Range Rover L322 User Manual download pdf (Page 99)

DESCRIPTION AND OPERATION

4.74 RANGE ROVER

HEAD, SIDE AND TAIL LAMPS

DESCRIPTION

General

Operation of the head, side, tail, and side marker (NAS vehicles only) is controlled by the

Light Check Module (LCM). The LCM receives inputs from other systems via the I Bus.

Two headlamp systems are available; Halogen or bi-xenon. The two types of headlamps

share a common lense.

NOTE: NAS vehicles are fitted with headlamp lenses marked with a Department of

Transport (DOT) rating.

The bi-xenon headlamps illuminate when an arc of electrical current is established between

two electrodes within the bulb. The xenon gas sealed in the bulb reacts to the electrical

exitation and the heat generated by the current flow. The causes the gas to produce a blue/

white light.

WARNING: The bi-xenon system generates up to 28000 volts and contact with this

voltage could lead to fatality. Ensure the headlamps are switched off before working

on the system.

For more details of headlamp operation, refer to the Lighting section of the System

Description and Operation Workshop Manual.

OPERATION

Halogen System

Power Distribution

Feed from the positive battery terminal (C0192) is supplied to fuse 53, fusible link 3, and

fusible link 4 on an R wire. All are located in the passenger compartment fuse box. Fusible

link 3 (C0589) and fusible link 4 (C0590) provide constant battery feeds to the Light Check

Module (LCM) (C0937 & C2039 respectively) on a pair of R wires. The LCM (C2039) is

earthed on an N wire.

Fuse 53 (C0583) provides a constant battery feed to the ignition switch (C0099 on Td6

vehicles, C0028 on V8 vehicles) on an R wire. When the ignition switch is turned to the

'auxiliary' position, current flows across the switch (C0099 on Td6 vehicles, C0028 on V8

vehicles) to fuse 9 of the passenger compartment fuse box (C0585) on a PB wire. Fuse 9

(C0587) provides an auxiliary ignition feed to the LCM (C2040) on a PY wire.

When the ignition switch is turned to the 'ignition' position, current flows across the switch

(C0099 on Td6 vehicles, C0028 on V8 vehicles) to fuse 4 of the passenger compartment

fuse box (C0585) on a G wire. Fuse 4 (C0587) provides an ignition feed to the LCM (C2040)

on a GS wire.

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Lee 18 Apr 2024 | 04:50:09

Range Rover L322 User Manual Page 99