Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 518

VEHICLE DYNAMICS CONTROL (VDC)

VDC

Page

1.

General Description  ...................................................................................2

2.

Vehicle Dynamics Control System  .............................................................7

3.

VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)  ..............8

4.

ABS Sequence Control  ............................................................................14

5.

VDC Sequence Control ............................................................................17

6.

Yaw Rate and G Sensor  ..........................................................................20

7.

Steering Angle Sensor  .............................................................................22

8.

Front ABS Wheel Speed Sensor ..............................................................24

9.

Rear ABS Wheel Speed Sensor  ..............................................................26

10.

Front Magnetic Encoder ...........................................................................27

11.

Rear Magnetic Encoder  ...........................................................................28

12.

VDC OFF Switch ......................................................................................29

VDC-2

General Description

VEHICLE DYNAMICS CONTROL (VDC)

1. General Description

A: SPECIFICATION

Item

Specification or identification

ABS wheel speed sensor

ABS wheel speed sensor gap 
(for reference)

Front

0.77 — 1.43 mm (0.030 — 0.056 in)

Rear

0.43 — 1.78 mm (0.017 — 0.070 in)

Identifications of harness 
(marks, color)

Front

RH

K1 (white)

LH

K2 (yellow)

Rear

RH

P5 (white)

LH

P6 (yellow)

VDCCM&H/U identification

STI model

ST

Except for STI model

SR

VDC-3

General Description

VEHICLE DYNAMICS CONTROL (VDC)

B: COMPONENT

1. ABS WHEEL SPEED SENSOR

(1)

Front ABS wheel speed sensor

(4)

Hub unit bearing

Tightening torque: N·m (kgf-m, ft-lb)

(2)

Front housing

(5)

Magnetic encoder

T1: 7.5 (0.76, 5.5)

(3)

Rear ABS wheel speed sensor

 

 

T2: 33 (3.36, 24.3)

VDC00520

(2)

(4)

(5)

(3)

T1

T2

(1)

T1

T1

VDC-4

General Description

VEHICLE DYNAMICS CONTROL (VDC)

2. YAW RATE & G SENSOR

3. STEERING ANGLE SENSOR

(1)

Yaw rate & G sensor

(2)

Bracket

Tightening torque: N·m (kgf-m, ft-lb)

 

 

T: 7.5 (0.76, 5.5)

VDC00447

(1)

(2)

T

T

(1) Steering angle sensor

VDC00196

(1)