Hydraulic Control Assembly - Antilock Brakes: Service and Repair

Removal

WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with eyes. Wash hands thoroughly after handling. If brake fluid contacts eyes, flush eyes with running water for 15 minutes. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately.

CAUTION: Brake fluid is harmful to painted and plastic surfaces. If brake fluid is spilled onto a painted or plastic surface, immediately wash it with water.

1. Disconnect the battery ground cable.





2. Position the radiator coolant recovery reservoir aside.
1 Remove the bolts.
2 Position the radiator coolant recovery reservoir aside.





3. Note: Do not disconnect the hose from the power steering pump reservoir.
Remove the bolts and position the power steering pump reservoir aside.





4. Disconnect the brake lines from the brake master cylinder.





5. Note: Plug each port of the Hydraulic Control Unit (HCU) to prevent brake fluid from spilling.

Disconnect the brake lines.
1 Remove the 7/16 - 24 brake lines.
2 Disconnect the 1/2 - 20 brake lines.





6. Disconnect the anti-lock brake control module electrical connector.
1 Lift the lock tab upward.
2 Disconnect the anti-lock brake control module electrical connector.





7. Remove the HCU bracket to inner fender well nuts.





8. Remove the HCU.
1 Disconnect the anti-lock brake control module electrical connectors.
2 Remove the HCU.

Installation

















1. Note: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mile) or more to relearn the strategy.

Note: Bleed the HCU after installation.

To install, reverse the removal procedure.