Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 533
VDC(diag)-31
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
B: VDC WARNING LIGHT & VDC INDICATOR LIGHT, VDC OFF & VDC TRAC-
TION MODE INDICATOR LIGHT DO NOT COME ON
NOTE:
This diagnosis is applied to 6MT model.
DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), the VDC OFF & VDC traction mode indicator light,
and VDC warning light & VDC indicator light do not illuminate.
NOTE:
When the VDC OFF switch is pressed for 10 seconds or more, the VDC traction mode indicator light goes off,
and subsequent switch operations are not accepted. When turning the ignition switch from OFF to ON, the
OFF operation enabled status is restored.
Step
Check
Yes
No
1
CHECK OTHER INDICATOR LIGHT.
Turn the ignition switch to ON.
Does other indicator light illumi-
nate soon after “ON”?
2
CHECK VDCCM.
When the engine does not start, display the cur-
rent data of VDCCM using Subaru Select Mon-
itor.
Is the «VDC Warning Light»
output ON?
3
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?
4
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.>
VDC(diag)-32
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
C: VDC WARNING LIGHT & VDC INDICATOR LIGHT, VDC OFF INDICATOR
LIGHT DO NOT COME ON
NOTE:
This diagnosis is applied to 5MT model.
DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), VDC OFF indicator light and VDC warning light &
VDC indicator light do not illuminate.
NOTE:
When pressing the VDC OFF switch for 10 seconds or more, the VDC OFF indicator light goes off and cannot
operate any more. When turning the ignition switch from OFF to ON, the OFF operation enabled status is re-
stored.
Step
Check
Yes
No
1
CHECK OTHER INDICATOR LIGHT.
Turn the ignition switch to ON.
Does other indicator light illumi-
nate soon after “ON”?
2
CHECK VDCCM.
When the engine does not start, display the cur-
rent data of VDCCM using Subaru Select Mon-
itor.
Is the «VDC Warning Light»
output ON?
3
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?
4
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.>
VDC(diag)-33
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
D: ABS WARNING LIGHT DOES NOT COME ON
DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), ABS warning light and hill start assist warning light
do not come on.
E: HILL START ASSIST WARNING LIGHT DOES NOT COME ON
For the diagnostic procedures, refer to “ABS WARNING LIGHT DOES NOT COME ON”. <Ref. to VDC(diag)-
33, ABS WARNING LIGHT DOES NOT COME ON, Warning Light Illumination Pattern.>
Step
Check
Yes
No
1
CHECK OTHER LIGHTS TURN ON.
Turn the ignition switch to ON. (engine OFF)
Do other warning lights illumi-
nate?
2
READ DTC.
Read the DTC. <Ref. to VDC(diag)-25, Read
Diagnostic Trouble Code (DTC).>
Is DTC displayed?
3
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?
4
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.>
VDC(diag)-34
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
F: ABS WARNING LIGHT DOES NOT GO OFF
DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
TROUBLE SYMPTOM:
When starting the engine, the ABS warning light is kept ON.
Step
Check
Yes
No
1
READ DTC.
Read the DTC. <Ref. to VDC(diag)-25, Read
Diagnostic Trouble Code (DTC).>
Is DTC displayed?
2
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?
3
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.>
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