Subaru Legacy IV (2008 year). Manual — part 1112

SL-21

Keyless Entry System

SECURITY AND LOCKS

7. CHECK ROOM LIGHT OPERATION

Step

Check

Yes

No

1

CHECK ROOM LIGHT OPERATION.
Make sure the room light illuminates when the
room light switch is ON, and goes off when the
switch is OFF.

Does the room light illuminate
or go off?

Go to step 2.

Check the harness
between the fuse
and main fuse box
and room light.

2

CHECK ROOM LIGHT OPERATION.
1) Turn the room light switch to the “DOOR”
position.
2) Open/close any door (other than trunk).

Does the room light illuminate
œ go off (including off delay)
when the door is opened and
closed?

Go to step 3.

Check the room
light circuit. <Ref.
to LI-33, Room
Light.>

3

CHECK HARNESS.
1) Disconnect the body integrated unit harness
connector and room light harness connector.
2) Measure the resistance between the body
integrated unit harness connector terminal and
room light harness connector terminal.

Connector & terminal

(B280) No. 3 — (R52) No. 2:

Is the resistance less than 10

:? Go to step 4.

Repair or replace
the harness.

4

CHECK HARNESS.
Measure the voltage between room light har-
ness connector terminal and chassis ground.

Connector & terminal

(R52) No. 3 (+) — Chassis ground (–):

Is the voltage 10 V or more?

Go to step 5.

Repair or replace
the harness.

5

CHECK KEYLESS ENTRY OPERATION.
Press the LOCK/UNLOCK button of the keyless
transmitter.

Is operation normal?

Replace the body
integrated unit.
<Ref. to SL-56,
Body Integrated
Unit.>

Check the bulb or
room light assem-
bly, and replace if
necessary.

SL-22

Keyless Entry System

SECURITY AND LOCKS

8. CHECK HAZARD LIGHT OPERATION

Step

Check

Yes

No

1

CHECK HAZARD LIGHT OPERATION.
Make sure the hazard light blinks when hazard
switch is turned to ON.

Does the hazard light blink?

Go to step 2.

Check the hazard
light circuit. <Ref.
to LI-7, Turn Signal
Light and Hazard
Light System.>

2

CHECK OUTPUT TO HAZARD LIGHT.
1) Turn the ignition switch to OFF.
2) Disconnect the key warning switch harness
connector.
3) Prepare the Subaru Select Monitor kit.
4) Turn the ignition switch to ON (engine OFF)
and run the “PC application for Subaru Select
Monitor”.
5) On the «System Selection Menu» display,
select the {Integ. unit mode}.
6) Select {ECM customizing}.
7) Check {Hazard answer-back setup}, and
then switch to ON setting if necessary.
8) Select the {Current Data Display & Save}.
9) Remove the key from ignition switch.
10) When operate the LOCK/UNLOCK button
of transmitter, check the hazard output signal of
body integrated unit.

Is output signal is present when
operating the transmitter
LOCK/UNLOCK button?

Go to step 3.

Check the body
integrated unit.
<Ref. to
LAN(diag)-2, Basic
Diagnostic Proce-
dure.>

3

CHECK CIRCUIT OF HAZARD LIGHT.
1) Disconnect the harness connector of body
integrated unit.
2) Disconnect the turn signal and hazard unit
harness connector.
3) Measure the resistance between harness
connector terminals.

Connector & terminal

(B280) No. 12 — (B32) No. 8:

Is the resistance less than 10

:? Check the body

integrated unit.
<Ref. to
LAN(diag)-2, Basic
Diagnostic Proce-
dure.>

Repair or replace
the harness.

SL-23

Keyless Entry System

SECURITY AND LOCKS

9. CHECK TRUNK LID LOCK ACTUATOR

10.CHECK DOOR LOCK SWITCH

Refer to the door lock switch inspection of the door lock control system. <Ref. to SL-8, CHECK DOOR LOCK
SWITCH, INSPECTION, Door Lock Control System.>

Step

Check

Yes

No

1

CHECK TRUNK LID LOCK ACTUATOR.
1) Turn the ignition switch to OFF.
2) Disconnect the key warning switch harness
connector.
3) Prepare the Subaru Select Monitor kit.
4) Turn the ignition switch to ON (engine OFF)
and run the “PC application for Subaru Select
Monitor”.
5) On the «System Selection Menu» display,
select the {Integ. unit mode}.
6) Select the {Current Data Display & Save}.
7) When operating the TRUNK button of the
transmitter, check the trunk unlock output signal
of the body integrated unit.

Is the display change to OFF

œ

ON, when the transmitter
TRUNK button is operated?

Go to step 2.

Check the body
integrated unit.
<Ref. to
LAN(diag)-2, Basic
Diagnostic Proce-
dure.>

2

CHECK CIRCUIT OF TRUNK LID LOCK AC-
TUATOR.
1) Disconnect the harness connector of body
integrated unit.
2) Disconnect the trunk lid lock actuator har-
ness connector.
3) Measure the resistance between harness
connectors.

Connector & terminal

(i84) No. 22 — (R186) No. 2:

Is the resistance less than 10

:? Go to step 3.

Repair or replace
the harness.

3

CHECK GROUND CIRCUIT OF TRUNK LID
LOCK ACTUATOR.
Measure the resistance between trunk lid lock
actuator harness connector terminal and chas-
sis ground.

Connector & terminal

(R186) No. 1 — Chassis ground:

Is the resistance less than 10

:? Go to step 4.

Repair or replace
the harness.

4

CHECK TRUNK LID LOCK ACTUATOR.
Check the trunk lid lock actuator. <Ref. to SL-
44, Trunk Lid Lock Assembly.>

Is trunk lid lock actuator nor-
mal?

Replace the body
integrated unit.
<Ref. to SL-56,
Body Integrated
Unit.>

Replace the trunk
lid lock assembly.

SL-24

Keyless Entry System

SECURITY AND LOCKS

11.CHECK IGNITION SWITCH ILLUMINATION

12.CHECK HORN OPERATION

Step

Check

Yes

No

1

CHECK FUSE.
Remove and visually check the fuse No. 14 (in
the main fuse box).

Is the fuse blown out?

Replace the fuse
with a new part.

Go to step 2.

2

CHECK POWER SUPPLY.
1) Disconnect the ignition switch illumination
harness connector.
2) Measure the voltage between harness con-
nector terminal and chassis ground.

Connector & terminal

(B224) No. 2 (+) — Chassis ground (–):

Is the voltage 10 V or more?

Go to step 3.

Check the harness
for open circuits
and shorts
between the igni-
tion switch illumi-
nation and fuse.

3

CHECK IGNITION SWITCH ILLUMINATION
CIRCUIT.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between body inte-
grated unit harness connector terminal and
ignition switch illumination harness connector
terminal.

Connector & terminal

(B280) No. 4 — (B224) No. 1:

Is the resistance less than 10

:? Go to step 4.

Check the harness
for open circuits
and shorts
between the body
integrated unit and
ignition switch illu-
mination.

4

CHECK IGNITION SWITCH ILLUMINATION
BULB.
1) Remove the ignition switch illumination bulb.
2) Connect the battery (+) terminal and (–) ter-
minal to the illumination bulb.

Does the bulb illuminate?

Replace the body
integrated unit.
<Ref. to SL-56,
Body Integrated
Unit.>

Replace the igni-
tion switch illumi-
nation bulb with a
new part.

Step

Check

Yes

No

1

CHECK HORN OPERATION.
Make sure the horn sounds when the horn
switch is pushed.

Does the horn sound?

Go to step 2.

Check the horn cir-
cuit. <Ref. to COM-
2, General
Description.>

2

CHECK HORN OPERATION.
1) Disconnect the harness connector of body
integrated unit.
2) Connect the harness connector terminal to
ground using a suitable lead wire.

Connector & terminal

(B280) No. 11 (+) — Chassis ground (–):

Does the horn sound?

Check the body
integrated unit.
<Ref. to
LAN(diag)-2, Basic
Diagnostic Proce-
dure.>

Check the harness
for open circuits
and/or shorts
between the body
integrated unit and
horn relay.