Subaru Legacy IV (2008 year). Manual - part 927

VDC(diag)-23

Clear Memory Mode

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

9. Clear Memory Mode

A: OPERATION

1) On the «Main Menu» display, select the {Each
System Check}.
2) On the «System Selection Menu» display, select
the {Brake Control System}.
3) Click the [OK] button after the {VDC} is dis-
played.
4) On the «Brake Control Diagnosis» display, se-
lect the {Clearing Memory}.
5) When the “Clear Memory?” is shown on the
screen, click the [Yes] button.
6) When “Done” and “Turn off the ignition switch.”
are shown on the display screen, turn the ignition
switch to OFF.

NOTE:
For detailed operation procedure, refer to the “PC
application help for Subaru Select Monitor”.

VDC(diag)-24

Warning Light Illumination Pattern

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

10.Warning Light Illumination Pattern

A: INSPECTION

(1)

Ignition switch

(8)

2 seconds

(12)

Brake warning light (EBD warning 
light)

(2)

OFF

(9)

VDC indicator light

(3)

ON

(10)

VDC warning light and VDC OFF 
indicator light

(13)

Parking brake

(4)

Engine start

(14)

Released

(5)

ABS warning light

(11)

Several seconds (depending on 
engine coolant temperature)

(6)

Light OFF

(7)

Light ON

VDC00214

(2)

(6)

(6)

(7)

(6)

(6)

(7)

(8)

(6)

(6)

(7)

(11)

(3)

(3)

(4)

(1)

(5)

(9)

(10)

(6)

(7)

(12)

(14)

(13)

VDC(diag)-25

Warning Light Illumination Pattern

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

1) When warning lights or indicator lights do not il-
luminate in accordance with this illumination pat-
tern, there must be an electrical malfunction.
2) When warning lights or indicator lights remain
constantly OFF, check the combination meter cir-
cuit or CAN communication circuit. <Ref. to
VDC(diag)-26, VDC WARNING LIGHT, VDC OFF
INDICATOR LIGHT AND VDC INDICATOR LIGHT
DO NOT COME ON, Warning Light Illumination
Pattern.>
3) When ABS warning light does not go off, check
the combination meter circuit. <Ref. to VDC(diag)-
29, ABS WARNING LIGHT DOES NOT GO OFF,
Warning Light Illumination Pattern.>
4) When the VDC indicator light, VDC warning light
and VDC OFF indicator light do not go off, check
the combination meter circuit or CAN communica-
tion circuit. <Ref. to VDC(diag)-30, VDC INDICA-
TOR LIGHT DOES NOT GO OFF, Warning Light
Illumination Pattern.> <Ref. to VDC(diag)-31, VDC
WARNING LIGHT AND VDC OFF INDICATOR
LIGHT DO NOT GO OFF, Warning Light Illumina-
tion Pattern.>

NOTE:
• Even though the ABS warning light does not go
off after 2 seconds from ABS warning light illumina-
tion, the ABS system operates normally when the
warning light goes off while driving at approximate-
ly 12 km/h (7 MPH). However, the ABS system
does not work while the ABS warning light is illumi-
nated.
• It may take several minutes before VDC warning
light and VDC OFF indicator light goes off if the ve-
hicle is parked under low temperature for a speci-
fied time. This is not defective because it is resulted
from low engine coolant temperature.
• With the vehicle jack-up/lift-up or set on free roll-
ers, when the wheels lock or spin after starting the
engine, ABS warning light, VDC warning light and
VDC OFF indicator light may illuminate because
VDCCM&H/U detects the abnormal conditions
from ABS wheel speed sensors. In this case, this is
not a malfunction. Perform the Clear Memory
Mode.

VDC(diag)-26

Warning Light Illumination Pattern

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

B: VDC WARNING LIGHT, VDC OFF INDICATOR LIGHT AND VDC INDICATOR 

LIGHT DO NOT COME ON

DETECTING CONDITION:
• Defective combination meter
• Defective CAN communication
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), VDC indicator light, VDC warning light and VDC OFF
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.

2

CHECK VDCCM.
When the engine does not start, display the cur-
rent data of VDCCM using Subaru Select Mon-
itor.

Is “VDC Warning Light” output 
set to “ON”?

Go to step 3.

Replace the 
VDCCM only.

3

CHECK LAN SYSTEM.
Perform the diagnosis for LAN system. <Ref. to 
LAN(diag)-27, OPERATION, Read Diagnostic 
Trouble Code (DTC).>

Is there any fault in LAN sys-
tem?

Perform the diag-
nosis according to 
DTC for LAN sys-
tem.

Go to step 4.

4

CHECK COMBINATION METER.
Check the combination meter.

Is combination meter OK?

Replace the 
VDCCM only.

Repair the combi-
nation meter 
assembly.