light SUBARU FORESTER 1999 Service Owner's Guide

3H24 : CHECK STOP LIGHT SWITCH.
Check circuit between stop light switch terminal.
Terminals
No. 2 Ð No. 3: (Stop light switch)
G6M0183
:Is resistance less than 1W? (When
brake pedal is depressed.)
: Replace cruise control module. 6-2 [W12B4].>
: Replace brake and stop light switch.

32
6-2[T3H2]DIAGNOSTICS
3. Cruise Control System

7. DIAGNOSTIC CODE 25 (CRUISE
CONTROL MODULE BUILT-IN RELAY,
CPU RAM)
DIAGNOSIS:
IPoor welding of built-in relay of cruise control
module.
IFailure of built-in CPU RAM of cruise control
module.
TROUBLE SYMPTOM:
ICruise control is canceled and memorized
cruise speed is also canceled.
IOnce cruise control is canceled, cruise control
cannot be set until the ignition switch and cruise
control main switch turns OFF, and then turns ON
again.
NOTE:
Check input/output signal and vehicle speed signal
with select monitor. When signals are in good
condition, failure is in cruise control module.
(Check power supply and ground conditions of
cruise control module.)
I: DIAGNOSTICS CHART WITH
SELECT MONITOR
1. FUNCTION MODE
NOTE:
Select monitor part No.:

Select the ªCruise Controlº system using the select
monitor and set the ªCurrent Data Display & Saveº
mode. The following parameters will then appear
on the display.
IVehicle Speed
The current vehicle speed is shown on the display.
IStop Light Switch
When the brake pedal is depressed, the stop light
switch shown on the display turns from ªOFFº to
ªONº.
IBrake Switch
When the brake pedal is depressed, the brake
switch shown on the display turns from ªOFFº to
ªONº.
IªSET/COASTº Switch
When the cruise control command switch is placed
in the ªSET/COASTº position, the SET/COAST
switch shown on the display turns from ªOFFº to
ªONº.
IªRESUME/ACCELº Switch
When the cruise control command switch is placed
in the ªRESUME/ACCELº position, the RESUME/
ACCEL switch shown on the display turns from
ªOFFº to ªONº.
IClutch/Inhibitor SwitchWhen the clutch pedal is depressed, the clutch/
inhibitor switch shown on the display turns from
ªONº to ªOFFº. (MT)
When the select lever is moved from the ªNº or ªPº
position to any other position, the clutch/inhibitor
switch shown on the display turns from ªONº to
ªOFFº.
52
6-2[T3H7]DIAGNOSTICS
3. Cruise Control 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

4F13 : CHECK KEYLESS ENTRY FUNC-
TION.
Press the UNLOCK/DISARM button one time.
:Does the driver's door unlock nor-
mally?
: Go to step4F14.
: Replace keyless entry control module.

4F14 : CHECK KEYLESS ENTRY FUNC-
TION.
Check if the horn signal chirps.
:Does the horn chirp two times?
: Go to step4F15.
: Replace keyless entry control module.

4F15 : CHECK KEYLESS ENTRY FUNC-
TION.
Check if the room light is turned on.
:Does the room light turn on for 30
seconds, and then turn off?
: Go to step4F16.
: Go to step4F31.
4F16 : CHECK KEYLESS ENTRY FUNC-
TION.
1) Press the LOCK/ARM button one time.
2) Press the UNLOCK/DISARM button two times.
:Do all doors and rear gate unlock
normally?
: Go to step4F17.
: Replace keyless entry control module.

4F17 : CHECK KEYLESS ENTRY FUNC-
TION.
Keep the LOCK/ARM button pressed for more than
1.5 seconds.
:Does the horn sound for 30 seconds,
and then turns off?
: Go to step4F18.
: Replace keyless entry control module.
4F18 : CHECK KEYLESS ENTRY FUNC-
TION.
1) Keep the LOCK/ARM button pressed for more
than 1.5 seconds.
2) Horn will sound, and then press the LOCK/ARM
button.
:Does the horn turn off?
: Go to step4F19.
: Replace keyless entry control module.

4F19 : CHECK KEYLESS ENTRY FUNC-
TION.
1) Keep the LOCK/ARM button pressed for more
than 1.5 seconds.
2) Horn will sound, and then press the UNLOCK/
DISARM button.
:Does the horn turn off?
: Go to step4F110.
: Replace keyless entry control module.

4F110 : CHECK DOOR SWITCH FUNCTION.
Open the front left door.
:Does the room light turn on?
: Go to step4 F 111.
: Go to step4F41.
4F111 : CHECK DOOR SWITCH FUNCTION.
1) Close the front left door.
2) Open the front right door.
:Does the room light turn on?
: Go to step4F112.
: Go to step4F41.
4F112 : CHECK DOOR SWITCH FUNCTION.
1) Close the front right door.
2) Open the rear left door.
:Does the room light turn on?
: Go to step4F113.
: Go to step4F41.
61
[T4F1]6-2DIAGNOSTICS
4. Keyless Entry System

4F113 : CHECK DOOR SWITCH FUNCTION.
1) Close the rear left door.
2) Open the rear right door.
:Does the room light turn on?
: Go to step4F114.
: Go to step4F41.
4F114 : PERFORM PROGRAMMING.
NOTE:
Finish operation from step 1) through 4) within 45
seconds.
1) Sit on the driver's seat and close all doors and
the rear gate.
2) Open the driver's door.
3) Close the driver's door.
4) Turn the ignition switch from ON to LOCK ten
times in rapid succession (within 15 seconds).
NOTE:
Do not start the engine at this time.
5) The horn chirps one time to indicate that the
system has been in the programming mode.
6) Open the driver's door.
7) Close the driver's door.
8) Press any button on the transmitter that you
wish to program into the system.
9) Horn will chirp two times to indicate that the
transmitter has been programmed.
NOTE:
Any additional transmitter can also be pro-
grammed at this time. Repeat steps 6) through 9)
for an additional transmitter.
10) Remove the ignition key from the ignition
switch.
11) The horn will chirp three times to indicate that
the system has exited the programming mode.
12) Check the keyless entry system properly oper-
ates by operating each transmitter.
:Does the transmitter operate nor-
mally?
: Go to step4F115.
: Go to step4F51.4F115 : CHECK IGNITION KEY SWITCH.
1) Insert the ignition key to the ignition switch (at
LOCK position).
2) Perform lock and unlock with transmitter.
:Does the power door lock function
normally?
: Go to step4F61.
: End of basic diagnostics procedure.
62
6-2[T4F1]DIAGNOSTICS
4. Keyless Entry System

4F28 : CHECK RESISTANCE BETWEEN
HORN RELAY AND KEYLESS
ENTRY CONTROL MODULE.
1) Disconnect connector from main fuse box and
keyless entry control module.
2) Measure resistance between keyless entry con-
trol module connector (B176) and main fuse box
connector (F37).
Connector & terminal
(B176) No. 12 Ð (F37) No. 4:
B6M1352A
:Is the resistance less than 10W?
: Replace keyless entry control module.

: Repair wiring harness between main
fuse box and keyless entry control mod-
ule.
3. DIAGNOSTICS ITEM 2
4F31 : CHECK FUSE.
Remove and visually check the fuse No. 2 (in main
fuse box).
:Is fuse No. 2 blown?
: Replace fuse (15 A).
: Go to step4F32.
4F32 : CHECK ROOM LIGHT BULB.
Remove and visually check the room light bulb.
:Is the bulb blown?
: Replace bulb.
: Go to step4F33.
4F33 : CHECK ROOM LIGHT SWITCH.
1) Remove room light.
2) Measure resistance of room light switch termi-
nal at the middle position.
Terminals
No. 2 Ð No. 3:
B6M0960A
:Is the resistance less than 1W?
: Repair or replace room light.
: Go to step4F34.
65
[T4F3]6-2DIAGNOSTICS
4. Keyless Entry System

4F34 : CHECK POWER SUPPLY FOR
ROOM LIGHT.
1) Disconnect connector from room light.
2) Open any door.
3) Measure voltage between room light connector
(R52) and chassis ground.
Connector & terminal
(R52) No. 2 (+) Ð Chassis ground (þ):
B6M0961A
:Is the voltage more than 10 V?
: Go to step4F35.
: Repair wiring harness between room
light and battery.4F35 : CHECK HARNESS CONNECTOR
BETWEEN ROOM LIGHT AND KEY-
LESS ENTRY CONTROL MODULE.
1) Disconnect connector from keyless entry con-
trol module.
2) Measure resistance between room light con-
nector (R52) and keyless entry control module
connector (B176).
Connector & terminal
(R52) No. 1 Ð (B176) No.4:
B6M0962A
:Is the resistance less than 10W?
: Replace keyless entry control module.

: Repair wiring harness between room
light and keyless entry control module.
66
6-2[T4F3]DIAGNOSTICS
4. Keyless Entry System

C: ELECTRICAL COMPONENTS LOCATION
S6M0454A
(1) Horn
(2) Keyless entry control module
(3) Security control module (under
console box)
(4) Security indicator light (in combi-
nation meter)(5) Horn relay (in main fuse box)
(6) Rear gate latch switch
(7) Interrupt relay (behind the fuse
box)
(8) Door switch(9) Passive arm connector (on driver
side front lower pillar)
71
[T5C0]6-2DIAGNOSTICS
5. Security System

E: CONTROL MODULE I/O SIGNAL
B6M0972
Content Terminal No. Measuring condition
Empty 1 Ð
Ignition switch (ON) 2 (INPUT) Battery voltage is present when ignition switch is turned ON.
Passive arm 3 Ð
Empty 4 Ð
Door switch and rear gate latch
switch5 (INPUT) 0 V is present when any door is open.
Empty 6 Ð
Keyless entry control module 7 Ð
Keyless entry control module 8 Ð
Security indicator light 9 (OUTPUT) 0 V is present when activating the alarm operation.
Keyless entry control module 10 Ð
Power supply for clearance light
(Back-up)11 Battery voltage is constantly present.
Clearance light 12 (OUTPUT) Battery voltage is present when activating the alarm operation.
Power supply (Back-up) 13 Battery voltage is constantly present.
Ground 14 Ð
Interrupt relay 15 (OUTPUT) 0 V is present when activating the alarm operation.
Empty 16 Ð
Empty 17 Ð
Empty 18 Ð
74
6-2[T5E0]DIAGNOSTICS
5. Security System

F: DIAGNOSTICS PROCEDURE
1. BASIC DIAGNOSTICS PROCEDURE
5F11 : CHECK SECURITY SYSTEM FUNC-
TION.
1) Perform basic diagnostics procedure of keyless
entry system.
2) Perform pre-inspection.
3) Open all windows.
4) Remove ignition key from ignition switch.
5) Set the room light switch in the middle position.
6) Close all doors and the rear gate.
7) Press the LOCK/ARM button one time.
:Does the clearance light blink one
time?
: Go to step5F12.
: Go to step5F21.
5F12 : CHECK SECURITY SYSTEM FUNC-
TION.
Check if the security indicator light blinks.
:Does the security indicator light blink
every 2 seconds?
: Go to step5F13.
: Go to step5F31.
5F13 : CHECK SECURITY SYSTEM FUNC-
TION.
Press the UNLOCK/DISARM button one time.
:Does the clearance light blink two
times?
: Go to step5F14.
: Replace security control module. to 6-2 [W14A1].>
5F14 : CHECK SECURITY SYSTEM FUNC-
TION.
Check if the room light activates.
:Does the room light turn on for 30
seconds and then turn off?
: Go to step5F15.
: Replace security control module. to 6-2 [W14A1].>5F15 : CHECK SECURITY SYSTEM FUNC-
TION.
1) Unlock all doors with door locking switch in the
front door.
2) Open the front left door.
:Does the security indicator light blink
every 1/8 seconds?
: Go to step5F16.
: Go to step5F41.
5F16 : CHECK SECURITY SYSTEM FUNC-
TION.
Check if the clearance light activates.
:Does the clearance light blinking
remain?
: Go to step5F17.
: Replace security control module. to 6-2 [W14A1].>
5F17 : CHECK SECURITY SYSTEM FUNC-
TION.
Check if the horn activates.
:Does the horn sound remain?
: Go to step5F18.
: Replace security control module. 6-2 [W14A1].>
5F18 : CHECK SECURITY SYSTEM FUNC-
TION.
Turn on starter.
:Does the starter motor activate?
: Go to step5F51.
: Go to step5F19.
5F19 : CHECK SECURITY SYSTEM FUNC-
TION.
Close the front left door.
:Does the horn sound and clearance
light blinking deactivate, and starter
motor activate after approximately 30
seconds?
: Go to step5F110.
: Replace security control module. to 6-2 [W14A1].>
75
[T5F1]6-2DIAGNOSTICS
5. Security System