Brake Lamp: Description and Operation

BRAKE AND REVERSE LAMPS

DESCRIPTION

Brake Lamps
Three brake lamps are fitted to the rear of the vehicle. Two brake lamps are mounted above the rear bumper, and share a dual filament bulb with the tail lamps. A third, high mounted tail lamp is housed within a casting mounted on the tail door above the spare wheel.

NOTE: NAS vehicles are also fitted with a second pair of brake lamp bulbs. These operate in conjunction with the normal brake lamp bulbs. These secondary bulbs are also used as fog lamps.

The brake lamps are operated by the brake pedal switch, which is mounted on the pedal box, and will only operate when the ignition switch is in the 'ignition' position.

The brake lamps will also operate without operation of the brake pedal. If Hill Descent Control (HDC) is engaged, ABS ECU will operate the brake lamps, responding from signals from the ABS modulator.

Reverse Lamps
The reverse lamps are incorporated into the tail lamp units, and will only operate when the ignition switch is in the 'ignition' position, and reverse gear is selected.

OPERATION

General
Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine compartment fuse box (C0632) on an R wire. Fusible link 3 (C0571) is connected to the ignition switch (C0028) by an N wire. When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0028) to fuse 2 of the passenger compartment fuse box (C0588) on an NW wire.