Subaru Legacy III (2000-2003 year). Manual — part 741

VDC-32

VDC

VDC OFF SWITCH

C: INSPECTION

Check continuity between VDC off switch termi-
nals.

If NG, replace VDC off switch.

Switch position

Tester connection

Specified condition

OFF

6 — 5

More than 1 M

Ω

ON

6 — 5

Less than 1

Ω

VDC00103

1
3

4

5

6

2

Off switch side

VDC (DIAGNOSTICS)

VDC

Page

1.

Basic Diagnostic Procedure . . . . . . . . . . . . . . . . . . 2

2.

Check List for Interview. . . . . . . . . . . . . . . . . . . ...6

3.

General Description . . . . . . . . . . . . . . . . . . . . . 9

4.

Electrical Components Location. . . . . . . . . . . . . . . . 11

5.

Control Module I/O Signal . . . . . . . . . . . . . . . . . . .13

6.

VDCCM Connector Cover . . . . . . . . . . . . . . . . . . .19

7.

Subaru Select Monitor. . . . . . . . . . . . . . . . . . . ...20

8.

Read Diagnostic Trouble Code (DTC) . . . . . . . . . . . . . ..23

9.

Inspection Mode. . . . . . . . . . . . . . . . . . . . . . 24

10.

Clear Memory Mode. . . . . . . . . . . . . . . . . . . . ..25

11.

Warning Light Illumination Pattern . . . . . . . . . . . . . . . 26

12.

List of Diagnostic Trouble Code (DTC) . . . . . . . . . . . . . .27

13.

Diagnostics Chart with Diagnosis Connector . . . . . . . . . . . 33

14.

Diagnostics Chart with Select Monitor . . . . . . . . . . . . . 130

15.

General Diagnostic Table. . . . . . . . . . . . . . . . . . 275

VDC-2

VDC (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

1. Basic Diagnostic Procedure

A: PROCEDURE

1. WITHOUT SUBARU SELECT MONITOR

Step

Value

Yes

No

1

CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-

ble occurred using interview checklist.
<Ref. to VDC-6, Check List for Interview.>

2) Before performing diagnosis, inspect unit

which might influence the VDC problem.
<Ref. to VDC-9, INSPECTION, General
Description.>
Is unit that might influence the VDC prob-
lem normal?

Normal

Go to step 2.

Repair or replace
each unit.

2

CHECK INDICATION OF DIAGNOSTIC
TROUBLE CODE (DTC).
Calling up diagnostic trouble code (DTC).
<Ref. to VDC-23, WITHOUT SUBARU
SELECT MONITOR, OPERATION, Read
Diagnostic Trouble Code (DTC).>
Is diagnostic trouble code (DTC) readable?

Can be read.

Go to step 3.

Inspect using diag-
nostic chart for
warning light fail-
ure. <Ref. to VDC-
33, ABS WARN-
ING LIGHT, VDC
WARNING LIGHT,
VDC OPERAT-
ING INDICATOR
LIGHT OR VDC
OFF INDICATOR
LIGHT DOES
NOT COME ON.,
Diagnostics Chart
with Diagnosis
Connector.>

NOTE:
Call up diagnostic
trouble code
(DTC) again after
inspecting warning
light. <Ref. to
VDC-23, WITH-
OUT SUBARU
SELECT MONI-
TOR, OPERA-
TION, Read
Diagnostic Trou-
ble Code (DTC).>

3

CHECK DIAGNOSTIC TROUBLE CODE
(DTC).
Is only the start code issued?

NOTE:

Record all diagnostic trouble codes (DTCs).

Only start code indicated.

Go to step 4.

Go to step 5.

VDC-3

VDC (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

CAUTION:
Remove foreign matter (dust, water, etc.) from the VDCCM connector during removal and installation.

NOTE:
• To check harness for broken wires or short circuits, shake it while holding it or the connector.
• When ABS and/or VDC warning light illuminates, read and record diagnostic trouble code (DTC) indicated
by ABS warning light.

4

PERFORM THE GENERAL DIAGNOSTICS.
1) Inspect using “General Diagnostics Table”.

<Ref. to VDC-275, General Diagnostic
Table.>

2) Perform the clear memory mode. <Ref. to

VDC-25, WITHOUT SUBARU SELECT
MONITOR, OPERATION, Clear Memory
Mode.>

3) Perform the inspection mode. <Ref. to

VDC-24, Inspection Mode.>
Calling up the diagnostic trouble code
(DTC). <Ref. to VDC-23, WITHOUT SUB-
ARU SELECT MONITOR, OPERATION,
Read Diagnostic Trouble Code (DTC).>
Is only the start code issued?

Only start code indicated.

Complete the
diagnosis.

Go to step 5.

5

PERFORM THE DIAGNOSIS.
1) Inspect using “Diagnostics Chart with Diag-

nostic Connector”.<Ref. to VDC-33, Diag-
nostics Chart with Diagnosis Connector.>

NOTE:

For diagnostic trouble code (DTC) list, refer to
“List of Diagnostic Trouble Code (DTC)”. <Ref.
to VDC-27, WITHOUT SUBARU SELECT
MONITOR, LIST, List of Diagnostic Trouble
Code (DTC).>

2) Repair trouble cause.
3) Perform the clear memory mode. <Ref. to

VDC-25, WITHOUT SUBARU SELECT
MONITOR, OPERATION, Clear Memory
Mode.>

4) Perform the inspection mode. <Ref. to

VDC-24, Inspection Mode.>

5) Calling up the diagnostic trouble code

(DTC). <Ref. to VDC-23, WITHOUT SUB-
ARU SELECT MONITOR, OPERATION,
Read Diagnostic Trouble Code (DTC).>
Is only the start code issued?

Only start code indicated.

Complete the
diagnosis.

Inspect using
“Diagnostics Chart
with Diagnostic
Connector”. <Ref.
to VDC-33, Diag-
nostics Chart with
Diagnosis Con-
nector.>

Step

Value

Yes

No