Anti-Lock Brake System (ABS)

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The ABS consists of the following components:

ABS module
Hydraulic control unit (HCU)
Front wheel speed sensor
Front wheel speed sensor ring
Rear axle speed sensor
Rear axle speed sensor ring (integral to the differential case)

The ABS prevents wheel lockup by monitoring the wheel speed sensors and actuating the HCU, modulating the brake pressure to the brake calipers. By preventing the wheels from locking up, the driver is able to maintain steering control and stop in the shortest possible distance under most conditions. The engine only traction control (EOTC) system utilizes the PCM to prevent wheel spin and help maintain vehicle control during acceleration. This system functions by obtaining wheel speed information from the ABS and modulating engine torque by regulating fuel and spark.

The rear axle speed sensor ring is attached to the differential case. It is necessary to remove the ring gear in order to remove the rear axle speed sensor ring. Refer to REAR DRIVE AXLE/DIFFERENTIAL - DANA 80 , REAR DRIVE AXLE/DIFFERENTIAL - DANA S110 AND S130 , WHEEL HUBS AND BEARINGS - FULL FLOATING AXLE - DANA , REAR DRIVE AXLE/DIFFERENTIAL - FORD 10.50-INCH RING GEAR or WHEEL HUBS AND BEARINGS - FULL FLOATING AXLE - FORD .