Hydraulic Control Assembly - Antilock Brakes: Service and Repair

HYDRAULIC UNIT

Note: The only serviceable parts of the hydraulic unit are the valve relay and the pump motor relay; if there is a malfunction of any other part, the hydraulic unit must be replaced as an assembly.

Removal / Installation




1. Remove in the sequence shown in the figure, referring to the Removal Note.
2. Install in the reverse order of removal, referring to the Installation Note.
3. After installation, bleed the air in the following order.
(1) Rear wheel cylinders.
(2) Front wheel cylinders.
(3) Hydraulic unit


Removal Note:

Brake Pipe




1. Disconnect/connect the brake pipes from/to the hydraulic unit with the SST.


Valve Relay
1. Disconnect the negative battery cable.





2. Release the valve relay locks from the hydraulic unit, then remove the valve relay.


Motor Relay
1. Disconnect the negative battery cable.





2. Release the motor relay locks from the hydraulic unit, then remove the motor relay.