trouble code (DTC) for correlation between the crankshaft position and camshaft position is stored, it must be fault-traced first.

HINT: Incorrect oil grade can cause malfunctions in the variable valve timing (VVT) unit. Contaminants in the engine oil can cause damage to components in the variable valve timing (VVT) unit.

Check the engine oil grade. Check especially for contaminants.

Hint: The variable valve timing (VVT) unit for the exhaust camshaft has a spring which turns the camshaft at control. This means that if the oil pressure becomes too low for the continuous variable valve timing unit, the spring controls the camshaft out too much.

Remove the camshaft reset valve, check the reset valve and the oil ducts in the cylinder head. Check for contaminants and blockages.

Check the engine oil pressure.

Try a new camshaft reset valve if no fault is found or if the above remedies do not rectify the fault.

HINT: The fault can also be caused by an internal fault in the variable valve timing (VVT) unit. If the above fault-tracing/remedies do not rectify the fault, the variable valve timing (VVT) unit may be damaged.

Remedy as necessary.

Other Information
- Oil pressure, checking
- VVT unit exhaust camshaft, replacing
- Location of components, engine compartment

Continue: Refer to Verification, Part 1. Verification, Part 1