Subaru Legacy III (2000-2003 year). Manual - part 747

VDC-24

VDC (DIAGNOSTICS)

INSPECTION MODE

9. Inspection Mode

A: OPERATION

Reproduce the condition under which the problem
has occurred as much as possible.
Drive the vehicle at least ten minutes.

NOTE:
Make sure vehicle does not pull to one side during
normal driving.

VDC-25

VDC (DIAGNOSTICS)

CLEAR MEMORY MODE

10.Clear Memory Mode

A: OPERATION

1. WITHOUT SUBARU SELECT MONITOR

1) After calling up a diagnostic trouble code (DTC),
disconnect diagnosis connector terminal 8 from di-
agnosis terminal.

2) Repeat 3 times within approx. 12 seconds; con-
necting and disconnecting terminal 8 and diagnosis
terminal for at least 0.2 seconds each time.

NOTE:
After diagnostics is completed, make sure to clear memory. Make sure only start code (11) is shown after
memory is cleared.

2. WITH SUBARU SELECT MONITOR

Refer to SUBARU SELECT MONITOR for informa-
tion about how to clear diagnostic trouble codes
(DTCs). <Ref. to VDC-20, Subaru Select Monitor.>

(1) Diagnosis connector

(2) Diagnosis terminal

(3) 8 terminal

(4) 5 terminal

( 1 )

( 2 )

( 3 )

( 4 )

VDC00136

VDC00138

0.2 sec
or more

0.2 sec or more

GND(Low level)

1.5 sec

12 sec or less

Terminal 8

ABS warning lamp

Diagnostic trouble code (DTC) indication mode

Memory erase mode

GND open (High level)

VDC-26

VDC (DIAGNOSTICS)

WARNING LIGHT ILLUMINATION PATTERN

11.Warning Light Illumination Pattern

A: INSPECTION

1) When the warning and/or indicator lights do not
illuminate in accordance with this illumination pat-
tern, there must be an electrical malfunction.
2) When the warning and/or indicator lights remain
constantly OFF, repair the warning and/or indicator
lights circuit or diagnosis circuit. <Ref. to VDC-33,
ABS WARNING LIGHT, VDC WARNING LIGHT,
VDC OPERATING INDICATOR LIGHT OR VDC
OFF INDICATOR LIGHT DOES NOT COME ON.,
Diagnostics Chart with Diagnosis Connector.>

NOTE:
• Even though the ABS warning light does not go
out 1.5 seconds after it illuminates, the VDC sys-
tem operates normally when the warning light goes
out while driving at approximately 12 km/h (7
MPH). However, the Anti-lock brakes do not work
while the ABS warning light is illuminated.
• It may take a few minutes for the VDC OFF indi-
cator light to go out when the vehicle is exposed for
some time in a low temperature area. This is not a
problem because of low engine coolant tempera-
tures.
• If a vehicle wheel is stuck or free-spinning for ap-
proximately 1 minute, power transfer fluctuation to
the remaining wheels will occur. Power transfer
conditions will differ from those occurring during

normal vehicle operation. The ABS sensor will de-
tect this condition. The ABS and VDC warning
lights will illuminate. If the vehicle is operated with
the four wheels lifted off the ground or with the four
wheels placed on rollers, the VDCCM will detect a
problem with the speed sensor and the ABS and
VDC warning lights may illuminate. In this case,
there is no abnormality. Clear the diagnostic code
from memory.
• When the engine is started and vehicle move-
ment begins, the VDCH/U motor pump and sole-
noid valve will operate for a few seconds. This
permits checking of VDC function. Normal motor
pump and solenoid valve operational noise will be
heard. Normal brake pedal kick back will be felt
when the brake pedal is depressed. In this case,
there is no abnormality.

VDC00139

Ignition key switch

ABS warning light

OFF

Goes out.

Illuminates.

VDC warning light

Goes out.

Illuminates.

1.5 s

VDC operating
indicator light

Goes out.