Hydraulic Control Assembly - Antilock Brakes: Service and Repair

HYDRAULIC UNIT

REMOVAL AND INSTALLATION

CAUTION:
When the hydraulic unit (integrated with ASC-ECU) is replaced, after turning the ignition switch ON or OFF (vehicle information from ETACS-ECU is registered), always carry out the calibration of all sensors (steering wheel sensor, G and yaw rate sensor, and brake fluid pressure sensor) at one time.

Pre-removal & Post-installation Operation:

Removal Steps 1-12:

REMOVAL SERVICE POINT

[A] HYDRAULIC UNIT (ASC-ECU) REMOVAL

CAUTION:
^ Be careful when removing the hydraulic unit because it is heavy.
^ Never loosen the nuts and the bolts because the hydraulic unit cannot be disassembled.
^ Do not drop or shock the hydraulic unit.
^ Do not turn the hydraulic unit upside down or lay down the unit because the inner air becomes difficult to be bled.

INSTALLATION SERVICE POINT

[A] BRAKE TUBE CONNECTION





Install the brake pipe to the hydraulic unit as shown in the figure.
1. To rear brake (RH) [Marking color: White]
2. From master cylinder (secondary) [Marking color: Yellow and white]
3. To front brake (LH) [Marking color: Red and white]
4. To front brake (RH) [Marking color: Orange and white]
5. From master cylinder (primary) [Marking color: Blue and white]
6. To rear brake (LH) [Marking color: Pink]