Subaru 2004 LEGACY Service Manual
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2004 LEGACY SERVICE MANUAL

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.
FUJI HEAVY INDUSTRIES LTD.
QUICK REFERENCE INDEX
HVAC SYSTEM
(HEATER, VENTILATOR AND A/C)
HVAC SYSTEM (AUTO A/C)
(DIAGNOSTICS)
AIRBAG SYSTEM
AIRBAG SYSTEM (DIAGNOSTICS)
SEAT BELT SYSTEM
LIGHTING SYSTEM
WIPER AND WASHER SYSTEMS
ENTERTAINMENT
COMMUNICATION SYSTEM
GLASS/WINDOWS/MIRRORS
BODY STRUCTURE
INSTRUMENTATION/DRIVER INFO
SEATS
SECURITY AND LOCKS
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF)
EXTERIOR/INTERIOR TRIM
EXTERIOR BODY PANELS
AC
AC(diag)
AB
AB(diag)
SB
LI
WW
ET
COM
GW
BS
IDI
SE
SL
SR
EI
EB
G2320GE7

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Summary of Contents for Subaru 2004 LEGACY

  • Page 1: Body Section

    2004 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX BODY SECTION HVAC SYSTEM (HEATER, VENTILATOR AND A/C) HVAC SYSTEM (AUTO A/C) AC(diag) (DIAGNOSTICS) AIRBAG SYSTEM AIRBAG SYSTEM (DIAGNOSTICS) AB(diag) This service manual has been prepared to provide SUBARU service personnel SEAT BELT SYSTEM...
  • Page 2 2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX BODY SECTION CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM CC(diag) (DIAGNOSTICS) IMMOBILIZER (DIAGNOSTICS) IM(diag) LAN SYSTEM (DIAGNOSTICS) LAN(diag) G2320GE7...
  • Page 3: Table Of Contents

    Basic Diagnostic Procedure ................2 General Description ..................4 Electrical Component Location ..............6 Immobilizer Control Module I/O Signal............7 Subaru Select Monitor.................8 Read Diagnostic Trouble Code (DTC) ............9 Clear Memory Mode..................10 Diagnostics Chart for Immobilizer Indicator Light........11 List of Diagnostic Trouble Code (DTC) .............15...
  • Page 4: Basic Diagnostic Procedure

    Repair the related 1) Turn the ignition switch to OFF. screen? parts. 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.
  • Page 5 Basic Diagnostic Procedure IMMOBILIZER (DIAGNOSTICS) Step Check PERFORM THE DIAGNOSIS. Is the DTC displayed on Inspect using the Finish the diagno- 1) Inspect using the “Diagnostic Procedure screen? “Diagnostic Proce- sis. with Diagnostic Trouble Code (DTC)”. dure with Diagnos- <Ref. to IM(diag)-17, Diagnostic Procedure tic Trouble Code with Diagnostic Trouble Code (DTC).>...
  • Page 6: General Description

    General Description IMMOBILIZER (DIAGNOSTICS) 2. General Description • When repeatedly turning the ignition switch to ON or OFF while diagnostic items are being A: CAUTION checked, it should be switched in cycles of “ON” for at least 5 seconds → “OFF” for at least CAUTION: 8 seconds.
  • Page 7: Special Tool

    TOOL NUMBER DESCRIPTION REMARKS 24082AA230 CARTRIDGE Troubleshooting for electrical system. ST24082AA230 22771AA030 SUBARU SELECT Troubleshooting for electrical system. MONITOR KIT • English: 22771AA030 (Without printer) • German: 22771AA070 (Without printer) • French: 22771AA080 (Without printer) • Spanish: 22771AA090 (Without printer) ST22771AA030 2.
  • Page 8: Electrical Component Location

    Electrical Component Location IMMOBILIZER (DIAGNOSTICS) 3. Electrical Component Location A: LOCATION IM-00083 Antenna Body integrated unit Transponder Immobilizer indicator light (LED bulb) NOTE: Body integrated unit location for RHD model is symmetrically opposite. IM(diag)-6...
  • Page 9: Immobilizer Control Module I/O Signal

    Immobilizer Control Module I/O Signal IMMOBILIZER (DIAGNOSTICS) 4. Immobilizer Control Module I/O Signal A: WIRING DIAGRAM 1. IMMOBILIZER <Ref. to WI-246, WIRING DIAGRAM, Immobilizer System.> IM(diag)-7...
  • Page 10: Subaru Select Monitor

    1. HOW TO USE SUBARU SELECT MONI- 1) Prepare the Subaru Select Monitor kit. CC-00045 (1) Power switch 6) Using the Subaru Select Monitor, call up DTCs and various data, then record them. CC-00028 2. READ DIAGNOSTIC TROUBLE CODE 2) Connect the diagnosis cable to Subaru Select (DTC) FOR ENGINE AND BODY INTEGRAT- Monitor.
  • Page 11: Read Diagnostic Trouble Code (Dtc)

    {History Diagnostic Code(s)}, and then press the [YES] key. NOTE: • For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MAN- UAL. • For detailed concerning DTC, refer to the List of DTC. <Ref. to IM(diag)-15, LIST, List of Diagnostic Trouble Code (DTC).>...
  • Page 12: Clear Memory Mode

    4) On the «Engine Diagnosis» display screen, se- lect the {Clear Memory} and press the [YES] key. 5) When the ‘Done’ are shown on the display screen, turn the Subaru Select Monitor and ignition switch to OFF. NOTE: • After the memory has been cleared, the idle air control solenoid valve must be initialized.
  • Page 13: Diagnostics Chart For Immobilizer Indicator Light

    Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER (DIAGNOSTICS) 8. Diagnostics Chart for Immobilizer Indicator Light A: INSPECTION 1. CHECK IMMOBILIZER INDICATOR CIRCUIT WIRING DIAGRAM: BATTERY SBF-1 SBF-9 F/B No.7 IGNITION SWITCH SBF-4 F/B No.12 R167 i102 M/B No.8 COMBINATION METER IMMOBILIZER INDICATOR LIGHT...
  • Page 14 Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER (DIAGNOSTICS) Step Check CHECK IMMOBILIZER WARNING LIGHT. Does the immobilizer indicator Go to step 2. Go to step 5. 1) Turn the ignition switch to OFF. light illuminate? 2) Disconnect the harness connector from body integrated unit.
  • Page 15 Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER (DIAGNOSTICS) 2. CHECK KEY SWITCH CIRCUIT WIRING DIAGRAM: BATTERY M/B No.14 KEY WARNING SWITCH B350 B281 BODY INTEGRATED UNIT B350 B281 5 6 7 1 2 3 4 11 12 13 14 15 16 17 18 19 22 23 27 28...
  • Page 16 Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER (DIAGNOSTICS) Step Check CHECK POWER SUPPLY CIRCUIT. Is the voltage more than 10 V? Go to step 2. Check the harness 1) Disconnect the harness connector from key for open or short warning switch. circuit between 2) Turn the ignition switch to “ACC”...
  • Page 17: List Of Diagnostic Trouble Code (Dtc)

    List of Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) 9. List of Diagnostic Trouble Code (DTC) A: LIST 1. ECM Item Contents of diagnosis Index No. <Ref. to IM(diag)-17, DTC P0513 INCOR- Incorrect immobilizer key (Use of RECT IMMOBILIZER KEY, Diagnostic Pro- P0513 Incorrect Immobilizer Key unregistered key in body integrated...
  • Page 18 • DTC B0402 is recorded as freeze frame data when the ignition switch is turned to OFF. When trying to start the engine with unregistered immobilizer key, DTC is not displayed on Subaru Select Monitor immediately. Turn the ignition switch to OFF once and turn to ON again before checking DTC. At this time (when turning the ignition switch to ON again), be careful that the DTC is displayed as freeze frame data even with the reg- istered immobilizer key.
  • Page 19: Diagnostic Procedure With Diagnostic Trouble Code (Dtc)

    Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) 10.Diagnostic Procedure with Diagnostic Trouble Code (DTC) A: DTC P0513 INCORRECT IMMOBILIZER KEY DTC DETECTING CONDITION: Incorrect immobilizer key (Use of unregistered key in body integrated unit) Step Check PERFORM TEACHING OPERATION ON IG- Is the teaching operation for all END.
  • Page 20 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) B: DTC P1570 ANTENNA DTC DETECTING CONDITION: Faulty antenna WIRING DIAGRAM: B351 B281 BODY INTEGRATED UNIT B351 B281 5 6 7 11 12 13 14 15 16 17 18 19 20 21 22 23 27 28 IM-00079...
  • Page 21 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) Step Check CHECK ANTENNA CIRCUIT. Is the resistance less than 10 Go to step 2. Replace the Ω? 1) Turn the ignition switch to OFF. antenna. <Ref. to 2) Disconnect the harness connector from SL-50, Immobi- antenna.
  • Page 22 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) Step Check CHECK IGNITION KEY (TRANSPONDER). Does the engine start? Replace all the Replace the body 1) Remove the key from ignition switch. ignition keys integrated unit 2) Start the engine using other keys that have (including tran- <Ref.
  • Page 23 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) C: DTC P1571 REFERENCE CODE INCOMPATIBILITY DTC DETECTING CONDITION: Reference code incompatibility between body integrated unit and ECM Step Check PERFORM TEACHING OPERATION ON IG- Is the teaching operation for all END.
  • Page 24: Wiring Diagram

    Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) D: DTC P1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT) DTC DETECTING CONDITION: Communication failure between body integrated unit and ECM WIRING DIAGRAM: IGNITION BATTERY SWITCH SBF-1 SBF-4 F/B No.12 SBF-9 F/B No.7 M/B No.8 : 2.0 L NA MODEL AND 2.5 L KS, KA MODEL...
  • Page 25 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) Step Check CHECK BODY INTEGRATED UNIT POWER Is the voltage more than 10 V? Go to step 2. Check the harness SUPPLY CIRCUIT. for open or short 1) Turn the ignition switch to OFF. circuit between 2) Disconnect the harness connector from body integrated...
  • Page 26 (ECM).> <Ref. to 3) Start the communication line check. <Ref. the all ignition keys FU(H4SO 2.5)-36, to IM(diag)-8, COMMUNICATION LINE (including tran- Engine Control CHECK, OPERATION, Subaru Select Moni- sponder). Execute Module (ECM).> tor.> the registration <Ref. to procedure next.
  • Page 27 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) E: DTC P1574 KEY COMMUNICATION FAILURE DTC DETECTING CONDITION: Failure of body integrated unit to verify key (transponder) ID code Step Check Is the voltage −30 to 30 V? CHECK BODY INTEGRATED UNIT FUNC- Go to step 2.
  • Page 28 Diagnostic Procedure with Diagnostic Trouble Code (DTC) IMMOBILIZER (DIAGNOSTICS) H: DTC P1578 METER FAILURE DTC DETECTING CONDITION: Reference code incompatibility between body integrated unit and combination meter 1. CHECK LAN COMMUNICATION SYSTEM Inspect LAN communication system in the following situation. <Ref. to LAN(diag)-2, Basic Diagnostic Proce- dure.>...

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