Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 538

VDC(diag)-51

List of Diagnostic Trouble Code (DTC)

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

C0062

1AB8H
1AC0H
1AC1H
1AD0H

Normal Opening
Valve 2 Malfunction

Primary cut valve mal-
function in VDCCM&H/
U

<Ref. to VDC(diag)-61, DTC C0062 NORMAL OPENING
VALVE 2 MALFUNCTION, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

C0063

1BB8H
1BC0H
1BC1H
1BD0H

Normal Closing
Valve 1 Malfunction

Secondary suction
valve malfunction in
VDCCM&H/U

<Ref. to VDC(diag)-61, DTC C0063 NORMAL CLOSING
VALVE 1 MALFUNCTION, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

C0064

1CB8H
1CC0H
1CC1H
1CD0H

Normal Closing
Valve 2 Malfunction

Primary suction valve
malfunction in
VDCCM&H/U

<Ref. to VDC(diag)-62, DTC C0064 NORMAL CLOSING
VALVE 2 MALFUNCTION, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

C0071

2130H

Steering Angle Sen-
sor Offset Is Too Big

Excessive steering
angle sensor output off-
set

<Ref. to VDC(diag)-86, DTC C0071 STEERING ANGLE
SENSOR OFFSET IS TOO BIG, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>

2134H

Change Range of
Steering Angle Sen-
sor Is Too Big

Excessive variation
amount of steering
angle sensor output

<Ref. to VDC(diag)-87, DTC C0071 CHANGE RANGE OF
STEERING ANGLE SENSOR IS TOO BIG, Diagnostic Pro-
cedure with Diagnostic Trouble Code (DTC).>

212EH

2132H
2136H
2138H

213CH

2150H
2151H
2152H
2153H
2154H
2155H
2156H
2157H
2158H
2159H

215AH

Steer Angle Sensor
Op

Steering angle sensor
output

<Ref. to VDC(diag)-88, DTC C0071 STEER ANGLE SEN-
SOR OP, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>

2104H

Steering Angle Sen-
sor Malfunction

Steering angle sensor
power supply malfunc-
tion

<Ref. to VDC(diag)-90, DTC C0071 STEERING ANGLE
SENSOR MALFUNCTION, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

DTC

Detailed

code

Item

Content of diagnosis

Reference

VDC(diag)-52

List of Diagnostic Trouble Code (DTC)

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

C0072

1E1AH
1E1EH

1E22H
1E26H
1E28H

1E2CH

1E34H
1E38H

1E3AH
1E3FH

Abnormal Yaw Rate
Sensor Output

Yaw rate sensor output

<Ref. to VDC(diag)-92, DTC C0072 ABNORMAL YAW
RATE SENSOR OUTPUT, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

1EB6H

Voltage Inputted to
Yaw Rate Sensor
Exceeds Specifica-
tion

Yaw rate sensor power
supply/output

<Ref. to VDC(diag)-94, DTC C0072 VOLTAGE INPUTTED
TO YAW RATE SENSOR EXCEEDS SPECIFICATION,
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

1E30H

Change Range of
Yaw Rate Sensor
Signal Is Too Big

Excessive variation
amount of yaw rate sen-
sor output

<Ref. to VDC(diag)-96, DTC C0072 CHANGE RANGE OF
YAW RATE SENSOR SIGNAL IS TOO BIG, Diagnostic Pro-
cedure with Diagnostic Trouble Code (DTC).>

1EB7H
1EBFH
1EB5H

1EBCH
1EBDH

1EBEH
1EC0H
1EC2H
1EC3H
1EC4H
1EC6H

1ECEH

1ECFH
1ED0H
1ED3H
1ED4H
1ED5H

Yaw Rate Sensor
Communication

Yaw rate sensor com-
munication

<Ref. to VDC(diag)-98, DTC C0072 YAW RATE SENSOR
COMMUNICATION, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>

1EB9H
1ED6H

Sensor Type Abnor-
mal

Different yaw rate sen-
sor specification

<Ref. to VDC(diag)-101, DTC C0072 SENSOR TYPE
ABNORMAL, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>

C0073

1D46H
1D47H

Lateral G Sensor
Offset Is Too Big

Excessive amount of
lateral G sensor output
offset

<Ref. to VDC(diag)-101, DTC C0073 LATERAL G SENSOR
OFFSET IS TOO BIG, Diagnostic Procedure with Diagnostic
Trouble Code (DTC).>

1D44H
1D45H

Abnormal Lateral G
Sensor Output

Lateral G sensor output

<Ref. to VDC(diag)-101, DTC C0073 ABNORMAL LAT-
ERAL G SENSOR OUTPUT, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>

1D49H

Excessive Lateral G
Sensor Signal

Excessive lateral G
sensor output

<Ref. to VDC(diag)-102, DTC C0073 EXCESSIVE LAT-
ERAL G SENSOR SIGNAL, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).>

C0074

1F4EH
1F4FH
1FB1H
1FC0H

Pressure Sensor

Pressure sensor

<Ref. to VDC(diag)-103, DTC C0074 PRESSURE SEN-
SOR, Diagnostic Procedure with Diagnostic Trouble Code
(DTC).>

C0075

2510H
2520H

Reverse Signal

Abnormal reverse sig-
nal

<Ref. to VDC(diag)-104, DTC C0075 REVERSE SIGNAL,
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

C0076

2610H
2620H

Clutch Signal

Abnormal clutch signal

<Ref. to VDC(diag)-106, DTC C0076 CLUTCH SIGNAL,
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

C0081

2201H
2202H

System Failure

System malfunction

<Ref. to VDC(diag)-109, DTC C0081 SYSTEM FAILURE,
Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

DTC

Detailed

code

Item

Content of diagnosis

Reference

VDC(diag)-53

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

12.Diagnostic Procedure with Diagnostic Trouble Code (DTC)

A: DTC C0021 FRONT RIGHT ABS SENSOR CIRCUIT OPEN OR SHORT

NOTE:

For the diagnostic procedure, refer to “DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR

SHORT”. <Ref. to VDC(diag)-54, DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT, Di-

agnostic Procedure with Diagnostic Trouble Code (DTC).>

B: DTC C0023 FRONT LEFT ABS SENSOR CIRCUIT OPEN OR SHORT

NOTE:

For the diagnostic procedure, refer to “DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR

SHORT”. <Ref. to VDC(diag)-54, DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT, Di-

agnostic Procedure with Diagnostic Trouble Code (DTC).>

C: DTC C0025 REAR RIGHT ABS SENSOR CIRCUIT OPEN OR SHORT

NOTE:

For the diagnostic procedure, refer to “DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR

SHORT”. <Ref. to VDC(diag)-54, DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT, Di-

agnostic Procedure with Diagnostic Trouble Code (DTC).>

VDC(diag)-54

Diagnostic Procedure with Diagnostic Trouble Code (DTC)

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

D: DTC C0027 REAR LEFT ABS SENSOR CIRCUIT OPEN OR SHORT

DTC DETECTING CONDITION:

• Defective ABS wheel speed sensor (broken wire, input voltage too high)

• Defective harness connector

TROUBLE SYMPTOM:

• ABS does not operate.

• VDC does not operate.

WIRING DIAGRAM:

Vehicle Dynamics Control System <Ref. to WI-67, Vehicle Dynamics Control System.>

VDC00529

4

3

1

26

27

2

25

B98

R72

R2

B99

R3

E

2

4

1

3

R73

B6

B15

R73

R72

1

2

6

5

B310

2

1

2

1

2

1

B15

B6

B98

B99

VDCCM & H/U

2 1

B310

4 5 6 7 8 9

26 27 28 29 30

2 3

1

31 32 33 34 35 36

10 11

14 15 16 17 18 19

37 38 39 40

12 13

41 42 43 44 45 46

20 21

23 24

22

25

2 3 4 5

6 7 8 9

11 12 13 14

17 18 19 20

1

10

15 16

1 2

3 4 5

6 7 8 9 10 11 12

TWISTED P

AIR LINE

TWISTED P

AIR LINE

TWISTED P

AIR LINE

TWISTED P

AIR LINE

TWISTED P

AIR LINE

TWISTED P

AIR LINE

FRONT ABS

WHEEL SPEED

SENSOR LH

FRONT ABS

WHEEL SPEED

SENSOR RH

REAR ABS

WHEEL SPEED

SENSOR LH

REAR ABS

WHEEL SPEED

SENSOR RH