1997 SUBARU LEGACY service

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.
60
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.
61
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.
62
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




63
6-2SERVICE PROCEDURE
23. Seat Heater

B6M0789A
24. Front Fog Light
A: REMOVAL AND INSTALLATION
1) Disconnect ground cable from battery.
2) Remove the two bolts, then draw out the front fog light
from front bumper.
3) Disconnect the connector.
4) Installation is in the reverse order of removal.
64
6-2SERVICE PROCEDURE
24. Front Fog Light

B2M0532A
10C2CHECK INPUT SIGNAL FOR ECM.
(USING VOLTAGE METER AND SUBARU
SELECT MONITOR.)
Measure voltage between ECM connector and chassis
ground while engine is idling.
: Connector & terminal
(B84) No. 5 (+)—Chassis ground ():
Is the voltage less than 0.3 V?
: Go to step10C3.
: Go to next.
B2M0481
: Does the voltage change more than 0.3 V by
shaking harness and connector of ECM
while monitoring the value with Subaru
select monitor?
: Repair poor contact in ECM connector.
: Contact with SOA service.
NOTE:
Inspection by DTM is required, because probable cause is
deterioration of multiple parts.
B2M0645A
10C3CHECK POWER SUPPLY TO MASS AIR
FLOW SENSOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from mass air flow sensor.
3) Turn ignition switch to ON.
4) Measure voltage between mass air flow sensor connec-
tor and engine ground.
: Connector & terminal
(B3) No. 1 (+)—Engine ground ():
Is the voltage more than 10 V?
: Go to step10C4.
: Repair open circuit in harness between main relay
and mass air flow sensor connector.
136
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0535A
: Does the voltage change more than 4.5 V by
shaking harness and connector of ECM
while monitoring the value with voltage
meter?
: Repair poor contact in ECM connector.
: Contact with SOA service.
NOTE:
Inspection by DTM is required, because probable cause is
deterioration of multiple parts.
B2M0536A
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 26 (+)—Chassis ground ():
Is the voltage less than 0.2 V?
: Go to step10F3.
: Go to next step 3).
B2M0755
3) Read data on Subaru Select Monitor.

Subaru Select Monitor
Designate mode using function key.
Function mode: F20

F20: Display shows pressure signal value sent from
pressure sensor.
: Does the value change more than 0 kPa by
shaking harness and connector of ECM
while monitoring the value with Subaru
select monitor?
: Repair poor contact in ECM connector.
: Go to step10F3.
OBD0693A
10F3CHECK HARNESS BETWEEN ECM AND
PRESSURE SENSOR CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from pressure sensor.
3) Turn ignition switch to ON.
4) Measure voltage between pressure sensor connector
and engine ground.
147
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles

B2M0535A
: Does the voltage change more than 4.5 V by
shaking harness and connector of ECM
while monitoring the value with voltage
meter?
: Repair poor contact in ECM connector.
: Contact with SOA service.
NOTE:
Inspection by DTM is required, because probable cause is
deterioration of multiple parts.
B2M0536A
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 26 (+)—Chassis ground ():
Is the voltage less than 0.2 V?
: Go to step10G3.
: Go to next step 3).
B2M0755
3) Read data on Subaru Select Monitor.

Subaru Select Monitor
Designate mode using function key.
Function mode: F20

F20: Display shows pressure signal value sent from
pressure sensor.
: Does the value change more than 0 kPa by
shaking harness and connector of ECM
while monitoring the value with Subaru
select monitor?
: Repair poor contact in ECM connector.
: Go to step10G3.
151
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostic Chart with Trouble Code for LHD Vehicles