Subaru Legacy III (2000-2003 year). Service 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.
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