Subaru 2001 Forester User manual

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, reassem-
bling, inspection and adjustment of com-
ponents and diagnostics for guidance 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 genu-
ine parts.
All information, illustration and specifica-
tions contained in this manual are based
on the latest product information avail-
able at the time of publication approval.
FUJI HEAVY INDUSTRIES LTD.
2001 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G8050GE6

AIRBAG SYSTEM (DIAGNOSTICS) AB
Page
1. Basic Diagnostic Procedure........................................................................2
2. Check List for Interview...............................................................................3
3. General Description.....................................................................................4
4. Electrical Components Location................................................................16
5. A/B Control Module I/O Signal..................................................................18
6. Airbag Connector ......................................................................................24
7. Airbag Warning Light Illumination Pattern.................................................26
8. Read Diagnostic Trouble Code.................................................................27
9. Inspection Mode........................................................................................28
10. Clear Memory Mode..................................................................................29
11. Airbag Warning Light Failure ....................................................................30
12. List of Diagnostic Trouble Code................................................................36
13. Diagnostic Chart with Trouble Code.........................................................39

1. Basic Diagnostic Procedure
S002627
A: PROCEDURE S002501E45
No. Step Check Yes No
1 Read Diagnostic Trouble Code.
<Ref. to AB-27 Read Diagnostics Trouble
Code.>
Is the normal code being
detected? Finish the diagno- sis. Go to step 2.
2 Read Diagnostic Trouble Code.
<Ref. to AB-27 Read Diagnostics Trouble
Code.>
Is the trouble code being
detected? Go to step 3.Goto“Airbag Warning Light
Failure”. <Ref. to
AB-30 Airbag
Warning Light
Failure.>
3 Perform the diagnosis.
1) Judge the possible cause from “List of
Diagnostic Trouble Code”<Ref. to AB-36 List
of Diagnostic Trouble Code.>.
2) Inspect using “Diagnostic Chart with
Trouble Code”. (DTC)
3) Repair the cause of the trouble.
4) Perform the clear memory mode. <Ref. to
AB-29 Clear Memory Mode.>
5) Perform the inspection mode. <Ref. to
AB-28 Inspection Mode.>
6) Read diagnostic trouble code.
Is the trouble code being
detected? Perform the pro- cedure 1) to 5) in
step 3.
Finish the diagno-
sis.
AB-2
BASIC DIAGNOSTIC PROCEDURE
Airbag System (Diagnostics)

2. Check List for Interview S002502
A: CHECK S002502A04
Customer’s Name Inspector’s Name
Date Vehicle Brought In / / Registration No.
Odometer Reading Km
Miles Vin No.
Date Problem Occurred / / Registration Year / /
Weather 쏔Fine 쏔Cloudy 쏔Rainy 쏔Snowy 쏔Other:
Temperature °C(°F)
Road Condition 쏔Level road 쏔Uphill 쏔Downhill 쏔Rough road 쏔Other:
Vehicle Operation 쏔Starting 쏔Idling 쏔Driving (쏔Constant Speed 쏔Acceleration 쏔Deceleration
쏔Steering wheel turn 쏔Other: )
Details of Problem
Check Airbag Warning Light 쏔Remains ON 쏔Remains OFF
Check DTC 쏔Normal Code 쏔Trouble Code: (Code: )
AB-3
CHECK LIST FOR INTERVIEW Airbag System (Diagnostics)

3. General Description S002001
A: CAUTION S002001A03
쐌When servicing a vehicle, be sure to turn the
ignition switch OFF, disconnect the ground cable
from the battery, and wait for more than 20 sec-
onds before starting work.
쐌The 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.
G5M0292
쐌If sensors, airbag module, airbag control module
and harness are deformed or damaged, replace
them with new genuine parts.
쐌Do not use the airbag system on other vehicles.
When replacing parts, be sure to replace them with
new parts.
G5M0291
쐌When checking the system, be sure to use a
digital circuit tester.
Use of an analog circuit tester may cause the air-
bag to activate erroneously.
쐌When checking, use a test harness. Do not
directly apply the tester probe to any connector
terminal of the airbag.
G5M0293
G5M0294
쐌Do not check continuity of the airbag module
(driver, passenger, and side).
G5M0302
AB-4
GENERAL DESCRIPTION
Airbag System (Diagnostics)

쐌Do not allow water or oil to come in contact with
the connector terminals. Do not touch the connec-
tor terminals.
G5M0298
쐌The airbag module (driver, passenger, and side)
must not be disassembled.
쐌The airbag module cannot be used again once
inflated.
G5M0299
쐌Do 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
internal parts may be damaged and reliability
greatly lowered.
G5M0295
쐌If any damage, opening or rust is found on the
airbag system wire harness, do not attempt to
repair using soldering equipment. Be sure to
replace the faulty harness with a new genuine part.
G5M0296
쐌Install the wire harness securely with the speci-
fied clips to avoid interference or tangled up with
other parts.
G5M0297
AB-5
GENERAL DESCRIPTION Airbag System (Diagnostics)

쐌When painting or performing sheet metal work
on the front part of the vehicle, including the front
wheel apron, front fender, and front side frame,
remove the front sub sensors and wire harness of
the airbag system.
쐌When painting or performing sheet metal work
on the side of the vehicle, including the side sill,
center pillar, and front and rear doors, remove the
side airbag sensors and wire harness of the airbag
system.
G5M0310
쐌The removed front seat with the airbag module
must be kept at least 200 mm (8 in) away from
walls and other objects.
B5M1072A
쐌When storing a removed airbag module, do not
place any objects on it or pile airbag modules on
top of each other. If the airbag inflates for some
reason when it is placed with its pad side facing
downward or under any object, a serious accident
may result.
AB-6
GENERAL DESCRIPTION
Airbag System (Diagnostics)

G5M0604
AB-7
GENERAL DESCRIPTION Airbag System (Diagnostics)

쐌Do not discard undeployed airbag modules.
They could easily cause a serious accident if acci-
dentally deployed.
B: INSPECTION S002001A10
Before diagnosing, check the following items that
might be related to the engine problem:
1. BATTERY S002001A1001
Measure battery voltage and specific gravity of
electrolyte.
Standard voltage: 12V
Specific gravity: Above 1.260
AB-8
GENERAL DESCRIPTION
Airbag System (Diagnostics)

C: PREPARATION TOOL S002001A17
CAUTION:
Be sure to use specified test harness A, F, G, H and I or I2 when measuring voltage, resistance, etc.
of AIRBAG system component parts.
1. TEST HARNESS A S002001A1701
B5M0112A
AB-9
GENERAL DESCRIPTION Airbag System (Diagnostics)