Page 97 of 2870

AC-41
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
General Diagnostic Table
9. General Diagnostic Table
A: INSPECTION
Symptom Problem parts
A/C system fails to operate.Fuse
Connector (Poor contact)
Ground
Auto A/C control module
Blower fan motor
Blower fan relay
A/C Relay
Compressor (Magnet clutch)
Evaporator sensor
Fuse is blown out.Fuse
Connector (Poor contact)
Illumination cannot dim.Fuse
Connector (Poor contact)
Auto A/C control module
Blower fan does not rotate or fan speed cannot be controlled.Fuse
Connector (Poor contact)
Ground
Auto A/C control module
Blower fan motor
Blower fan relay
Unable to switch suction vents. Connector (Poor contact)
Auto A/C control module
Intake door actuator
Unable to switch blow vents. Connector (Poor contact)
Auto A/C control module
Mode door actuator
Compartment temperature does not increase. (No hot air is dis-
charged.) Connector (Poor contact)
Auto A/C control module
Air mix door actuator
In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
In-vehicle sensor aspirator hose
Compartment temperature does not decrease. (No cool air is
discharged.) Connector (Poor contact)
Auto A/C control module
Air mix door actuator
A/C Relay
Compressor (Magnet clutch)
Radiator fan motor
Radiator fan relay
In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
In-vehicle sensor aspirator hose
Compartment temperature is higher or lower than setting tem-
perature. Auto A/C control module
Air mix door actuator
In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
In-vehicle sensor aspirator hose
Compartment temperature does not quickly respond to setting
temperature. Air mix door actuator
In-vehicle sensor, ambient sensor, evaporator sensor and
sunload sensor
In-vehicle sensor aspirator hose
Radiator fan does not rotate during A/C operation. Radiator fan motor
Radiator fan relay
Page 98 of 2870
AC-42
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
General Diagnostic Table
Page 99 of 2870

FUJI HEAVY INDUSTRIES LTD. G8080GE7
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.HVAC SYSTEM
(HEATER, VENTILATOR AND A/C)AC
HVAC SYSTEM (AUTO A/C)
(DIAGNOSTIC)AC
AIRBAG SYSTEM AB
AIRBAG SYSTEM (DIAGNOSTIC) AB
SEAT BELT SYSTEM SB
LIGHTING SYSTEM LI
WIPER AND WASHER SYSTEM WW
ENTERTAINMENT ET
COMMUNICATION SYSTEM COM
GLASS/WINDOW/MIRROR GW
BODY STRUCTURE BS
INSTRUMENTATION/DRIVER INFO IDI
SEAT SE
SECURITY AND LOCK SL
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF)SR
EXTERIOR/INTERIOR TRIM EI
EXTERIOR BODY PANEL EB
Page 100 of 2870
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8080GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4SO)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC)
CRUISE CONTROL SYSTEM
(DIAGNOSTIC)CC(H4DOTC 2.5)
IMMOBILIZER (DIAGNOSTIC) IM
Page 101 of 2870

AIRBAG SYSTEM
AB
Page
1. General Description ....................................................................................2
2. Airbag Connector ........................................................................................9
3. Inspection Locations After a Collision .......................................................12
4. Driver’s Airbag Module ..............................................................................14
5. Passenger’s Airbag Module ......................................................................15
6. Side Airbag Module ...................................................................................16
7. Airbag Control Module ..............................................................................18
8. Side Airbag Sensor ...................................................................................19
9. Roll Connector ..........................................................................................20
10. Front Sub Sensor ......................................................................................21
11. Airbag Module Disposal (Deployment Processing On Vehicle) ................22
12. Disposal of Airbag Module (Deploying After Removal from Vehicle) ........26
Page 102 of 2870
AB-2
AIRBAG SYSTEM
General Description
1. General Description
A: COMPONENT
1. SRS AIRBAG
(1) Combination switch ASSY with roll
connector(5) Airbag control moduleTightening torque: N·m (kgf-m, ft-lb)
(6) Side airbag sensorT1: 5.9 (0.59, 4.4)
(2)
TORX
® bolt T30(7) Wiring harness rear
T2: 7.4 (0.75, 5.4)
(3) Airbag module ASSY (Driver’s
side)(8) Side airbag moduleT3: 10 (1.0, 7.2)
(9) Wiring harness CTRT4: 20 (2.0, 14.5)
(4) Airbag module ASSY (Passen-
ger’s side)(10) Wiring harness frontT5: 25 (2.5, 18.1)
(11) Front sub sensor
AB-00685
T3
T2
T5
T3
T4(2)(4)
(3) (1)
(2)
(10)
(11)
(9)
(7)(6) (5)
(8)T2
T1
Page 103 of 2870

AB-3
AIRBAG SYSTEM
General Description
B: CAUTION
When servicing a vehicle, be sure to turn the ig-
nition switch to OFF, disconnect the ground cable
from battery, and wait for more than 20 seconds
before starting work.
The airbag system is fitted with a backup power
source. If the airbag system is serviced within 20
seconds after the ground cable is disconnected, it
may inflate.
If the airbag warning light illuminates, repair the
vehicle immediately. Airbag or pretensioner may in-
flate incorrectly, or not inflate in collision.
If sensors, airbag module, airbag control module,
pretensioner or harness are deformed or damaged,
replace them with new parts.
When checking the airbag system, be sure to
use a digital circuit tester.
Infinitesimal electric current in an analog circuit
tester may cause the airbag to activate erroneous-
ly. When checking, use a test harness (1). Do not
directly apply the tester probe to any connector ter-
minal of the airbag. Damage to the connector termi-
nal may cause the airbag to activate erroneously.
Do not check continuity of either of the airbag
modules for driver, passenger or side, or preten-
sioner.
FU-00009
AB-00120
AB-00121
AB-00122
(1)
AB-00006
Page 104 of 2870

AB-4
AIRBAG SYSTEM
General Description
Do not drop the airbag modulator parts, subject
them to high temperature over 93°C (199°F), or let
water, oil, or grease get on them; otherwise, the in-
ternal parts may be damaged and reliability greatly
lowered.
If any damage, opening, or rust is found on the
airbag system wire harness, do not attempt to re-
pair using soldering equipment. Be sure to replace
the faulty harness with a new genuine part.
Install the wire harness securely with the speci-
fied clips to avoid interference or tangled up with
other parts. Do not allow water or oil to come in contact with
the connector terminals. Do not touch the connec-
tor terminals.
Either of the airbag modules for driver, passen-
ger or side, or pretensioner must not be disassem-
bled.
The removed front seat with the airbag module
must be kept at least 200 mm (8 in) away from walls
and other objects.
Do not use the airbag or pretensioner parts from
other vehicles. Always replace defective parts with
new ones.
Never reuse a deployed airbag or pretensioner.
When painting or performing sheet metal work
on the front part of the vehicle, including the front
wheel apron, front fender, and front side frame, re-
move the front sub sensors and wire harness of the
airbag system.
AB-00123
AB-00124
AB-00125
(1) More than 200 mm (8 in)
AB-00126
AB-00779
AB-00128
(1)