Subaru 2004 LEGACY Manuel utilisateur

FUJI HEAVY INDUSTRIES LTD. G2320GE7

2004 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 (AUTO A/C)

(DIAGNOSTICS) AC(diag)

AIRBAG SYSTEM AB

AIRBAG SYSTEM (DIAGNOSTICS) AB(diag)

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

2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX

BODY SECTION

G2320GE7

CRUISE CONTROL SYSTEM CC

CRUISE CONTROL SYSTEM

(DIAGNOSTICS) CC(diag)

IMMOBILIZER (DIAGNOSTICS) IM(diag)

LAN SYSTEM (DIAGNOSTICS) LAN(diag)

IMMOBILIZER (DIAGNOSTICS)

IM(diag)

Page

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

2. General Description ....................................................................................4

3. Electrical Component Location ...................................................................6

4. Immobilizer Control Module I/O Signal........................................................7

5. Subaru Select Monitor.................................................................................8

6. Read Diagnostic Trouble Code (DTC)........................................................9

7. Clear Memory Mode..................................................................................10

8. Diagnostics Chart for Immobilizer Indicator Light......................................11

9. List of Diagnostic Trouble Code (DTC).....................................................15

10. Diagnostic Procedure with Diagnostic Trouble Code (DTC).....................17

IM(diag)-2

IMMOBILIZER (DIAGNOSTICS) Basic Diagnostic Procedure

1. Basic Diagnostic Procedure

A: PROCEDURE

Step Check Yes No

1 CHECK IMMOBILIZER WARNING LIGHT.

1) Turn the ignition switch to “OFF” or “ACC”.

2) Wait for more than 60 seconds.

Does the immobilizer warning

light blink? Go to step 2. Check the immobi-

lizer warning light

circuit. <Ref. to

IM(diag)-11,

CHECK IMMOBI-

LIZER INDICA-

TOR CIRCUIT,

INSPECTION,

Diagnostics Chart

for Immobilizer

Indicator Light.>

2 CHECK KEY SWITCH.

Remove the key from ignition switch. Does the immobilizer warning

light blink within 1 second after

removing ignition key?

Go to step 3. Check the key

switch circuit.

<Ref. to IM(diag)-

13, CHECK KEY

SWITCH CIR-

CUIT, INSPEC-

TION, Diagnostics

Chart for Immobi-

lizer Indicator

Light.>

3 CHECK IMMOBILIZER WARNING LIGHT.

Turn the ignition switch to ON. Does the immobilizer warning

light off? Go to step 5. Go to step 4.

4 CHECK ENGINE START.

Turn the ignition switch to START. Does the starter operate? Check the LAN

communication cir-

cuit. <Ref. to

LAN(diag)-2,Basic

Diagnostic Proce-

dure.>

Check the DTC

display (body inte-

grated unit). Go to

step 7.

5 CHECK ENGINE START.

Turn the ignition switch to START. Does the starter operate? Go to step 6. Check the LAN

communication cir-

cuit. <Ref. to

LAN(diag)-2,Basic

Diagnostic Proce-

dure.>

6 CHECK ENGINE START.

Turn the ignition switch to START. Does the engine start? Immobilizer sys-

tem is OK. Check the DTC

display (ECM). Go

to step 7.

7 CHECK INDICATION OF DTC ON DISPLAY.

1) Turn the ignition switch to OFF.

2) Connect the Subaru Select Monitor to data

link connector. <Ref. to IM(diag)-8, Subaru

Select Monitor.>

3) Turn the ignition switch and Subaru Select

Monitor switch to ON.

4) Read DTC on display.

Is the DTC displayed on

screen? Go to step 8. Repair the related

parts.

IM(diag)-3

IMMOBILIZER (DIAGNOSTICS)

Basic Diagnostic Procedure

8 PERFORM THE DIAGNOSIS.

1) Inspect using the “Diagnostic Procedure

with Diagnostic Trouble Code (DTC)”.

<Ref. to IM(diag)-17, Diagnostic Procedure

with Diagnostic Trouble Code (DTC).>

2) Repair the trouble cause.

3) Perform clear memory mode.

4) Read DTC again.

Is the DTC displayed on

screen? Inspect using the

“Diagnostic Proce-

dure with Diagnos-

tic Trouble Code

(DTC)”. <Ref. to

IM(diag)-17, Diag-

nostic Procedure

with Diagnostic

Trouble Code

(DTC).>

Finish the diagno-

sis.

Step Check Yes No

IM(diag)-4

IMMOBILIZER (DIAGNOSTICS) General Description

2. General Description

A: CAUTION

CAUTION:

• All airbag system wiring harnesses and con-

nectors are yellow. Do not use the electrical

test equipment on these circuits.

• Be careful not to damage the airbag system

wiring harness.

• While diagnostic items are being checked, do

not operate radios, portable telephones, etc.

which emit electromagnetic waves near or in-

side the vehicle.

• When turning the ignition switch to ON or

OFF while diagnostic items are being checked,

do not allow keys with different ID codes close

to the ignition switch. If the ignition key is in a

key holder, remove it from the holder before

carrying out diagnosis.

• When repeatedly turning the ignition switch

to ON or OFF while diagnostic items are being

checked, it should be switched in cycles of

“ON” for at least 5 seconds→“OFF” for at least

8 seconds.

• If the engine fails to start with a registered ig-

nition key, detach the ignition key from ignition

switch and wait for approx. 1 second until im-

mobilizer indicator light begins to flash. And

then start the engine again.

• Before checking the diagnostic items, obtain

all keys for the vehicle to be checked pos-

sessed by owner.

IM-00001

IM-00002

(1) Ignition switch position

(2) Sec.

IM-00003

OFF

(2)

(1)

IM(diag)-5

IMMOBILIZER (DIAGNOSTICS)

General Description

B: PREPARATION TOOL

1. SPECIAL TOOL

2. GENERAL TOOL

ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS

24082AA230 CARTRIDGE Troubleshooting for electrical system.

22771AA030 SUBARU SELECT

MONITOR KIT Troubleshooting for electrical system.

• English: 22771AA030 (Without printer)

• German: 22771AA070 (Without printer)

• French: 22771AA080 (Without printer)

• Spanish: 22771AA090 (Without printer)

TOOL NAME REMARKS

Circuit tester Used for measuring resistance, voltage and ampere.

ST24082AA23

ST22771AA03

IM(diag)-6

IMMOBILIZER (DIAGNOSTICS) Electrical Component Location

3. Electrical Component Location

A: LOCATION

NOTE:

Body integrated unit location for RHD model is symmetrically opposite.

(1) Antenna (3) Body integrated unit (4) Transponder

(2) Immobilizer indicator light (LED

bulb)

IM-00083

(2)

(4)

(1)

(3)

IM(diag)-7

IMMOBILIZER (DIAGNOSTICS)

Immobilizer Control Module I/O Signal

4. Immobilizer Control Module

I/O Signal

A: WIRING DIAGRAM

1. IMMOBILIZER

<Ref. to WI-246, WIRING DIAGRAM, Immobilizer

System.>

IM(diag)-8

IMMOBILIZER (DIAGNOSTICS) Subaru Select Monitor

5. Subaru Select Monitor

A: OPERATION

1. HOW TO USE SUBARU SELECT MONI-

TOR

1) Prepare the Subaru Select Monitor kit.

2) Connect the diagnosis cable to Subaru Select

Monitor.

3) Insert the cartridge to Subaru Select Monitor.

4) Connect the Subaru Select Monitor to data link

connector.

(1) Data link connector is located in the lower

portion of the instrument panel (on the driver’s

side).

(2) Connect the diagnosis cable to data link

connector.

CAUTION:

Do not connect the scan tools except for Suba-

ru Select Monitor.

5) Turn the ignition switch to ON (engine OFF), and

the Subaru Select Monitor switch to ON.

6) Using the Subaru Select Monitor, call up DTCs

and various data, then record them.

2. READ DIAGNOSTIC TROUBLE CODE

(DTC) FOR ENGINE AND BODY INTEGRAT-

ED UNIT

Refer to Read Diagnostic Trouble Code for infor-

mation about how to indicate DTC. <Ref. to IM(di-

ag)-9, Read Diagnostic Trouble Code (DTC).>

3. COMMUNICATION LINE CHECK

NOTE:

The communication line between ECM and body

integrated module can be checked in “System Op-

eration Check Mode”. This is referred to as “Com-

munication line check”.

1) Connect the Subaru Select Monitor.

2) On the «System operation check mode» display,

select the {security system}.

3) Start the communication line check.

4) Is «Communication Line not Shorted» displayed

on screen?

If displayed, go to step 5).

If “NO”, go to step 6).

5) After diagnostic results, it is determined that the

circuit is not shorted. Finish the communication line

check.

6) If a problem is detected, repair the trouble

cause. <Ref. to IM(diag)-22, DTC P1572 IMM CIR-

CUIT FAILURE (EXCEPT ANTENNA CIRCUIT),

Diagnostic Procedure with Diagnostic Trouble

Code (DTC).>

CC-0002

IM-00084

(1) Power switch

CC-0004

(1)

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