2004 impreza service manual quick reference index
Contents
1. g T 1 2 s A 5 11218 T4T5T6 T7T8T9 10 1 3 41 16 7 X 8 1 2 3 4 5 7 8 9 1 6 7 8 9 0 11 12 15 16 17 18 19 20 21 22 3 24 25 26 27 28 29 30 12 13 14 15 16 17 18 19 20 21 22 3 4 Li e 1 2 s 4 5 6 7 8 9 SERM 22 10 112 13 145 16 17 18 19 90 21 1121314 1 2 3 4 5 6 7 8 9 10 11 22 23 24 25 26 27 28 29 30 31132 ee oe 5 6 7 8 12113114115 16 17 18 19 20 21 22 23 24 pa rs 16 IM 00089 IM diag 10 Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER DIAGNOSTICS Step Check Yes No CHECK IMMOBILIZER INDICATOR LIGHT COMES ON 1 Turn the ignition switch to OFF 2 Disconnect the harness connector from IMM ECM 3 Connect a resistor 750 between IMM ECM harness connector terminal No 9 and chassis ground Does the indicator light come on Go to step 2 Go to step 5 CHECK IMM ECM GROUND CIRCUIT Measure the resistance between IMM ECM harness connector terminal and chassis ground Connector amp terminal B141 No 2 No 3 Chassis ground Is the resistance less than 10 Q Go to step 3 Repair the open circuit of IMM ECM ground circuit CHECK IMM ECM IGNITION CIRCUIT 1 Turn the ignition switch to ON Engine OFF 2 Measure the voltage between IMM ECM har ness connector terminal an2. 11213456 71819 10111 12113 14 15 16 171819 20 21 22 23 24 25 26 27 28 122124125106 27 28 14 15 16 1718 19 20 3 ED JABE 11213121516 7T8 9 io r 775213 715 5 6 7 8 TER 1213114051617118119 00 01 22123 24 etila font slelzla 31411516 00090 IM diag 19 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS Step Check Yes No CHECK POWER SUPPLY CIRCUIT OF IMM ECM 1 Turn the ignition switch to OFF 2 Disconnect the harness connector from IMM ECM 3 Measure the voltage between IMM ECM har ness connector terminal and chassis ground Connector amp terminal B141 No 10 No 11 Chassis ground Is the voltage more than 10 V Go to step 2 Check the harness for open or short between IMM ECM and fuse CHECK POWER SUPPLY CIRCUIT OF IMM ECM 1 Turn the ignition switch to ON Engine OFF 2 Measure the voltage between IMM ECM har ness connector terminal and chassis ground Connector amp terminal B141 No 12 Chassis ground Is the voltage more than 10 V Go to step 3 Check the harness for open or short between IMM ECM and ignition switch CHECK GROUND CIRCUIT OF IMM ECM 1 Turn the ignition switch to OFF 2 Measur
3. IM diag 6 Subaru Select Monitor 5 Subaru Select Monitor A OPERATION 1 HOW TO USE SUBARU SELECT MONI TOR 1 Prepare the Subaru Select Monitor kit CC 00028 2 Connect the diagnosis cable to Subaru Select Monitor 3 Insert the cartridge into Subaru Select Monitor CC 00029 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 driver s side NC IM 00072 2 Connect the diagnosis cable to data link connector CAUTION Do not connect the scan tools except for Subaru Select Monitor IMMOBILIZER DIAGNOSTICS 5 Turn the ignition switch to ON engine OFF and then Subaru Select Monitor switch to ON CC 00045 1 Power switch 6 Using the Subaru Select Monitor call up any DTCs and various data and then record them 2 READ DIAGNOSTIC TROUBLE CODE DTC FOR ENGINE Refer to Read DTC for information about how to in dicate DTC Ref to IM diag 8 Read Diagnostic Trouble Code DTC gt 3 INTERFACE CHECK NOTE The communication line between ECM and IMM ECM can be checked in System Operation Check Mode This is referred to as interface check 1 Connect the Subaru Select Monitor 2 Set the System Operation Check Mode menu display screen and then select Immobilizer Sys tem 3 St
4. Ref to FU H4SOw oOBD 43 Engine Control Module ECM gt or Ref to FU H4DOTC 49 Engine Con trol Module ECM gt Then per form teaching operation Refer to the teaching oper ation manual Pub No 5082062 Go to step 9 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS Step Check Yes No CHECK ECM BY INTERFACE CHECK Does Commun Line Shorted Replace the ECM Go to step 10 Perform interface check to Battery appear on the Ref to Screen FU H4SO 47 Engine Control Module ECM gt Ref to FU H4SOw oOBD 43 Engine Control Module ECM gt or Ref to FU H4DOTC 49 Engine Con trol Module ECM gt Then per form teaching operation Refer to the teaching oper ation manual Pub No 5082062 CHECK ECM BY INTERFACE CHECK Does Communication Line not Replace the IMM When Check Perform interface check Shorted appear on the ECM Ref to SL Time Out screen 39 Immobilizer appears on the Control Module screen perform and then replace interface check all ignition keys again including the tran sponder Then perform teaching operation Refer to the teaching oper ation manual Pub No 5082062 IM diag 22 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS E DTC P1574 KEY COMMUNICATION FAILURE DIAGNOSIS Failure of IMM ECM to verify key transponder ID code Step Check
5. System Check and then press the YES key 2 On the System Selection Menu display screen select the Engine Control System and then press the YES key 3 Press the YES key after the information of en gine type is displayed 4 On the Engine Diagnosis display screen se lect the Clear Memory and then 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 e After the memory has been cleared the ISC must be initialized To do this turn the ignition switch to ON position Wait 3 seconds before start ing the engine For detailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MAN UAL IM diag 9 IMMOBILIZER DIAGNOSTICS 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 M B No 2 o 5 SWITCH SBF 5 SBF 4 Q gt F B No 11 COMBINATION METER GD s Go IMMOBILIZER INDICATOR LHD LHD MODEL Es CE RHD MODEL lt a LHD TURBO MODEL lt a EXCEPT FOR LHD TURBO MODEL x1 LHD MODEL 19 RHD MODEL 22 k2 LHD MODEL 20 RHD MODEL 16 IMMOBILIZER CONTROL MODULE e CD Om
6. diag 11 Faulty LED bulb Replace the com bination meter printed circuit Het to 101 12 DISASSEMBLY Combination Meter Assembly Repair the har ness or connector Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER DIAGNOSTICS 2 CHECK KEY SWITCH CIRCUIT WIRING DIAGRAM BATTERY M B No 6 lt a LHD MODEL n RHD MODEL KEY WARNING SWITCH IMMOBILIZER CONTROL MODULE 1 1 2 3 4 5 1 2 3 4 5 6 7 8 9110 11 2 7 8 9110 11 12 12 13 14 15 22 23 24 IM 00074 IM diag 12 Diagnostics Chart for Immobilizer Indicator Light IMMOBILIZER DIAGNOSTICS Step Check Yes No CHECK POWER SUPPLY CIRCUIT 1 Disconnect the harness connector from key warning switch 2 Turn the ignition switch to ACC or LOCK position The key inserted 3 Measure the voltage between key warning switch harness connector terminal and chassis ground Connector amp terminal B74 No 2 Chassis ground Is the voltage more than 10 V Go to step 2 Check the harness for open or short between key warn ing switch and fuse CHECK KEY SWITCH 1 Insert the ignition key to the ignition switch OFF or ACC position 2 Measure the resistance between key warn ing switch connector terminals Connector amp terminal No 1 No 2 Is the resistance less than 1 Q Go to step 3 Replace the ke
7. dis play IM diag 2 Inspect using Diagnostic Chart with DTC Ref to IM diag 15 Diagnostics Chart with Diagnostic Trouble Code DTC gt Finish the diag nostics General Description IMMOBILIZER DIAGNOSTICS 2 General Description A CAUTION CAUTION The airbag system wiring harness is routed near the immobilizer control module All airbag system wiring harness and connectors are col ored yellow Do not use electrical test equip ment on these circuits Be careful not to damage the airbag system wiring harness when servicing the immobilizer control module While diagnostic items are being checked do not operate radios portable telephones etc which emit electromagnetic waves near or inside the vehicle 00001 When the ignition switch is being turned 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 diagnoses X IM 00002 When repeatedly turning the ignition 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 ON OFF IM 00003 1 Ignition switch position 2 Sec f the engine fails to start with a registered ignition key detach the ignition key from
8. 2004 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX BODY SECTION HVAC SYSTEM HEATER VENTILATOR AND A C HVAC SYSTEM AUTO A C AC diag DIAGNOSTICS AIRBAG SYSTEM AB AIRBAG SYSTEM DIAGNOSTICS This service manual has been prepared to provide SUBARU service personnel with the necessary information and data for the correct maintenance and repair LIGHTING SYSTEM LI This manual includes the procedures for maintenance disassembling reas sembling inspection and adjustment of WIPER AND WASHER SYSTEMS components and diagnostics for guid ance of experienced mechanics Please peruse and utilize this manual ENTERTAINMENT fully to ensure complete repair work for satisfying our customers by keeping their vehicle in optimum condition COMMUNICATION SYSTEM When replacement of parts during repair work is needed be sure to use SUBARU genuine parts GLASS WINDOWS MIRRORS GW SEAT BELT SYSTEM SB BODY STRUCTURE BS INSTRUMENTATION DRIVER INFO IDI SEATS SE SECURITY AND LOCKS SL SUNROOF T TOP CONVERTIBLE TOP cp SUNROOF EXTERIOR INTERIOR TRIM All information illustration and specifi cations contained in this manual are based on the latest product information available at the time of publication approval EXTERIOR BODY PANELS FUJI HEAVY INDUSTRIES LTD G1870GE6 2004 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX BODY SECTION CRUISE CONTROL SYSTEM CC CRUISE CONTROL SY
9. Control Module ECM gt Then perform teaching operation Refer to the teaching operation manual Pub No 5082062 G DTC P1577 IMM CONTROL MODULE EEPROM DIAGNOSIS IMM ECM malfunctioning 1 REPLACE IMM ECM Replace the IMM ECM Ref to SL 39 Immobilizer Control Module and then replace all ignition keys in cluding the transponder Then perform teaching operation Refer to the teaching operation manual Pub No S0820GZ IM diag 23 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS IM diag 24
10. ECK ILLUMINATION OF IMMOBILIZER INDICATOR LIGHT Remove the key from ignition switch Does the immobilizer indicator light begin to blink within 1 sec ond after the key is removed Go to step 3 Check the key switch circuit Ref to IM diag 12 CHECK KEY SWITCH CIR CUIT Diagnostics Chart for Immobi lizer Indicator Light CHECK ENGINE START Turn the ignition switch to START position Does the engine start Go to step 4 Go to step 5 CHECK ILLUMINATION OF IMMOBILIZER INDICATOR LIGHT Turn the ignition switch to ON Does the immobilizer indicator light illuminate Check the immobi lizer indicator light circuit Ref to IM diag 10 CHECK IMMOBI LIZER INDICA TOR CIRCUIT Diagnostics Chart for Immobilizer Indicator Light Immobilizer sys tem is normal 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 7 Subaru Select Monitor 3 Turn the ignition switch and Subaru Select Monitor switch to ON 4 Read any DTC on the display Are DTCs indicated on dis play Go to step 6 Repair the related parts PERFORM THE DIAGNOSIS 1 Inspect using Diagnostics Chart with DTC Ref to IM diag 15 Diagnostics Chart with Diagnostic Trouble Code DTC gt 2 Repair the trouble cause 3 Perform the clear memory mode 4 Read any DTC again Are indicated on
11. STEM DIAGNOSTICS IMMOBILIZER DIAGNOSTICS IM diag G1870GE6 IMMOBILIZER DIAGNOSTICS IM diag pup po OD e Page Basic Diagnostic 2 2 ive 3 Electrical Components Location essseseeeeneennneenes 5 Immobilizer Control Module I O 6 Subaru Select 7 Read Diagnostic Trouble Code 8 Clear Memory besten anion ac atas 9 Diagnostics Chart for Immobilizer Indicator 10 List of Diagnostic Trouble Code 14 Diagnostics Chart with Diagnostic Trouble Code DTO 15 Basic Diagnostic Procedure IMMOBILIZER DIAGNOSTICS 1 Basic Diagnostic Procedure A PROCEDURE Step Check Yes No CHECK ILLUMINATION OF IMMOBILIZER INDICATOR LIGHT 1 Turn the ignition switch to OFF or ACC posi tion 2 Wait at least 60 seconds Does the immobilizer indicator light blink Go to step 2 Check the immobi lizer indicator light circuit Ref to IM diag 10 CHECK IMMOBI LIZER INDICA TOR CIRCUIT Diagnostics Chart for Immobilizer Indicator Light CH
12. Yes No CHECK IMM ECM FUNCTION Is the voltage 30 30 V Go to step 2 Replace the IMM Insert the key to ignition switch LOCK posi 0 1 second after ECM Ref to SL tion measure changes in voltage between inserting the key Is the voltage 39 Immobilizer Antenna connector O V Approx 1 second after Control Module Connector amp terminal inserting the key and then replace B142 No 1 No 2 all ignition keys including the tran sponder Then perform teaching operation Refer to the teaching oper ation manual Pub No S0820GZ Replace the IMM CHECK IGNITION KEY TRANSPONDER Does the engine start Replace the igni 1 Remove the key from ignition switch 2 Start the engine using other keys that have undergone the teaching operation furnished tion key including ECM Ref to SL the transponder Then perform 39 Immobilizer Control Module with vehicle teaching opera tion Referto the all ignition keys teaching opera including the tran tion manual Pub sponder Then No 5082002 perform teaching operation Refer to the teaching oper ation manual Pub No S0820GZ and then replace F DTC P1576 EGI CONTROL MODULE EEPROM DIAGNOSIS ECM malfunctioning 1 REPLACE ECM Replace the ECM Ref to FU HASO 47 Engine Control Module ECM gt Ref to FU H4SOw oOBD 43 Engine Control Module ECM gt or Ref to FU HADOTO 49 Engine
13. art the interface check 4 Does Communication Line not Shorted appear on screen If Yes Go to step 5 If No Go to step 6 5 After diagnostic results it is determined that the short circuit is not a diagnostic item This completes interface check 6 If a problem is detected repair Ref to IM di ag 19 DTC P1572 IMM CIRCUIT FAILURE EX CEPT ANTENNA CIRCUIT Diagnostics Chart with Diagnostic Trouble Code DTC gt IM diag 7 Read Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS 6 Read Diagnostic Trouble Code DTC A OPERATION 1 On the Main Menu display screen select the Each System Check and then press the YES key 2 On the System Selection Menu display screen select the Engine Control System and then press the YES key 3 Press the YES key after the information of en gine type is displayed 4 On the Engine Diagnosis display screen se lect the DTC Display and then press the YES key 5 On the DTC Display display screen select the Current DTC or History DTC 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 14 LIST List of Diagnostic Trouble Code DTC IM diag 8 Clear Memory Mode 7 Clear Memory Mode A OPERATION 1 On the Main Menu display screen select the Each
14. art with Diagnostic Trouble Code DTC Step Check IMMOBILIZER DIAGNOSTICS Yes No CHECK HARNESS OF COMMUNICATION LINE 1 Turn the ignition switch to ON Engine OFF 2 Measure the voltage between IMM ECM har ness connector terminal and chassis ground Connector amp terminal B141 No 1 No 6 Chassis ground Is the voltage 0 V Go to step 7 Repair the har ness between IMM ECM and ECM because there is short circuit with battery voltage line or ignition switch ON line CHECK HARNESS OF COMMUNICATION LINE Measure the voltage between ECM harness connector terminal and engine ground Connector amp terminal LHD SOHC and RHD SOHC model with OBD B137 No 17 No 18 Engine ground RHD SOHC model without OBD B135 No 22 No 23 Engine ground Turbo model B135 No 5 No 14 Engine ground Is the voltage O V Go to step 8 Repair the har ness between IMM ECM and ECM because there is short circuit with battery voltage line or ignition switch ON line CHECK ECM BY INTERFACE CHECK 1 Connect the harness connector to ECM 2 Disconnect the harness connector from IMM ECM 3 Perform interface check Ref to IM diag 7 INTERFACE CHECK Subaru Select Monitor Does Commun Line Shorted to Ground appear on the screen IM diag 21 Replace the ECM Ref to FU H4SO 47 Engine Control Module ECM gt
15. d chassis ground Connector amp terminal B141 No 12 Chassis ground Is the voltage more than 10 V Go to step 4 Check the harness for open or short between IMM ECM and ignition switch CHECK IMM ECM POWER SUPPLY CIR CUIT 1 Turn the ignition switch to OFF 2 Measure the voltage between IMM ECM har ness connector terminal and chassis ground Connector amp terminal B141 No 10 No 11 Chassis ground Is the voltage more than 10 V Replace the IMM ECM lt Ref to SL 39 Immobilizer Control Module gt and then replace all ignition keys including the tran sponder Then perform teaching operation Refer to teaching opera tion manual Pub No 5082062 Check the harness for open or short between IMM ECM and fuse CHECK COMBINATION METER CIRCUIT 1 Remove the combination meter lt Ref to IDI 11 Combination Meter Assembly gt 2 Measure the voltage between combination meter harness connector terminal and chassis ground Connector amp terminal i11 No 10 Chassis ground Is the voltage more than 10 V Go to step 6 Check the harness for open or short between combina tion meter and fuse CHECK COMBINATION METER CIRCUIT Measure the resistance between IMM ECM harness connector terminal and combination meter harness connector terminal Connector amp terminal B141 No 9 i10 No 6 Is the resistance less than 10 Q IM
16. diag 74 List of Diagnostic Trouble Code DTC gt IM diag 14 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS 10 Diagnostics Chart with Diagnostic Trouble Code DTC A DTC P0513 INCORRECT IMMOBILIZER KEY DIAGNOSIS Use of unregistered key in IMM ECM Step Check No PERFORM TEACHING OPERATION ON IG 15 teaching operation for all Replace all ignition NITION KEY keys completed keys including the Perform teaching operation on all keys of the transponder Go vehicle Refer to the teaching operation man to step 2 ual Pub 5082002 PERFORM TEACHING OPERATION ON IG Is teaching operation for all Replace the IMM NITION KEY keys completed ECM Ref to SL Perform teaching operation on all keys with 39 Immobilizer vehicle Refer to the teaching operation man Control Module ual Pub 5082002 and then replace all ignition keys including the tran sponder Then perform teaching operation Refer to the teaching oper ation manual Pub No S0820GZ IM diag 15 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS B DTC P1570 ANTENNA DIAGNOSIS Faulty antenna WIRING DIAGRAM ANTENNA IMMOBILIZER CONTROL MODULE IM 00008 IM diag 16 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS Step Check Yes No CHECK ANTENNA CIRCUIT Is the resistance less than 10 Go t
17. e the resistance between IMM ECM harness connector terminal and chassis ground Connector amp terminal B141 No 2 No 3 Chassis ground Is the resistance less than 10 Q Go to step 4 Repair the open circuit of IMM ECM ground circuit CHECK HARNESS BETWEEN IMM ECM AND ECM 1 Disconnect the harness connector from ECM and IMM ECM 2 Measure the resistance between IMM ECM harness connector terminal and ECM harness connector terminal Connector amp terminal LHD SOHC model B141 No 1 B137 No 17 RHD SOHC model with OBD B141 No 1 B137 No 18 RHD SOHC model without OBD B141 No 1 B135 No 22 LHD turbo model B141 No 1 B135 No 14 RHD turbo model B141 No 1 B135 No 5 Is the resistance less than 10 Q Go to step 5 Repair the open circuit of harness between IMM ECM and ECM CHECK HARNESS BETWEEN IMM ECM AND ECM Measure the resistance between IMM ECM harness connector terminal and ECM harness connector terminal Connector amp terminal LHD SOHC model B141 No 6 B137 No 18 RHD SOHC model with OBD B141 No 6 B137 No 17 RHD SOHC model without OBD B141 No 6 B135 No 23 LHD turbo model B141 No 6 B135 No 5 RHD turbo model B141 No 6 B135 No 14 Is the resistance less than 10 Q IM diag 20 Go to step 6 Repair the open circuit of harness between IMM ECM and ECM Diagnostics Ch
18. ignition switch ON line CHECK IMM ECM FUNCTION Is the voltage 30 30 V Go to step 7 Replace the IMM 1 Turn the ignition switch to OFF Approx 0 1 second after Ref to SL 2 Connect the antenna harness connector to inserting the key Is the voltage 39 Immobilizer IMM ECM 0 V Approx 1 second after Control Module 3 Insert the key to ignition switch measure inserting the key and then replace changes in voltage between antenna harness all ignition keys connector including the tran Connector amp terminal sponder Then B142 No 1 No 2 perform teaching operation Refer to the teaching oper ation manual Pub 5082062 CHECK IGNITION KEY TRANSPONDER Does the engine start Replace the igni Replace the IMM 1 Remove the key from ignition switch tion key including ECM Ref to SL 2 Start the engine using other keys that have the transponder 39 Immobilizer undergone the teaching operation furnished Then perform Control Module with vehicle teaching opera and then replace tion Referto the all ignition keys teaching opera including the tran tion manual Pub sponder Then No 5082062 perform teaching operation Refer to the teaching oper ation manual Pub 5082062 IM diag 17 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS C DTC P1571 REFERENCE CODE INCOMPATIBILITY DIAGNOSIS Reference c
19. ignition switch and wait for approx 1 second until immobilizer indicator light begins to flash Start the engine again Before checking the diagnostic items obtain all keys for the vehicle to be checked possessed by owner IM diag 3 General Description IMMOBILIZER DIAGNOSTICS B PREPARATION TOOL 1 SPECIAL TOOLS ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS 24082AA230 CARTRIDGE Troubleshooting for electrical systems ST24082AA230 22771AA030 SUBARU SELECT Troubleshooting for electrical systems MONITOR KIT English 22771 030 Without printer German 22771AA070 Without printer French 22771AA080 Without printer Spanish 22771 090 Without printer ST22771AA030 2 GENERAL TOOLS TOOL NAME REMARKS Circuit Tester Used for measuring resistance voltage and current IM diag 4 Electrical Components Location IMMOBILIZER DIAGNOSTICS 3 Electrical Components Location A LOCATION fo fae 4 J 00071 1 Antenna 3 Immobilizer control module IMM 4 Transponder 2 Immobilizer indicator light LED ECM bulb NOTE IMM ECM location for RHD model is symmetrically opposite IM diag 5 Immobilizer Control Module I O Signal IMMOBILIZER DIAGNOSTICS 4 Immobilizer Control Module Signal A WIRING DIAGRAM 1 IMMOBILIZER Ref to WI 184 WIRING DIAGRAM Immobilizer System
20. o step 2 Replace the 1 Turn the ignition switch to OFF antenna Ref to 2 Disconnect the harness antenna connector SL 40 Immobi from IMM ECM Ref to SL 40 Immobilizer lizer Antenna Antenna 3 Measure the resistance of antenna circuit Connector amp terminal B142 No 1 No 2 CHECK ANTENNA CIRCUIT Is the resistance less than 10 Replace the Go to step 3 Measure the resistance between antenna har Q antenna Ref to ness connector and chassis ground SL 40 Immobi Connector amp terminal lizer Antenna B142 No 1 Chassis ground CHECK ANTENNA CIRCUIT Is the resistance less than 10 Replace the Go to step 4 Measure the resistance between antenna har Q antenna Ref to ness connector and chassis ground SL 40 Immobi Connector amp terminal lizer Antenna B142 No 2 Chassis ground CHECK ANTENNA CIRCUIT Is the voltage O V Go to step 5 Replace the 1 Turn the ignition switch to ON Engine antenna Ref to OFF SL 40 Immobi 2 Measure the voltage between antenna har lizer Antenna ness connector and chassis ground Connector amp terminal B142 No 1 Chassis ground CHECK ANTENNA CIRCUIT Is the voltage O V Go to step 6 Repair the har Measure the voltage between antenna har ness between IMM ness connector and chassis ground ECM and antenna Connector amp terminal because there is B142 No 2 Chassis ground short circuit with battery voltage line or
21. ode incompatibility between IMM ECM and ECM Step Check No PERFORM TEACHING OPERATION ON IG Is teaching operation for all Replace the ECM NITION KEY keys completed Ref to Perform teaching operation on all keys of the 450 47 vehicle Refer to the teaching operation man Engine Control ual Module ECM gt Ret to FU H4SOw oOBD 43 Engine Control Module ECM gt or lt Ref to FU H4DOTC 49 Engine Con trol Module ECM gt IMM ECM lt Ref to SL 39 Immobilizer Control Module gt and then replace all ignition keys including the tran sponder Then perform teaching operation Refer to the teaching oper ation manual Pub No S0820GZ IM diag 18 Diagnostics Chart with Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS D DTC P1572 IMM CIRCUIT FAILURE EXCEPT ANTENNA CIRCUIT DIAGNOSIS Communication failure between IMM ECM and ECM WIRING DIAGRAM IGNITION BATTERY SWITCH SBF 1 SBF 4 F B No 11 SBF 5 TURBO MODEL 1 LHD MODEL B5 RHD MODEL B14 NON TURBO x2 LHD MODEL B14 MODEL RHD MODEL B5 LHD MODEL LHD MODEL D18 RHD WITH OBD MODEL 017 9 RHD WITHOUT MODEL B23 Y LHD MODEL D17 EH RHD WITH OBD MODEL D18 LHD TURBO MODEL RHD WITHOUT OBD MODEL B22 EXCEPT FOR LHD TURBO MODEL IMMOBILIZER CONTROL MODULE
22. tenna lt Ref to IM diag 16 DTC P1570 ANTENNA Diagnostics Chart with Diag nostic Trouble Code DTC gt Reference Code Incompati bility Reference code incompatibility between IMM ECM and ECM lt Ref to IM diag 18 DTC P1571 REF ERENCE CODE INCOMPATIBILITY Diagnostics Chart with Diagnostic Trou ble Code DTC gt IMM Circuit Failure Except Antenna Circuit Communication failure between IMM ECM and ECM lt Ref to IM diag 19 DTC P1572 IMM CIRCUIT FAILURE EXCEPT ANTENNA CIRCUIT Diagnostics Chart with Diagnostic Trouble Code DTC gt Key Communication Failure Failure of IMM ECM to verify key transponder ID code lt Ref to IM diag 23 DTC P1574 KEY COMMUNICATION FAILURE Diagnos tics Chart with Diagnostic Trouble Code DTC gt EGI Control Module EEPROM ECM malfunctioning lt Ref to IM diag 23 DTC P1576 EGI CONTROL MODULE EEPROM Diag nostics Chart with Diagnostic Trouble Code DTC gt NOTE IMM Control Module EEPROM IMM ECM malfunctioning lt Ref to IM diag 23 DTC P1577 IMM CONTROL MODULE EEPROM Diag nostics Chart with Diagnostic Trouble Code DTC gt If any DTC except for the above immobilizer DTC has been output carry out diagnosis for the engine DTC Ref to EN H4SO diag 74 List of Diagnostic Trouble Code DTC gt or Ref to EN H4SOw oOBD diag 55 List of Diagnostic Trouble Code DTC gt or Ref to EN HADOTO
23. y warning switch CHECK KEY SWITCH 1 Remove the ignition key from the ignition switch 2 Measure the resistance between key warn ing switch connector terminals Connector amp terminal No 1 No 2 Is the resistance more than 1 Go to step 4 Replace the key warning switch CHECK HARNESS BETWEEN KEY SWITCH AND IMM ECM 1 Disconnect the harness connector from key warning switch 2 Disconnect the harness connector from IMM ECM 3 Measure the resistance between key warn ing switch harness connector terminal and IMM ECM harness connector terminal Connector amp terminal B74 No 1 B141 No 4 Is the resistance less than 10 Q IM diag 13 Replace the IMM ECM Ref to SL 39 Immobilizer Control Module and then replace all ignition keys including the tran sponder Then perform teaching operation Refer to teaching opera tion manual Pub No 5082062 Repair the har ness between key warning switch and IMM ECM A LIST DTC Without OBD With OBD List of Diagnostic Trouble Code DTC IMMOBILIZER DIAGNOSTICS 9 List of Diagnostic Trouble Code DTC Contents of diagnosis Index No P0513 Incorrect Immobilizer Key Incorrect immobilizer key Use of unregistered key in IMM ECM lt Ref to IM diag 15 DTC P0513 INCORRECT IMMOBILIZER KEY Diag nostics Chart with Diagnostic Trouble Code DTC gt ANTENNA Faulty an
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