Hydraulic Control Assembly - Antilock Brakes: Service and Repair

VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)

REMOVAL

1) Disconnect the ground cable from battery.
2) Remove the air intake boot.
^ H4 model
^ H6 model
3) Remove the VDC control module & hydraulic control unit (VDCCM&H/U).
(1) Remove any dirt from around the VDCCM&H/U.
(2) Push the lock button (a), pull down the lock lever (b) and disconnect the VDCCM&H/U connector.

CAUTION:
Do not pull on the harness when disconnecting the connector.





(3) Using a flare nut wrench, disconnect each brake pipe from VDCCM&H/U.

CAUTION:
^ Wrap the brake pipe with a vinyl bag so as not to spill the brake fluid on the vehicle body.
^ If brake fluid is spilled on the vehicle body, wash it off immediately with water and wipe clean.





(4) Remove the bolt, and then remove the VDCCM&H/U from the bracket damper.

CAUTION:
^ Do not drop or bump the VDCCM&H/U.
^ Do not turn the VDCCM&H/U upside down or place it sideways for storage.
^ Be careful not to let foreign matter enter the VDCCM&H/U.
^ Be careful that no water enters the connectors.





INSTALLATION

CAUTION:
^ When installing the VDCCM&H/U to the bracket, make sure that there is no oil adhered to the threads of VDCCM&H/U. If the oil is adhered, degrease it carefully before tightening.
^ Connect the VDCCM&H/U connector securely.

1) Install each part in the reverse order of removal.

2) Bleed air from the brake system.
3) Perform parameter confirmation, selection, and registration.

NOTE:
^ When the VDCCM&H/U is replaced with a new part, be sure to perform the selection registration operation.
^ For the selection and registration of parameter, the Subaru Select Monitor is required.
^ When the registration has not been performed, the DTC code "Parameter selection error" is detected together with the ABS/EBD/VDC warning light illumination.

(1) Check that the applied model and grade of the relevant vehicle are included.
(2) If the applied model and grade of the target vehicle are not included on the {Confirm on parameter} display screen, perform parameter selection and registration.
4) Perform mode setting for each sensor.
^ Set up mode for Neutral of Steering Angle Sensor & Lateral G Sensor 0 point:
^ Longitudinal G sensor & lateral G sensor 0 point setting mode: