1997 SUBARU LEGACY Service Repair Manual

height set clock gas type lock radio controls gas mileage

Page 1833 of 3342

SUBARU LEGACY 1997 Service Repair Manual B: SCHEMATIC
B6H0319
88
6-2DIAGNOSTICS
6. Security System

Page 1834 of 3342

SUBARU LEGACY 1997 Service Repair Manual C: CONTROL MODULE I/O SIGNAL
B6M0405
Content Terminal No.Measuring conditions and I/O signals
(Ignition switch ACC position)
Door lock/unlock switch1
(INPUT)Battery voltage is present when all doors

C: CONTROL MODULE I/O SIGNAL
B6M0405
Content Terminal No.Measuring conditions and I/O signals
(Ignition switch ACC position)
Door lock/unlock switch1
(INPUT)Battery voltage is present when all doors and rear gate (WAGON) are locked.
“0”volt is present when one of the doors or rear gate (WAGON) is unlocked.
Key cylinder lock switch2
(INPUT)“0”volt is present when key cylinder is turned to LOCK position.
Battery voltage is present when key cylinder is in positions other than LOCK.
Tamper switch3
(INPUT)Battery voltage is present when key cylinder switch is installed to key cylinder.
“0”volt is present when key cylinder switch is removed from key cylinder.
Door switch4
(INPUT)Battery voltage is present when all doors are closed.
“0”volt is present when one of the doors is open.
Starter interrupt relay5
(OUTPUT)Battery voltage is present when ignition switch is turned ACC or ON.
“0”volt is present when security system is in alarm state.
Ignition switch (ACC)6
(INPUT)Battery voltage is present when ignition switch is turned ACC or ON.
“0”volt is present when ignition switch is turned OFF.
Security indicator light7
(OUTPUT)Battery voltage is present when indicator light goes off.
“0”volt is present when indicator light illuminates.
Power supply (back-up) 8 Battery voltage is constantly present.
Ground 9—
Engine hood switch10
(INPUT)Battery voltage is present when engine hood is closed.
“0”volt is present when engine hood is open.
Trunk lid switch (SEDAN)
Rear gate switch (WAGON)11
(INPUT)Battery voltage is present when trunk lid or rear gate is closed.
“0”volt is present when trunk lid or rear gate is open.
Headlight alarm relay12
(OUTPUT)Battery voltage is present when ignition switch is turned ACC or ON.
“0”volt and battery voltage repeats in alarm state. (Headlights flash intermittently
at 0.2 sec. ON and 0.6 sec. OFF intervals).
Horn relay13
(OUTPUT)Battery voltage is present when ignition switch is turned ACC or ON.
“0”volt and battery voltage repeats in alarm state. (Horn sounds intermittently at
0.2 sec. ON and 0.6 sec. OFF intervals.)
Key cylinder unlock switch14
(INPUT)“0”volt is present when key cylinder is turned to UNLOCK position.
Battery voltage is present when key cylinder is in positions other than UNLOCK.
Trunk lid key cylinder unlock
switch (SEDAN)15
(INPUT)“0”volt is present when trunk lid key cylinder is turned to UNLOCK position.
Battery voltage is present when trunk lid key cylinder is in positions other than
UNLOCK.
89
6-2DIAGNOSTICS
6. Security System

Page 1835 of 3342

SUBARU LEGACY 1997 Service Repair Manual D: BASIC DIAGNOSTICS PROCEDURE
Start security system check.
Fully open all door windows and turn ignition switch OFF.
Take key out of ignition, exit vehicle and lock driver’s door.
Indicator light i

Page 1836 of 3342

SUBARU LEGACY 1997 Service Repair Manual From the previous step
Starter motor runs.
OK
Not OK
Check starter interrupt relay.
Check wiring harness.
Check security control module.
Check driver’s door unlock switch.
Lock the driver’s door

Page 1837 of 3342

SUBARU LEGACY 1997 Service Repair Manual From the previous step. From the previous step.
Indicator light flashes at long intervals (0.2 sec. ON and 2.4 sec.
OFF).
Unlock rear gate using a ignition key and open.
Unlock trunk lid using a ignit

Page 1838 of 3342

SUBARU LEGACY 1997 Service Repair Manual E: DIAGNOSTICS PROCEDURE FOR
SECURITY CONTROL MODULE POWER
SUPPLY/GROUND CIRCUIT
1. Check fuse and power supply circuit.
OK
Not OK
Replace fuse.
Repair or replace wiring harness.
2. Check ground ci

Page 1839 of 3342

SUBARU LEGACY 1997 Service Repair Manual B6M0452A
8) Disconnect connector from security control module.
9) Measure voltage between security control module con-
nector and body.
Connector & terminal / Specified voltage:
(B93) No. 6—Body / 1

Page 1840 of 3342

SUBARU LEGACY 1997 Service Repair Manual F: DIAGNOSTICS PROCEDURE FOR
SECURITY INDICATOR LIGHT AND
INDICATOR LIGHT CIRCUIT
1. Check security indicator light.
OK
Not OK
Replace indicator light.
2. Check power supply for indicator light.
OK

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