Page 1097 of 2453
VDC-16
VDC Sequence Control
VEHICLE DYNAMICS CONTROL (VDC)
2. CONDITIONS FOR VDC SEQUENCE CONTROL
Page 1098 of 2453

VDC-17
VDC Sequence Control
VEHICLE DYNAMICS CONTROL (VDC)
NOTE:
The control operation starts from point A.
B: SPECIFICATION
1. CONDITIONS FOR COMPLETION OF
VDC SEQUENCE CONTROL
When the following conditions develop, the VDC
sequence control stops and VDC operation is re-
turned to the normal control mode.
1) When the speed of at least one wheel reaches
10 km/h (6 MPH).
2) When the brake pedal is pressed during se-
quence control and the stop light switch is set to
ON.
3) After completion of VDC sequence control.
4) When a malfunction is detected.
(1) All wheel speed (11) FR compression valve (21) Light OFF
(2) Ignition key (12) RR decompression valve (22) Light ON
(3) ABS warning light (13) RR compression valve (23) 3.4 seconds
(4) VDC warning light (14) RL decompression valve (24) 1 second
(5) VDC operation lamp (CAN output) (15) RL compression valve (25) 1.6 seconds
(6) Stop light switch (16) Pump motor (26) Point A
(7) Valve relay (17) Linear valve 1 (27) Reset
(8) FL decompression valve (18) Linear valve 2 (28) 0.8 seconds
(9) FL compression valve (19) 1.5 seconds (29) 1.2 seconds
(10) FR decompression valve (20) Approx. 3 sec. (30) 0.4 seconds
Page 1099 of 2453

VDC-18
Yaw Rate & Lateral G Sensor
VEHICLE DYNAMICS CONTROL (VDC)
5. Yaw Rate & Lateral G Sensor
A: REMOVAL
1) Disconnect the ground cable from the battery.
2) Remove the console box.
3) Disconnect the connector from the yaw rate & G
sensor.
4) Remove the yaw rate & G sensor.
CAUTION:
Do not drop or bump the yaw rate & G sensor.
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Install the yaw rate & G sensor to the body while
pointing the arrow mark on the sensor to the front of
the vehicle.
Tightening torque:
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
CAUTION:
After completion of installation, set the follow-
ing two positions.
•Positioning to the center of steering angle
sensor
•Positioning of the yaw rate & lateral G sen-
sors to zero.
The above procedure is required VDCCM&H/U
to identify the vehicle position afterward. For
the setting procedures of the 2 steps above, re-
fer to “VDC Control Module & Hydraulic Control
Unit (VDCCM&H/U)”.
MENT, VDC Control Module & Hydraulic Con-
trol Unit (VDCCM&H/U).>
VDC00347
VDC00346
Page 1100 of 2453

VDC-19
Steering Angle Sensor
VEHICLE DYNAMICS CONTROL (VDC)
6. Steering Angle Sensor
A: REPLACEMENT
CAUTION:
•Do not perform the removal except when the
replacement.
•When replacing more than three times, re-
place the combination switch as assembly to
protect the threads.
1) Set the steering wheel in a straight-ahead posi-
tion.
2) Disconnect the ground cable from the battery.
3) Remove the airbag module.
ule.>
WARNING:
Always refer to “Airbag System” when perform-
ing the airbag module repair service.
4) Remove the steering wheel.
5) Remove the screws and remove the steering
column lower cover.
6) Remove the two screws securing the steering
column upper cover.
7) Unlock the harness band and disconnect the
connector of the steering angle sensor.
8) Remove the screws which secure the roll con-
nector to steering column.
9) Remove the steering angle sensor from roll con-
nector.
10) Turn the protrusion portion of new steering an-
gle sensor to match the alignment mark of inspec-
tion hole.
CAUTION:
Be careful not to allow foreign matter to enter
into inspection hole.
11) Align the center of roll connector.
12) Apply a thin coat of grease that is supplied with
the new part, to the 4 protruding sections of the
steering angle sensor.
(1) Harness band
(2) Connector
VDC00093
( 1 )
( 2 )
VDC00348
(1) Protrusion portion
(2) Inspection hole
(3) Alignment mark
(1) Apply grease.
VDC00208
VDC00209
(1)
(2)
(3)
ABS00435
(1)
Page 1101 of 2453

VDC-20
Steering Angle Sensor
VEHICLE DYNAMICS CONTROL (VDC)
13) Align the position of the protrusion and install
roll connector to steering angle sensor.
Tightening torque:
0.5 N·m (0.05 kgf-m, 0.36 ft-lb)
14) Install the roll connector to combination switch.
15) Install the steering wheel.
Tightening torque:
45 N·m (4.6 kgf-m, 33.2 ft-lb)
16) Install the airbag module to the steering wheel.
Module.>
WARNING:
Always refer to “Air Bag System” before per-
forming the service operation.
17) Connect ground cable to battery.
CAUTION:
After completion of installation, adjust the fol-
lowing two positions.
•Positioning to the center of steering angle
sensor
•Positioning of the yaw rate & lateral G sen-
sors to zero.
The above procedure is required for the VDC-
CM to identify vehicle position afterward. For
the setting procedures of the 2 steps above, re-
fer to “VDC Control Module & Hydraulic Control
Unit (VDCCM&H/U)”.
MENT, VDC Control Module & Hydraulic Con-
trol Unit (VDCCM&H/U).>
VDC00208
VDC00207
Page 1102 of 2453

VDC-21
Front ABS Wheel Speed Sensor
VEHICLE DYNAMICS CONTROL (VDC)
7. Front ABS Wheel Speed Sen-
sor
A: REMOVAL
1) Disconnect the ground cable from the battery.
2) Disconnect the ABS wheel speed sensor con-
nector in the engine compartment.
3) Remove the sensor harness from the clip.
4) Remove the clip which secures the sensor har-
ness to the front strut.
5) Remove the front ABS wheel speed sensor from
housing.
CAUTION:
•Be careful not to damage the sensor.
•Do not apply excessive force to the sensor
harness.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
CAUTION:
Be careful not to damage the sensor.
NOTE:
•Check the identification (mark) on the harness to
make sure there is no warpage. (W1 (White))
•Check if the harness is not pulled and does not
come in contact with the suspension or body during
steering wheel effort.
C: INSPECTION
1. CHECK WITH SUBARU SELECT MONI-
TOR
1) Connect the Subaru Select Monitor to the data
link connector.
2) Select {Current Data Display & Save}. Check if
the speed indicated on the display changes in the
same manner as the speedometer reading during
acceleration/deceleration when the steering wheel
is in the straight-ahead position.
3) If the speed indicated on the display does not
change, check the ABS wheel speed sensor.
to VDC-22, ABS WHEEL SPEED SENSOR, IN-
SPECTION, Front ABS Wheel Speed Sensor.>
(1) To the front ABS wheel speed sensor connector
(2) Clip
VDC00349
VDC00350
(1)
(2)
DS-00249
Page 1103 of 2453
VDC-22
Front ABS Wheel Speed Sensor
VEHICLE DYNAMICS CONTROL (VDC)
2. ABS WHEEL SPEED SENSOR
1) Check the tip of the ABS wheel speed sensor for
foreign particles or damage. If necessary, clean the
tip or replace the ABS wheel speed sensor.
2) Connect a 12 V power supply to No. 2 terminal of
sensor connector as shown in the figure, then at-
tach resistance to the No. 1 terminal. Rotate the
wheel at about 2. 75 km/h (2 MPH), and measure
the voltage using an oscilloscope.
Standard value of output voltage:
0.7 — 1.4 V
(1) Oscilloscope
(2) ABS wheel speed sensor
ABS00388
(2)
(1)
100
1.4 V
0.7 V
12 V
2
1
12
Page 1104 of 2453
VDC-23
Rear ABS Wheel Speed Sensor
VEHICLE DYNAMICS CONTROL (VDC)
8. Rear ABS Wheel Speed Sen-
sor
A: REMOVAL
1) Disconnect the ground cable from the battery.
2) Disconnect the connector from the rear ABS
wheel speed sensor.
3) Remove the sensor harness from the rear arm
clip.
4) Remove the rear ABS wheel speed sensor from
the rear housing.
CAUTION:
•Be careful not to damage the sensor.
•Do not apply excessive force to the sensor
harness.
B: INSTALLATION
Install in the reverse order of removal.
CAUTION:
Be careful not to damage the sensor.
Tightening torque:
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
NOTE:
Check the identification (mark) on the harness to
make sure there is no warpage. (W3 (White))
C: INSPECTION
1. ABS WHEEL SPEED SENSOR
INSPECTION, Front ABS Wheel Speed Sensor.>
VDC00351
VDC00352
DS-00363