Subaru Legacy III (2000-2003 year). Manual - part 699

ABS-14

ABS (DIAGNOSTICS)

CONTROL MODULE I/O SIGNAL

B: SCHEMATIC

(1) ABS control module and hydrau-

lic control unit (ABSCM&H/U)

(10) Rear left inlet solenoid valve

(18) Stop light switch

(11) Rear left outlet solenoid valve

(19) Stop light

(2) ABS control module area

(12) Rear right inlet solenoid valve

(20) G sensor

(3) Valve relay

(13) Rear right outlet solenoid valve

(21) Front left ABS sensor

(4) Motor relay

(14) Transmission control module (only 

AT model)

(22) Front right ABS sensor

(5) Motor

(23) Rear left ABS sensor

(6) Front left inlet solenoid valve

(15) Diagnosis connector

(24) Rear right ABS sensor

(7) Front left outlet solenoid valve

(16) Data link connector

(25) Battery

(8) Front right inlet solenoid valve

(16) Data link connector

(26) IGN

(9) Front right outlet solenoid valve

(17) ABS warning light

ABS00289

( 1 )

( 2 )

( 3 )

( 4 )

( 5 )

( 6 )

( 7 )

( 8 )

( 9 )

(10)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(18)

(19)

(20)

(21)

(22)

(23)

(24)

(25)

(26)

ABS-15

ABS (DIAGNOSTICS)

CONTROL MODULE I/O SIGNAL

C: WAVEFORM

ABS00110

ABS sensor

Standard output 
voltage at 20 Hz:
0.12 – 1 V

Terminal No.

9 – 10

11 – 12

7 – 8

14 – 15

0

[V]

20 Hz

ABS-16

ABS (DIAGNOSTICS)

SUBARU SELECT MONITOR

6. Subaru Select Monitor

A: OPERATION

1. READ DIAGNOSTIC TROUBLE CODE 
(DTC)

1) Prepare Subaru Select Monitor kit.

2) Connect diagnosis cable to Subaru Select Mon-
itor.
3) Insert cartridge into Subaru Select Monitor.
<Ref. to ABS-9, 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 ABS type.
9) On the «ABS 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 LIST OF DIAGNOSTICS TROU-
BLE CODE. <Ref. to ABS-24, List of Diagnostics
Trouble Code (DTC).>  
• A maximum of 3 DTC are displayed in order of
occurrence.
• If a particular DTC is not properly stored in mem-
ory (due to a drop in ABSCM&H/U power supply,
etc.) when a problem occurs, the DTC, followed by
a question mark “?”, appears on the select monitor
display. This shows it may be an unreliable read-
ing.

(1)

Data link connector

ABS00111

ABS00112

ABS00290

( 1 )

(1)

Power switch

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.

Reference

A specified period of time proceeding 
trouble code appears on the select moni-
tor display.

ABS00114

( 1 )

ABS-17

ABS (DIAGNOSTICS)

SUBARU SELECT MONITOR

2. READ CURRENT DATA

1) On the «Main Menu» display screen, select the {Each System Check} and press the «YES» key.
2) On the «System Selection Menu» display screen, select the {Brake Control System} and press the «YES»
key.
3) Press the «YES» key after displayed the information of ABS type.
4) On the «Brake Control Diagnosis» display screen, select the {Current Data Display & Save} and press the
«YES» key.
5) On the «Data Display Menu» display screen, select the {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.

3. CLEAR MEMORY MODE

1) On the «Main Menu» display screen, select the
{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 displayed the infor-
mation of ABS type.
4) On the «Brake Control Diagnosis» display
screen, select the {Clear Memory} and press the
«YES» key.

5) When the “Done” and “turn ignition switch OFF”
are shown on the display screen, turn the Subaru
Select Monitor and ignition switch to OFF.

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

4. ABS SEQUENCE CONROL

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

Stop Light Switch

Stop light switch signal

ON or OFF

Stop Light Switch

Stop light switch monitor voltage is displayed.

V

G sensor output Signal

Refers to vehicle acceleration detecting by the analog G sensor. It 
appears on the select monitor display in volts.

V

Valve Relay Signal

Valve Relay Signal

ON or OFF

Motor Relay Signal

Motor Relay Signal

ON or OFF

ABS Signal to TCM

ABS operation signal from ABS control module to TCM

ON or OFF

ABS Warning Lamp

ON operation of the ABS warning light is displayed.

ON or OFF

Motor Relay Monitor

Operating condition of the motor relay is displayed.

ON or OFF

Valve Relay Monitor

Operating condition of the valve relay is displayed.

ON or OFF

CCM Signal

ABS operation signal from ABS control module to TCM

ON or OFF

Display screen

Contents to be monitored

Clear memory?

Function of clearing trouble code.

Display 

screen

Contents to be monitored

Index No.

ABS 
sequence 
control

Perform ABS sequence 
control by operating valve 
and pump motor sequen-
tially.

<Ref. to ABS-9, 
ABS Sequence 
Control.>