See Figures 1 and 2
The 4-wheel Anti-lock Brake System (ABS) used on Sidekick Sport models controls the fluid pressure applied to each wheel from the master cylinder so that the wheels will not lock even during hard braking. The 4-wheel ABS consists of the following components:
The wheel speed sensors detect wheel rotation, and sends this information to the ABS control module. The ABS control module receives this incoming signal, and a signal from the G sensor, and operates the ABS hydraulic unit to prevent wheel lock up.
The ABS hydraulic unit controls the brake fluid pressure applied to each of the four wheels, to prevent wheel lock up.
The fail-safe relay supplies power to the solenoid valve in the ABS hydraulic unit and pump motor relay. The pump motor relay supplies power to the pump motor in the ABS hydraulic unit.
The ABS warning light is located in the instrument t cluster and informs the driver of any detected abnormality in the ABS system.
The G sensor detects vehicle deceleration, and provides this information to the ABS control module.