Subaru 2003 Legacy Manuale utente

FUJI HEAVY INDUSTRIES LTD. G2300GE7

2003 LEGACY 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 (DIAGNOSTICS) AC

AIRBAG SYSTEM AB

AIRBAG SYSTEM (DIAGNOSTICS) AB

SEAT BELT SYSTEM SB

LIGHTING SYSTEM LI

WIPER AND WASHER SYSTEMS WW

ENTERTAINMENT ET

COMMUNICATION SYSTEM COM

GLASS/WINDOWS/MIRRORS GW

BODY STRUCTURE BS

INSTRUMENTATION/DRIVER INFO IDI

SEATS SE

SECURITY AND LOCKS SL

SUNROOF/T-TOP/CONVERTIBLE TOP

(SUNROOF) SR

EXTERIOR/INTERIOR TRIM EI

EXTERIOR BODY PANELS EB

EXTERIOR/INTERIOR TRIM EI

2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX

BODY SECTION

G2300GE7

CRUISE CONTROL SYSTEM CC

CRUISE CONTROL SYSTEM

(DIAGNOSTICS) CC

IMMOBILIZER (DIAGNOSTICS) IM

AIRBAG SYSTEM (DIAGNOSTICS) AB

Page

1. Basic Diagnostic Procedure........................................................................2

2. Check List for Interview...............................................................................3

3. General Description ....................................................................................4

4. Electrical Components Location................................................................15

5. Airbag Connector......................................................................................17

6. Airbag Warning Light Illumination Pattern.................................................19

7. Read Diagnostic Trouble Code (DTC)......................................................20

8. Inspection Mode........................................................................................21

9. Clear Memory Mode..................................................................................22

10. Airbag Warning Light Failure.....................................................................24

11. List of Diagnostic Trouble Code (DTC).....................................................28

12. Diagnostic Chart with Diagnostic Trouble Code (DTC).............................30

AB-2

AIRBAG SYSTEM (DIAGNOSTICS)

BASIC DIAGNOSTIC PROCEDURE

1. Basic Diagnostic Procedure

A: PROCEDURE

Step Value Yes No

1 Read DTC.

<Ref. to AB-20, Read Diagnostic TroubleCode

(DTC).>

Is the normal code being

detected? Finish the diagno-

sis. Go to step 2.

2 Read DTC.

<Ref. to AB-20, Read Diagnostic TroubleCode

(DTC).>

Is the DTC being detected? Go to step 3. Go to “Airbag

Warning Light Fail-

ure”.<Ref. to AB-

24, Airbag Warn-

ing Light Failure.>

3 Perform the diagnosis.

1) Judge the possible cause from “List of

Diagnostic Trouble Code (DTC)”<Ref. to

AB-28, List of Diagnostic Trouble Code

(DTC).> .

2) Inspect using “Diagnostic Chart with Diag-

nostic Trouble Code (DTC)”.

3) Repair the cause of the trouble.

4) Perform the clear memory mode. <Ref. to

AB-22, Clear Memory Mode.>

5) Perform the inspection mode. <Ref. to AB-

21, Inspection Mode.>

6) Read DTC.

Is the DTC being detected? Perform the proce-

dure 1) to 5) in

step 3.

Finish the diagno-

sis.

AB-3

AIRBAG SYSTEM (DIAGNOSTICS)

CHECK LIST FOR INTERVIEW

2. Check List for Interview

A: CHECK

Customer's Name Inspector's Name

Date Vehicle Brought In / / Registration No.

Odometer Reading km

Miles Vin No.

Date Problem Occurred / / Registration Year / /

Weather ❏Fine ❏Cloudy ❏Rainy ❏Snowy ❏Other:

Temperature °C (°F)

Road Condition ❏Level road ❏Uphil ❏Downhill ❏Rough road ❏Others:

Vehicle Operation ❏Starting ❏Idling

❏Driving (❏Constant Speed ❏Acceleration ❏Deceleration

❏Steering wheel turn ❏Other: )

Details of Problem

Check Airbag Warning Light ❏Remains ON ❏Remains OFF

Check DTC ❏Normal Code ❏Trouble Code: (Code: )

AB-4

AIRBAG SYSTEM (DIAGNOSTICS) GENERAL DESCRIPTION

3. General Description

A: CAUTION

•When servicing a vehicle, be sure to turn the ig-

nition switch OFF, disconnect the ground cable

from the battery, and wait formore than20 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

vehicleimmediately.Airbagor pretensionermay in-

flate incorrectly, or not inflate in collision.

•If sensors, airbag module, airbag control module

pretensioner, and harness are deformed or dam-

aged, replace them with new genuine parts.

•Do not use the airbag system and pretensioners

on other vehicles. When replacing parts, be sure to

replace them with new parts.

•When checking the system, be sure to use a dig-

ital circuit tester.

Use of an analog circuit tester may cause the air-

bag to activate erroneously.

•When checking, use a test harness. Do not di-

rectlyapplythe testerprobeto anyconnectortermi-

nal of the airbag.

AB-00002

AB-00120 (1) Test harness

AB-00121

AB-00122

( 1 )

AB-5

AIRBAG SYSTEM (DIAGNOSTICS)

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.

•The airbag module (driver, passenger, and side,

pretensioner) must not be disassembled.

•The airbag module cannot be used again once

inflated.

AB-00123

AB-00124

AB-00125

AB-00126

AB-00127

AB-6

AIRBAG SYSTEM (DIAGNOSTICS) GENERAL DESCRIPTION

•After removal, keep the airbag module with the

pad facing upward on a dry, clean, and flat surface

away from heat and light sources, and moisture

and dust.

•Do not check continuity of the airbag module

(driver, passenger, and side, pretensioner).

•The removed front seat with the airbag module

must be keptat least 200 mm(8 in)away fromwalls

and other objects.

•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.

•When 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.

•Do not discard undeployed airbag modules.

They could easily cause a serious accident if acci-

dentally deployed.

•Do not damage the airbag module or drop it.

(1) More than 200 mm (8 in)

AB-00056

AB-00006

AB-00128

( 1 )

AB-00129

AB-7

AIRBAG SYSTEM (DIAGNOSTICS)

GENERAL DESCRIPTION

•When 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 itis placed with its pad side facing downward or under

any object, a serious accident may result.

(1) Driver side (2) Passenger side

AB-00130

( 1 )

( 2 )

AB-8

AIRBAG SYSTEM (DIAGNOSTICS) GENERAL DESCRIPTION

B: INSPECTION

Before diagnosing, check the following items that

might be related to the engine problem:

1. BATTERY

Measure battery voltage and specific gravity of

electrolyte.

Standard voltage: 12 V

Specific gravity: Above 1.260

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