Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 537
VDC(diag)-47
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
3
CHECK GROUND SHORT OF HARNESS.
Measure the resistance between VDCCM&H/U
connector and chassis ground.
Connector & terminal
(B310) No. 31 — Chassis ground:
Is the resistance 1 MΩ or
more?
Repair the harness
between the
VDCCM&H/U and
VDC OFF switch
connectors.
4
CHECK HARNESS.
Measure the resistance of harness between
VDC OFF switch connector and chassis
ground.
Connector & terminal
(B318) No. 3 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the harness
between the VDC
OFF switch con-
nector and chassis
ground.
5
CHECK VDC OFF SWITCH.
Check the VDC OFF switch. <Ref. to VDC-29,
INSPECTION, VDC OFF Switch.>
Is the VDC OFF switch normal? Go to step
Replace the VDC
OFF switch. <Ref.
to VDC-29, VDC
OFF Switch.>
6
CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. <Ref. to
LAN(diag)-2, Basic Diagnostic Procedure.>
Is there any fault in LAN sys-
tem?
7
CHECK COMBINATION METER.
Check the combination meter. <Ref. to IDI-5,
INSPECTION, Combination Meter System.>
Is combination meter OK?
Replace the com-
bination meter.
<Ref. to IDI-16,
Combination
Meter.>
Step
Check
Yes
No
VDC(diag)-48
List of Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
11.List of Diagnostic Trouble Code (DTC)
A: LIST
DTC
Detailed
code
Item
Content of diagnosis
Reference
C0021
07B1H
07B2H
07C0H
Front Right ABS
Sensor Circuit Open
or Short
Open/high input of front
ABS wheel speed sen-
sor RH
C0022
0720H
072FH
0736H
0737H
0738H
073AH
073CH
Front Right ABS
Sensor Signal
Front ABS wheel speed
sensor RH signal mal-
function
C0023
06B1H
06B2H
06C0H
Front Left ABS Sen-
sor Circuit Open or
Short
Open/high input of front
ABS wheel speed sen-
sor LH
C0024
0620H
062FH
0636H
0637H
0638H
063AH
063CH
Front Left ABS Sen-
sor Signal
Front ABS wheel speed
sensor LH signal mal-
function
C0025
09B1H
09B2H
09C0H
Rear Right ABS
Sensor Circuit Open
or Short
Open/high input of rear
ABS wheel speed sen-
sor RH
C0026
0920H
092FH
0936H
0937H
0938H
093AH
093CH
Rear Right ABS
Sensor Signal
Rear ABS wheel speed
sensor RH signal mal-
function
C0027
08B1H
08B2H
08C0H
Rear Left ABS Sen-
sor Circuit Open or
Short
Open/high input of rear
ABS wheel speed sen-
sor LH
C0028
0820H
082FH
0836H
0837H
0838H
083AH
083CH
Rear Left ABS Sen-
sor Signal
Rear ABS wheel speed
sensor LH signal mal-
function
C0029
0A10H
0A41H
0A4BH
0A4DH
0A52H
0A56H
0A60H
Any of Wheel Sen-
sors Signal
ABS wheel speed sen-
sor signal malfunction
in one of four wheels
C0031
0DB8H
0DC0H
0DC1H
0DD0H
FR Hold Valve Mal-
function
Front inlet solenoid
valve RH malfunction in
VDCCM&H/U
VDC(diag)-49
List of Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
C0032
0EB8H
0EC0H
0EC1H
0ED0H
FR Pressure Reduc-
ing Valve Malfunction
Front outlet solenoid
valve RH malfunction in
VDCCM&H/U
C0033
0BB8H
0BC0H
0BC1H
0BD0H
FL Hold Valve Mal-
function
Front inlet solenoid
valve LH malfunction in
VDCCM&H/U
C0034
0CB8H
0CC0H
0CC1H
0CD0H
FL Pressure Reduc-
ing Valve Malfunction
Front outlet solenoid
valve LH malfunction in
VDCCM&H/U
C0035
11B8H
11C0H
11C1H
11D0H
RR Hold Valve Mal-
function
Rear inlet solenoid
valve RH malfunction in
VDCCM&H/U
C0036
12B8H
12C0H
12C1H
12D0H
RR Pressure Reduc-
ing Valve Malfunction
Rear outlet solenoid
valve RH malfunction in
VDCCM&H/U
C0037
0FB8H
0FC0H
0FC1H
0FD0H
RL Hold Valve Mal-
function
Rear inlet solenoid
valve LH malfunction in
VDCCM&H/U
C0038
10B8H
10C0H
10C1H
10D0H
RL Pressure Reduc-
ing Valve Malfunction
Rear outlet solenoid
valve LH malfunction in
VDCCM&H/U
C0039
0FB5H
11B5H
Any One of Four
Solenoid Valves
Solenoid valve malfunc-
tion in one of four
wheels
C0041
—
ECM
VDC control module
malfunction
<Ref. to VDC(diag)-64, DTC C0041 ECM, Diagnostic Proce-
dure with Diagnostic Trouble Code (DTC).>
1630H
1645H
16C0H
Parameter Selection
Error
VDC control module
parameter selection fail-
ure
C0042
0316H
031CH
0322H
0324H
Power Supply Volt-
age Failure
Power voltage malfunc-
tion
C0045
2922H
2932H
Incorrect VDC Con-
trol Module Specifi-
cations
Different VDC control
module specification
DTC
Detailed
code
Item
Content of diagnosis
Reference
VDC(diag)-50
List of Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
C0047
1504H
1505H
1506H
1507H
1508H
150EH
1512H
1514H
1518H
1519H
151AH
151DH
151EH
151FH
1520H
1531H
1540H
15C0H
CAN Communication
Improper CAN commu-
nication
C0051
021FH
0220H
0221H
0280H
0281H
02B0H
02B1H
02C0H
Valve Relay
Valve Relay
C0052
0562H
0574H
0580H
Motor and Motor
Relay Off Failure
Motor/motor relay OFF
malfunction
05A0H
Motor and Motor
Relay On Failure
Motor/motor relay ON
malfunction
0560H
Motor Malfunction
Motor
C0054
04B0H
BLS Circuit Open
BLS open circuit
043CH
BLS On Malfunction
BLS ON malfunction
04C1H
BLS Off Malfunction
BLS OFF Malfunction
C0056
1760H
1770H
1780H
G Sensor Signal
Abnormal longitudinal
G sensor output signal
C0057
2931H
ECM Communica-
tion Circuit
CAN communication
failure of engine control
module
2930H
ECM Control System
Coordinate control pro-
hibition of engine con-
trol module
C0061
19B8H
19C0H
19C1H
19D0H
Normal Opening
Valve 1 Malfunction
Secondary cut valve
malfunction in
VDCCM&H/U
DTC
Detailed
code
Item
Content of diagnosis
Reference
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