Subaru Legacy 2003 Service Manual
  1. Manuals
  2. Brands
  3. Subaru Manuals
  4. Automobile
  5. 2003 Legacy
  6. Service manual

Subaru Legacy 2003 Service Manual

Hide thumbs Also See for Legacy 2003:
Table of Contents

Advertisement

Quick Links

See also: Service Manual , Owner's Manual
2003 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 (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
EXTERIOR/INTERIOR TRIM
AC
AC
AB
AB
SB
LI
WW
ET
COM
GW
BS
IDI
SE
SL
SR
EI
EB
EI
G2300GE7

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Legacy 2003 and is the answer not in the manual?

Questions and answers

Related Manuals for Subaru Legacy 2003

Summary of Contents for Subaru Legacy 2003

  • Page 1: Body Section

    (HEATER, VENTILATOR AND A/C) HVAC SYSTEM (DIAGNOSTICS) AIRBAG SYSTEM AIRBAG SYSTEM (DIAGNOSTICS) This service manual has been prepared to provide SUBARU service personnel SEAT BELT SYSTEM with the necessary information and data for the correct maintenance and repair of SUBARU vehicles.
  • Page 2 2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX BODY SECTION CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM (DIAGNOSTICS) IMMOBILIZER (DIAGNOSTICS) G2300GE7...

  • Page 3: Table Of Contents

    Basic Diagnostic Procedure ................2 General Description ..................3 Electrical Components Location..............5 Immobilizer Control Module I/O Signal............6 Subaru Select Monitor.................7 Read Diagnostic Trouble Code (DTC) ............8 Clear Memory Mode..................9 Diagnostic Procedure for Immobilizer Indicator Light........10 List of Diagnostic Trouble Code (DTC) .............16...

  • Page 4: Basic Diagnostic Procedure

    Check DTC. <Ref. Check engine 1) Turn ignition switch OFF. to IM-16, List of starting failure. 2) Connect the Subaru Select Monitor to data Diagnostic Trou- link connector. <Ref. to IM-7, HOW TO ble Code (DTC).> USE SUBARU SELECT MONITOR, Go to step 6.

  • Page 5: General Description

    GENERAL DESCRIPTION IMMOBILIZER (DIAGNOSTICS) 2. General Description • When repeatedly turning ignition ON or OFF while diagnostic items are being checked, it A: CAUTION should be switched in cycles of “ON” for at least 5 seconds → → → → “OFF” for at least 8 seconds. CAUTION: •...
  • Page 6 GENERAL DESCRIPTION IMMOBILIZER (DIAGNOSTICS) B: PREPARATION TOOL 1. SPECIAL TOOLS ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS 24082AA210 CARTRIDGE Troubleshooting for electrical systems. (Newly adopted tool) ST24082AA210 22771AA030 SELECT MONITOR Troubleshooting for electrical systems. • English: 22771AA030 (Without printer) • German: 22771AA070 (Without printer) •...

  • Page 7: Electrical Components Location

    ELECTRICAL COMPONENTS LOCATION IMMOBILIZER (DIAGNOSTICS) 3. Electrical Components Location A: LOCATION ( 2 ) ( 1 ) ( 4 ) ( 3 ) IM-00040 (1) Antenna (3) Immobilizer control module (IMM ECM) (2) Immobilizer indicator light (LED bulb) (4) Transponder NOTE: IMM ECM location for RHD model is symmetrically opposite.

  • Page 8: Immobilizer Control Module I/O Signal

    IMMOBILIZER CONTROL MODULE I/O SIGNAL IMMOBILIZER (DIAGNOSTICS) 4. Immobilizer Control Module I/O Signal A: SCHEMATIC <Ref. to WI-236, SCHEMATIC, Immobilizer System.> IM-6...

  • Page 9: Subaru Select Monitor

    ( 1 ) 1) Prepare the Subaru Select Monitor kit. CC-00045 (1) Power switch 6) Using the Subaru Select Monitor, call up any DTCs and various data, and then record them. CC-00028 2. READ DIAGNOSTIC TROUBLE CODE 2) Connect the diagnosis cable to Subaru Select (DTC) FOR ENGINE.

  • Page 10: 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 diagnostic trouble codes, refer to the List of Diagnostic Trouble Code (DTC). <Ref. to IM-16, List of Diagnostic Trouble Code (DTC).>...

  • Page 11: Clear Memory Mode

    {Clear Memory}, and then press the [YES] key. 5) When the ‘Done’ and ‘Turn Ignition Switch OFF’ are shown on the display screen, turn the Subaru Select Monitor and ignition switch to OFF. NOTE: • After the memory has been cleared, the ISC must be initialized.

  • Page 12: Diagnostic Procedure For Immobilizer Indicator Light

    DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT IMMOBILIZER (DIAGNOSTICS) 8. Diagnostic Procedure for Immobilizer Indicator Light A: INSPECTION 1. CHECK IMMOBILIZER INDICATOR CIRCUIT WIRING DIAGRAM: • Non-TURBO model BATTERY SBF-1 M/B NO. 2 IGNITION SWITCH SBF-5 SBF-4 F/B NO. 11 : LHD MODEL COMBI- IMMOBILIZER : RHD MODEL...
  • Page 13 DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT IMMOBILIZER (DIAGNOSTICS) • TURBO model BATTERY SBF-1 M/B NO. 2 IGNITION SWITCH SBF-5 SBF-4 F/B NO. 11 COMBI- IMMOBILIZER NATION INDICATOR METER LIGHT ENGINE CONTROL B135 IMMOBILIZER CONTROL MODULE B141 MODULE B141 1 2 3 A1 A2 A4 A5 A6 1 2 3...
  • Page 14 DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT IMMOBILIZER (DIAGNOSTICS) Step Value CHECK IMMOBILIZER INDICATOR LIGHT Indicator light comes on. Go to step 2. Go to step 5. COMES ON. 1) Turn ignition switch OFF. 2) Disconnect harness connector from IMM ECM. 3) Connect a resistor (750 Ω) between IMM ECM harness connector terminal No.
  • Page 15 DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT IMMOBILIZER (DIAGNOSTICS) Step Value 10 Ω CHECK COMBINATION METER CIRCUIT. Faulty LED bulb. Repair harness or Measure resistance between IMM ECM har- Replace combina- connector. ness connector terminal and combination tion meter printed meter harness connector terminal. circuit.

  • Page 16: Wiring Diagram

    DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT IMMOBILIZER (DIAGNOSTICS) 2. CHECK KEY SWITCH CIRCUIT WIRING DIAGRAM: BATTERY M/B No. 6 B100 : LHD MODEL : RHD MODEL KEY WARNING SWITCH B141 B141 1 2 3 8 9 10 11 6 7 8 9 10 11 12 12 13 14 15 16 17 18 19 20 21 22 23 24 IM-00051 IM-14...
  • Page 17 DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT IMMOBILIZER (DIAGNOSTICS) Step Value CHECK POWER SUPPLY CIRCUIT. 10 V Go to step 2. Check harness for 1) Disconnect harness connector from key open or short warning switch. between key warn- 2) Measure voltage between key warning ing switch and switch harness connector terminal and fuse.

  • Page 18: List Of Diagnostic Trouble Code (Dtc)

    LIST OF DIAGNOSTIC TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) 9. List of Diagnostic Trouble Code (DTC) A: LIST Item appearing on select monitor screen Contents of diagnosis Index No. Item Without With <Ref. to IM-17, DTC P1571 REFER- Reference Code Incompati- Reference code incompatibility ENCE CODE INCOMPATIBILITY, P1571...

  • Page 19: Diagnostic Procedure With Trouble Code (Dtc)

    DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) 10.Diagnostic Procedure with Trouble Code (DTC) A: DTC P1571 REFERENCE CODE INCOMPATIBILITY DIAGNOSIS: • Reference code incompatibility between IMM ECM and ECM Step Value PERFORM TEACHING OPERATION ON IG- Teaching operation for all keys Replace ECM NITION KEY.
  • Page 20 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) B: DTC P1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT) DIAGNOSIS: • Communication failure between IMM ECM and ECM WIRING DIAGRAM: • Non-TURBO IGNITION BATTERY SWITCH SBF-1 SBF-4 F/B No. 11 SBF-5 : LHD MODEL : RHD MODEL : 4-CYLINDER ENGINE MODEL : 6-CYLINDER ENGINE MODEL...
  • Page 21 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) • TURBO model IGNITION BATTERY SWITCH SBF-1 SBF-4 F/B No. 11 SBF-5 B135 B141 B141 B135 1 2 3 6 7 8 9 10 11 12 11 12 13 14 15 16 17 18 19 20 21 26 27 28 IM-00061...
  • Page 22 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) Step Value CHECK POWER SUPPLY CIRCUIT OF IMM 10 V Go to step 2. Check harness for ECM. open or short 1) Turn ignition switch OFF. between IMM 2) Disconnect harness connector from IMM ECM and fuse.
  • Page 23 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) Step Value 10 Ω CHECK HARNESS BETWEEN IMM ECM Go to step 6. Repair open circuit AND ECM. of harness Measure resistance between IMM ECM har- between IMM ness connector terminal and ECM harness ECM and ECM.
  • Page 24 FU(H4SO)-45, ECM. Engine Control 3) Perform interface check. <Ref. to IM-7, Module.> or <Ref. INTERFACE CHECK, OPERATION, to FU(H4SOw/ Subaru Select Monitor.> oOBD)-42, Engine Does “Commun. Line Shorted to Ground” Control Module.> appear on screen? or <Ref. to FU(H6DO)-46, Engine Control Module.>...
  • Page 25 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) C: DTC P1574 KEY COMMUNICATION FAILURE DIAGNOSIS: • Failure of IMM ECM to verify key (transponder) ID code Step Value −30 to 30 V (Approximately 0.1 CHECK IMM ECM FUNCTION. Go to step 2. Replace IMM ECM Insert the key to ignition switch (LOCK posi- second after inserting the key.)
  • Page 26 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) D: DTC P0153 INCORRECT IMMOBILIZER KEY (USE OF UNREGISTERED KEY) DIAGNOSIS: • Use of unregistered key in IMM ECM Step Value PERFORM TEACHING OPERATION ON IG- Teaching operation for all keys Replace all ignition NITION KEY.
  • Page 27 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) E: DTC P1576 EGI CONTROL MODULE EEPROM DIAGNOSIS: • ECM malfunctioning 1. REPLACE ECM. Replace ECM. <Ref. to FU(H4SO)-45, Engine Control Module.> <Ref. to FU(H4SOw/oOBD)-42, Engine Control Module.> <Ref. to FU(H6DO)-46, Engine Control Module.> <Ref.
  • Page 28 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) G: DTC P1570 ANTENNA DIAGNOSIS: • Faulty antenna WIRING DIAGRAM: B142 B142 IM-00066 IM-26...
  • Page 29 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) Step Value 10 Ω CHECK ANTENNA CIRCUIT. Go to step 2. Replace antenna. 1) Turn ignition switch OFF. <Ref. to SL-37, 2) Disconnect harness antenna connector Immobilizer from IMM ECM. <Ref. to SL-37, Immobi- Antenna.>...
  • Page 30 DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC) IMMOBILIZER (DIAGNOSTICS) Step Value CHECK IGNITION KEY (TRANSPONDER). Engine starts. Replace ignition Replace IMM ECM 1) Remove key from ignition switch. key (including the <Ref. to SL-36, 2) Start engine using other keys that have transponder).

Table of Contents