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

CAUTION:

When installing the hydraulic unit assembly VDC to the bracket COMPL hydraulic unit VDC, make sure that there is no oil adhered to the nuts and the threads of hydraulic unit assembly VDC. If the oil is adhered, degrease it carefully before tightening.
Connect the hydraulic unit assembly VDC connector securely.
When the hydraulic unit assembly VDC has been replaced, be sure to perform the module registration.

Install the bracket COMPL hydraulic unit VDC and the hydraulic unit assembly VDC.

Attach the bracket COMPL hydraulic unit VDC.
Tightening torque:

33 N.m (3.4 kgf-m, 24.3 ft-lb)
Using a new damper, washers, and nuts, install the hydraulic unit assembly VDC to the bracket COMPL hydraulic unit VDC.
Tightening torque:

7.5 N.m (0.8 kgf-m, 5.5 ft-lb)
Connect the hydraulic unit assembly VDC connector.
Install each brake pipe.
Preparation tool:

Flare nut wrench

Crowfoot wrench

NOTE: If the work can be performed with the front and back sides reversed, it is also possible to use a 6-point crowfoot wrench.

Tightening torque:

TIGHTENING TORQUE SPECIFICATION

Calculation formula

T1 = 15 N.m (1.5 kgf-m, 11.1 ft-lb) xL1/(L1 + L2)

T2 = 19 N.m (1.9 kgf-m, 14.0 ft-lb) xL1/(L1 + L2)

T: Reading of the torque wrench

L1: Effective length of the torque wrench

L2: Effective length of the crowfoot wrench

NOTE: If the effective length of the tool used is unknown, consult the manufacturer of the tool.

Courtesy of SUBARU OF AMERICA, INC.

(a)	Effective length of the crowfoot wrench (L2)
(b)	Effective length of the torque wrench (L1)
(c)	Center of the open end of crowfoot wrench
(d)	Center of drive square of the torque wrench
(e)	Center of the position where a force is applied by hand

Fig 1: Hydraulic Unit Assembly Bolts With Torque Specification

Courtesy of SUBARU OF AMERICA, INC.

Install the intake duct No. 3. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>INSTALLATION .
Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
Bleed air from the brake system. Ref. to BRAKE>AIR BLEEDING>PROCEDURE .
Perform parameter confirmation, selection, and registration.
NOTE:
- When the hydraulic unit assembly VDC is replaced, be sure to perform the parameter selection/registration and module registration.
- When the registration has not been performed, the DTC code [SELECTED PARAMETER] 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. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U)>MAINTENANCE MODE>VDCCM PARAMETER CHECK .
2. If the applied model and grade of the target vehicle are not included, perform parameter selection and registration. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U)>MAINTENANCE MODE>VDCCM PARAMETER SELECTION .
3. When the hydraulic unit assembly VDC is replaced, perform the module registration. Ref. to COMMON (DIAGNOSTICS)>UNIT REGISTRATION>OPERATION .
Perform "VDC sensor midpoint setting mode". Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U)>ADJUSTMENT>VDC SENSOR MIDPOINT SETTING MODE .