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Home >> Jaguar >> 2015 >> XFR-S >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (Engine - V6 S/C 3.0L Petrol -- XF/X250) >> Engine - V6 S/C 3.0L Petrol >> Engine - System Operation And Component Description (G1791724) >> Description And Operation >> Variable Camshaft Timing (VCT) >> VCT Operating Ranges

VCT Operating Ranges

WARNING: This page is about a different car, the 2015 Jaguar XF, 2014 Jaguar XF, and 2013 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
CAMSHAFT VALVE OPENS VALVE CLOSES
Intake 33 degrees Before Top Dead Center (BTDC) to 29 degrees After Top Dead Center (ATDC) 197 to 259 degrees ATDC
Exhaust 236 to 186 degrees Before Top Dead Center (BTDC) 6 to 56 degrees ATDC

The system consists of a VCT unit and a VCT solenoid for each camshaft. The ECM controls the system using PWM (Pulse Width Modulation) signals to the VCT solenoids.

The torsional energy generated by the valve springs and the inertia of the valve train components are used to operate the system.

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