Subaru Legacy IV (2008 year). Manual — part 1113

SL-25

Keyless Entry System

SECURITY AND LOCKS

13.CHECK KEYLESS BUZZER

Step

Check

Yes

No

1

CHECK KEYLESS BUZZER SOUND.
1) Using the Subaru Select Monitor, set the
keyless buzzer sound to ON.
2) Operate the LOCK/UNLOCK button of the
transmitter and check whether the keyless
buzzer sounds or not.

Does the keyless buzzer
sound?

Keyless buzzer is
normal.

Go to step 2.

2

CHECK KEYLESS BUZZER GROUND CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the keyless buzzer harness con-
nector.
3) Measure the resistance between keyless
buzzer harness connector terminal and chassis
ground.

Connector & terminal

(F102) No. 2 — Chassis ground:

Is the resistance less than 10

:? Go to step 3.

Repair or replace
the harness.

3

CHECK KEYLESS BUZZER POWER SUP-
PLY CIRCUIT.
1) Disconnect the harness connector of body
integrated unit.
2) Measure the resistance between the body
integrated unit harness connector and keyless
buzzer harness connector.

Connector & terminal

(i84) No. 6 — (F102) No. 1:

Is the resistance less than 10

:? Go to step 4.

Repair or replace
the harness.

4

CHECK KEYLESS BUZZER.
1) Remove the keyless buzzer.
2) Install the keyless buzzer to another vehicle
which operates keyless buzzer normally, check
the buzzer sounds.

Does the keyless buzzer
sound?

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

Replace the key-
less buzzer.

SL-26

Keyless Entry System

SECURITY AND LOCKS

14.CHECK IGNITION SWITCH

CAUTION:
When the ignition key lock is replaced, all ignition keys also must be registered. (Refer to the “IMMO-
BILIZER TEACHING OPERATION MANUAL”.)

Step

Check

Yes

No

1

CHECK IGNITION SWITCH INPUT.
1) Prepare the Subaru Select Monitor kit.
2) Turn the ignition switch to ON (engine OFF)
and run the “PC application for Subaru Select
Monitor”.
3) On the «System Selection Menu» display,
select the {Integ. unit mode}.
4) Select the {Current Data Display}.
5) Check the following data display.

Is the data display 10 V or more
(BATT voltage (Control), IG
power supply voltage)?

Ignition switch is
normal.

Go to step 2.

2

CHECK IGNITION SWITCH INPUT.
1) Turn the ignition switch to ON.
2) Measure the voltage between the body inte-
grated unit harness connector and chassis
ground.

Connector & terminal

(i84) No. 1 (+) — Chassis ground (–):

Is the voltage 10 V or more?

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

Go to step 3.

3

CHECK FUSIBLE LINK.
Remove the fusible link main SBF and SBF-6
(in main fuse box), and visually check.

Is the fusible link blown out?

Replace the fusible
link main SBF or
SBF-6. If the
replaced fusible
link has blown out
easily, repair the
short circuit
between the fus-
ible link and the
ignition switch.

Go to step 4.

4

CHECK FOR POWER SUPPLY OF IGNITION
SWITCH.
1) Disconnect the ignition switch harness con-
nector.
2) Measure the voltage between harness con-
nector terminal and chassis ground.

Connector & terminal

(B72) No. 3 (+) — Chassis ground (–):

Is the voltage 10 V or more?

Go to step 5.

Check the harness
for open circuits
and shorts
between the igni-
tion switch and fus-
ible link.

5

CHECK IGNITION SWITCH.
1) Insert the ignition key into ignition switch,
and turn the each position.
2) Measure the resistance between ignition
switch terminals.

Connector & terminal

No. 3 — No. 5: (ACC position)
No. 3 — No. 5 — No. 1 — No. 4
(ON position)
No. 3 — No. 1 — No. 4 — No. 2
(ST position)

Is the resistance less than 1

:

when turning the ignition key to
each position?

Ignition switch is
normal.

Replace the igni-
tion switch. <Ref.
to SL-49,
REPLACEMENT,
Ignition Key Lock.>

SL-27

Security System

SECURITY AND LOCKS

4. Security System

A: WIRING DIAGRAM

For wiring diagrams related to the security system, refer to “Security System” in Section WI. <Ref. to WI-186,
WIRING DIAGRAM, Security System.>

B: ELECTRICAL SPECIFICATION

Refer to the Control Module I/O Signal of the LAN SYSTEM (DIAGNOSTICS). <Ref. to LAN(diag)-9, ELEC-
TRICAL SPECIFICATION, Control Module I/O Signal.>

C: INSPECTION

1. BASIC DIAGNOSTIC PROCEDURE

Step

Check

Yes

No

1

INITIAL CHECK.
Check keyless entry system.

Does the keyless entry system
operate normally?

Go to step 2.

Check keyless
entry system.
<Ref. to SL-14,
INSPECTION,
Keyless Entry Sys-
tem.>

2

CHECK SECURITY ON/OFF SETTING.
1) Remove the key from ignition switch, and
then close all doors.
2) Press the UNLOCK button of the keyless
transmitter.
3) Check the security indicator light blinking
patterns.

Is the security indicator light
blinking patterns as follows?
• Model with immobilizer: Blinks
in every 3 seconds

Go to step 3.

Check the security
indicator light cir-
cuit. <Ref. to SL-
32, CHECK
SECURITY INDI-
CATOR LIGHT
CIRCUIT,
INSPECTION,
Security System.>

3

CHECK SECURITY ON/OFF SETTING.
1) Press the LOCK button of the transmitter.
2) Check the security indicator light blinking
patterns.

Is the security indicator light
blinking patterns as follows?
• When monitoring lag is set to
0 seconds: Blinks twice within
0.5 seconds at 2 second inter-
vals.
• When monitoring lag is set to
30 seconds: Blinks three times
within 1 second at 0.4 second
intervals.

Go to step 6.

Go to step 4.

4

CHANGE SETTING OF SECURITY SYSTEM.
Change the setting of security system to ON.
<Ref. to SL-29, SECURITY SYSTEM ON/OFF
SETTING, INSPECTION, Security System.>

Is setting change completed
correctly?

Go to step 5.

• Check the igni-
tion switch circuit.
<Ref. to SL-33,
CHECK IGNITION
SWITCH CIRCUIT,
INSPECTION,
Security System.>
• Check the door
lock switch circuit.
<Ref. to SL-23,
CHECK DOOR
LOCK SWITCH,
INSPECTION,
Keyless Entry Sys-
tem.>

SL-28

Security System

SECURITY AND LOCKS

5

CHECK SETTING CHANGE OF SECURITY
SYSTEM.
1) Remove the key from ignition switch, and
then close all doors.
2) Press the LOCK button of the transmitter.
3) Check the security indicator light blinking
patterns.

Is the security indicator light
blinking patterns as follows?
• When monitoring lag is set to
0 seconds: Blinks twice within
0.5 seconds at 2 second inter-
vals.
• When monitoring lag is set to
30 seconds: Blinks three times
within 1 second at 0.4 second
intervals.

Go to step 6.

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

6

CHECK SECURITY SYSTEM OPERATION.
Press the LOCK button of keyless transmitter,
and wait for 30 seconds.

Is the blinking pattern of secu-
rity indicator light blink twice
within 0.5 seconds in 2 second
cycles?

Go to step 7.

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

7

CHECK SECURITY SYSTEM CANCEL OP-
ERATION.
Insert the key to the door key cylinder to unlock.

Is the security indicator light
blinking patterns as follows?
• Model with immobilizer: Blinks
in every 3 seconds

Press the LOCK
button of keyless
transmitter, and
wait for 30 sec-
onds. Go to step 8.

Check the door key
cylinder circuit.
<Ref. to SL-33,
CHECK DOOR
KEY CYLINDER
SWITCH & CIR-
CUIT, INSPEC-
TION, Security
System.>

8

CHECK SECURITY ALARM OPERATION.
1) Unlock all doors using the door lock switch
on driver’s door.
2) Open any door, trunk or rear gate.

Does the security alarm oper-
ate when opening any door,
trunk or rear gate?

Go to step 9.

• Check the door
switch. <Ref. to
SL-30, CHECK
DOOR SWITCH,
INSPECTION,
Security System.>
• Check the trunk
lid switch or rear
gate latch switch.
<Ref. to SL-31,
CHECK TRUNK
LID SWITCH
(SEDAN) OR
REAR GATE
LATCH SWITCH
(WAGON),
INSPECTION,
Security System.>

9

CHECK SECURITY ALARM OPERATION.
Check the security alarm operation.

Does all security alarm oper-
ate?
• Horn sounds
• Hazard light blinks
• Security indicator light illumi-
nates

Go to step 10.

• Check the horn.
<Ref. to SL-32,
CHECK HORN,
INSPECTION,
Security System.>
• Check the haz-
ard light. <Ref. to
SL-32, CHECK
HAZARD LIGHT
OPERATION,
INSPECTION,
Security System.>

Step

Check

Yes

No