Checking the function
NOTE:
The check below refers to camshaft control exhaust and cannot be performed on cars that do not have control of camshaft exhaust.
HINT: The malfunction may be intermittent, the check below is relevant when/just before the symptom appears. If diagnostic trouble code for camshaft control is stored, then troubleshoot that diagnostic trouble code first.
- Start the engine and run it to normal operating temperature. Wait until the engine coolant temperature (ECT) reaches 80°C.
Read off the camshaft control's actual and desired values when control starts. This takes approx. 2 minutes after engine start.
Check that the values match an accuracy of approx. +/- 8 °C.
HINT: Incorrect values can be caused by:
- Impurities in the reset valve camshaft, try cleaning the valve.
- Defective reset valve camshaft.
Remedy as necessary.
Other information:
- See VVT solenoid, inspection and cleaning
- For B5244S/S2, see Camshaft seal/variable valve timing (VVT) unit, replacing
- For B5244S6, see Camshaft seal/variable valve timing (VVT) unit, replacing .