Hydraulic Control Assembly - Antilock Brakes: Service and Repair

Removal
1. Disconnect battery positive cable.
2. Disconnect 8-pin connector attaching HCU to wire harness and disconnect 4-pin connector attaching pump motor to harness.
3. Remove two tubes from inlet ports and three tubes from outlet ports of HCU. Plug each port to prevent brake fluid from spilling on paint and wiring.
4. Remove three nuts retaining HCU assembly to mounting bracket, then remove assembly from vehicle.
Installation
1. Insert HCU assembly into mounting bracket. Install three retaining nuts and torque to 12---18 ft.lbs.
2. Connect three tubes to outlet ports on side of HCU and two tubes to inlet ports on front of HCU. torque tube fittings to 10---18 ft lb
3. Connect 8-pin and 4-pin connectors.
4. Connect positive battery cable. Drive vehicle 10 or more miles to relearn PCM strategy.
5. Perform system brake bleeding procedures.