Spark

Exterior Lighting Systems Description and Operation

The exterior lighting system consists of the following lamps if equipped:

The headlamps consist of 1 single bulb which provides low and high beam. The I/P fuse block controls the headlamps based on the inputs explained above. When a dipped beam request is received, the I/P fuse block grounds the headlamp dipped beam relay control circuit illuminating the dipped beam headlamps. When the indicator/multi-function switch is placed in the main beam position, the indicator/multi-function switch grounds the headlamp main beam relay control circuit.

When the dipped beam headlamps are on and the indicator/multi-function switch is momentarily placed in the flash to pass position. The indicator/multi-function switch applies ground to the main beam relay control circuit. This energises the main beam relay, closing the switch side contacts of the main beam relay, applying battery voltage to the main beam fuse. Battery voltage is applied from the main beam fuse through the main beam voltage supply circuit to the main beam headlamp assemblies. This causes the main beam headlamps to illuminate at full brightness momentarily or until the flash to pass switch is released.

The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch energises the front fog lamp by applying voltage to the front fog lamp control circuit. When the front fog lamp relay is energised, the relay switch contacts close and battery voltage is applied through the front fog lamp fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.

The rear fog lamp switch signal circuit is grounded through a resistor momentarily by pressing the rear fog lamp switch. The I/P fuse block energises the rear fog lamp supply voltage circuit which illuminates the rear fog lamp and rear fog indicator.

Battery voltage is supplied at all times to the coil and switch sides of the park lamp relay located in the under bonnet fuse block. When the headlamps are turned ON, I/P fuse block energises the park lamp relay by applying ground to the park lamp relay control circuit. When the park lamp relay is energised, the relay switch contacts close and battery voltage is applied through the park lamp fuses to the park lamp supply voltage circuit which illuminates the park, number plate, and tail lamps.

When the headlamp switch is placed in the PARK LIGHT or DIPPED BEAM position, I/P fuse block energises the park lamp relay by applying ground to the park lamp relay control circuit. When the park lamp relay is energised, the relay switch contacts close and battery voltage is applied through the park lamp fuses to the park lamp supply voltage circuit which illuminates the park, number plate, and tail lamps.

The park lamps, tail lamps and number plate lamps are turned ON when the headlamp switch is placed in the PARK LIGHT or DIPPED BEAM position. When the headlamp switch is placed in the PARK LIGHT or DIPPED BEAM position, I/P fuse block energises the park lamp relay by applying ground to the park lamp relay control circuit. When the park lamp relay is energised, the relay switch contacts close and battery voltage is applied through the park lamp fuses to the park lamp supply voltage circuit which illuminates the park, number plate, and tail lamps.

Indicator/multi-function switch provides a pulsating voltage to the indicator lamps with the switch in the left or right position. The indicator lamps may only be activated with the ignition switch in the ON or START position. When the indicator/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, the indicator/hazard flasher module then applies a pulsating voltage to the front and rear indicator lamps and instrument cluster indicators through there respective voltage supply circuits.

The repeater lamps are located in the front wing. The repeater lamps are used as additional indicator lamps, and operate as described in the Indicator/Hazard Flasher Lamps description.

The hazard flashers may be activated in any power mode. The indicator hazard flasher module controls the vehicle indicators and hazard warning flashers based on inputs from the indicator/multifunction switch. When the hazard switch is activated, ground from G302 is applied through the indicator hazard flasher module ground circuits to the indicator hazard flasher module indicating the hazard flasher ON request. The module will then apply a pulsating battery voltage to the left and right indicator lamp control circuits, cycling all indicator lamps, and both instrument panel cluster (IPC) indicator indicators ON and OFF.

Battery voltage is supplied at all times to the brake lamp switch. When the brake pedal is pressed, battery voltage is applied through the brake lamp switch and the brake lamp control circuit illuminating the brake lamps.

When the transmission is placed in the REVERSE position, the reversing lamp switch (MT) or park/neutral position (PNP) switch (AT) contacts close providing battery voltage to the reversing lamps. The reverse lamps are permanently grounded. With both power and ground the reversing lamps illuminate. Once the driver moves the gear selector out of the REVERSE position, the switch contacts open and the reversing lamps turn OFF.