Hydraulic Control Assembly - Antilock Brakes: Service and Repair
Removal1. Disconnect the negative battery cable from the battery.
2. Remove the three main fuse box bracket bolts on the vehicle and the main fuse box bracket. Remove the hydraulic control unit.
3. Disconnect the unit connector from the unit.
4. Disconnect the six brake lines (2 inlet and 4 outlet) using a flare nut wrench. Be prepared to catch escaping brake fluid. Temporarily seal open brake lines with plastic caps or equivalent.
5. Using a star wrench, remove hydraulic control unit bracket bolts on the vehicle, and remove unit bracket.
6. Temporarily seal open brake line ports with plastic plugs or equivalent.
7. Store the hydraulic control unit in a protective container while it is being serviced.
Replacement
1. Install the hydraulic control unit bracket to vehicle and tighten the bracket bolts.
Tightening torque: 14 - 18 ft. lbs. (19 - 25 Nm, 1.9 - 2.5 kg-m)
2. Lower Hydraulic Control Unit into position and tighten its mounting screws to specification.
Tightening torque: 6 - 7 ft. lbs. (8 - 10 Nm, 0.8 - 1.0 kg-m)
3. Reconnect six brake lines. Be certain that the four lower outlet lines have been connected to the correct ports. Tighten the nuts to specification.
Tightening torque: 9 - 16 ft. lbs. (12 - 22 Nm, 1.3 - 2.2 kg-m)
4. To hydraulic control unit and connect Hydraulic Control Unit connector. Be certain connectors are fully mated.
5. Install the main fuse box bracket and tighten the bracket bolts.
6. Bleed the brake system using ABS procedure under Brake Bleeding; Service and Repair.