Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. 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”?

Go to step

2.

Perform the self-
diagnosis of com-
bination meter.
<Ref. to IDI-5,
SELF-DIAGNO-
SIS, INSPEC-
TION,
Combination Meter
System.>

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?

Go to step

3.

Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>

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?

Perform the diag-
nosis according to
DTC for LAN sys-
tem. <Ref. to
LAN(diag)-32, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step

4.

4

CHECK COMBINATION METER.
Check the combination meter. <Ref. to IDI-5,
INSPECTION, Combination Meter System.>

Is combination meter OK?

Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>

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”?

Go to step

2.

Perform the self-
diagnosis of com-
bination meter.
<Ref. to IDI-5,
SELF-DIAGNO-
SIS, INSPEC-
TION,
Combination Meter
System.>

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?

Go to step

3.

Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>

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?

Perform the diag-
nosis according to
DTC for LAN sys-
tem. <Ref. to
LAN(diag)-32, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step

4.

4

CHECK COMBINATION METER.
Check the combination meter. <Ref. to IDI-5,
INSPECTION, Combination Meter System.>

Is combination meter OK?

Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>

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?

Go to step

2.

Perform the self-
diagnosis of com-
bination meter.
<Ref. to IDI-5,
SELF-DIAGNO-
SIS, INSPEC-
TION,
Combination Meter
System.>

2

READ DTC.
Read the DTC. <Ref. to VDC(diag)-25, Read
Diagnostic Trouble Code (DTC).>

Is DTC displayed?

Perform the diag-
nosis according to
DTC. <Ref. to
VDC(diag)-48, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step

3.

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?

Perform the diag-
nosis according to
DTC for LAN sys-
tem. <Ref. to
LAN(diag)-32, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step

4.

4

CHECK COMBINATION METER.
Check the combination meter. <Ref. to IDI-5,
INSPECTION, Combination Meter System.>

Is combination meter OK?

Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>

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?

Perform the diag-
nosis according to
DTC. <Ref. to
VDC(diag)-48, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step

2.

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?

Perform the diag-
nosis according to
DTC for LAN sys-
tem. <Ref. to
LAN(diag)-32, List
of Diagnostic Trou-
ble Code (DTC).>

Go to step

3.

3

CHECK COMBINATION METER.
Check the combination meter. <Ref. to IDI-5,
INSPECTION, Combination Meter System.>

Is combination meter OK?

Replace the
VDCCM only.
<Ref. to VDC-12,
REPLACEMENT,
VDC Control Mod-
ule and Hydraulic
Control Unit
(VDCCM&H/U).>

Replace the com-
bination meter.
<Ref. to IDI-16,
Combination
Meter.>