Hydraulic Control Unit (HCU) Overhaul

REMOVAL

NOTE: To replace the Hydraulic Control Unit (HCU) or the Controller Antilock Brake (CAB) on this vehicle, the entire Integrated Control Unit (ICU) needs to be removed from the vehicle. The CAB can then be separated from the HCU. Do not attempt to replace the CAB with the ICU mounted in the vehicle.

1. Remove the ICU from the vehicle.

Pump/Motor To CAB Wiring Harness:

2. Disconnect the pump/motor wiring harness from the CAB.

CAB Attaching Bolts:

3. Remove the 4 bolts attaching the CAB to the HCU.

Remove/Install CAB:

4. Remove the CAB from the HCU.

INSTALLATION
1. Install the CAB on the HCU.
2. Install the 4 bolts mounting the CAB to the HCU. Tighten the CAB mounting bolts to a torque of 2 Nm (17 inch lbs.).
3. Plug the pump/motor wiring harness into the CAB.
4. Install the ICU in the vehicle.
5. Bleed the base and ABS hydraulic systems.
6. Road test the vehicle to ensure proper operation of the base brakes and ABS.