Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service 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
C0063
1BB8H
1BC0H
1BC1H
1BD0H
Normal Closing
Valve 1 Malfunction
Secondary suction
valve malfunction in
VDCCM&H/U
C0064
1CB8H
1CC0H
1CC1H
1CD0H
Normal Closing
Valve 2 Malfunction
Primary suction valve
malfunction in
VDCCM&H/U
C0071
2130H
Steering Angle Sen-
sor Offset Is Too Big
Excessive steering
angle sensor output off-
set
2134H
Change Range of
Steering Angle Sen-
sor Is Too Big
Excessive variation
amount of steering
angle sensor output
212EH
2132H
2136H
2138H
213CH
2150H
2151H
2152H
2153H
2154H
2155H
2156H
2157H
2158H
2159H
215AH
Steer Angle Sensor
Op
Steering angle sensor
output
2104H
Steering Angle Sen-
sor Malfunction
Steering angle sensor
power supply malfunc-
tion
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
1EB6H
Voltage Inputted to
Yaw Rate Sensor
Exceeds Specifica-
tion
Yaw rate sensor power
supply/output
1E30H
Change Range of
Yaw Rate Sensor
Signal Is Too Big
Excessive variation
amount of yaw rate sen-
sor output
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
1EB9H
1ED6H
Sensor Type Abnor-
mal
Different yaw rate sen-
sor specification
C0073
1D46H
1D47H
Lateral G Sensor
Offset Is Too Big
Excessive amount of
lateral G sensor output
offset
1D44H
1D45H
Abnormal Lateral G
Sensor Output
Lateral G sensor output
1D49H
Excessive Lateral G
Sensor Signal
Excessive lateral G
sensor output
C0074
1F4EH
1F4FH
1FB1H
1FC0H
Pressure Sensor
Pressure sensor
C0075
2510H
2520H
Reverse Signal
Abnormal reverse sig-
nal
C0076
2610H
2620H
Clutch Signal
Abnormal clutch signal
C0081
2201H
2202H
System Failure
System malfunction
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-
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
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