Electronic Brake Control Module: Service and Repair

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

REMOVAL

MODELS WITHOUT EyeSight

1) Disconnect the ground cable from battery.
2) Remove the air intake boot.
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 painted surface of the vehicle body.
^ If brake fluid is spilled on the painted surface of 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 and fluid enter the connectors.

MODELS WITH EyeSight

CAUTION:
^ Avoid unnecessary removal of parts in order to prevent fluid leakage.
^ When the VDCCM&H/U components are removed, be sure to perform the installation according to the installation procedures.

1) Disconnect the ground cable from battery.
2) Remove the air intake boot.
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.

(4) Using a flare nut wrench, disconnect pipes (A) and (B) from VDCCM&H/U.
(5) 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 and fluid enter the connectors.

INSTALLATION

CAUTION:
^ When installing the VDCCM&H/U to the bracket, make sure that there is no oil adhered to the bolts and the threads of VDCCM&H/U. If the oil is adhered, degrease it carefully before tightening.
^ Connect the VDCCM&H/U connector securely.
^ When installing the VDCCM&H/U, replace the damper, spacer and nut with new parts.

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:

MODELS WITH EyeSight

CAUTION:
^ When the VDCCM&H/U components are removed, be sure to perform the installation according to the following procedures to prevent fluid leakage.
^ When installing the VDCCM&H/U to the bracket, make sure that there is no oil adhered to the bolts and the threads of VDCCM&H/U. If the oil is adhered, degrease it carefully before tightening.
^ Be careful not to deform the bracket for hose assembly.
^ Connect the VDCCM&H/U connector securely.

1) Install the VDCCM&H/U.

NOTE:
Refer to the following figure for tightening torque.
(1) Set the VDCCM&H/U (a) to the bracket (b).
(2) Set the hose assembly (c) to the bracket (b).
(3) Set pipe A (d) and pipe B (e), and temporarily tighten the flare nuts.
(4) Tighten the VDCCM&H/U (a) and bracket (b).
(5) Tighten the hose assembly (c) and bracket (b).
(6) Tighten pipe A (d) and pipe B (e).
(7) Set the center pipes (f) to hose assembly (c), and temporarily tighten the flare nuts.
(8) Install the hose assembly (c) to the vehicle body.
(9) Tighten the flare nuts of the center pipes (f).
(10) Install the brake pipes (g).

Tightening torque:
T1: 7.5 Nm (0.76 kgf-m, 5.5 ft-lb)
T2: 15 Nm (1.53 kgf-m, 11.1 ft-lb)
T3: 18 Nm (1.84 kgf-m, 13.3 ft-lb)
T4: 19 Nm (1.94 kgf-m, 14.0 ft-lb)

2) Connect the VDCCM&H/U connector.
3) Install the air intake boot.
4) Bleed air from the brake system.
5) 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.

6) 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.