Checking The Component

Check the oil level and oil quality.

Check the mechanical function of the variable valve timing (VVT) unit and the reset valve.

Remedy as necessary

Other information:

For the camshaft reset valve diagnostic functions, see Camshaft diagnostics
To access and replace the camshaft reset valve, see Variable Valve Timing Solenoid, Replacing
For information about signals see Signal specification .

Fig 1: Identifying Camshaft Reset Valve (Continuous Variable Valve Timing (CVVT))

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected?

Check that the timing belt has not jumped off and that the camshaft is in the correct position.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

Other information:

To clean the camshaft reset valve, see VVT solenoid, inspection and cleaning
For the camshaft reset valve diagnostic functions, see Camshaft diagnostics
To access and replace the camshaft reset valve, see Variable Valve Timing Solenoid, Replacing
For information about signals see Signal specification .

Fig 1: Identifying Camshaft Reset Valve (Continuous Variable Valve Timing (CVVT))

Courtesy of VOLVO CARS OF NORTH AMERICA.