Subaru Legacy (2005 year). Service manual — part 808
VDC(diag)-97
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AU:DTC C0071 STEERING ANGLE SENSOR OUTPUT
DTC DETECTING CONDITION:
Defective steering angle sensor
TROUBLE SYMPTOM:
VDC does not operate.
WIRING DIAGRAM:
• LHD model
VDC00327
30
29
13
B231
B234
E
2
4
1
3
3
1
4
2
B310
B310
VDCCM & H/U
1 2 3 4
11 12 13 14
27 28 29 30
15 16 17 18
31 32 33 34
19 20 21 22
35 36 37 38
23 24 25 26
39 40 41 42
5
6
7
8
9
10
1 2 3 4
B231
TWISTED WIRE
STEERING
ANGLE SENSOR
B234
3 4
5 6
1 2
7 8
B352
3
1
4
2
B352
VDC(diag)-98
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
• RHD model
VDC00247
30
29
13
B231
E
2
4
1
3
B310
B310
VDCCM & H/U
1 2 3 4
11 12 13 14
27 28 29 30
15 16 17 18
31 32 33 34
19 20 21 22
35 36 37 38
23 24 25 26
39 40 41 42
5
6
7
8
9
10
1 2 3 4
B231
TWISTED WIRE
STEERING
ANGLE SENSOR
VDC(diag)-99
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK STEERING WHEEL.
1) Drive the vehicle on a flat road.
2) Park the vehicle straight.
3) Check the steering wheel for deviation from
center.
Is the deviation from the center
of steering wheel less than 5
°?
Perform the cen-
tering adjustment
of steering wheel.
2
CHECK DRIVING PLACE.
Check if the vehicle ran the road with banks or
sandy surface (which does not mean a dirt
road).
Did the vehicle run the road
with banks or sandy surface
(which does not mean a dirt
road)?
VDCCM&H/U may
record DTC when
the vehicle ran the
road with banks or
sandy surface
(which does not
mean a dirt road).
3
CHECK OUTPUT OF STEERING ANGLE
SENSOR WITH SUBARU SELECT MONI-
TOR.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the steering angle sensor output dis-
played on display.
Does the steering angle sensor
output value on the display
vary in accordance with steer-
ing operation when turning the
steering wheel to the right or
left?
Replace the steer-
ing angle sensor.
4
CHECK VDCCM&H/U.
1) Turn the ignition switch to OFF.
2) Connect all the connectors.
3) Perform the clear memory mode.
4) Perform the inspection mode.
5) Read the DTC.
Is the same DTC displayed?
Replace the
VDCCM&H/U.
<Ref. to VDC-7,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>
5
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Perform the diag-
nosis according to
DTC.
Temporary poor
contact occurs.
VDC(diag)-100
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AV:DTC C0071 STEERING ANGLE SENSOR COMMUNICATION
DTC DETECTING CONDITION:
Signal does not come from steering angle sensor.
TROUBLE SYMPTOM:
VDC does not operate.
WIRING DIAGRAM:
• LHD model
VDC00327
30
29
13
B231
B234
E
2
4
1
3
3
1
4
2
B310
B310
VDCCM & H/U
1 2 3 4
11 12 13 14
27 28 29 30
15 16 17 18
31 32 33 34
19 20 21 22
35 36 37 38
23 24 25 26
39 40 41 42
5
6
7
8
9
10
1 2 3 4
B231
TWISTED WIRE
STEERING
ANGLE SENSOR
B234
3 4
5 6
1 2
7 8
B352
3
1
4
2
B352
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