Description

Front Disc Brake

NOTE:
A = Hardwired









BRAKE CALIPERS
When hydraulic pressure is supplied to the caliper, the pistons extend to force the inner pad against the brake disc. The caliper reacts and slides along two guide pins to bring the outer pad into contact with the brake disc.

BRAKE PAD WEAR SENSORS
When a brake pad incorporating a brake pad wear sensor is approximately 75% worn, the sensor wire within the pad material is worn through and the brake pad wear sensor goes open circuit. When the instrument cluster detects the open circuit, it illuminates the amber LED (light emitting diode) in the brake warning indicator, displays an appropriate warning in the message center and sounds a warning chime. For additional information refer to 413-01 Instrument cluster.

NOTE:
New pad wear sensor leads need to be fitted whenever the brake pads are changed irrespective of the brake pad warning sensor being triggered.

BRAKE CALIPERS
Each caliper is mounted within a fixed carrier that is secured to the front wheel knuckle with two bolts. The inboard brake pad of the LH (left-hand) brake incorporates a wear sensor.
On SC (supercharger) vehicles, each outboard brake pad is installed with a pressed steel anti-rattle spring. A badge with the 'R' symbol is formed on the anti-rattle spring.

BRAKE PAD WEAR SENSORS
The brake pad wear sensor is wired in series with a wear sensor on the RH (right-hand) rear brake and the instrument cluster. If the thickness of one of the brake pads connected to a wear sensor decreases to a predetermined limit, the instrument cluster illuminates the brake warning indicator.

NOTE:
New pad wear sensor leads need to be fitted whenever the brake pads are changed irrespective of the brake pad warning sensor being triggered.