Subaru Legacy III (2000-2003 year). Manual — part 700

ABS-18

ABS (DIAGNOSTICS)

SUBARU SELECT MONITOR

5. FREEZE FRAME DATA

NOTE:
• Data stored at the time of trouble occurrence is shown on display.
• Each time trouble occurs, the latest information is stored in the freeze frame data in memory.
• If freeze frame data is not properly stored in memory (due to a drop in ABSCM power supply, etc.), a DTC,
preceded by a question mark “?”, appears on the select monitor display. This shows it may be an unreliable
reading.
• In case of no trouble code, the initial value of freeze frame data will be displayed.

6. ANALOG DATA ARE DISPLAYED.

7. ON/OFF DATA ARE DISPLAYED.

Display screen

Contents to be monitored

Initial value

FR wheel speed

Wheel speed detected by the Front Right ABS sensor is displayed in
km/h or mile/h.

255 km/h [158 mile/h]

FL wheel speed

Wheel speed detected by the Front Left ABS sensor is displayed in km/
h or mile/h.

↑

RR wheel speed

Wheel speed detected by the Rear Right ABS sensor is displayed in
km/h or mile/h.

↑

RL wheel speed

Wheel speed detected by the Rear Left ABS sensor is displayed in km/
h or mile/h.

↑

ABSCM power voltage

Power (in volts) supplied to ABSCM&H/U appears on the select monitor
display.

18 V

G sensor output voltage

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

5 V

Motor relay monitor

Motor relay operation monitor signal

ON

Stop light switch

Stop light switch signal

OFF

ABS signal to TCM

ABS operation signal from ABS control module to TCM

OFF

ABS-AT control

ABS operation signal from ABS control module to TCM

OFF

ABS operation signal

ABS operation signal

ON

Display screen

Contents to be monitored

FR wheel speed

Wheel speed detected by the Front Right
ABS sensor is displayed in km/h or mile/
h.

FL wheel speed

Wheel speed detected by the Front Left
ABS sensor is displayed in km/h or mile/
h.

RR wheel speed

Wheel speed detected by the Rear Right
ABS sensor is displayed in km/h or mile/
h.

RL wheel speed

Wheel speed detected by the Rear Left
ABS sensor is displayed in km/h or mile/
h.

Stop light switch

Stop light switch monitor voltage is dis-
played.

G sensor output
voltage

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

Display screen

Contents to be monitored

Stop light switch

Stop light switch signal

Valve relay signal

Valve relay signal

Motor relay signal

Motor relay signal

ABS signal to TCM

ABS operation signal from ABS con-
trol module to TCM

ABS warning light

ABS warning light

Valve relay monitor

Valve relay operation monitor signal

Motor relay monitor

Motor relay operation monitor signal

CCM signal

ABS operation signal from ABS con-
trol module to TCM

ABS-19

ABS (DIAGNOSTICS)

READ DIAGNOSTIC TROUBLE CODE (DTC)

7. 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 (DTC) will be shown in order of the last in-
formation first.
These repeat for a maximum of 3 minutes.

NOTE:
• When there are no diagnostic trouble codes (DTC) in memory, only the start code (11) is shown.
• When on-board diagnosis of the ABS 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.)

(1) Diagnosis connector

(2) Diagnosis terminal

(3) 8 terminal

(4) 5 terminal

( 1 )

( 2 )

( 3 )

( 4 )

ABS00291

Example of DTC indication

DTC: 21

DTC: 22,31

DTC: 21

Start code

Start code

ABS00116

DTC: 22

DTC: 31

DTC: 21

Start code

ON

1.2 sec

1.2 sec

1.0 sec

1.2 sec

0.3 sec

0.3 sec

1

1

1

2

2

3

1

1

1

1

2

1

1

1

2

1

1.0 sec

OFF

ON

OFF

0.3 sec

ABS-20

ABS (DIAGNOSTICS)

READ DIAGNOSTIC TROUBLE CODE (DTC)

2. WITH SUBARU SELECT MONITOR

Refer to SUBARU SELECT MONITOR for information about how to obtain and understand diagnostic trouble
codes (DTC). <Ref. to ABS-16, Subaru Select Monitor.>

ABS-21

ABS (DIAGNOSTICS)

INSPECTION MODE

8. Inspection Mode

A: OPERATION

Reproduce the condition under which the problem
has occurred as much as possible.
Drive the vehicle at a speed more than 40 km/h (25
MPH) for at least one minute.