Variable Valve Timing and/or Control (VVT) System Monitoring

.13.00.00 VARIABLE VALVE TIMING AND/OR CONTROL (VVT) SYSTEM MONITORING

.13.01.00 General Description
In order to optimize engine torque, horsepower and engine emission the vehicle of this OBD group are equipped with an continuous variable valve timing camshaft on the intake side.

.13.02.00 Monitor function description
The VVT system will be monitored as presented and accepted during ARB meeting dated October, 15 2002 for:

Slow response :
Slow response of camshaft system causing an emission
increase to 1.5 x standard (slow response failure).

and

Target error :
Camshaft system does not react to computer command
stuck failure).

.13.03.00 Charts and flow charts