lock SUBARU FORESTER 1999 Service Repair Manual

U: TROUBLE CODE 55
DIAGNOSIS:
Side airbag module is inflated.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5U1 : CHECK IF TROUBLE CODE 55 IS
INDICATED.
Confirm flashing trouble code according to ªBASIC
DIAGNOSTICS PROCEDUREº. [T4A0].>
:Is airbag warning light trouble code
55 indicated?
: Replace front seat with side airbag mod-
ule (Operating side) [W100].>, side airbag sensor (Operating
side) and airbag
control module.
: Perform clear memory. [T4C0].>
V: AIRBAG WARNING LIGHT
REMAINS ON.
DIAGNOSIS:
IAirbag warning light is faulty.
IAirbag control module to airbag warning light
harness circuit is shorted or open.
IGrounding circuit is faulty.
IAirbag control module is faulty.
I(AB1) and (B31) are not connected properly.
I(AB6) is not connected properly to airbag control
module.
CAUTION:
Before performing diagnostics on airbag
system, turn ignition switch ªOFFº, disconnect
battery ground cable and then wait at least 20
seconds.
5V1 : CHECK POOR CONTACT IN CON-
NECTORS (AB1) AND (B31).
1) Remove front pillar lower trim (Driver side).
2) Check poor contact in connectors (AB1) and
(B31).
B5M0122B
:Is there poor contact in double lock
of connectors (AB1) and (B31)?
: Repair poor contact in double lock of
connectors (AB1) and (B31).
: Go to step5V2.
55
[T5V1]5-5DIAGNOSTICS
5. Diagnostics Chart with Trouble Code

2. AT Shift Lock System
A: WIRING DIAGRAM
SU42-04
7
[T2A0]6-2DIAGNOSTICS
2. AT Shift Lock System

B: BASIC DIAGNOSTICS CHART
H6M0504B
8
6-2[T2B0]DIAGNOSTICS
2. AT Shift Lock System

C: DIAGNOSTICS PROCEDURE NO. 1
H6M0505A
9
[T2C0]6-2DIAGNOSTICS
2. AT Shift Lock System

D: DIAGNOSTICS PROCEDURE NO. 2 (SHIFT LOCK DOES NOT RELEASE.)
H6M0506
10
6-2[T2D0]DIAGNOSTICS
2. AT Shift Lock System

E: DIAGNOSTICS PROCEDURE NO. 3 (KEY INTERLOCK DOES NOT
OPERATE.)
H6M0507
11
[T2E0]6-2DIAGNOSTICS
2. AT Shift Lock System

F: DIAGNOSTICS PROCEDURE NO. 4 (KEY INTERLOCK DOES NOT
RELEASE.)
H6M0508
12
6-2[T2F0]DIAGNOSTICS
2. AT Shift Lock System

4. Keyless Entry System
A: PRECAUTION
1. SUPPLEMENTAL RESTRAINT SYSTEM
ªAIRBAGº
Airbag system wiring harness is routed near the
keyless entry control module.
CAUTION:
IAll airbag system wiring harness and con-
nectors are yellow. Do not use electrical test
equipment on these circuits.
IBe careful not to damage airbag system wir-
ing harness when servicing the keyless entry
control module.
B: PRE-INSPECTION
1. POWER DOOR LOCK
4B11 : CHECK POWER DOOR LOCK.
Perform lock and unlock with door lock switch.
:Does the power door lock function
normally?
: Go to step4B21.
: Repair power door lock.
2. TRANSMITTER
4B21 : CHECK TRANSMITTER BATTERY.
1) Remove battery from transmitter.
NOTE:
To prevent static electricity damage to transmitter
printed circuit board, touch steel area of building
with hand to discharge static electricity carried on
body or clothes before disassembling transmitter.
B6M0950
2) Measure voltage battery.
NOTE:
IBattery discharge occurs during measurement.
Complete measurement within 5 seconds.
IDuring battery voltage measurement, voltage
falls more than 1.8 volts during 3 seconds period.
Weak battery is indicated. Replace battery.
S6M0291A
:Is the voltage more than 2 V?
: Go to step4B22.
: Replace transmitter battery. (Use
CR2032 or equivalent.)
53
[T4B2]6-2DIAGNOSTICS
4. Keyless Entry System

4B22 : CHECK LED OF TRANSMITTER.
1) Press either the LOCK/ARM or UNLOCK/
DISARM button six times to synchronize with the
keyless entry control module.
2) Press the LOCK/ARM button.
:Does the LED blink one time?
: Go to step4B23.
: Replace transmitter.
4B23 : CHECK LED OF TRANSMITTER.
Keep the LOCK/ARM button pressed.
:Does the LED blink one time and then
turn on?
: Go to step4B24.
: Replace transmitter.
4B24 : CHECK LED OF TRANSMITTER.
Press the UNLOCK/DISARM button.
:Does the LED blink one time?
: Go to step4B25.
: Replace transmitter.
4B25 : CHECK LED OF TRANSMITTER.
Keep the UNLOCK/DISARM button pressed.
:Does the LED blink two times?
: Go to step4B26.
: Replace transmitter.
4B26 : CHECK POWER DOOR LOCK
FUNCTION.
Perform lock and unlock function of power door
lock with transmitter.
:Does it function normally?
: Go to step4B27.
: Replace transmitter.4B27 : CHECK ON/OFF SELECT HORN
SIGNAL.
Press the LOCK/ARM or UNLOCK/DISARM but-
ton.
:Does the horn signal chirp?
: Go to step4B28.
: Keep both LOCK/ARM and UNLOCK/
DISARM buttons pressed for more than
1.5 seconds. Go to step4B28.
4B28 : CHECK ON/OFF SELECT HORN
SIGNAL.
Keep both LOCK/ARM and UNLOCK/DISARM
buttons pressed for more than 1.5 seconds.
:Does the horn signal chirp two
times?
: Go to step4B29.
: Replace transmitter.
4B29 : CHECK ON/OFF SELECT HORN
SIGNAL.
Press LOCK/ARM or UNLOCK/DISARM button.
:Does the horn signal chirp?
: Replace transmitter.
: Go to step4B210.
4B210 : CHECK ON/OFF SELECT HORN
SIGNAL.
Keep both LOCK/ARM and UNLOCK/DISARM
buttons pressed for more than 1.5 seconds.
:Does the horn signal chirp one time?
: Go to step4B211.
: Replace transmitter.
4B211 : CHECK ON/OFF SELECT HORN
SIGNAL.
Press LOCK/ARM and UNLOCK/DISARM button.
:Does the horn signal chirp?
: Go to step4B212.
: Replace transmitter.
54
6-2[T4B2]DIAGNOSTICS
4. Keyless Entry System

E: CONTROL MODULE I/O SIGNAL
B6M0957
Content Terminal No. Measuring condition
Door and rear gate lock actuator
(Except driver side)1 (OUTPUT)Battery voltage is present when pressing the transmitter UNLOCK/
DISARM button two times.
Door and rear gate lock actuator 2 (OUTPUT)Battery voltage is present when pressing the transmitter LOCK/ARM
button one time.
Power supply (Back-up) 3 Battery voltage is constantly present.
IRoom light
IRear gate latch switch4 (OUTPUT)I0 V is present when pressing the transmitter UNLOCK/DISARM
button one time.
IBattery voltage is present when opening the rear gate.
Door lock switch 5 (INPUT) 0 V is present when operating the door lock switch.
Door switch 7 (INPUT) Battery voltage is present when any door is open.
Ground 8 Ð
Door lock actuator (Driver side) 9 (OUTPUT)Battery voltage is present when pressing the transmitter UNLOCK/
DISARM button one time.
Security control module 10 Ð
Security control module 11 Ð
Horn relay 12 (OUTPUT)0 V is present when pressing the transmitter UNLOCK/DISARM or
LOCK/ARM button.
Security control module 13 Ð
Ignition switch (ON) 14 (INPUT) Battery voltage is present when ignition switch is turned ON.
Door unlock switch 15 (INPUT) 0 V is present when operating the door lock switch.
Key warning switch 16 (INPUT)Battery voltage is present when inserting the key into the ignition
switch.
F: DIAGNOSTICS PROCEDURE
1. BASIC DIAGNOSTICS PROCEDURE
4F11 : CHECK KEYLESS ENTRY FUNC-
TION.
1) Perform pre-inspection.

2) Remove ignition key from ignition switch.
3) Set the room light switch in the middle position.
4) Close all doors and the rear gate.
5) Press the LOCK/ARM button one time.
:Do all doors and rear gate lock nor-
mally?
: Go to step4F12.
: Replace keyless entry control module.
4F12 : CHECK KEYLESS ENTRY FUNC-
TION.
Check if the horn signal chirps.
:Does the horn chirp one time?
: Go to step4F13.
: Go to step4F21.
60
6-2[T4E0]DIAGNOSTICS
4. Keyless Entry System