4.7.1 Description Jaguar XK II рестайлинг

The crankcase ventilation valve is incorporated in the right hand cam cover.

Disconnection of the hose that runs between the valve and the intake manifold will result in one of the following

1. The engine will become very unstable at idle with a tendency to stall
2. The OBD system will detect a fuel system fault due to the un-metered air that enters the intake manifold
3. The OBD system will store a specific crankcase ventilation fault code P2279

Fault code P2279 is set if the measured lambda values for both cylinder banks simultaneously indicate an excessively lean condition, when all of the following entry conditions are true

1. More than a pre-determined time has elapsed since engine start
2. The engine speed is below a threshold, or idle speed control is active
3. Closed loop fuel control is active
4. The pre-catalyst Oxygen sensors are active
5. The coolant temperature is within a window
6. The atmospheric pressure is within a window
7. Fuel cut off is not active
8. A pre-determined time has elapsed since fuel cut off was last active
9. The fuel tank level is above a threshold

The hose connected between the left hand cam cover and the clean air duct

Scheme 93

Scheme 94

Scheme 95