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