Workshop Manuals Factory service & repair Land Rover
01 Range Rover 2002MY ON Workshop Manual - System Description and Operation - LM - 6th Edition - NAS02 03 04 05 06 07 08 09 ENGINE - V810 11 12 ENGINE MANAGEMENT SYSTEM – V813 14 FUEL DELIVERY SYSTEM – V815 16 17 18 19 20 COOLING SYSTEM – V821 22 MANIFOLDS AND EXHAUST SYSTEM – V823 TRANSFER BOX24 AUTOMATIC TRANSMISSION – ZF 5HP2425 26 DRIVE AND PROPELLER SHAFTS27 28 FINAL DRIVE29 STEERING30 31 SUSPENSION32 33 34 35 BRAKES36 37 38 RESTRAINT SYSTEMS39 40 41 DOORS42 INTERIOR TRIM COMPONENTS43 44 45 SCREENS46 SEATS47 48 SUNROOF49 50 AIR CONDITIONING51 52 53 54 55 56 57 WIPERS AND WASHERS58 59 CHARGING AND STARTING60 61 62 63 64 LIGHTING65 66 BODY CONTROL UNIT67 68 COMMUNICATION DATA BUSES69 70 71 SECURITY72 WINDOWS73 74 75 ENTERTAINMENT AND INFORMATION SYSTEMS76 DRIVING AIDS77 78 INSTRUMENTS
Land Rover L322 Range Rover System Description and Operation12 · ENGINE MANAGEMENT SYSTEM – V8
12 · Engine

V8 VCC Control

Make
Land Rover
Model
Range Rover L322 Range Rover System Description and Operation
Section
VCC System › V8 VCC Control
ENGINE MANAGEMENT SYSTEM – V8V8 VCC Control · page 1 of 3
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ENGINE MANAGEMENT SYSTEM – V8

DESCRIPTION AND OPERATION 18-2-45

Camshafts
Each intake camshaft has two oil ports separated by three sealing rings on their forward ends.

The ports direct pressurized oil from the oil distribution flange to the inner workings of the VCC transmission.

Each camshaft has REVERSE threaded bores in their centres for the attachment of the timing chain sprockets on the 
exhaust cams and the VCC transmissions for each intake camshaft as shown.

Camshaft Position Impulse Wheels:
The camshaft position impulse wheels provide camshaft position status to the engine control module via the camshaft 
position sensors. The asymmetrical placement of the sensor wheel pulse plates provides the engine control module 
with cylinder specific position ID in conjunction with crankshaft position.

V8 VCC Control
As the engine camshafts are rotated by the primary and secondary timing chains, the ECM activates the VCC 
solenoids via a PWM (pulse width modulated) ground signal based on a program map. The program is influenced by 
engine speed, load, and engine temperature.

In its inactive or default position, the valves direct 100% engine oil pressure flow to achieve maximum “retard ”VCC 
positioning

Maximum Retard Position

M18 0811

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