DESCRIPTION AND OPERATION
RANGE ROVER 4.35
STARTING AND CHARGING – V8
DESCRIPTION
Starting
The starting system on the vehicle comprises a 12 V starter motor which drives the engine
to start the combustion process. The starter converts electrical energy into mechanical
power. The vehicle electrical system must be capable of supplying sufficient power to enable
the engine to be cranked.
Range Rover features 'lazy starting'. This entails the driver not having to hold the ignition key
in the 'crank position'. Starting of the engine is controlled automatically by the Engine Control
Module (ECM), which provides power to the starter motor until engine speed is greater than
920 rpm (engine cold) or 680 rpm (engine warm).
Charging
The charging system comprises a battery and an alternator. The battery must be of a
sufficient capacity to operate the starter motor and operate the various electrical systems in
the vehicle. The alternator charges the battery when the engine is running and increases its
output as demand on the battery increases.
CAUTION: The battery positive terminal uses a pyrotechnic attachment which
detaches the battery cable in the event of a crash severe enough to trigger the
airbags. Refer to the Supplementary Restraint System section of the System
Description and Operation Workshop manual for further details.
The alternator is located at the front LH side of the engine. The alternator has an output of
90/150 Amps and is manufactured by Bosch. A polyvee belt drives the alternator pulley,
which in turn is driven from the engine crankshaft pulley.
The instrument pack incorporates a charge warning lamp which illuminates when there is no
output or a low output from the alternator. For a detailed description of the starting and
charging system, refer to the Engine Management System – V8 section of the System
Description and Operation Workshop manual.
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