Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1997 1997 Service Manual 1997 LEGACY MANUAL SUPPLEMENT ABS 5.3I SYSTEM Diagnostics Section MSA5T9712A29600
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4-4d [TSOi1 BRAKES [ABS 5.31 TYPE]
5. Control Module I/O Signal
5. Control Module I/O Signal
1 . I/O SIGNAL VOLTAGE
ABS control module and
hydraulic control unit connector
Ell
30000000
00000
Connector switch
i
F49
1 21314 5 1 6 1 7 1 8 1 9 110 1 11 1 12 113 1 14 115
16 171819 20 2122
1 27128 129 130 1 31 1 23 24 25 26
84M1228A
NOTE :
* The terminal numbers in the ABS control module and
hydraulic control unit connector are as shown in the fig-
ure.
9 When the connector is removed from the ABSCM&H/U,
the connector switch closes the circuit between terminal
No. 21 and No . 23. The ABS warning light illuminates.
8
BRAKES [ABS 5.31 TYPE] ' [T501] 4-4d
5. Control Module I/O Signal
Terminal Input/Output signal
Contents No .
Measured value and measuring conditions
_)
ABS Front left wheel 9-10
sensor'2 Front right wheel 11-12 0 .12 - 1 V
(Wheel
Rear left wheel 7-8 (When it is 20 Hz .)
speed
sensor) Rear right wheel 14-15
Valve relay power supply 24-23 10 - 15 V when ignition switch is ON .
Motor relay power supply 25-23 10 - 15 V when ignition switch is ON .
Power supply 30-28 4 .75 - 5 .25 V
G sensor'2
(AWD model ground 28 -
only)
output 6-28 2 .3f0.2 V when vehicle is in horizontal position .
Less than 1 .5 V when the stop light is OFF and, 10 - 15 V
Stop light switch*1 2-23
when the stop light is ON.
Less than 1 .5 V during 1 .5 seconds when ignition switch is
ABS warning light`2 21-23
ON, and 10 - 15 V after 1 .5 seconds .
AT ABS signal'2 Less than 1 .5 V when the ABS control does not operate still
31-23
(AT model only) and more than 5 .5 V when ABS operates .
Less than 1 .5 V when the ABS control does not operate still
ABS operation signal monitor*2 3--23
and more than 5 .5 V when ABS operates .
Select Data is received . 20-23 Less than 1 .5 V when no data is received .
monitor'2 Data is sent . 5--23 4 .75 - 5 .25 V when no data is sent .
ABS Terminal No . 3 29-23 10 - 15 V when ignition switch is ON .
diagnosis
connector*2 Terminal No . 6 4-23 10 - 15 V when ignition switch is ON .
Power supply'1 1-23 10 - 15 V when ignition switch is ON .
Grounding line 23 -
Grounding line ~ 26
*1 : Measure the I/O signal voltage after removing the connector from the ABSCM&H/U terminal .
'2 : Measure the I/O signal voltage at connector (F2) or (Fi) .
9
4-4d [TSOZ] BRAKES [ABS 5.31 TYPE]
5. Control Module I/O Signal
2. I/O SIGNAL DIAGRAM
Ignition key switch
84101229A
10
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