2004 SUBARU FORESTER diagram

AB-97
AIRBAG SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AA:DTC 81
DIAGNOSIS:
 Lap seat belt pretensioner circuit (RH) is open, shorted or shorted to ground.
 Lap pretensioner is faulty.
 Lap pretensioner harness is faulty.
 Airbag control module is faulty.
CAUTION:
 Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground cable from battery, and wait more than 20 seconds before starting to work.
 After replacing the airbag module, seat belt pretensioner, roll connector, control module or sensor,
reconnect each part and confirm that the airbag warning light operates properly.
 When inspecting the side airbag harness, disconnect the side airbag module connector and seat
belt pretensioner connector for the safety reasons.
WIRING DIAGRAM:
AB-00749
AB8
AB25
4 1
23
AB8AB25
12
AIRBAG CONTROL MODULE
LAP SEAT BELT PRETENSIONER
FOR AUSTRALIA MODEL
123456
789101112

AB-99
AIRBAG SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AB:DTC 85
DIAGNOSIS:
 Lap seat belt pretensioner circuit (RH) is shorted to the power supply.
 Lap pretensioner is faulty.
 Lap pretensioner harness is faulty.
 Airbag control module is faulty.
CAUTION:
 Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground cable from battery, and wait more than 20 seconds before starting to work.
 After replacing the airbag module, seat belt pretensioner, roll connector, control module or sensor,
reconnect each part and confirm that the airbag warning light operates properly.
 When inspecting the side airbag harness, disconnect the side airbag module connector and seat
belt pretensioner connector for the safety reasons.
WIRING DIAGRAM:
AB-00749
AB8
AB25
4 1
23
AB8AB25
12
AIRBAG CONTROL MODULE
LAP SEAT BELT PRETENSIONER
FOR AUSTRALIA MODEL
123456
789101112

SB-7
SEAT BELT SYSTEM
Seat Belt Warning System
3. Seat Belt Warning System
A: WIRING DIAGRAM

B: INSPECTION
TROUBLE SYMPTOM:
 Seat belt warning light does not come on or go off.
 Buzzer does not beep.
Step Check Yes No
1 CHECK HARNESS BETWEEN SEAT BELT
TIMER MODULE AND CHASSIS GROUND.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from seat belt
timer module.
3) Measure the resistance between seat belt
timer module harness connector and chassis
ground.
Connector & terminal
(B44) No. 3 — Chassis ground:Is the resistance less than 1
Ω?Go to step 2.Repair the open
circuit of harness
between seat belt
timer module and
chassis ground.
2 CHECK POWER SUPPLY OF SEAT BELT
TIMER MODULE.
1) Turn the ignition switch to ON.
2) Measure the voltage between seat belt
timer module connector and chassis ground.
Connector & terminal
(B44) No. 9 (+) — Chassis ground (–):Is the voltage more than 10 V? Go to step 3.Repair the open
harness, short cir-
cuit and poor con-
tact of connector
between seat belt
timer module and
battery.
3 CHECK HARNESS AND SEAT BELT
SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from seat belt
timer module.
3) Hold the tang plate disconnected from seat
belt buckle.
4) Measure the resistance between seat belt
timer module harness connector and chassis
ground.
Connector & terminal
(B44) No. 6 — Chassis ground:Is the resistance less than 1
Ω?Go to step 4.Repair the short
circuit of harness
between seat belt
timer module con-
nector and chassis
ground.
4 CHECK SEAT BELT SWITCH AND HAR-
NESS.
1) Turn the ignition switch to OFF.
2) Insert the tang plate into seat belt buckle.
3) Measure the resistance between seat belt
timer module connector and chassis ground.
Connector & terminal
(B44) No. 6 — Chassis ground:Is the resistance more than 1
MΩ?Go to step 7.Go to step 5.
5 CHECK HARNESS BETWEEN SEAT BELT
TIMER MODULE AND SEAT BELT SWITCH.
Measure the resistance of harness between
seat belt timer module connector and seat belt
switch.
Connector & terminal
(B44) No. 6 — (R8) No. 2:Is the resistance less than 1
Ω?Go to step 6.Repair the open
circuit of harness
and poor contact
of connector
between seat belt
timer module con-
nector and seat
belt switch.

LI-3
LIGHTING SYSTEM
Headlight and Tail Light System
2. Headlight and Tail Light Sys-
tem
A: WIRING DIAGRAM
1. HEADLIGHT
System.>
2. CLEARANCE LIGHT AND ILLUMINA-
TION LIGHT
Light and Illumination Light System.>
B: INSPECTION
1. HEADLIGHT SWITCH
(Light).>
2. HEADLIGHT RELAY
Measure the headlight relay resistance between
terminals when connecting terminal No. 4 to battery
positive terminal and terminal No. 3 to battery
ground terminal.
3. TAIL AND ILLUMINATION RELAY
Measure the tail and illumination relay resistance
between terminals when connecting terminal No. 4
to battery positive terminal and terminal No. 3 to
battery ground terminal.
Current Terminal No. Standard
Flow
1 and 2Less than 1 Ω
No flow More than 1 MΩ
LI-00001
(1)
(2) (1)
(4)(2)
(3)
(3)(4)
Current Terminal No. Standard
Flow
1 and 2Less than 1 Ω
No flow More than 1 MΩ
LI-00001
(1)
(2) (1)
(4)(2)
(3)
(3)(4)

LI-4
LIGHTING SYSTEM
Front Fog Light System
3. Front Fog Light System
A: WIRING DIAGRAM
1. FRONT FOG LIGHT
Light System.>
B: INSPECTION
1. FRONT FOG LIGHT SWITCH
Measure the resistance between front fog light switch
terminals.
2. FRONT FOG LIGHT RELAY
Measure the front fog light relay resistance be-
tween terminals when connecting terminal No. 4 to
battery positive terminal and terminal No. 3 to bat-
tery ground terminal.
Switch position Terminal No. Standard
OFF
3 and 5More than 1 MΩ
ON Less than 1 Ω
Current Terminal No. Standard
Flow
1 and 2Less than 1 Ω
No flow More than 1 MΩ
LI-00051
LI-00001
(1)
(2) (1)
(4)(2)
(3)
(3)(4)

LI-5
LIGHTING SYSTEM
Rear Fog Light System
4. Rear Fog Light System
A: WIRING DIAGRAM
1. REAR FOG LIGHT
Light System.>
B: INSPECTION
1. REAR FOG LIGHT SWITCH
1) Turn the ignition switch to ON.
2) Turn on the headlight or front fog light.
3) Push the rear fog light switch and check if the
rear fog light turns on.
2. REAR FOG LIGHT RELAY
Measure the rear fog light relay resistance between
terminals when connecting terminal No. 4 to battery
positive terminal and terminal No. 3 to battery
ground terminal.
Current Terminal No. Standard
Flow
1 and 2Less than 1 Ω
No flow More than 1 MΩ
LI-00001
(1)
(2) (1)
(4)(2)
(3)
(3)(4)

LI-6
LIGHTING SYSTEM
Turn Signal Light and Hazard Light System
5. Turn Signal Light and Hazard
Light System
A: WIRING DIAGRAM
1. TURN SIGNAL LIGHT AND HAZARD
LIGHT
Light and Hazard Light System.>
B: INSPECTION
1. TURN SIGNAL SWITCH
(Light).>
2. HAZARD SWITCH
Measure the resistance between hazard switch ter-
minals.
3. TURN SIGNAL AND HAZARD MODULE
Connect the battery and the turn signal light bulb to
module, as shown in the figure. The module is
properly functioning if it blinks when power is sup-
plied to the circuit.
Switch position Terminal No. Standard
OFF 6 and 7 Less than 1 Ω
ON1, 3 and 4 Less than 1 Ω
7 and 8 Less than 1 Ω
LI-00002
43 21
5 6 7 8
LI-00003

LI-7
LIGHTING SYSTEM
Back-up Light System
6. Back-up Light System
A: WIRING DIAGRAM
1. BACK-UP LIGHT
Light System.>
B: INSPECTION
1. BACK-UP LIGHT SWITCH (MT MODEL)
Measure the resistance between back-up light switch
terminals.
2. INHIBITOR SWITCH (AT MODEL)
Measure the resistance between inhibitor switch ter-
minals.
(A) Non-turbo model
(B) Turbo model
Switch position Terminal No. Standard
When shift lever is
set in reverse
positionNon-turbo model:
1 and 2
Turbo model:
2 and 4Less than 1 Ω
Other positions More than 1 MΩ
LI-00317 1 2
1 2
3 4
(A)
(B)Switch position Terminal No. Standard
When select lever
is set in “R” range
1 and 2Less than 1 Ω
Other positions More than 1 MΩ
9
LI-000054321 5 6
7 8 10 11 12