Subaru Legacy III (2000-2003 year). Manual - part 746

VDC-20

VDC (DIAGNOSTICS)

SUBARU SELECT MONITOR

7. Subaru Select Monitor

A: OPERATION

1. READ DIAGNOSTIC TROUBLE CODE

1) Prepare Subaru Select Monitor kit.

2) Connect diagnosis cable to Subaru Select Mon-
itor.
3) Insert cartridge into Subaru Select Monitor.
<Ref. to VDC-10, SPECIAL TOOLS, PREPARA-
TION TOOL, General Description.>

4) Connect Subaru Select Monitor to data link con-
nector.

(1) Data link connector located in the lower por-
tion of the instrument panel (on the driver's
side).

(2) Connect diagnosis cable to data link con-
nector.

5) Turn ignition switch to ON (engine OFF) and
Subaru Select Monitor switch to ON.

6) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
7) On the «System Selection Menu» display
screen, select the {Brake Control System} and
press the [YES] key.
8) Press the [YES] key after displayed the informa-
tion of engine type.
9) On the «Brake Diagnosis» display screen, select
the {Diagnostic Code(s) Display} and press the
[YES] key.
10) On the  «Diagnostic Code(s) Display» display
screen, select the {Current Diagnostic Code(s)} or
{History Diagnostic Code(s)} and press the [YES]
key.

NOTE:
• For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.
• For detailed concerning diagnostic trouble
codes, refer to the DIAGNOSTIC TROUBLE CODE
LIST.
<Ref. to VDC-27, List of Diagnostic Trouble Code
(DTC).>
• A maximum of 3 trouble codes are displayed in
order of occurrence.

*a* refers to the troubles in order of occurrence
(Latest, Old, Older).

(1) Data link connector

VDC00132

VDC00133

VDC00134

( 1 )

(1) Power switch

VDC00135

( 1 )

21  Front  Right  ABS  Sensor  Circuit
       Open  or  Shorted  Battery

( *a* )

VDC00154

VDC-21

VDC (DIAGNOSTICS)

SUBARU SELECT MONITOR

2. READ CURRENT DATA

1) On the «Main Menu» display screen, select
{Each System Check} and press the «YES» key.

2) On the «System Selection Menu» display
screen, select {Brake Control System} and press
«YES» key.
3) Press the «YES» key after the VDC type is dis-
played.
4) On the «Brake Control Diagnosis» display
screen, select {Current Data Display & Save} and
press the «YES» key.
5) On the «Data Display Menu» display screen, se-
lect {Data Display} and press the «YES» key.
6) Using the scroll key, move the display screen up
or down until the desired data is shown.
• A list of the support data is shown in the following
table.

NOTE:
For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.

Display screen

Contents to be monitored

Latest

The most recent trouble code appears 
on the select monitor display.

Old

The second most recent trouble code 
appears on the select monitor display.

Older

The third most recent trouble code 
appears on the select monitor display.

Display screen

Contents to be monitored.

Unit of measure

FR wheel speed

Wheel speed detected by the Front Right ABS sensor is displayed.

km/h or MPH

FL wheel speed

Wheel speed detected by the Front Left ABS sensor is displayed.

km/h or MPH

RR wheel speed

Wheel speed detected by the Rear Right ABS sensor is displayed.

km/h or MPH

RL wheel speed

Wheel speed detected by the Rear Left ABS sensor is displayed.

km/h or MPH

Steering angle sensor

Steering wheel angle detected by the steering angle sensor is dis-
played.

deg

Yaw rate sensor

Vehicle's angular velocity detected by the yaw rate sensor is displayed.

deg/s

Lateral G sensor

Vehicle's lateral acceleration detected by the lateral G sensor is dis-
played.

V

Pressure sensor 1

Brake fluid pressure detected by the primary pressure sensor is dis-
played.

V

Pressure sensor 2

Brake fluid pressure detected by the secondary pressure sensor is dis-
played.

V

Longitudinal G sensor

Longitudinal G sensor is not equipped on vehicles after '00MY.
But longitudinal G sensor will remain on monitor and 0 V will be dis-
played.

V

ABS CM power voltage

Voltage supplied to VDCCM is displayed.

V

Torque driver requires

Engine torque requested by the driver is displayed.

N·m

Current torque

Current engine torque is displayed.

N·m

Valve relay signal

Drive condition of the valve relay is displayed.

ON or OFF

Motor relay signal

Drive condition of the motor relay is displayed.

ON or OFF

VDC OFF lamp

ON operation of the VDC OFF indicator lamp is displayed.

ON or OFF

Motor relay monitor

Operating condition of the motor relay is displayed.

High or Low

PW signal

Accelerator position signal is displayed.

1 or 0

AET signal

Engine control start signal is displayed.

OPEN or GND

AEB signal

Engine control signal is displayed.

OPEN or GND

AEC signal

Engine control signal is displayed.

OPEN or GND

EAM signal

Engine control command signal is displayed.

1 or 0

VDC-22

VDC (DIAGNOSTICS)

SUBARU SELECT MONITOR

3. CLEAR MEMORY MODE

1) On the «Main Menu» display screen, select {2.
Each System Check} and press the «YES» key.
2) On the «System Select Menu» display screen,
select {Brake System} and press the «YES» key.
3) Press the «YES» key after the engine type is dis-
played.

4) On the «Brake Control Diagnosis» display
screen, select {Clear Memory} and press the
«YES» key.
5) When `Done' and `turn ignition switch OFF' are
shown on the display screen, turn the Subaru Se-
lect Monitor and ignition switch to OFF.

NOTE:
For detailed operation procedure, refer to the SUB-
ARU SELECT MONITOR OPERATION MANUAL.

4. FUNCTION CHECK

Display screen

Contents to be monitored

Index No.

ABS sequence control mode

Perform ABS sequence control by operating 
valve and pump motor sequentially.

<Ref. to VDC-16, ABS Sequence Control.>

VDC check mode

Perform VDC sequence control by operating 
valve and pump motor sequentially.

<Ref. to VDC-19, VDC Sequence Control.>

Set mode St. r. A. Sen. N & 
Lat. G Sen. Op

Set both the neutral position of the steering 
angle sensor and the zero “0” point of the lateral 
G sensor. 

<Ref. to VDC-26, Steering Angle Sensor.>

VDC-23

VDC (DIAGNOSTICS)

READ DIAGNOSTIC TROUBLE CODE (DTC)

8. Read Diagnostic Trouble 

Code (DTC)

A: OPERATION

1. WITHOUT SUBARU SELECT MONITOR

1) Take out diagnosis connector from side of driv-
er's seat heater unit.

2) Turn ignition switch OFF.
3) Connect diagnosis connector terminal 8 to diag-
nosis terminal.
4) Turn ignition switch ON.
5) ABS warning light is set in the diagnostic mode
and blinks to identify diagnostic trouble code
(DTC).
6) After the start code (11) is shown, the diagnostic
trouble codes (DTCs) will be shown in order of the
last information first.
These repeat for a maximum of 5 minutes.

NOTE:
• When there are no diagnostic trouble codes
(DTCs) in memory, only the start code (11) is
shown.
• When on-board diagnosis of the VDC control
module detects a problem, the information (up to a
maximum of three) will be stored in the EEP ROM
as a diagnostic trouble code (DTC). When there
are more than three, the most recent three will be
stored. (Stored codes will stay in memory until they
are cleared.)

2. WITH SUBARU SELECT MONITOR

Refer to SUBARU SELECT MONITOR for informa-
tion about how to obtain and understand 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

VDC00137

ON

OFF

ON

OFF

1

1

1

2

2

1

1

1

1

1

2

2

1

1

1

3

1.2 sec

1.2 sec

1.2 sec

1.0 sec

1.0 sec

0.3 sec

0.3 sec

0.3 sec

DTC: 22,31

DTC: 21

DTC: 21

DTC: 22

DTC: 31

DTC: 21

Example of DTC indication

Start code

Start code

Start code