1996 SUBARU LEGACY Ecu

B6M0377
4. KEY CYLINDER LOCK/UNLOCK SWITCH AND
TAMPER SWITCH
Door Switch
1) Disconnect connector of door key cylinder switch.
2) Move switch by turning the key cylinder with ignition key
and/or remove switch from key cylinder to check continuity
between terminals as indicated in table below:
Terminal
Switch position1234
Normal
LOCK
UNLOCK
Switch is removed from
key cylinder.
B6M0378A
Trunk Lid Switch (SEDAN)
1) Disconnect connector of trunk lid key cylinder switch.
2) Move switch by turning the key cylinder with ignition key
and/or remove switch from key cylinder to check continuity
between terminals as indicated in table below:
Terminal
Switch position123
Normal
UNLOCK
Switch is removed from
key cylinder.
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6-2SERVICE PROCEDURE
22. Security System

B6M0379
Rear Gate Switch (WAGON)
1) Disconnect connector of rear gate key cylinder switch.
2) Move switch by turning the key cylinder with ignition key
and check continuity between terminals as indicated in
table below:
Terminal
Switch position124
Normal
LOCK
UNLOCK
B6M0133A
B6M0381A
5. DOOR LOCK/UNLOCK SWITCH
NOTE:
The door lock/unlock switch is united with the power door
lock actuator.
1) Disconnect connector of door lock/unlock switch.
2) Set switch to each position and check continuity
between terminals as indicated in table below:
Driver’s Door
Terminal
Switch position12
UNLOCK
LOCK
Passenger’s Door
Terminal
Switch position1234
UNLOCK
LOCK
Rear Gate (WAGON)
Terminal
Switch position1234
UNLOCK
LOCK
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6-2SERVICE PROCEDURE
22. Security System

6. DOOR SWITCH
Refer to 6-2 [W8B1] as for inspection of door switch.
NOTE:
The door switch is combined with the door switch for room
light.
7. TRUNK LID SWITCH (SEDAN)
Refer to 6-2 [W8B2] as for inspection of trunk lid switch.
NOTE:
The trunk lid switch is combined with the trunk room light
switch.
8. REAR GATE SWITCH (WAGON)
Refer to 6-2 [W8B3] as for inspection of rear gate switch.
NOTE:
The rear gate switch is combined with the luggage room
light switch.
B6M0382A
9. SECURITY INDICATOR LIGHT
1) Remove security indicator light.
2) Check continuity between terminals of security indicator
light.
3) If there is no continuity, the indicator light will be fail-
ured.
Terminals: No. 2—No. 4
10. SECURITY CONTROL MODULE
Refer to 6-2 [K600]:“6. SECURITY SYSTEM”for inspec-
tion of security control module.
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6-2SERVICE PROCEDURE
22. Security System

C: FUNCTION TEST
1. SECURITY SYSTEM OPERATION
1) Fully open all the door windows.
2) Turn the ignition switch to OFF and remove ignition key
from ignition switch.
3) Get out of the vehicle and lock the driver’s door using a
ignition key.
4) Check that the security indicator light illuminates.
5) When the security indicator light illuminates, wait for 30
seconds.
After 30 seconds, check that the light starts repeating 0.2
sec. ON and 2.4 sec. OFF sequence.
6) Unlock the driver’s door using the inside lock knob and
open the door.
Ensure that:
(1) the horn sounds and headlights flash intermittently
at 0.2 sec. ON and 0.6 sec. OFF. intervals, and
(2) the engine will not start even if the ignition switch
is turned to START.
7) Unlock the driver’s door one time using the ignition key.
Ensure the horn and headlights turn off.
8) Close and lock the driver’s door without using a ignition
key. (Set the inside lock knob to LOCK and then close the
door while lifting the outer handle).
Check that the security indicator light illuminates continu-
ously.
9) Within 30 seconds after the above step 8), unlock the
rear LH door using the inside lock knob and open the door.
Check that the security indicator light flashes at 0.5 sec.
intervals.
10) Close the rear LH door and lock the door using the
inside lock knob.
Check that the security indicator light illuminates continu-
ously.
11) Perform the above steps 9) and 10) on the rear RH
door and front RH door.
12) Within 30 seconds after above step 11) has been
finished, pull the engine hood opener lever and open the
engine hood.
Check that the security indicator light flashes at 0.5 sec.
intervals.
13) Close the engine hood completely.
Check that the security indicator light illuminates continu-
ously.
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6-2SERVICE PROCEDURE
22. Security System

14) Within 30 seconds after the above step 13), pull the
trunk lid opener lever and open the trunk lid (SEDAN); or
unlock the rear gate by operating the driver’s door inside
lock knob and open the rear gate (WAGON).
Check that the security indicator light flashes at 0.5 sec.
intervals.
15) Close the trunk lid completely (SEDAN); or close the
rear gate and lock by locking the driver’s door using a igni-
tion key (WAGON).
Check that the security indicator light illuminates continu-
ously.
16) When the security indicator light illuminates
continuously, wait for 30 seconds.
After 30 seconds, check that the light starts repeating 0.2
sec. ON and 2.4 sec. OFF sequence.
17) Unlock the trunk lid (SEDAN) or rear gate (WAGON)
using a ignition key and open.
Check that the horn and headlights do not operate.
18) Close the trunk lid (SEDAN) or rear gate (WAGON).
19) Unlock and then lock the driver’s door using a ignition
key and wait for 30 seconds.
After 30 seconds, check that the light starts repeating 0.2
sec. ON and 2.4 sec. OFF sequence.
20) Only WAGON model; unlock and then lock the rear
gate using a ignition key and wait for 30 seconds.
After 30 seconds, check that the light starts repeating 0.2
sec. ON and 2.4 sec. OFF sequence.
21) Unlock the front RH door using a ignition key and open
the door.
Check that the horn and headlights do not operate.
After finishing the above checks, ensure that security sys-
tem’s function is correct.
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6-2SERVICE PROCEDURE
22. Security System

23. Seat Heater
A: REMOVAL AND INSTALLATION
1. SEAT HEATER
Refer to 5-3 [W1A0] as for removal of seat (including
heater system).
B6M0150A
2. SEAT HEATER SWITCH
1) Remove screws which secure rear console cover, and
then remove rear console cover.
2) Remove seat heater switch from console cover.
B6M0151A
B: INSPECTION
1. SEAT HEATER
Check continuity between terminals of seat heater connec-
tor.

Between terminals No. 1 and No. 3

Between terminals No. 1 and No. 4

Between terminals No. 3 and No. 4
B6M0152
2. SEAT HEATER SWITCH
Set switch to each position and check continuity between
terminals as indicated in table below:
Terminal
Switch562 34 1
OFF

LO
HI




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6-2SERVICE PROCEDURE
23. Seat Heater

6. Security System
A: ELECTRICAL COMPONENTS LOCATION
B6M0403A
1Security control module

2Security indicator light

3RH door key cylinder lock/unlock switch (built-in tamper
switch)

4Door switch

5Door lock/unlock switch

6Trunk lid key cylinder unlock switch (SEDAN) (built-in tamper
switch)

7Trunk lid switch (SEDAN)

8Rear gate key cylinder lock/unlock switch (WAGON)
9Rear gate switch (WAGON)

10LH door key cylinder lock/unlock switch (built-in tamper
switch)

11Starter interrupt relay

12Headlight alarm relay

13Ignition switch (ACC position)

14Engine hood switch

15Horn

16Headlight
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6-2DIAGNOSTICS
6. Security System

B: SCHEMATIC
B6H0319
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6-2DIAGNOSTICS
6. Security System