Subaru Legacy (2005 year). Service manual — part 807
VDC(diag)-93
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 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).>
3
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Perform the diag-
nosis according to
DTC. <Ref. to
VDC(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
Temporary poor
contact occurs.
VDC(diag)-94
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AT:DTC C0071 EXCESSIVE VARIATION AMOUNT OF STEERING ANGLE SEN-
SOR 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)-95
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)-96
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
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).>
2
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Perform the diag-
nosis according to
DTC. <Ref. to
VDC(diag)-38, List
of Diagnostic Trou-
ble Code (DTC).>
Temporary poor
contact occurs.
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