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2001 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX

1. 30 51 32 33 34435 s T4 9 kaise 19 24 25 26 29 34135736 sep Uu o 7 ST I8 l re 212223 5132133 39 LHD Qo GB 1121374 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 RHD QD 11213141 516171819 11218 4 5 6 112131415 IS T7 T8 T9 10 11112113 1411516 17 18 19 20 21 7 8 9 101 12 13 14 1111213 14 15 16117 18 19 20 21 22 22 23 24 25 6 27 28109 80 31 32 0860 Step No CHECK HARNESS BETWEEN COMBINA Does the MIL come on Repair short circuit Replace ECM TION METER AND ECM CONNECTOR in harness Ref to 1 Turn ignition switch to OFF 2 Disconnect connector from ECM tion meter and between combina FU SOHC 48 Engine Control 3 Turn ignition switch to ON ECM connector Module gt EN SOHC 52 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS EN SOHC 53 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS E CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT BLINK AT A CYCLE OF 3 HZ DIAGNOSIS The CHECK ENGINE malfunction indicator lamp MIL circuit is open or shorted Test mode connector circuit is in open TROUBLE SYMPTOM When inspection mode MIL does not blink at a cycle of 3 Hz WIRING DIAGRA
2. CHECR HARNESS BETVVEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 15 B136 No 2 Is the resistance between 5 and 20 Q Go to step 10 Repair harness and connector NOTE In this case repair the following Open circuit in harness between ECM and tuel injector connector Poor contact in coupling connector B22 CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 15 Chassis ground CHECK EACH FUEL INJECTOR 1 Turn ignition switch to OFF 2 Measure resistance between each fuel injec tor terminals Terminals No 1 No 2 Is the resistance less than 1 Q Is the resistance between 5 and 20 Q Repair ground short circuit in har ness between ECM and fuel injector connector Go to step 12 Go to step 11 Replace faulty fuel injector CHECK POOR CONTACT Check poor contact in ECM connector Is there poor contact in ECM connector EN SOHC 80 Repair poor con tact in ECM con nector Inspection using General Diagnos tic Table Ref to EN SOHC 288 INSPECTION General Diagnos tic Table LIST OF DIAGNOSTIC TROUBLE CODE DTC Item ENGINE DIAGNOSTICS 17 List of Diagnostic Trouble Code DTC Index Front oxygen A F sensor
3. Minimum sensor Voltage For detailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MANUAL EN SOHC 38 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS 8 LED OPERATION MODE FOR ENGINE 1 On the Main Menu display screen select the Each System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the information of engine type 4 On the Engine Diagnosis display screen select the Current Data Display amp Save and press the YES key 5 On the Data Display Menu display screen select the Data amp LED Display and press the YES key 6 Using the scroll key move the display screen up or down until the desired data is shown Alist of the support data is shown in the following table Contents Display Message LED ON requirements Ignition switch signal Ignition Switch ON or OFF When ignition switch is turned ON Test mode connector signal Test Mode Signal ON or OFF When test mode connector is connected Neutral position switch signal Neutral Position Switch ON or OFF When neutral position signal is entered Air conditioning switch signal A C Switch ON or OFF When air conditioning switch is turned ON Air conditioning relay signal A C Relay ON or OFF When air conditioning relay is in function Radiator main fan relay signal Radiator Fan Relay 1 ON or OFF W
4. 2 4 brake timing pressure control duty ratio 2 4B Duty Ratio 96 Intake manifold pressure sensor voltage Mani Pressure Voltage V 2 wheel drive switch signal 2WD Switch ON or OFF Kick down switch signal Kick Down Switch ON or OFF Stop lamp switch signal Stop Lamp Switch ON or OFF Anti lock brake system signal ABS Signal ON or OFF Cruise control system signal Cruise Control Signal ON or OFF Neutral Parking range signal N P Range Signal ON or OFF Reverse range signal R Range Signal ON or OFF Drive range signal D Range Signal ON or OFF 3rd range signal 3rd Range Signal ON or OFF 2nd range signal 2nd Range Signal ON or OFF 1st range signal 1st Range Signal ON or OFF Shift control solenoid A Shift Solenoid 1 ON or OFF Shift control solenoid B Shift Solenoid 2 Torque control output signal 1 Torque Control Signal 1 ON or OFF Torque control output signal 2 Torque Control Signal 2 ON or OFF Torque control cut signal Torque Control Cut Sig ON or OFF 2 4 brake timing control solenoid valve 2 4 Brake Timing Sol ON or OFF Low clutch timing control solenoid valve Low Clutch Timing Sol ON or OFF Automatic transmission diagnosis indicator lamp AT Diagnosis Lamp ON or OFF NOTE For detailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MANUAL EN SOHC 40 READ DIAGNOSTIC TROUBLE CODE 11 Read Diagnostic Trouble Code A OPERATION 1 SUB
5. 2 Disconnect test mode connector 3 Turn ignition switch to ON engine OFF Go to step 2 Repair the MIL cir cuit Ref to EN SOHC 50 CHECR ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT COME ON Engine Malfunc tion Indicator Lamp MIL CHECK HARNESS BETWEEN COMBINA TION METER AND ECM CONNECTOR 1 Turn ignition switch to OFF 2 Disconnect connector from ECM 3 Turn ignition switch to ON Does the MIL come on Repair ground short circuit in har ness between combination meter and ECM connec tor Go to step 3 CHECK HARNESS BETWEEN TEST MODE CONNECTOR AND CHASSIS GROUND 1 Turn ignition switch to OFF Is resistance less than 1 Q2 2 Disconnect connector from ECM 3 Measure resistance of harness between test mode connector and chassis ground Connector amp terminal B76 No 1 Chassis ground Go to step 4 Repair harness and connector NOTE In this case repair the following Open circuit in harness between test mode connec tor and chassis ground CHECK POOR CONTACT Check poor contact in ECM connector Is there poor contact in ECM connector CHECK HARNESS BETWEEN ECM AND TEST MODE CONNECTOR 1 Connect test mode connector 2 Measure resistance of harness between ECM and chassis ground Connector amp terminal B135 No 14 Chassis ground Is resistance less than 1 0 Repair poor con tact in ECM con nector Go to step 6 Go to step 5
6. IDLE AIR CONTROL SOLENOID circuit low input VALVE SIGNAL 2 CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt P1513 Idle air control solenoid valve signal 2 Ref to EN SOHC 250 DTC P1513 IDLE AIR CONTROL SOLENOID circuit high input VALVE SIGNAL 2 CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt EN SOHC 84 LIST OF DIAGNOSTIC TROUBLE CODE DTC Idle air control solenoid valve signal 3 circuit low input ENGINE DIAGNOSTICS Ref to EN SOHC 250 DTC P1514 IDLE AIR CONTROL SOLENOID VALVE SIGNAL 3 CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Idle air control solenoid valve signal 3 circuit high input Ref to EN SOHC 250 DTC P1515 IDLE AIR CONTROL SOLENOID VALVE SIGNAL 3 CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Idle air control solenoid valve signal 4 circuit low input Ref to EN SOHC 252 DTC P1516 IDLE AIR CONTROL SOLENOID VALVE SIGNAL 4 CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Idle air control solenoid valve signal 4 circuit high input Starter switch circuit low input Ref to EN SOHC 256 DTC P1517 IDLE AIR CONTROL SOLENOID VALVE SIGNAL 4 CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHC 258 DTC P1518 STARTER SWITC
7. Light OFF More than 9 AT OIL TEMP indicator light Throttle position sensor B56 Light ON Less than 1 Light OFF Throttle fully closed More than 9 Throttle fully open Throttle position sensor power supply Ignition switch ON With engine OFF ATF temperature sensor ATF temperature 20 C 68 F 2 1 2 9k ATF temperature 80 C 176 F 275 375 Rear vehicle speed sensor Vehicle stopped 0 Vehicle speed at least 20 km h 12 MPH 450 650 More than 1 AC range Front vehicle speed sensor Torque converter turbine speed sensor Vehicle speed output signal Vehicle speed at least 20 km h 12 MPH Engine idling after warm up D range More than 1 AC range 450 650 450 650 Engine idling after warm up N range Vehicle speed at most 10 km h 6 MPH More than 1 AC range Less than 1 More than 4 Engine speed signal Ignition switch ON with engine OFF More than 10 5 Ignition switch ON with engine ON 8 11 Cruise set signal When cruise control is set SET lamp ON Less than 1 When cruise control is not set SET lamp OFF More than 6 5 Torque control signal 1 Ignition switch ON with engine ON 4 Torque control signal 2 Ignition switch ON with engine ON Torque control cut signal Ignition switch ON Intake manifold pressure sig nal Shift s
8. 2 Engine ground 2 E16 No 2 Engine ground 3 No 2 Engine ground 4 E17 No 2 Engine ground Is the voltage more than 10 V CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR 1 Disconnect connector from ECM 2 Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 4 B136 No 2 Is the resistance between 5 and 20 Q Go to step 3 Go to step 4 Repair harness and connector NOTE In this case repair the following Open circuit in harness between main relay and fuel injector connector Poor contact in main relay connec tor Poor contact in coupling connector B22 Poor contact in fuel injector con nector Repair harness and connector NOTE In this case repair the following Open circuit in harness between ECM and fuel injector connector Poor contact in coupling connector B22 CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 4 Chassis ground Is the resistance less than 1 Q Repair ground short circuit in har ness between ECM and fuel injector connector Go to step 5 CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B13
9. ENGINE DIAGNOSTICS F FUEL INJECTOR CIRCUIT CAUTION Check or repair only faulty parts After repair or replacement of faulty parts conduct CLEAR MEMORY MODE Ref to EN SOHC 45 Clear Memory Mode and INSPECTION MODE Ref to EN SOHC 42 Inspection Mode WIRING DIAGRAM MAIN RELAY BATTERY FUEL INJECTOR FUEL INJECTOR FUEL INJECTOR FUEL INJECTOR No 1 No 2 No 3 No 4 G gt En 11 1121814 1121374 E 3 4 5 6 7 8 5 6 7 8 5 6 9 10 11 12 13 14 15 16 4 516 718 14 15 16 17 18 19 20 21 22 23 28 29 30 31 32 33 34 35 M o S o w 3 AE HE EAE Nisje FT Ble Beo m RISIN HEYA MESES EN0866 Is the fuel injector emits oper Check fuel pres Go to step 2 ating sound sure Ref to While cranking the engine check that each ME SOHC 28 fuel injector emits operating sound Use a INSPECTION sound scope or attach a screwdriver to injector Fuel Pressure gt for this check EN SOHC 78 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK POWER SUPPLY TO EACH FUEL INJECTOR 1 Turn ignition switch to OFF 2 Disconnect connector from 1 cylinder fuel injector 3 Turn ignition switch to ON 4 Measure power supply voltage between the fuel injector terminal and engine ground Connector amp terminal 1 E5 No
10. If replaced fuse No 5 blows eas ily check the har ness for short circuit of harness between fuse No 5 and ignition relay connector Open or short circuit in harness between fuse No 5 and battery ter minal Open circuit in harness between fuse No 5 and ignition relay con nector Poor contact in ignition relay con nector Poor contact in ignition switch con nector CHECK LAMP BULB Remove engine malfunction indicator lamp bulb Is lamp bulb condition OK EN SOHC 51 Repair combina tion meter connec tor Replace lamp bulb ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS D CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT GO OFF DIAGNOSIS The CHECK ENGINE malfunction indicator lamp MIL circuit is shorted TROUBLE SYMPTOM Although MIL comes on when engine runs trouble code is not shown on Subaru select monitor or OBD II general scan tool display WIRING DIAGRAM IGNITION RELAY ED IGNITION SWITCH BATTERY SBF 4 SBF 1 EE OO OO o LHD 9 GD RHD 37 LHD 11 RHD 34 LHD 13 RHD 36 LHD 10 RHD 38 LHD 16 RHD 13 COMBINATION METEI T IME IME A12131215181 71819105 121 El 5161 7 8 T ils ahis e ToS 20 2 22 3 24 9 ro apis reTt7T16 to 2021 o2 os LE 24 25
11. No Terminal No Signal V Ignition SW ON Engine OFF Engine ON Idling ENGINE DIAGNOSTICS A C switch B135 27 ON 10 13 OFF 0 ON 13 14 OFF 0 Ignition switch B135 7 10 13 13 14 Neutral position switch AT B135 ON 1240 5 OFF 0 ON 0 OFF 1240 5 On MT vehicle Switch is ON when gear is in neutral position ON AT vehicle Switch is ON when shift is in N or P posi tion Test mode connector When connected 0 Knock Signal sensor Shield Back up power supply Ignition switch OFF 10 13 Control unit power sup ply Sensor power supply Line end check 1 Ignition 1 2 Waveform control 8 4 1 Waveform Waveform Fuel injec 2 Waveform tor 3 Waveform 4 Waveform Signal 1 Idle air Signal 2 Waveform Waveform control solenoid Signal 3 Signal 4 1 13 Waveform Waveform valve Power supply 10 13 13 14 Fuel pump relay control ON 0 5 or less OFF 10 13 0 5 or less A C relay control Radiator fan relay 1 control ON 0 5 or less OFF 10 13 ON 0 5 or less OFF 10 13 ON 0 5 or less OFF 13 14 ON 0 5 or less OFF 13 14 Radiator fan relay 2 control Malfunction indicator lamp ON 0 5 or less OFF 10 13 ON 0 5 or less OFF 1
12. No 35 Chassis ground B135 No 25 Chassis ground MT vehicle CHECR INPUT VOLTAGE OF ECM Measure voltage between ECM connector and chassis ground Connector amp terminal B136 No 9 Chassis ground Is the voltage more than 10 V ENGINE DIAGNOSTICS Yes Go to step 3 Go to step 4 No Repair open circuit in harness between ECM connector and engine grounding terminal Repair open or ground short cir cuit of power sup ply circuit CHECK INPUT VOLTAGE OF ECM 1 Turn ignition switch to ON 2 Measure voltage between ECM connector and chassis ground Connector amp terminal B135 No 7 Chassis ground Is the voltage more than 10 V Go to step 5 Repair open or ground short cir cuit of power sup ply circuit CHECK HARNESS BETWEEN ECM AND MAIN RELAY CONNECTOR 1 Turn ignition switch to OFF 2 Measure resistance between ECM and chassis ground Connector amp terminal B135 No 19 Chassis ground Is the resistance more than 1 MO Go to step 6 Repair ground short circuit in har ness between ECM connector and main relay connector then replace ECM CHECK OUTPUT VOLTAGE FROM ECM Is the voltage more than 10 V Go to step 7 Replace ECM 1 Connect connector to ECM 2 Turn ignition switch to ON 3 Measure voltage between ECM connector and chassis ground Connector amp terminal B135 No 19 Chassis ground C
13. PROCEDURE 1 Inspection of starter motor circuit Ref to EN SOHC 62 STARTER MOTOR CIRCUIT Diagnostics for Engine Starting Fail ure Y 2 Inspection of ECM power supply and ground line Ref to EN SOHC 66 CONTROL MODULE POWER SUPPLY AND GROUND LINE Diagnostics for Engine Starting Failure v 3 Inspection of ignition control system Ref to EN SOHC 70 IGNITION CONTROL SYSTEM Diagnostics for Engine Start ing Failure 4 Inspection of fuel pump circuit Ref to EN SOHC 74 FUEL PUMP CIRCUIT Diagnostics for Engine Starting Failure 5 Inspection of fuel injector circuit Ref to EN SOHC 78 FUEL INJECTOR CIRCUIT Diagnostics for Engine Starting Fail ure EN SOHC 60 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS EN SOHC 61 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS B STARTER MOTOR CIRCUIT CAUTION After repair or replacement of faulty parts conduct CLEAR MEMORY MODE lt Ref to EN SOHC 45 Clear Memory Mode and INSPECTION MODE Ref to EN SOHC 42 Inspection Mode WIRING DIAGRAM BATTERY IGNITION SWITCH INHIBITOR SWITCH 8 8 9 10 11 12 13 14 15 16 17 18 19 1 2 20 21 22 23 24 25 26 27128 o S S co B2M41
14. Repair open circuit in harness between ECM and test mode connec tor CHECK POOR CONTACT Check poor contact in ECM connector Is there poor contact in ECM connector EN SOHC 55 Repair poor con tact in ECM con nector Replace ECM Ref to FU SOHC 48 Engine Control Module ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS EN SOHC 56 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS F CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL REMAINS BLINK ING AT A CYCLE OF 3 HZ DIAGNOSIS Test mode connector circuit is shorted TROUBLE SYMPTOM MIL blinks at a cycle of 3 Hz when ignition switch is turned to ON EN SOHC 57 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS WIRING DIAGRAM IGNITION RELAY ED IGNITION SWITCH BATTERY SBF 4 SBF 1 L4 L1 OO OO o LHD 9 RHD 37 22 LHD 11 RHD 34 LHD 13 RHD 36 LHD 10 RHD 38 COMBINATION METER D k5 LHD 16 RHD 13 1 1121314 1 2 8 4 5 e 3 71819 10 11 2 5 6 7 8 12 13 14 15 16 17 18119 20 21122 23 24 EE 13 14 1516 CO 1 2 3 4151617 TAE 1 1 213 4 516171819 112 8 4 5161
15. SSM GST communica tion line Less than 1 gt L More than 4 ess than 1 gt More than 4 GND sensors GND injectors 0 GND ignition system GND power supply GND control systems GND oxygen sensor heater 1 GND oxygen sensor heater 2 EN SOHC 26 ENGINE CONDITION DATA ENGINE DIAGNOSTICS 6 Engine Condition Data A ELECTRICAL SPECIFICATION Specified data 1 6 2 9 Idling 6 4 12 8 2 500 rpm racing Measuring condition After warm up the engine Gear position is in N or P position A C is turned OFF All accessory switches are turned OFF EN SOHC 27 TRANSMISSION CONTROL MODULE TCM I O SIGNAL ENGINE DIAGNOSTICS 7 Transmission Control Module TCM I O Signal A ELECTRICAL SPECIFICATION TR0532 Check with ignition switch ON Con Termi Resistance to Content nector Measuring conditions Voltage V No nal No body ohms Back up power supply B56 1 Ignition switch OFF 10 16 Ignition switch ON with engine OFF Select lever in P range Less than 1 Select lever in any other than P range except N range Select lever in N range Less than 1 Select lever in any other than N range except P range Select lever in R range Less than 1 A Tange Select lever i therth switch elec ever in any o er
16. sensor circuit malfunction short circuit Front oxygen A F sensor circuit slow response Ref to EN SOHO 144 DTC P0132 FRONT OXYGEN A F SENSOR CIRCUIT MALFUNCTION SHORT CIRCUIT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHO 146 DTC P0133 FRONT OXYGEN A F SENSOR CIRCUIT SLOW RESPONSE Diagnostic Procedure with Diagnostic Trouble Code DTC gt Rear oxygen sensor circuit malfunc tion Ref to EN SOHC 148 DTC P0136 REAR OXYGEN SENSOR CIR CUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Rear oxygen sensor circuit slow response Ref to EN SOHO 150 DTC P0139 REAR OXYGEN SENSOR CIR CUIT SLOW RESPONSE Diagnostic Procedure with Diagnostic Trouble Code DTC gt Fuel trim malfunction Ref to EN SOHC 152 DTC P0170 FUEL TRIM MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Cylinder 1 misfire detected Ref to EN SOHO 154 DTC P0301 CYLINDER 1 MISFIRE DETECTED Diagnostic Procedure with Diagnostic Trouble Code DTC gt Cylinder 2 misfire detected Ref to EN SOHO 154 DTC P0302 CYLINDER 2 MISFIRE DETECTED Diagnostic Procedure with Diagnostic Trouble Code DTC gt Cylinder 3 misfire detected Ref to EN SOHO 154 DTC P0303 CYLINDER 3 MISFIRE DETECTED Diagnostic Procedure with Diagnostic Trouble Code DTC gt Cyl
17. 7 8 8 9 tof t 12 13 14 15 16 t7 18 19 least 10 11 12 13 14 15 16 17 18 19 20 21 9 10 11 12 13 1415116 17 18 19 20 21 22 23 201211 22 23 24 05 06 2708 22123 J24 25 26 27 28 29 30 31132 24 25 26 27 28 29 30 31 32 33 34135 ro O LIE 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 04 112 13 14 15 16 17 18 19 20 21 22 3 4 9 14 15 16 19 24 25 26 29 134135136 10 17 20 27 30 37 11 12 13 18 21 22 23 28 31 32 33 38 7118 EN0861 EN SOHC 58 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS Does MIL flash on and off 1 Disconnect test mode connector 2 Turn ignition switch to ON CHECK HARNESS BETWEEN ECM CON Is resistance less than 5 Q NECTOR AND ENGINE GROUNDING TER MINAL 1 Turn ignition switch to OFF 2 Disconnect connector from ECM 3 Measure resistance of harness between ECM connector and chassis ground Connector amp terminal B135 No 14 Chassis ground EN SOHC 59 Go to step 2 Repair short circuit in harness between ECM and test mode connec tor System is in good order NOTE MIL blinks at a cy cle of 3 Hz when test mode connec tor is connected Replace ECM Ref to FU SOHC 48 Engine Control Module DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS 16 Diagnostics for Engine Starting Failure A
18. General De scription gt E S2M0285 2 Connect diagnosis cable to Subaru Select Mon itor 3 Insert cartridge into Subaru Select Monitor Ref to EN SOHC 8 PREPARATION TOOL General Description s ST 2 A S2M0286A 4 Connect test mode connector A at the lovver portion of instrument panel on the driver s side to the side of the center console box 5 Connect Subaru Select Monitor to data link con nector 1 Connect Subaru Select Monitor to data link connector located in the lovver portion of the in strument panel on the driver s side MEM T d Po EN0768 2 Connect diagnosis cable to data link con nector CAUTION Do not connect scan tools except for Subaru Select Monitor and OBD II general scan tool 6 Turn ignition switch to ON engine OFF and Subaru Select Monitor switch to ON Power switch S2M0288A 7 On the Main Menu display screen select the 2 Each System Check and press the YES key 8 On the System Selection Menu display screen select the Engine Control System and press the YES key 9 Press the YES key after displayed the informa tion of engine type 10 On the Engine Diagnosis display screen se lect the System Operation Check Mode and press the YES key 11 On the System Operation Check Mode dis play screen select the Actuator ON O
19. LHD 10 RHD 38 LHD 16 RHD 13 COMBINATION METER A i10 a GD TS 4 5 6 890 1 2 34 718 poo oo oo oa 911011112 131415 1819 20 2122123 ma 24125 26 27 28 29 30 31 82 83 34185 3114 9 Bals 6 19 24 25 26 34 35 36 sme 7 9 S Te feta alela 5 20122138 1121374 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 RHD QD m 1 12 4 5 Te 8 9 1 2 3 41516 1 2 3 1 4 5 o 1 2 3 415 e 8 9 10 10 14 12 13 14 15 16 17 18 19 20 21 7 8 9 10 t1 12 13 14 7 8 9 toprr t2 3 14 11 12 13 14 15 16 17 18 19 20 21 22 22 23 2425 e 27 28 29 ao 31132 O d EN0860 Step Check CHECK OUTPUT SIGNAL FROM ECM Is the voltage less than 1 V Go to step 4 Go to step 2 1 Turn ignition switch to ON 2 Measure voltage between ECM connector and chassis ground Connector amp terminal B134 No 11 Chassis ground 2 CHECK POOR CONTACT Does the MIL come on when Repair poor con Go to step 3 shaking or pulling ECM con tact in ECM con nector and harness nector EN SOHC 50 ENGINE MA
20. Less than 1 FWD switch Fuse removed Fuse installed Less than 1 FWD indicator light Fuse ONFWD switch Less than 1 Fuse removed from FWD switch More than 9 Data link signal Subaru Select Monitor EN SOHC 30 DATA LINK CONNECTOR ENGINE DIAGNOSTICS 8 Data Link Connector A NOTE 1 This connector is used both for OBD II general scan tools and the Subaru Select Monitor 2 Terminal No 4 to No 6 of the data link connector is used for the Subaru Select Monitor signal CAUTION Do not connect any scan tools other than the OBD II general scan tools and the Subaru Select Mon itor because the circuit for the Subaru Select Monitor may be damaged 1 2 s 4 5 e a 9 1 11 12 13 14 15 16 H2M1280 Terminal No Contents Terminal No Contents 1 Power supply 9 Blank 2 Blank 10 K line of ISO 9141 CARB 3 Blank 11 Blank 4 Subaru Select Monitor signal ECM to Subaru Select Monitor Subaru Select Monitor signal Subaru Select Monitor to ECM Line end check signal 1 Blank Blank Blank Blank Blank Circuit only for Subaru Select Monitor 12 Ground Ground EN SOHC 31 OBD II GENERAL SCAN TOOL ENGINE DIAGNOSTICS 9 OBD II General Scan Tool A OPERATION 1 HOW TO USE OBD II GENERAL SCAN TOOL 1 Prepare a general scan tool OBD II general scan tool required by SAE J1978 2 Connect the OBD II ge
21. System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the informa tion of engine type 4 On the Engine Diagnosis display screen se lect the OBD System and press the YES key 5 On the OBD Menu display screen select the 4 Diagnosis Code s Cleared and press the YES key 6 When the Clear Diagnostic Code is shown on the display screen press the YES key 7 Turn Subaru Select Monitor and ignition switch to OFF NOTE After the memory has been cleared the idle air control solenoid valve must be initialized To do this turn the ignition switch to the ON position Wait 3 seconds before starting the engine For detailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MAN UAL ENGINE DIAGNOSTICS 3 OBD II GENERAL SCAN TOOL For clear memory procedures using the OBD II general scan tool refer to the OBD II General Scan Tool Instruction Manual After the memory has been cleared the idle air control solenoid valve must be initialized To do this turn the ignition switch to the ON position Wait 3 seconds before starting the engine EN SOHC 45 COMPULSORY VALVE OPERATION CHECK MODE ENGINE DIAGNOSTICS 14 Compulsory Valve Operation Check Mode A OPERATION 1 Prepare Subaru Select Monitor kit lt Ref to EN SOHC 8 PREPARATION TOOL
22. due to vibration do not place any wooden blocks or similar items between the safety stands and the vehicle Since the rear wheels will also rotate do not place anything near them Also make sure that nobody goes in front of the vehicle VO Safety stand Re 2 SUBARU SELECT MONITOR After performing diagnostics and clearing the mem ory check for any remaining unresolved trouble da ta Free rollers B2M2969A 1 Prepare Subaru Select Monitor hit lt Ref to EN SOHC 8 PREPARATION TOOL General De scription gt S2M0285 2 Connect diagnosis cable to Subaru Select Mon itor 3 Insert cartridge into Subaru Select Monitor lt Ref to EN SOHC 8 PREPARATION TOOL General Description gt S2M0286A 4 Connect test mode connector A at the lower portion of instrument panel on the driver s side to the side of the center console box EN SOHC 42 INSPECTION MODE 5 Connect Subaru Select Monitor to data link con nector 1 Connect Subaru Select Monitor to data link connector located in the lower portion of the in strument panel on the driver s side EN f EN0768 2 Connect diagnosis cable to data link con nector CAUTION Do not connect scan tools except for Subaru Select Monitor and OBD II general scan tool 6 Turn ignition switch to ON engine OFF and Subaru
23. evaporative emission purge control system Test of secondary air system Evaporative purge system Secondary air system No support No support No support Test of air conditioning system refrigerant A C system refrigerant No support Test of oxygen sensor Test of oxygen sensor heater Oxygen sensor O2 Heater Diagnosis Complete or incomplete Test of EGR system Air fuel ratio control system for bank 1 EGR system Fuel System for Bank 1 Complete or incomplete No support Engine load data Calculated load value Engine coolant temperature signal Short term fuel trim by front oxygen A F sensor Coolant Temp Short term fuel trim B1 Long term fuel trim by front oxygen A F sensor Intake manifold absolute pressure signal Long term fuel trim B1 Mani Absolute Pressure mmHg or kPa or inHg or psi Engine speed signal Vehicle speed signal Engine Speed Vehicle Speed Ignition timing advance for 1 cylinder Intake air temperature signal Ignition timing adv 1 Intake Air Temp Intake air amount Mass Air Flow Throttle position signal A F sensor equipment Throttle Opening Angle A F sensor or F g Rear oxygen sensor output signal Air fuel ratio correction by rear oxygen sensor Oxygen Sensor 12 Short term fuel trim 12 ON or diagnostic system NOTE OBD System For det
24. harness between ECM and ignition coil amp ignitor assembly connec tor Poor contact in coupling connector B22 CHECK HARNESS BETWEEN ECM AND IG 15 the resistance more than 1 NITION COIL amp IGNITOR ASSEMBLY CON MO NECTOR Measure resistance of harness between ECM and engine ground Connector amp terminal B134 No 25 Engine ground EN SOHC 72 Go to step 11 Repair ground short circuit in har ness between ECM and ignition coil amp ignitor assembly connec tor DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHEC ss C Is the resistance more than 1 NITION COIL 8 IGNITOR ASSEMBLY CON MQ NECTOR Measure resistance of harness between ECM and engine ground Connector amp terminal B134 No 26 Engine ground Go to step 12 Repair ground short circuit in har ness between ECM and ignition coil amp ignitor assembly connec tor Is there poor contact in ECM connector CHECK POOR CONTACT Check poor contact in ECM connector EN SOHC 73 Repair poor con tact in ECM con nector Check fuel pump circuit Ref to EN SOHO 74 FUEL PUMP CIR CUIT Diagnostics for Engine Start ing Failure DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS E FUEL PUMP CIRCUIT CAUTION After repair or replacement of faulty parts conduct CLEAR MEMORY MODE lt Ref to EN SOHC 45 Clear Memory Mode gt and INSPECTION MODE lt R
25. heater cir cuit low input Front oxygen A F sensor heater cir cuit high input Ref to EN SOHC 88 DTC P0031 FRONT OXYGEN A F SENSOR HEATER CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHC 92 DTC P0032 FRONT OXYGEN A F SENSOR HEATER CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Rear oxygen sensor heater circuit malfunction Ref to EN SOHC 94 DTC P0037 REAR OXYGEN SENSOR HEATER CIRCUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Rear oxygen sensor heater circuit high input Ref to EN SOHC 98 DTC P0038 REAR OXYGEN SENSOR HEATER CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Air assist injector solenoid valve cir cuit low input Air assist injector solenoid valve cir cuit high input Ref to EN SOHC 100 DTC P0066 AIR ASSIST INJECTOR SOLE NOID VALVE CIRCUIT LOW INPUT Diagnostic Procedure with Diagnos tic Trouble Code DTC gt Ref to EN SOHC 102 DTC P0067 AIR ASSIST INJECTOR SOLE NOID VALVE CIRCUIT HIGH INPUT Diagnostic Procedure with Diag nostic Trouble Code DTC gt Pressure sensor circuit range perfor mance problem low input Ref to EN SOHC 104 DTC P0106 PRESSURE SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM LOW INPUT Diagnostic Proce dure with Diagnostic Trouble Co
26. relay 6 Radiator sub fan relay EN SOHC 18 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS B2M2966G EN0744 EN0748 B2M2247E EN SOHC 19 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS 2 TRANSMISSION MODULE m 0751 0752 1 Transmission Control Module 2 AT diagnostic indicator light for TCM for AT vehicles vehicles EN SOHC 20 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS 2 BAS al jp VAS EN B3M1592D B3M1652B EN0754 EN SOHC 21 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS SENSOR 1 B2M2258A B2M2260A B2M2261A OBD0653B 1 Rear vehicle speed sensor for AT vehicles 2 Front vehicle speed sensor for MT vehicles 3 Front vehicle speed sensor for AT vehicles 4 Torque converter turbine speed sensor 5 ATF temperature sensor for AT vehicles 6 Brake light switch EN SOHC 22 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS SOLENOID VALVE AND SWITCH AT VEHICLES 5 8 4 3 2 E B2M2263K B2M2264F 1 Inhibitor switch 2 Shift solenoid valve 1 3 Shift solenoid valve 2 4 Line pressu
27. revolution Vehicle speed Ignition timing advance Intake air temperature Air flow rate from pressure sensor Throttle valve opening angle Check whether oxygen sensor is installed 1 sensor 2 Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor bank A F sensor 1 output voltage and short term fuel trim associated with A F sensor 1 On board diagnosis system NOTE Refer to OBD II general scan tool manufacturer s instruction manual to access generic OBD II PIDs MODE 01 EN SOHC 32 OBD II GENERAL SCAN TOOL ENGINE DIAGNOSTICS 3 MODE 02 POWERTRAIN FREEZE FRAME DATA Refers to data denoting the operating condition when trouble is sensed by the on board diagnosis system A list of the support data and PID Parameter Identification codes are shown in the following table Trouble code that caused CARB required freeze frame data storage Fuel system control status Calculated engine load value 96 Engine coolant temperature G Short term fuel trim 96 Long term fuel trim 96 Intake manifold absolute pressure Engine revolution rpm Vehicle speed NOTE Refer to OBD II general scan tool manufacturer s instruction manual to access freeze frame data MODE 02 4 MODE 03 EMISSION RELATED POWERTRAIN DIAGNOSTIC TROUBLE CODE Refer to Read Diagnostic Trouble Code for information about data denoting emission related powertrain d
28. the selector lever in the P or N posi tion 3 Separate transmission harness connector 4 Measure resistance between transmission harness connector receptacle s terminals Connector amp terminal T3 No 11 No 12 Is the resistance less than 1 Q Repair open circuit in harness between starter motor and ignition switch connector Go to step 11 CHECK TRANSMISSION HARNESS 1 Disconnect connector from inhibitor switch 2 Measure resistance of harness between transmission harness and inhibitor switch con nector Connector amp terminal T3 No 11 T7 No 1 Is the resistance less than 1 Q Go to step 12 Repair open circuit in harness between transmis sion harness and inhibitor switch connector CHECK POOR CONTACT Is there poor contact in inhibi Check poor contact in inhibitor switch connec tor switch connector tor EN SOHC 64 Repair poor con tact in inhibitor switch connector Replace inhibitor switch DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS EN SOHC 65 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS C CONTROL MODULE POWER SUPPLY AND GROUND LINE CAUTION After repair or replacement of faulty parts conduct CLEAR MEMORY MODE lt Ref to EN SOHC 45 Clear Memory Mode and INSPECTION MODE Ref to EN SOHC 42 Inspection Mode WIRING DIAGRAM MAIN RELAY TO FRONT OXYGEN A F SENSOR g
29. 2001 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX ENGINE 1 SECTION FUEL INJECTION FUEL SYSTEMS FU SOHC EMISSION CONTROL EC SOHC AUX EMISSION CONTROL DEVICES INTAKE INDUCTION IN SOHC MECHANICAL ME SOHC 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 COOLING This manual includes the procedures for maintenance disassembling reas sembling inspection and adjustment of LUBRICATION LU components and diagnostics for guid ance of experienced mechanics Please peruse and utilize this manual SPEED CONTROL SYSTEMS SP fully to ensure complete repair work for satisfying our customers by keeping their vehicle in optimum condition IGNITION IG SOHC When replacement of parts during repair work is needed be sure to use SUBARU genuine parts STARTING CHARGING SYSTEMS SC EXHAUST EX SOHC ENGINE DIAGNOSTICS EN SOHC 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 G1830GE2 Kar ss Et ENGINE DIAGNOSTICS EN SOHC Page 1 Basic Diagn stic Procedure oio nee 2 2 Check List for Interview te mira mite 4 3 General Description a S Oo Qi ee eodem 6 4 Electrical Component
30. 3 14 With A C vehicles only Light ON 1 or less Light OFF 10 14 Engine speed output 0 13 or more Waveform Torque control 1 signal Torque control 2 signal Torque control cut sig nal 5 5 8 Purge control solenoid valve Signal ON 1 or less OFF 10 13 ON 1 or less OFF 13 14 Atmo Power spheric supply pressure sensor GND sen sor Fuel level sensor with immobilizer 0 12 4 75 0 12 4 75 EN SOHC 25 ENGINE CONTROL MODULE ECM I O SIGNAL ENGINE DIAGNOSTICS Content Con nector No Terminal No Signal V Ignition SW ON Engine OFF Engine ON Idling Note AT diagnosis input sig nal B135 Less than 1 gt L More than 4 ess than 1 More than 4 Waveform Small light switch B136 ON 0 OFF 10 13 ON 0 OFF 13 14 Blower fan switch B136 ON 0 OFF 10 13 ON 0 OFF 13 14 Rear defogger switch B135 ON 0 OFF 10 13 ON 0 OFF 13 14 Front oxygen A F sen sor signal 1 B136 2 8 3 2 2 8 3 2 Front oxygen A F sen sor signal 2 Front oxygen A F sen sor signal 3 B136 2 4 2 7 2 4 2 7 Front oxygen A F sen sor signal 4 Pressure sensor 2 4 4 8 0 4 1 8 Intake air temperature sensor 2 3 2 5 1 4 1 6
31. 4 No 13 B136 No 2 Is the resistance between 5 and 20 Q Go to step 6 Repair harness and connector NOTE In this case repair the following Open circuit in harness between ECM and fuel injector connector Poor contact in coupling connector B22 CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 13 Chassis ground Is the resistance less than 1 Q EN SOHC 79 Repair ground short circuit in har ness between ECM and fuel injector connector Go to step 7 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK HARNESS BETWEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 14 B136 No 2 Is the resistance between 5 and 20 Q Go to step 8 Repair harness and connector NOTE In this case repair the following Open circuit in harness between ECM and fuel injector connector Poor contact in coupling connector B22 Is the resistance less than 1 Q2 CHECR HARNESS BETVVEEN ECM AND FUEL INJECTOR CONNECTOR Measure resistance of harness between ECM and fuel injector connector Connector amp terminal B134 No 14 Chassis ground Repair ground short circuit in har ness betvveen ECM and fuel injector connector Go to step 9
32. 85 EN SOHC 62 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK OPERATION OF STARTER MOTOR Does starter motor operate when the switch starts Go to step 2 Go to step 3 CHECK DTC lt Ref to EN SOHC 41 OPERATION Read Diagnostic Trouble Code gt Is the trouble code stored in memory lt Ref to EN SOHC 81 LIST List of Diagnostic Trouble Code DTC gt Record DTC Repai the trouble case Ref to EN SOHC 88 Diagnostic Proce dure with Diagnos tic Trouble Code DTC gt Go to step 3 CHECK INPUT SIGNAL FOR STARTER MO TOR 1 Turn ignition switch to OFF 2 Disconnect connector from starter motor 3 Turn ignition switch to ST 4 Measure power supply voltage between starter motor connector terminal and engine ground Connector amp terminal B14 No 1 Engine ground NOTE On AT vehicles place the selector lever in the P or N position CHECK GROUND CIRCUIT OF STARTER MOTOR 1 Turn ignition switch to OFF 2 Disconnect terminal from starter motor 3 Measure resistance of ground cable between ground cable terminal and engine ground Is the voltage more than 10 V Is resistance less than 5 Q Go to step 4 Check starter motor Ref to SC 5 Starter Go to step 5 Repair open circuit of ground cable CHECK HARNESS BETWEEN ECM AND STARTER MOTOR CIRCUIT 1 Turn ignition switch to OFF 2 Measure resistance between starter mo
33. ARU SELECT MONITOR NORMAL MODE 1 On the Main Menu display screen select the Each System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the informa tion of engine type 4 On the Engine Diagnosis display screen se lect the Diagnostic Code s Display and press the YES key 5 On the Diagnostic Code s Display display screen select the Current Diagnostic Code s or History Diagnostic Code s and 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 EN SOHC 81 List of Diagnostic Trouble Code DTC gt 2 SUBARU SELECT MONITOR OBD MODE 1 On the Main Menu display screen select the 2 Each System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the informa tion of engine type 4 On the Engine Diagnosis display screen se lect the OBD System and press the YES key 5 On the OBD Menu display screen select the Diagnosis Code s Display and press the YES key 6 Make sure that a diagnostic trouble code DTC is shown on the display s
34. C P1699 ENGINE TORQUE CONTROL CUT SIGNAL CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt EN SOHC 85 LIST OF DIAGNOSTIC TROUBLE CODE DTC ENGINE DIAGNOSTICS Throttle position sensor circuit mal Ref to AT 47 TROUBLE CODE 31 THROTTLE POSITION SENSOR function for automatic transmission Diagnostic Procedure with Trouble Code Cruise control set signal circuit mal Ref to EN SOHC 282 DTC P1701 CRUISE CONTROL SET SIGNAL function for automatic transmission CIRCUIT MALFUNCTION FOR AUTOMATIC TRANSMISSION Diagnos tic Procedure with Diagnostic Trouble Code DTC Low clutch timing control solenoid Ref to AT 74 TROUBLE CODE 73 LOW CLUTCH TIMING SOLENOID valve circuit malfunction Diagnostic Procedure with Trouble Code Engine torque control signal 1 circuit Ref to EN SOHC 284 DTC P1711 ENGINE TORQUE CONTROL SIG malfunction NAL 1 CIRCUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Engine torque control signal 2 circuit Ref to EN SOHC 286 DTC P1712 ENGINE TORQUE CONTROL SIG malfunction NAL 2 CIRCUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt EN SOHC 86 LIST OF DIAGNOSTIC TROUBLE CODE DTC ENGINE DIAGNOSTICS EN SOHC 87
35. CT RATIO Diagnostic Procedure with Diagnostic Trouble Code DTC gt P0733 Gear 2 incorrect ratio Gear 3 incorrect ratio lt Ref to EN SOHC 220 DTC P0732 GEAR 2 INCORRECT RATIO Diagnostic Procedure with Diagnostic Trouble Code DTC gt lt Ref to EN SOHC 220 DTC P0733 GEAR 3 INCORRECT RATIO Diagnostic Procedure with Diagnostic Trouble Code DTC gt P0734 Gear 4 incorrect ratio lt Ref to EN SOHC 221 DTC P0734 GEAR 4 INCORRECT RATIO Diagnostic Procedure with Diagnostic Trouble Code DTC gt EN SOHC 83 LIST OF DIAGNOSTIC TROUBLE CODE DTC ENGINE DIAGNOSTICS Torque converter clutch system mal function lt Ref to EN SOHC 222 DTC P0741 TORQUE CONVERTER CLUTCH SYSTEM MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Torque converter clutch system Lock up duty solenoid electrical Ref to AT 90 TROUBLE CODE 77 LOCK UP DUTY SOLENOID Diagnostic Procedure with Trouble Code gt Pressure control solenoid Line pres sure duty solenoid electrical Ref to AT 82 TROUBLE CODE 75 LINE PRESSURE DUTY SOLE NOID Diagnostic Procedure with Trouble Code Shift solenoid A Shift solenoid 1 electrical Ref to AT 66 TROUBLE CODE 71 SHIFT SOLENOID 1 Diagnostic Procedure with Trouble Code Shift solenoid B Shift solenoid 2 electrical Ref to AT 70 TROUBLE CODE 72 SH
36. Cool Cold 1 Highway Suburbs Inner city A Uphill D Downhill Rough road Others Engine temperature Cold Warming up D After warming up Any temperature Others Engine speed Vehicle speed Driving conditions I Not affected 1 At starting A While idling D At racing While accelerating D While cruising 1 While decelerating 1 While turning RH LH Headlight a OFF Rear defogger Blower OFF Radio A C compressor ON 3 OFF CD Cassette Cooling fan 1 ON 3 OFF Car phone Front wiper ON 3 OFF OFF Rear wiper ON 3 OFF EN SOHC 4 CHECK LIST FOR INTERVIEW ENGINE DIAGNOSTICS 2 CHECK LIST NO 2 NOTE Check the following items about the vehicle s state Use copies of this page for interviewing customers when MIL turns on a Other warning lights or indicators turn on Yes O No Low fuel warning light Charge indicator light AT diagnostics indicator light ABS warning light J Engine oil pressure warning light b Fuel level Lack of gasoline A Yes 1 No Indicator position of fuel gauge c Intentional connecting or disconnecting of harness connectors or spark plug cords D Yes 1 No e What d Intentional connecting or disconnecting of hoses A Yes 3 No e What e Installing of parts other than genuine parts I Yes No e What Where f Occurrence of noise Yes 3
37. DTC gt Neutral position switch circuit low input AT model Neutral position switch circuit MT model Ref to EN SOHC 268 DTC P1591 NEUTRAL POSITION SWITCH CIRCUIT LOW INPUT AT MODEL Diagnostic Procedure with Diagnos tic Trouble Code DTC gt Ref to EN SOHC 270 DTC P1592 NEUTRAL POSITION SWITCH CIRCUIT LOW INPUT MT MODEL Diagnostic Procedure with Diagnos tic Trouble Code DTC gt Automatic transmission diagnosis input signal circuit malfunction Ref to EN SOHC 272 DTC P1594 AUTOMATIC TRANSMISSION DIAGNOSIS INPUT SIGNAL CIRCUIT MALFUNCTION Diagnostic Pro cedure with Diagnostic Trouble Code DTC gt Automatic transmission diagnosis input signal circuit low input Ref to EN SOHC 274 DTC P1595 AUTOMATIC TRANSMISSION DIAGNOSIS INPUT SIGNAL CIRCUIT LOW INPUT Diagnostic Proce dure with Diagnostic Trouble Code DTC gt Automatic transmission diagnosis input signal circuit high input Engine torque control cut signal cir cuit low input Ref to EN SOHC 276 DTC P1596 AUTOMATIC TRANSMISSION DIAGNOSIS INPUT SIGNAL CIRCUIT HIGH INPUT Diagnostic Proce dure with Diagnostic Trouble Code DTC gt Ref to EN SOHC 278 DTC P1698 ENGINE TORQUE CONTROL CUT SIGNAL CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Engine torque control cut signal cir cuit high input Ref to EN SOHC 280 DT
38. E POSITION SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM LOW INPUT Diagnos tic Procedure with Diagnostic Trouble Code DTC Ref to EN SOHC 240 DTC P1146 PRESSURE SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM HIGH INPUT Diagnostic Proce dure with Diagnostic Trouble Code DTC gt Fuel level sensor circuit range perfor mance problem 2 Ref to EN SOHC 242 DTC P1442 FUEL LEVEL SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM 2 Diagnostic Procedure with Diag nostic Trouble Code DTC gt Cooling fan relay 1 circuit high input Ref to EN SOHC 245 DTC P1480 COOLING FAN RELAY 1 CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Idle control system malfunction fail safe Ref to EN SOHC 248 DTC P1507 IDLE CONTROL SYSTEM MAL FUNCTION FAIL SAFE Diagnostic Procedure with Diagnostic Trouble Code DTC gt P1510 Idle air control solenoid valve signal 1 Ref to EN SOHC 250 DTC P1510 IDLE AIR CONTROL SOLENOID circuit low input VALVE SIGNAL 1 CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt P1511 Idle air control solenoid valve signal 1 Ref to EN SOHC 250 DTC P1511 IDLE AIR CONTROL SOLENOID circuit high input VALVE SIGNAL 1 CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt P1512 Idle air control solenoid valve signal 2 Ref to EN SOHC 250 DTC P1512
39. EN SOHC 50 CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT COME ON Engine Malfunction Indicator Lamp MIL e FUE non 2i 6500859 EN0774 2 After starting the engine the MIL goes out If it does not either the engine or the emission control system is malfunctioning a No trouble MIL OFF b Trouble occurs ON MIL ar GER Ignition switch Engine ON start OBD0053A 3 If the diagnosis system senses a misfire which could damage the catalyzer the MIL will blink at a cycle of 1 Hz ON MIL OFF 1 Ignition i switch Engine i ON Start 1 sec Misfire start OBD0054A ENGINE DIAGNOSTICS 4 When ignition switch is turned to ON engine off or to START with the test mode connector con nected the MIL blinks at a cycle of 3 Hz ON MIL OFF P 1 sec Ignition switch ON OBD0055A EN SOHC 49 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS C CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT COME ON DIAGNOSIS The CHECK ENGINE malfunction indicator lamp MIL circuit is open or shorted TROUBLE SYMPTOM When ignition switch is turned ON engine OFF MIL does not come on WIRING DIAGRAM IGNITION RELAY No 5 0 0 872 IGNITION SWITCH BATTERY SBF 4 SBF 1 1 OO OR LHD 9 CD RHD 37 LHD 11 RHD 34 LHD 13 RHD 36
40. ES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the information of engine type 4 On the Engine Diagnosis display screen select the OBD System and press the YES key 5 On the OBD Menu display screen select the O2 Sensor Monitor and press the YES key 6 On the O2 Sensor Select display screen select the Bank 1 Sensor1 or Bank 1 Sensor2 and press the YES key Bank 1 Sensor1 indicates the front oxygen or A F sensor and Bank 1 Sensor2 indicates the rear oxygen sensor Alist of the support data is shown in the following table Intake manifold absolute pressure signal Mani Absolute Pressure Contents Display Unit of measure Oxygen sensor for monitoring test O2 Sensor Monitor Rich to lean oxygen sensor threshold voltage Rich to lean sensor volt Lean to rich oxygen sensor threshold voltage Lean to rich sensor volt Low oxygen sensor voltage for switch time calculation Low sensor voltage High oxygen sensor voltage for switch time calculation High sensor voltage Rich to lean oxygen sensor switch time Rich to lean switch time Lean to rich oxygen sensor switch time Lean to rich switch time Maximum oxygen sensor voltage for test cycle Maximum sensor Voltage Minimum oxygen sensor voltage for test cycle NOTE
41. FF Opera tion and press the YES key 12 Select the desired compulsory actuator on the Actuator ON OFF Operation display screen and press the YES key 13 Pressing the NO key completes the compul sory operation check mode The display will then return to the Actuator ON OFF Operation screen EN SOHC 46 COMPULSORY VALVE OPERATION CHECK MODE ENGINE DIAGNOSTICS Alist of the support data is shown in the following table Contents Display Compulsory fuel pump relay operation check Fuel Pump Relay Compulsory radiator fan relay operation check Radiator Fan Relay Compulsory air conditioning relay operation check A C Compressor Relay Compulsory purge control solenoid valve operation check CPC Solenoid Valve AAI Solenoid Valve Compulsory air assist injector solenoid valve operation check NOTE The following parts will be displayed but not functional because they are not installed on the vehicle Display EGR Solenoid Valve ASV Solenoid Valve PCV Solenoid Valve Vent Control Solenoid Valve FICD Solenoid Pressure Switching Sol 1 Pressure Switching Sol 2 Fuel Tank Sensor Control Valve For detailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MANUAL EN SOHC 47 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS 15 Engine Malfunction Indicator Lamp MIL A PROCEDURE 1 Acti
42. H CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Vehicle speed sensor malfunction 2 Ref to EN SOHC 260 DTC P1540 VEHICLE SPEED SENSOR MAL FUNCTION 2 Diagnostic Procedure with Diagnostic Trouble Code DTC gt Back up voltage circuit malfunction Antennna Ref to EN SOHC 262 DTC P1560 BACK UP VOLTAGE CIRCUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to IM 28 DTC P1570 ANTENNA Diagnostics Chart with Trouble Code Reference code incompatibility IMM circuit failure except antenna cir cuit Key communication failure Ref to IM 21 DTC P1571 REFERENCE CODE INCOMPATIBILITY Diagnostics Chart with Trouble Code Ref to IM 22 DTC P1572 IMM CIRCUIT FAILURE EXCEPT ANTENNA CIRCUIT Diagnostics Chart with Trouble Code Ref to IM 26 DTC P1574 KEY COMMUNICATION FAILURE Diag nostics Chart with Trouble Code EGI control module EEPROM IMM control module EEPROM Ref to IM 27 DTC P1576 EGI CONTROL MODULE EEPROM Diag nostics Chart with Trouble Code Ref to IM 27 DTC P1577 IMM CONTROL MODULE EEPROM Diagnostics Chart with Trouble Code Neutral position switch circuit high input AT model Ref to EN SOHC 264 DTC P1590 NEUTRAL POSITION SWITCH CIRCUIT HIGH INPUT AT MODEL Diagnostic Procedure with Diagnos tic Trouble Code
43. HECK INPUT VOLTAGE OF MAIN RELAY Is the voltage more than 10 V Go to step 8 Repair open circuit Check voltage between main relay connector in harness and chassis ground between ECM Connector amp terminal connector and B47 No 2 Chassis ground main relay connec tor CHECK GROUND CIRCUIT OF MAIN RE Is the resistance less than 5 Go to step 9 Repair open circuit LAY Q 1 Turn ignition switch to OFF 2 Measure resistance between main relay con nector and chassis ground Connector amp terminal B47 No 1 Chassis ground between main relay and chassis ground CHECK INPUT VOLTAGE OF MAIN RELAY Is the voltage more than 10 V Measure voltage between main relay connec tor and chassis ground Connector amp terminal B47 No 5 Chassis ground B47 No 6 Chassis ground EN SOHC 67 Go to step 10 Repair open or ground short cir cuit in harness of power supply cir cuit DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK INPUT VOLTAGE OF ECM 1 Connect main relay connector 2 Turn ignition switch to ON Is the voltage more than 10 V 3 Measure voltage between ECM connector and chassis ground Connector amp terminal B136 No 1 Chassis ground B136 No 2 Chassis ground EN SOHC 68 Check ignition control system Ref to EN SOHO 70 IGNITION CON TROL SYSTEM Diagnostics for Engine Sta
44. IFT SOLENOID 2 Diagnostic Procedure with Trouble Code 2 4 brake pressure control solenoid valve circuit malfunction Ref to AT 86 TROUBLE CODE 76 2 4 BRAKE DUTY SOLENOID Diagnostic Procedure with Trouble Code 2 4 brake timing control solenoid valve circuit malfunction Ref to AT 78 TROUBLE CODE 74 2 4 BRAKE TIMING SOLENOID Diagnostic Procedure with Trouble Code gt Atmospheric pressure sensor low input Atmospheric pressure sensor high input Ref to EN SOHC 224 DTC P1110 ATMOSPHERIC PRESSURE SEN SOR CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trou ble Code DTC gt Ref to EN SOHC 228 DTC P1111 ATMOSPHERIC PRESSURE SEN SOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trou ble Code DTC gt Atmospheric pressure sensor range performance problem Ref to EN SOHO 232 DTC P1112 ATMOSPHERIC PRESSURE SEN SOR CIRCUIT RANGE PERFORMANCE PROBLEM Diagnostic Proce dure with Diagnostic Trouble Code DTC gt Front oxygen A F sensor circuit range perfomance problem Ref to EN SOHO 234 DTC P1137 FRONT OXYGEN A F SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM Diagnostic Procedure with Diagnostic Trouble Code DTC gt Throttle position sensor circuit range performance problem low input Pressure sensor circuit range perfor mance problem high input Ref to EN SOHC 238 DTC P1142 THROTTL
45. ILLUMINATION OF CHECK ENGINE Does CHECK ENGINE mal Go step 3 Inspection using MALFUNCTION INDICATOR LAMP MIL function indicator lamp illumi General Diagnos nate tics Table Ref to EN SOHC 288 INSPECTION General Diagnos tic Table CHECK INDICATION OF DTC ON DISPLAY Does the Subaru Select Moni Record diagnostic Repair the related 1 Turn ignition switch to OFF tor or OBD II general scan tool trouble code parts 2 Connect the Subaru Select Monitor or the indicate DTC Repair the trouble NOTE OBD II general scan tool to data link connec cause Ref to If DTC is not tor EN SOHC 81 shown on display 3 Turn ignition switch to ON and the Subaru List of Diagnostic although the MIL il Select Monitor or OBD II general scan tool Trouble Code luminates per switch to ON DTC Go to form diagnostics of 4 Read DTC on the Subaru Select Monitor or step 4 MIL CHECK EN OBD II general scan tool GINE malfunction indicator lamp cir cuit or combination meter lt Ref to EN SOHC 48 Engine Malfunc tion Indicator Lamp MIL PERFORM THE DIAGNOSIS Does the Subaru Select Moni Inspect using Complete the 1 Perform the clear memory mode Ref to tor or OBD II general scan tool Diagnostics Pro diagnosis EN SOHO 45 Clear Memory Mode indicate DTC cedure with Diag 2 Perform the inspection mode Ref to nostic Trouble EN SOHC 42 Inspection Mode Code DTC Ref to EN SOHC 88 Diag
46. LFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS CHECK ECM CONNECTOR Is ECM connector correctly connected Replace ECM Ref to FU SOHC 48 Engine Control Module Repair connection of ECM connector CHECK HARNESS BETWEEN COMBINA TION METER AND ECM CONNECTOR 1 Turn ignition switch to OFF 2 Remove combination meter Ref to IDI 19 Combination Meter Assembly 3 Disconnect connector from ECM and combi nation meter 4 Measure resistance of harness between ECM and combination meter connector Connector amp terminal B134 No 11 i12 No 6 Is resistance less than 1 Q Go to step 5 Repair harness and connector NOTE In this case repair the following Open circuit in harness between ECM and combi nation meter con nector Poor contact in coupling connector i2 CHECK POOR CONTACT Is there poor contact in combi Check poor contact in combination meter con nation meter connector nector Repair poor con tact in combination meter connector Go to step 6 CHECK HARNESS BETWEEN COMBINA TION METER AND IGNITION SWITCH CON NECTOR 1 Turn ignition switch to ON 2 Measure voltage between combination meter connector and chassis ground Connector amp terminal i10 No 7 Chassis ground Is voltage more than 10 V Go to step 7 Check the follow ing and repair if necessary NOTE Broken down ignition relay Blown out fuse No 5
47. M IGNITION RELAY ETD ONTON SWITCH BATTERY SBF 4 SBF 1 4 EE OSO ORO o LHD 9 RHD 37 x2 LHD 11 RHD 34 LHD 13 RHD 36 LHD 10 RHD 38 LHD 16 RHD 13 or 112 11213141516171819110 11213 41516 34 1 2 3 4 5 6 7 8 9 10 11 314 7 8 9 10 11 12 13 14 718 12 13 14 15 16 17 18 19 20 21 22 23 24 CO co 1 2 4151617 TAE mG 1121314 516 7 8 9 112 4 s 6 7 8 ele radial 1o 11 r2 13 n4 r5 16 17 ve 19 20 21 9 to 11 t2 13 ha 15 16 1718 19 20 21 22 23 20121 22 23 24 5 06 2728 221231 24 25 26 27 28 29 30 31 132 24 25 25 27 28 29 30 31 32 33 34 35 TO O E 1121874 5 e 7 e 9 01 Helas ra e 8 9 00 e Bs 2212512 29 54 35 12 1 14 15 16 17 18 19 20 21 22 23 24 11112 131415116117 18 19 20 21 22 se fe E Trj 18 21122 23 31 82 85 38 7 EN0861 EN SOHC 54 ENGINE MALFUNCTION INDICATOR LAMP MIL ENGINE DIAGNOSTICS CHECK STATUS OF CHECK ENGINE MAL Does the MIL come on FUNCTION INDICATOR LAMP MIL 1 Turn ignition switch to OFF
48. M4231A 1 Front oxygen A F sensor 3 Front catalytic converter 2 Rear oxygen sensor 4 Rear catalytic converter S2M0264A OBD0524G OBD0525G EN SOHC 14 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS LHD model EN0732 RHD model PT EN0733 1 Fuel level sensor H2M3207A EN SOHC 15 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS SOLENOID VALVE EMISSION CONTROL SYSTEM PARTS AND IGNITION SYSTEM PARTS EN0736 1 Air assist injector solenoid valve 3 Purge control solenoid valve 2 Idle air control solenoid valve 4 Ignition coil amp ignitor ASSY EN SOHC 16 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS B2M3715A H2M3259A H2M3258B B2M3720A EN SOHC 17 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS EN0741 1 2 PM C Ar p E 6 5 7 4 EN0742 1 Inhibitor switch 4 Fuel pump relay 7 Starter 2 Fuel pump 5 Radiator main fan relay 3 Main
49. No From where What kind g Occurrence of smell I Yes 3 No From where What kind h Intrusion of water into engine compartment or passenger compartment Yes O No i Troubles occurred J Engine does not start Engine stalls during idling Engine stalls while driving J Engine speed decreases Engine speed does not decrease D Rough idling Poor acceleration Back fire D After fire T No shift Excessive shift shock EN SOHC 5 GENERAL DESCRIPTION ENGINE DIAGNOSTICS 3 General Description A CAUTION 1 Airbag system wiring harness is routed near the engine control module ECM main relay and fuel pump relay CAUTION All Airbag system wiring harness and con nectors are colored yellow Do not use electri cal test equipment on these circuit Becareful not to damage Airbag system wir ing harness when servicing the engine control module ECM transmission control module TCM main relay and fuel pump relay 2 Never connect the battery in reverse polarity The EOM will be destroyed instantly The fuel injector and other part will be damaged in just a few minutes more 3 Do not disconnect the battery terminals while the engine is running Alarge counter electromotive force will be gener ated in the alternator and this voltage may damage electronic parts such as ECM etc 4 Before disconnecting the connectors o
50. OFF Neutral position switch signal Neutral Position Switch ON or OFF Air conditioning switch signal A C Switch ON or OFF Air conditioning signal A C Compressor Signal ON or OFF Radiator main fan relay signal Fuel pump relay signal Radiator Fan Relay 1 ON or OFF Knocking signal Radiator sub fan relay signal Fuel Pump Relay ON or OFF Knocking Signal ON or OFF Radiator Fan Relay 2 ON or OFF Power steering switch signal P S Switch ON or OFF Engine torque control signal 1 Engine torque control signal 2 Torque Control Signal 1 ON or OFF Engine torque control permission signal Torque Control Signal 2 ON or OFF Torque Permission Signal ON or OFF Rear oxygen sensor rich signal Rear O2 Rich Signal ON or OFF EN SOHC 35 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS Contents Display Unit of measure Starter switch signal Starter Switch Signal ON or OFF Idle switch signal Idle Switch Signal ON or OFF Crankshaft position sensor signal Crankshaft Position Sig ON or OFF Camshaft position sensor signal Camshaft Position Sig ON or OFF Rear defogger switch signal Rear Defogger Switch ON or OFF Blower fan switch signal Blower Fan Switch ON or OFF Small light switch signal Light Switch ON or OFF Air assist injector solenoid valve signal Assist Air Sol Valve ON or OFF AT vehicle ID signal AT Vehicle ID Signal ON or OFF NOTE For detailed operation procedure refer to he
51. SUBARU SELECT MONITOR OPERATION MANUAL EN SOHC 36 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS 5 READ CURRENT DATA FOR ENGINE OBD MODE On the Main Menu display screen select the Each System Check and press the YES key 2 On the lt System Selection Menu gt display screen select the Engine Control System and press the YES key 3 4 5 6 7 e Press the YES key after displayed the information of engine type Alist of the support data is shown in the following table Contents Display On the Engine Diagnosis display screen select the OBD System and press the YES key On the OBD Menu display screen select the Current Data Display amp Save and press the YES key On the Data Display Menu display screen select the Data Display and press the YES key Using the scroll key move the display screen up or down until the desired data is shown Number of diagnosis code Malfunction indicator lamp status Number of Diagnosis Code MI MIL Unit of measure Monitoring test of misfire Monitoring test of fuel system Misfire monitoring Fuel system monitoring ATENTA or incomplete Complete or incomplete Complete or incomplete Monitoring test of comprehensive component Component monitoring Complete or incomplete Test of catalyst Test of heated catalyst Catalyst Diagnosis Heated catalyst No support Test of
52. Select Monitor switch to ON Power switch S2M0288A 7 On the Main Menu display screen select the 2 Each System Check and press the YES key 8 On the System Selection Menu display screen select the Engine Control System and press the YES key 9 Press the YES key after displayed the informa tion of engine type 10 On the Engine Diagnosis display screen se lect the Dealer Check Mode Procedure and press the YES key 11 When the Perform Inspection Dealer Check Mode is shown on the display screen press the YES key 12 Perform subsequent procedures as instructed on the display screen f trouble still remains in the memory the corre sponding diagnostic trouble code DTC appears on the display screen ENGINE DIAGNOSTICS 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 EN SOHC 81 List of Diagnostic Trouble Code DTC gt Release the parking brake The speed difference between front and rear wheels may light either the ABS warning light but this indicates no malfunctions When engine con trol diagnosis is finished perform the ABS memory clearance procedure of self diagnosis system 3 OBD II GENERAL SCAN TOOL After performing diagnostics and clearing the mem ory check for any remainin
53. T MONITOR OPERATION MANUAL EN SOHC 39 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS 9 READ CURRENT DATA FOR AT 1 On the Main Menu display screen select the Each System Check and press the YES key 2 On the System Selection Menu display screen select the Transmission Control System and press the YES key 3 Press the YES key after displayed the information of transmission type 4 On the Transmission Diagnosis display screen select the Current Data Display amp Save and press the YES key 5 On the Data Display Menu display screen select the Data Display and press the YES key 6 Using the scroll key move the display screen up or down until the desired data is shown Alist of the support data is shown in the following table Contents Display Unit of measure Battery voltage Battery Voltage V Rear vehicle speed sensor signal Vehicle Speed 1 km h or MPH Front vehicle speed sensor signal Vehicle Speed 2 km h or MPH Engine speed signal Engine Speed rpm Automatic transmission fluid temperature signal ATF Temp C or F Throttle position signal Throttle Sensor Voltage V Gear position Gear Position Line pressure control duty ratio Line Pressure Duty Ratio 96 Lock up clutch control duty ratio Lock Up Duty Ratio 96 Transfer clutch control duty ratio Transfer Duty Ratio 96 Power supply for throttle position sensor Throttle Sensor Power V Torque converter turbine speed signal AT Turbine Speed
54. agnostic Trouble Code DTC gt Ref to EN SOHC 214 DTC P0563 CHARGE SYSTEM CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Internal control module memory check sum error Ref to EN SOHC 216 DTC P0604 INTERNAL CONTROL MODULE MEMORY CHECK SUM ERROR Diagnostic Procedure with Diagnostic Trouble Code DTC gt Brake switch input malfunction Transmission range sensor circuit malfunction Ref to EN SOHC 218 DTC P0703 BRAKE SWITCH INPUT MAL FUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt lt Ref to AT 114 CHECK INHIBITOR SWITCH Diagnostic Procedure for No trouble Code gt Transmission fluid temperature sen sor circuit malfunction Torque converter turbine speed sen sor circuit malfunction lt Ref to AT 42 TROUBLE CODE 27 ATF TEMPERATURE SENSOR Diagnostic Procedure with Trouble Code gt lt Ref to AT 58 TROUBLE CODE 36 TORQUE CONVERTER TURBINE SPEED SENSOR Diagnostic Procedure with Trouble Code gt Output speed sensor vehicle speed sensor 2 circuit malfunction Engine speed input circuit malfunc tion Gear 1 incorrect ratio Ref to AT 53 TROUBLE CODE 33 FRONT VEHICLE SPEED SENSOR Diagnostic Procedure with Trouble Code Ref to 40 TROUBLE CODE 11 ENGINE SPEED SIGNAL Diag nostic Procedure with Trouble Code Ref to EN SOHO 220 DTC P0731 GEAR 1 INCORRE
55. ailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MANUAL EN SOHC 37 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS 6 READ FREEZE FRAME DATA FOR ENGINE OBD MODE 1 On the Main Menu display screen select the Each System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the information of engine type 4 On the Engine Diagnosis display screen select the OBD System and press the YES key 5 On the OBD Menu display screen select the Freeze Frame Data and press the YES key Alist of the support data is shown in the following table Contents Display Unit of measure Diagnostic trouble code DTC for freeze frame data Freeze frame data DTC Air fuel ratio control system for bank 1 Fuel system for Bank1 ON or OFF Engine load data Engine Load 96 Engine coolant temperature signal Coolant Temp or F Short term fuel trim by front oxygen A F sensor Short term fuel trim B1 96 Long term fuel trim by front oxygen A F sensor Long term fuel trim B1 96 mmHg or kPa or inHg or psi Engine speed signal Engine Speed rpm NOTE For detailed operation procedure refer to he SUBARU SELECT MONITOR OPERATION MANUAL 7 READ OXYGEN SENSOR MONITORING TEST RESULTS DATA FOR ENGINE OBD MODE 1 On the Main Menu display screen select the Each System Check and press the Y
56. an tool to the vehicle EN SOHC 7 GENERAL DESCRIPTION ENGINE DIAGNOSTICS 2 ENGINE AND EMISSION CONTROL SYS TEM The Multipoint Fuel Injection MFI system is a system that supplies the optimum air fuel mixture to the engine for all the various operating condi tions through the use of the latest electronic tech nology With this system fuel which is pressurized at a con stant pressure is injected into the intake air pas sage of the cylinder head The injection quantity of fuel is controlled by an intermittent injection system where the electro magnetic injection valve fuel in jector opens only for a short period of time de pending on the quantity of air required for one cycle of operation In actual operation the injection quan tity is determined by the duration of an electric pulse applied to the fuel injector and this permits simple yet highly precise metering of the fuel Further all the operating conditions of the engine are converted into electric signals and this results in additional features of the system such as large improved adaptability easier addition of compen sating element etc The MFI system also has the following features D PREPARATION TOOL ILLUSTRATION TOOL NUMBER Reduced emission of harmful exhaust gases Reduced in fuel consumption Increased engine output Superior acceleration and deceleratio
57. creen 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 EN SOHC 81 List of Diagnostic Trouble Code DTC gt ENGINE DIAGNOSTICS 3 OBD II GENERAL SCAN TOOL Refers to data denoting emission related power train diagnostic trouble codes For details concerning diagnostic trouble codes re fer to the List of Diagnostic Trouble Code DTC Ref to EN SOHC 81 List of Diagnostic Trouble Code DTC gt NOTE Refer to OBD II general scan tool manufacturer s instruction manual to access emission related powertrain diagnostic trouble codes MODE 03 EN SOHC 41 INSPECTION MODE ENGINE DIAGNOSTICS 12 Inspection Mode A OPERATION 1 PREPARATION FOR THE INSPECTION MODE Raise the vehicle using a garage jack and place on safety stands or drive the vehicle onto free rollers WARNING Before raising the vehicle ensure parking brakes are applied Do not use a pantograph jack in place of a safety stand Secure a rope or wire to the front and rear towing or tie down hooks to prevent the lateral runout of front wheels Do not abruptly depress release clutch pedal or accelerator pedal during works even when engine is operating at low speeds since this may cause vehicle to jump off free rollers In order to prevent the vehicle from slipping
58. de DTC gt Cooling fan relay 1 circuit low input Ref to EN SOHC 197 DTC P0480 COOLING FAN RELAY 1 CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Cooling fan function problem Ref to EN SOHC 201 DTC P0483 COOLING FAN FUNCTION PROB LEM Diagnostic Procedure with Diagnostic Trouble Code DTC gt Vehicle speed sensor malfunction Ref to EN SOHC 204 DTC P0500 VEHICLE SPEED SENSOR MAL FUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Idle control system RPM lower than expected Ref to EN SOHC 206 DTC P0506 IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED Diagnostic Procedure with Diagnostic Trou ble Code DTC gt Idle control system RPM higher than expected Ref to EN SOHC 208 DTC P0507 IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED Diagnostic Procedure with Diagnostic Trou ble Code DTC gt Starter switch circuit high input Incorrect immobilizer key Ref to EN SOHC 210 DTC P0512 STARTER SWITCH CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to IM 27 DTC P0153 INCORRECT IMMOBILIZER KEY USE OF UNREGISTERED KEY Diagnostics Chart with Trouble Code gt Charge system cricuit low input Charge system cricuit high input Ref to EN SOHO 212 DTC P0562 CHARGE SYSTEM CIRCUIT LOW INPUT Diagnostic Procedure with Di
59. de DTC gt Pressure sensor circuit low input Pressure sensor circuit high input Ref to EN SOHO 106 DTC P0107 PRESSURE SENSOR CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHO 110 DTC P0108 PRESSURE SENSOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Intake air temperature sensor circuit range performance problem Ref to EN SOHC 114 DTC P0111 INTAKE AIR TEMPERATURE SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM Diagnostic Procedure with Diagnostic Trouble Code DTC gt Intake air temperature sensor circuit low input Ref to EN SOHO 116 DTC P0112 INTAKE AIR TEMPERATURE SENSOR CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Intake air temperature sensor circuit high input Engine coolant temperature sensor circuit low input Ref to EN SOHC 118 DTC P0113 INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHC 122 DTC P0117 ENGINE COOLANT TEMPERA TURE SENSOR CIRCUIT LOW INPUT Diagnostic Procedure with Diag nostic Trouble Code DTC gt Engine coolant temperature sensor circuit high input Ref to EN SOHC 124 DTC P0118 ENGINE COOLANT TEMPERA TURE SENSOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diag nostic Trouble Code DTC gt Th
60. diagnostic trouble code s and various data then record them 2 READ DIAGNOSTIC TROUBLE CODE DTC FOR ENGINE NORMAL MODE Refer to Read Diagnostic Trouble Code for infor mation about how to indicate DTC Ref to EN SOHO 41 Read Diagnostic Trouble Code 3 READ DIAGNOSTIC TROUBLE CODE DTC FOR ENGINE OBD MODE Refer to Read Diagnostic Trouble Code for infor mation about how to indicate DTC Ref to EN SOHO 41 Read Diagnostic Trouble Code EN SOHC 34 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS 4 READ CURRENT DATA FOR ENGINE NORMAL MODE 1 On the Main Menu display screen select the Each System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the information of engine type 4 On the Engine Diagnosis display screen select the Current Data Display amp Save and press the YES key 5 On the Data Display Menu display screen select the Data Display and press the YES key 6 Using the scroll key move the display screen up or down until the desired data is shown Alist of the support data is shown in the following table Contents Battery voltage Vehicle speed signal Display Unit of measure Battery Voltage V Vehicle Speed km h or MPH Engine speed signal Engine Speed rpm Engine coolant temperature signal Coolant Tem
61. e between ignition coil amp ignitor assem bly connector and engine ground Connector amp terminal 2 0 L E12 No 4 Engine ground 1 6 L E12 No 4 Engine ground Go to step 8 Replace ignition coil amp ignitor assembly Ref to IG SOHC 8 Igni tion Coil and Igni tor Assembly CHECK HARNESS BETWEEN ECM AND 15 the resistance less than 1 NITION COIL 8 IGNITOR ASSEMBLY CON 0 NECTOR 1 Turn ignition switch to OFF 2 Disconnect connector from ECM 3 Disconnect connector from ignition coil amp ignitor assembly 4 Measure resistance of harness between ECM and ignition coil amp ignitor assembly con nector Connector amp terminal 2 0 L B134 No 25 E12 No 1 1 6 L B134 No 25 E12 No 4 Go to step 9 Repair harness and connector NOTE In this case repair the following Open circuit in harness between ECM and ignition coil amp ignitor assembly connec tor Poor contact in coupling connector B22 CHECK HARNESS BETWEEN ECM AND IG 15 the resistance less than 1 NITION COIL 8 IGNITOR ASSEMBLY CON 02 NECTOR Measure resistance of harness between ECM and ignition coil amp ignitor assembly connector Connector amp terminal 2 0 L B134 No 26 E12 No 4 1 6 L B134 No 26 E12 No 2 Go to step 10 Repair harness and connector NOTE In this case repair the following Open circuit in
62. ef to EN SOHC 42 Inspection Mode gt WIRING DIAGRAM Er Ny SBF 5 22 OO G IGNITION SWITCH BATTERY No 11 FUEL PUMP OO 4 D RELAY O 2 000 9997 E 4 B46 LHD 7 QD RHD 5 WITH IMMOBILIZER 29 WITHOUT IMMOBILIZER 16 FUEL PUMP 112 112 1T2 1 2 112 314 5 6 7 8 314 142 3 4 5 6 9 10 11 12113 14115 16 17 18 19 20 21122123 516 24 25 26 7 28 29 3013113233 34 35 0865 5 74 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK OPERATING SOUND OF FUEL PUMP Make sure that fuel pump is in operation for two seconds when turning ignition switch to ON NOTE Fuel pump operation can also be executed us ing Subaru Select Monitor Function mode FD01 For the procedure refer to Compulsory Valve Operation Check Mode Ref to EN SOHC 46 Compulsory Valve Operation Check Mode gt CHECK GROUND CIRCUIT OF FUEL PUMP 1 Turn ignition switch to OFF 2 Remove fuel pump access hole lid located on the right rear of trunk compartment floor Sedan or luggage compartment floor Wagon 3 Disconnect connector from fuel pump 4 Measure resistance of harness connector between fuel pump and chassis ground Connector amp terminal R58 No 1 Chassis ground Does fuel pump produce oper ating sound Is the resistance less tha
63. er compartment eZ Stud bolt B3M1666E 11 Every MFI related part is a precision part Do not drop them 12 Observe the following cautions when installing a radio in MFI equipped models CAUTION The antenna must be kept as far apart as pos sible from the control unit The ECM is located under the steering column inside of the instrument panel lower trim panel The antenna feeder must be placed as far apart as possible from the ECM and MFI har ness Carefully adjust the antenna for correct matching EN SOHC 6 GENERAL DESCRIPTION When mounting a large power type radio pay special attention to the three items above men tioned Incorrect installation of the radio may affect the operation of the ECM 13 Before disconnecting the fuel hose disconnect the fuel pump connector and crank the engine for more than five seconds to release pressure in the fuel system If engine starts during this operation run it until it stops 14 Problems in the electronic controlled automatic transmission may be caused by failure of the en gine the electronic control system the transmis sion proper or by a combination of these These three causes must be distinguished clearly when performing diagnostics 15 Diagnostics should be conducted by rotating with simple easy operations and proceeding to complicated difficult operations The most impor tant thing in diagnostics is to u
64. ess between ignition coil amp igni tor assembly con nector and engine grounding terminal Replace ignition coil amp ignitor assembly Ref to IG SOHC 8 Igni tion Coil and Igni tor Assembly CHECK IGNITION COIL amp IGNITOR ASSEM BLY Measure resistance between spark plug cord contact portions to check secondary coil Terminals 2 0 L No 3 No 4 1 6 L No 3 No 2 Is the resistance between 10 and 15 5 71 Go to step 6 Replace ignition coil amp ignitor assembly lt Ref to IG SOHC 8 Igni tion Coil and Igni tor Assembly gt DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK INPUT SIGNAL FOR IGNITION COIL Is the voltage more than 10 V amp IGNITOR ASSEMBLY 1 Connect connector to ignition coil amp ignitor assembly 2 Check if voltage varies synchronously with engine speed when cranking while monitoring voltage between ignition coil amp ignitor assem bly connector and engine ground Connector amp terminal 2 0 L E12 No 1 Engine ground 1 6 L E12 No 4 Engine ground Go to step 7 Replace ignition coil amp ignitor assembly Ref to IG SOHC 8 Igni tion Coil and Igni tor Assembly CHECK INPUT SIGNAL FOR IGNITION COIL Is the voltage more than 10 V amp IGNITOR ASSEMBLY Check if voltage varies synchronously with engine speed when cranking while monitoring voltag
65. f each sensor and the ECM be sure to turn OFF the igni tion switch 5 Poor contact has been identified as a primary cause of this problem To measure the voltage and or resistance of individual sensors or all electrical control modules at the harness side connector use a tapered pin with a diameter of less than 0 64 mm 0 025 in Do not insert the pin more than 5 mm 0 20 in into the part 6 Before removing ECM from the located position disconnect two cables on battery Otherwise the ECM may be damaged CAUTION When replacing ECM be careful not to use the wrong spec ECM to avoid any damage on fuel injection system 7 The connectors to each sensor in the engine compartment and the harness connectors on the engine side and body side are all designed to be waterproof However it is still necessary to take care not to allow water to get into the connectors when washing the vehicle or when servicing the vehicle on a rainy day 8 Use ECM mounting stud bolts at the body head grounding point when measuring voltage and resis tance inside the passenger compartment 9 Use engine grounding terminal or engine proper as the grounding point to the body when measuring voltage and resistance in the engine compartment B2M2779 10 Use TCM mounting stud bolts at the body head grounding point when measuring voltage and resis tance inside the passeng
66. g unresolved trouble da ta 1 Connect test mode connector A at the lower side of the instrument panel on the driver s side to the side of the center console box 2 Connect the OBD II general scan tool to its data link connector in the lower portion of the instrument panel on the driver s side CAUTION Do not connect the scan tools except for Suba ru Select Monitor and OBD II general scan tool EN0768 EN SOHC 43 INSPECTION MODE ENGINE DIAGNOSTICS 3 Start the engine NOTE Ensure the selector lever is placed in the P po sition before starting AT vehicles Depress clutch pedal when starting the engine MT vehicles 4 Using the selector lever or shift lever turn the P position switch and the N position switch to ON 5 Depress the brake pedal to turn the brake switch ON AT vehicles 6 Keep engine speed in the 2 500 3 000 rpm range for 40 seconds NOTE On models without tachometer use the tachometer Secondary pickup type 7 Place the selector lever or shift lever in the D position AT vehicles or ist gear MT vehicles and drive the vehicle at 5 to 10 km h 3 to 6 MPH NOTE On AWD vehicles release the parking brake The speed difference between front and rear wheels may light the ABS warning light but this in dicates no malfunctions When engine control diag nosis is finished perform the ABS memory clea
67. ge control valve circuit low input Ref to EN SOHO 176 DTC P0420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHC 178 DTC P0444 EVAPORATIVE EMISSION CON TROL SYSTEM PURGE CONTROL VALVE CIRCUIT LOW INPUT Diag nostic Procedure with Diagnostic Trouble Code DTC gt Evaporative emission control system purge control valve circuit high input Ref to EN SOHC 182 DTC P0445 EVAPORATIVE EMISSION CON TROL SYSTEM PURGE CONTROL VALVE CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt EN SOHC 82 LIST OF DIAGNOSTIC TROUBLE CODE DTC Fuel level sensor circuit range perfor mance problem ENGINE DIAGNOSTICS lt Ref to EN SOHC 184 DTC P0461 FUEL LEVEL SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM Diagnostic Procedure with Diag nostic Trouble Code DTC gt Fuel level sensor circuit low input Ref to EN SOHC 186 DTC P0462 FUEL LEVEL SENSOR CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Fuel level sensor circuit high input Fuel level sensor intermittent input Ref to EN SOHO 190 DTC P0463 FUEL LEVEL SENSOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHC 194 DTC P0464 FUEL LEVEL SENSOR INTERMIT TENT INPUT Diagnostic Procedure with Diagnostic Trouble Co
68. hen radiator main fan relay is in function Fuel pump relay signal Fuel Pump Relay ON or OFF When fuel pump relay is in function Knocking signal Knocking Signal ON or OFF When knocking signal is entered Radiator sub fan relay signal Radiator Fan Relay 2 ON or OFF When radiator sub fan relay is in function When engine torque control signal 1 is entered When engine torque control signal 2 is entered When engine torque control permission sig nal is entered When front oxygen A F sensor mixture ratio is rich When rear oxygen sensor mixture ratio is rich Starter switch signal Starter Switch Signal ON or OFF When starter switch signal is entered Idle switch signal Idle Switch Signal ON or OFF When idle switch signal is entered When crankshaft position sensor signal is entered When camshaft position sensor signal is entered Engine torque control signal 1 Torque Control Signal 1 ON or OFF Engine torque control signal 2 Torque Control Signal 42 ON or OFF Engine torque control permission signal Front oxygen A F sensor rich sig nal Torque Control Permit ON or OFF Front O2 Rich Signal 1 ON or OFF Rear oxygen sensor rich signal Rear O2 Rich Signal ON or OFF Crankshaft position sensor signal Crankshaft Position Sig ON or OFF Camshaft position sensor signal Camshaft Position Sig ON or OFF NOTE For detailed operation procedure refer to he SUBARU SELEC
69. i agnostic trouble codes Ref to EN SOHC 41 Read Diagnostic Trouble Code 5 MODE 04 CLEAR RESET EMISSION RELATED DIAGNOSTIC INFORMATION Refers to the mode used to clear or reset emission related diagnostic information OBD II trouble diagnostic information NOTE Refer to OBD II general scan tool manufacturer s instruction manual to clear or reset emission related diag nostic information MODE 04 EN SOHC 33 SUBARU SELECT MONITOR ENGINE DIAGNOSTICS 10 Subaru Select Monitor A OPERATION 1 HOW TO USE SUBARU SELECT MONI TOR 1 Prepare Subaru Select Monitor kit lt Ref to EN SOHC 8 PREPARATION TOOL General De scription gt S2M0285 2 Connect diagnosis cable to Subaru Select Mon itor 3 Insert cartridge into Subaru Select Monitor Ref to EN SOHC 8 PREPARATION TOOL General Description ST a S2M0286A 4 Connect Subaru Select Monitor to data link con nector 1 Data link connector located in the lower por tion of the instrument panel on the driver s side NN o JP Hem 2 Connect diagnosis cable to data link con nector CAUTION Do not connect scan tools except for Subaru Select Monitor and OBD II general scan tool 5 Turn ignition switch to ON engine OFF and Subaru Select Monitor switch to ON Power switch S2M0288A 6 Using Subaru Select Monitor call up
70. inder 4 misfire detected Ref to EN SOHO 156 DTC P0304 CYLINDER 4 MISFIRE DETECTED Diagnostic Procedure with Diagnostic Trouble Code DTC gt Knock sensor circuit low input Ref to EN SOHO 162 DTC P0327 KNOCK SENSOR CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Knock sensor circuit high input Ref to EN SOHC 164 DTC P0328 KNOCK SENSOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Crankshaft position sensor circuit malfunction Crankshaft position sensor circuit range performance problem Ref to EN SOHC 166 DTC P0335 CRANKSHAFT POSITION SEN SOR CIRCUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHO 168 DTC P0336 CRANKSHAFT POSITION SEN SOR CIRCUIT RANGE PERFORMANCE PROBLEM Diagnostic Proce dure with Diagnostic Trouble Code DTC gt Camshaft position sensor circuit mal function Ref to EN SOHO 170 DTC P0340 CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code DTC gt Camshaft position sensor circuit range performance problem Ref to EN SOHO 172 DTC P0341 CAMSHAFT POSITION SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM Diagnostic Procedure with Diagnostic Trouble Code DTC gt Catalyst system efficiency below threshold Evaporative emission control system pur
71. n Superior startability and warm up perfor mance in cold weather since compensation is made for coolant and intake air temperature 3 AUTOMATIC TRANSMISSION AND ELECTRONIC HYDRAULIC CONTROL SYS TEM The electronic hydraulic control system consists of various sensors and switches a transmission con trol module TCM and the hydraulic controller in cluding solenoid valves The system controls the transmission proper including shift control lock up control overrunning clutch control line pressure control and shift timing control It also controls the AWD transfer clutch In other words the system detects various operating conditions from various input signals and sends output signals to shift sole noids 1 2 and low clutch timing solenoid and 2 4 brake timing solenoid line pressure duty solenoid lock up duty solenoid transfer duty solenoid and 2 4 brake duty solenoid a total of eight solenoids DESCRIPTION REMARKS 24082AA150 New adopted tool B2M3876 CARTRIDGE Troubleshooting for electrical systems 22771AA030 B2M3877 SELECT MONITOR KIT Troubleshooting for electrical Systems English 22771AA030 With out printer German 22771AA070 Without printer French 22771AA080 Without printer Spanish 22771AA090 Without printer EN SOHC 8 GENERAL DESCRIPTION ENGINE DIAGNOSTICS EN SOHC 9 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS 4 Electrical Compo
72. n 5 Q Check fuel injec tor circuit Ref to EN SOHO 78 FUEL INJECTOR CIRCUIT Diag nostics for Engine Starting Failure Go to step 3 Go to step 2 Repair harness and connector NOTE In this case repair the following Open circuit in harness between fuel pump connec tor and chassis grounding terminal Poor contact in coupling connector R57 CHECK POWER SUPPLY TO FUEL PUMP 1 Turn ignition switch to ON 2 Measure voltage of power supply circuit between fuel pump connector and chassis ground Connector amp terminal R58 No 2 Chassis ground Is the voltage more than 10 V Replace fuel pump Ref to FU SOHC 58 Fuel Pump s Go to step 4 CHECR HARNESS BETVVEEN FUEL PUMP AND FUEL PUMP RELAY CONNECTOR 1 Turn ignition switch to OFF 2 Measure resistance of harness connector between fuel pump and fuel pump relay Connector amp terminal R58 No 2 B46 No 4 Is the resistance less than 1 Q2 CHECR HARNESS BETVVEEN FUEL PUMP AND FUEL PUMP RELAY CONNECTOR Measure resistance of harness betvveen fuel pump and fuel pump relay connector Connector amp terminal R58 No 2 Chassis ground Is the resistance more than 1 MO EN SOHC 75 Go to step 5 Go to step 6 Repair harness and connector NOTE In this case repair the following Open circuit in harness between fuel pump connec tor and chassis grounding terminal Poor con
73. n coil amp ignitor assembly 3 Turn ignition switch to ON 4 Measure power supply voltage between igni tion coil amp ignitor assembly connector and engine ground Connector amp terminal 2 0 L E12 No 2 Engine ground 1 6 L E12 No 1 Engine ground CHECK HARNESS OF IGNITION COIL amp IG NITOR ASSEMBLY GROUND CIRCUIT 1 Turn ignition switch to OFF 2 Measure resistance between ignition coil amp ignitor assembly connector and engine ground Connector amp terminal E12 No 3 Engine ground CHECK IGNITION COIL amp IGNITOR ASSEM BLY 1 Remove spark plug cords 2 Measure resistance between spark plug cord contact portions to check secondary coil Terminals 2 0 L No 1 No 2 1 6 L No 4 No 1 Does spark occur at each cyl inder Is the voltage more than 10 V Is the resistance between less than 5 0 Is the resistance between 10 and 15 Check fuel pump system Ref to EN SOHO 74 FUEL PUMP CIR CUIT Diagnostics for Engine Start ing Failure Go to step 3 Go to step 4 Go to step 5 Go to step 2 Repair harness and connector NOTE In this case repair the following Open circuit in harness between ignition coil amp igni tor assembly and ignition switch con nector Poor contact in coupling connec tors B22 Repair harness and connector NOTE In this case repair the following Open circuit in harn
74. nderstand the cus tomer s complaint and distinguish between the three causes 16 In AT vehicles do not continue the stall for more than five seconds at a time from closed throt tle fully open throttle to stall engine speed 17 On ABS vehicle when performing driving test in jacked up or lifted up position sometimes the warning light may be lit but this is not a malfunction of the system The reason for this is the speed dif ference between the front and rear wheels After di agnosis of engine control system perform the ABS memory clearance procedure of self diagnosis sys tem B INSPECTION Before performing diagnostics check the following items which might affect engine problems 1 BATTERY 1 Measure battery voltage and specific gravity of electrolyte Standard voltage 12 V Specific gravity Above 1 260 2 Check the condition of the main and other fuses and harnesses and connectors Also check for proper grounding ENGINE DIAGNOSTICS 2 ENGINE GROUNDING Make sure the engine grounding terminal is proper ly connected to the engine XS T aae Hz e N 2 2779 1 DESCRIPTION The on board diagnostics OBD system detects and indicates a fault in various inputs and outputs of the complex electronic control CHECK ENGINE malfunction indicator lamp MIL in the combination meter indicates occurrence of a fault or trouble Further against such a failure or sens
75. nents Loca tion A LOCATION 1 ENGINE MODULE LHD model 1 EN0713 RHD model EN0714 1 Engine control module ECM 3 Read memory connector 2 CHECK ENGINE malfunction indi 4 Test mode connector cator lamp MIL b Data link connector EN SOHC 10 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS B3M1575A EN SOHC 11 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS SENSOR 0 Gere x cmq m se Car TS zT SUN E E 1 2 TC lt i l EN0719 1 Atmospheric pressure sensor 3 Engine coolant temperature sen 5 Knock sensor 2 Intake air temperature and pres sor Camshaft position sensor sure sensor 4 Throttle position sensor 7 Crankshaft position sensor EN SOHC 12 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS B2M2241A B2M2242A B2M0213J EN SOHC 13 ELECTRICAL COMPONENTS LOCATION ENGINE DIAGNOSTICS B2
76. neral scan tool to the data link connector located in the lower portion of the in strument panel on the driver s side Et JP Oo EN0768 3 Using the OBD II general scan tool call up diag nostic trouble code s and freeze frame data OBD II general scan tool functions consist of 1 MODE 01 Current powertrain diagnostic data 2 MODE 02 Powertrain freeze frame data 3 MODE 03 Emission related powertrain di agnostic trouble codes 4 MODE 04 Clear Reset emission related diagnostic information Read out data according to repair procedures For detailed operation procedures refer to the OBD II General Scan Tool Operation Manual NOTE For details concerning diagnostic trouble codes re fer to the List of Diagnostic Trouble Code DTC Ref to EN SOHC 81 List of Diagnostic Trouble Code DTC gt 2 MODE 01 CURRENT POWERTRAIN DIAGNOSTIC DATA Refers to data denoting the current operating condition of analog input output digital input output and or the powertrain system A list of the support data and PID Parameter Identification codes are shown in the following table Data Unit of measure Number of emission related powertrain trouble codes and MIL status ON OFF Fuel system control status Calculated engine load value Engine coolant temperature Short term fuel trim Long term fuel trim Intake manifold absolute pressure Engine
77. nostic Proce dure with Diagnos tic Trouble Code DTC gt EN SOHC 2 BASIC DIAGNOSTIC PROCEDURE 2 AUTOMATIC TRANSMISSION When trouble code about automatic transmission is shown on display carry out the following basic check After that carry out the replacement or re pair work 1 ATF level check lt Ref to AT 9 Automatic Transmission Fluid gt 2 Differential gear oil level check Ref to AT 11 Differential Gear Oil 3 ATF leak check Ref to AT 9 Automatic Trans mission Fluid 4 Differential gear oil leak check Ref to AT 11 Differential Gear Oil 5 Stall test Ref to AT 13 Stall Test 6 Line pressure test Ref to AT 16 Line Pressure Test 7 Transfer clutch pressure test Ref to AT 18 Transfer Clutch Pressure Test 8 Time lag test Ref to AT 15 Time Lag Test 9 Road test Ref to AT 12 Road Test 10 Shift characteristics Ref to AT 18 Transfer Clutch Pressure Test EN SOHC 3 ENGINE DIAGNOSTICS CHECK LIST FOR INTERVIEW ENGINE DIAGNOSTICS 2 Check List for Interview NOTE Use copies of this page for interviewing customers A CHECK 1 CHECK LIST NO 1 Check the following items when problem has oc curred Customer s name Engine no Date of sale Fuel brand Date of repair Odometer reading Vin no Weather D Fine Cloudy 1 Rainy a Snowy D Various Others Outdoor temperature Hot Warm
78. olenoid 1 Engine idling after warm up 1st or 4th gear More than 9 2nd or 3rd gear Less than 1 Shift solenoid 2 1st or 2nd gear More than 9 3rd or 4th gear EN SOHC 29 Less than 1 TRANSMISSION CONTROL MODULE TCM I O SIGNAL ENGINE DIAGNOSTICS Check with ignition switch ON Content Con nector No Termi nal No Measuring conditions Resistance to body ohms Line pressure duty solenoid Ignition switch ON with engine OFF Throttle fully closed after warm up Ignition switch ON with engine OFF Throttle fully open after warm up Less than 0 5 Lock up duty solenoid When lock up occurs More than 8 5 When lock up is released Less than 0 5 Transfer duty solenoid Fuse on FWD switch More than 8 5 Fuse removed from FWD switch with throttle fully open and with select lever in 1st gear Less than 0 5 2 4 brake duty solenoid Ignition switch ON with engine OFF Throttle fully closed after warm up Ignition switch ON with engine OFF Throttle fully open after warm up Less than 0 5 2 4 brake timing solenoid 1st gear 3rd gear Less than 1 More than 9 Low clutch timing solenoid Sensor ground line 1 2nd gear Less than 1 4th gear More than 9 Sensor ground line 2 Sensor ground line 3 Less than 1 Sensor ground line 4 Less than 1 System ground line
79. ors as may disable the drive the fail safe function is provided to ensure the minimal driveability The OBD system incorporated with the vehicles within this engine family complies with Section 1968 1 California Code of Regulations OBD II regulation The OBD system monitors the compo nents and the system malfunction listed in Engine Section which affects on emissions When the system decides that a malfunction oc curs MIL illuminates At the same time of the MIL il lumination or blinking a diagnostic trouble code DTC and a freeze frame engine conditions are stored into on board computer The OBD system stores freeze frame engine condition data engine load engine coolant tem perature fuel trim engine speed and vehicle speed etc into on board computer when it detects a malfunction first If the OBD system detects the various malfunc tions including the fault of fuel trim or misfire the OBD system first stores freeze frame engine condi tions about the fuel trim or misfire When the malfunction does not occur again for three consecutive driving cycles MIL is turned off but DTC remains at on board computer The OBD II system is capable of communication with a general scan tool OBD II general scan tool formed by ISO 9141 CARB e The OBD II diagnostics procedure is different from the usual diagnostics procedure When trou bleshooting OBD II vehicles connect Subaru Se lect Monitor or the OBD II general sc
80. p or F Ignition timing signal Ignition Timing deg Throttle position signal Throttle position signal Throttle Opening Angle 96 Throttle Sensor Voltage V Injection pulse width Fuel Injection 1 Pulse ms Idle air control signal ISC Valve Step Engine load data Engine Load Front oxygen A F sensor output signal A F Sensor 1 Rear oxygen sensor output signal Rear O2 Sensor V Short term fuel trim A F Correction 1 96 Knock sensor signal Knocking Correction deg Atmospheric absolute pressure signal Intake manifold relative pressure signal mmHg or kPa or inHg or psi mmHg or kPa or inHg or psi Atmosphere Pressure Mani Relative Pressure Intake manifold absolute pressure signal mmHg or kPa or inHg or psi Mani Absolute Pressure A F correction short term fuel trim by rear oxygen sensor A F Correction 3 96 Long term whole fuel trim A F Learning 1 Front oxygen A F sensor heater current Front O2 Heater 1 A Rear oxygen sensor heater current Rear O2 Heater Current A Canister purge control solenoid valve duty ratio CPC Valve Duty Ratio 96 Fuel level signal Fuel Level V Intake air temperature signal Intake Air Temp or F Learned ignition timing Learned Ignition Timing deg Ignition switch signal Test mode connector signal Ignition Switch ON or OFF Test Mode Signal ON or
81. rance procedure of self diagnosis system 8 Using the OBD II general scan tool check for di agnostic trouble code s and record the result s NOTE For detailed operation procedures refer to the OBD II General Scan Tool Instruction Manual For detailed concerning diagnostic trouble codes refer to the List of Diagnostic Trouble Code DTC Ref to EN SOHC 81 List of Diagnostic Trouble Code DTC gt EN SOHC 44 CLEAR MEMORY MODE 13 Clear Memory Mode A OPERATION 1 SUBARU SELECT MONITOR NORMAL MODE 1 On the Main Menu display screen select the 2 Each System Check and press the YES key 2 On the System Selection Menu display screen select the Engine Control System and press the YES key 3 Press the YES key after displayed the informa tion of engine type 4 On the Engine Diagnosis display screen se lect the Clear Memory and 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 idle air control solenoid valve must be initialized To do this turn the ignition switch to the ON position Wait 3 seconds before starting the engine For detailed operation procedure refer to the SUBARU SELECT MONITOR OPERATION MAN UAL 2 SUBARU SELECT MONITOR OBD MODE 1 On the Main Menu display screen select the 2 Each
82. re duty solenoid 5 Lock up duty solenoid 6 Transfer duty solenoid 7 2 4 brake duty solenoid 8 Low clutch timing solenoid valve 9 2 4 brake timing solenoid valve SOLENOID VALVE AND SWITCH MT VEHICLES B2M2265A 1 Neutral position switch EN SOHC 23 ENGINE CONTROL MODULE ECM I O SIGNAL ENGINE DIAGNOSTICS 5 Engine Control Module ECM I O Signal A ELECTRICAL SPECIFICATION B2M2267A Con Terminal Signal V Content nector Ignition SW ON Note No No Engine OFF Engine ON Idling Crank Signal B135 0 7 7 Sensor output waveform shaft posi Signal B135 0 0 tion sensor Shield 0 0 Camshaft Signal 0 7 7 Sensor output waveform position Signal 0 0 sensor Shield 0 0 Fully closed 0 2 1 0 Fully opened 4 2 4 7 Signal Throttle Power position 5 sensor Supp GND sen sor Signal Rear oxy Shield gen sen sor GND sen sor Front oxy Signal 1 gen A F sensor Signal 2 heater Rear oxygen sensor heater signa Engine Signal After warm up the engine coolant tempera GND sen ture sen sor sor After warm up the engine 5 and 0 are repeatedly dis vehicle speed signal played when vehicle is driven Starter switch Cranking 8 14 EN SOHC 24 Content ENGINE CONTROL MODULE ECM I O SIGNAL Con nector
83. rottle position sensor circuit range performance problem high input Ref to EN SOHC 128 DTC P0121 THROTTLE POSITION SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM HIGH INPUT Diagnos tic Procedure with Diagnostic Trouble Code DTC Throttle position sensor circuit low input Throttle position sensor circuit high input Ref to EN SOHO 130 DTC P0122 THROTTLE POSITION SENSOR CIRCUIT LOW INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Ref to EN SOHO 134 DTC P0123 THROTTLE POSITION SENSOR CIRCUIT HIGH INPUT Diagnostic Procedure with Diagnostic Trouble Code DTC gt EN SOHC 81 LIST OF DIAGNOSTIC TROUBLE CODE DTC ENGINE DIAGNOSTICS Insufficient coolant temperature for closed loop fuel control lt Ref to EN SOHC 136 DTC P0125 INSUFFICIENT COOLANT TEM PERATURE FOR CLOSED LOOP FUEL CONTROL Diagnostic Proce dure with Diagnostic Trouble Code DTC gt Front oxygen A F sensor circuit range performance problem Lean Ref to EN SOHO 138 DTC P0130 FRONT OXYGEN A F SENSOR CIRCUIT RANGE PERFORMANCE PROBLEM LEAN Diagnostic Pro cedure with Diagnostic Trouble Code DTC gt Front oxygen A F sensor circuit malfunction open circuit Ref to EN SOHO 142 DTC P0131 FRONT OXYGEN A F SENSOR CIRCUIT MALFUNCTION OPEN CIRCUIT Diagnostic Procedure with Diagnostic Trouble Code DTC gt Front oxygen A F
84. rting Failure Repair open or ground short cir cuit in harness between ECM connector and main relay connec tor DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS EN SOHC 69 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS D IGNITION CONTROL SYSTEM CAUTION After repair or replacement of faulty parts conduct CLEAR MEMORY MODE lt Ref to EN SOHC 45 Clear Memory Mode and INSPECTION MODE Ref to EN SOHC 42 Inspection Mode WIRING DIAGRAM 672 TION SWITCH BATTERY 1 6L 2 x2 2 0L 1 1 6L 4 x3 2 0L 2 1 6L 1 IGNITOR amp IGNITION COIL ASSY 1121 5 6 7 8 1121314 1121344 1121314 1 2 GEI 9 12 14 15 16 17 18 19 20 21 22 23 314 24125 26 27 28 29 30 31 32 33 134 35 Galias EN0864 EN SOHC 70 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK IGNITION SYSTEM FOR SPARKS 1 Remove plug cord cap from each spark plug 2 Install new spark plug on plug cord cap CAUTION Do not remove spark plug from engine 3 Contact spark plug s thread portion on engine 4 While opening throttle valve fully crank engine to check that spark occurs at each cyl inder CHECK POWER SUPPLY CIRCUIT FOR IG NITION COIL amp IGNITOR ASSEMBLY 1 Turn ignition switch to OFF 2 Disconnect connector from ignitio
85. s Location une a 10 5 Engine Control Module ECM I O Signal 24 6 Engine Condition Dalaran en 27 7 Transmission Control Module TCM I O 28 8 Data Link Connector la 31 9 OBD II General Scan tote t oben 32 10 Subaru Select Monitor tee apical 34 11 Read Diagnostic Trouble Code riadas 41 12 Inspection Mode auna 42 13 Clear Memory Mode eio e Rl EE a pd 45 14 Compulsory Valve Operation Check 46 15 Engine Malfunction Indicator Lamp MIL 48 16 Diagnostics for Engine Starting 60 17 List of Diagnostic Trouble Code DTO 81 18 Diagnostic Procedure with Diagnostic Trouble Code DTO 88 19 General Diagnostic Table aka 288 BASIC DIAGNOSTIC PROCEDURE ENGINE DIAGNOSTICS 1 Basic Diagnostic Procedure A PROCEDURE 1 ENGINE Step Check Yes No CHECK ENGINE START FAILURE Does the engine start Go to step 2 Inspection using 1 Ask the customer when and how the trouble Diagnostics for occurred using the interview check list lt Ref to Engine Start Fail EN SOHO 4 CHECK Check List for Inter ure Ref to view EN SOHC 60 2 Start the engine Diagnostics for Engine Starting Failure s CHECK
86. t LS 872 IGNITION SWITCH BATTERY ae UE SBF 4 SBF 1 4 o mo 613 112 1121314 1 2 1121314 1 2 3 4151677 11213 415 6 7 314 5 6 718 5161718 819 io tt15F6 9 15 te i7 15 8 9 10 t1 12 13 14 15 16 17 18 19 20 9 10 112 20 21 122123 24 25 26 27 28 21 22 23 24 25 26 27 28 29 30 13 14 1516 112 314 5 6 7 8 9 10 11 12 13 t4 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30131132133 34 35 EN0863 Step Check Yes No CHECK MAIN RELAY Is the resistance less than 10 to step 2 Replace main 1 Turn the ignition switch to OFF 0 relay 2 Remove main relay 3 Connect battery to main relay terminals No 1 and No 2 4 Measure resistance between main relay ter minals Terminals No 3 No 5 No 4 No 5 EN SOHC 66 DIAGNOSTICS FOR ENGINE STARTING FAILURE Check CHECK GROUND CIRCUIT OF ECM Is the resistance less than 5 1 Disconnect connector from ECM Q2 2 Measure resistance of harness between ECM and chassis ground Connector amp terminal B136 No 21 Chassis ground B136 No 22 Chassis ground B134 No 27 Chassis ground B134 No 8 Chassis ground B134 No 7 Chassis ground B134 No 34 Chassis ground B134
87. tact in coupling connec tors R57 and B97 Repair short circuit in harness between fuel pump and fuel pump relay connector DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK FUEL PUMP RELAY Is the resistance less than 10 Go to step 7 Replace fuel pump 1 Disconnect connectors from fuel pump relay Q relay Ref to and main relay FU SOHC 50 2 Remove fuel pump relay and main relay vvith Fuel Pump Relay s bracket 3 Connect battery to fuel pump relay connector terminals No 1 and No 3 4 Measure resistance between connector ter minals of fuel pump relay Terminals No 2 No 4 CHECK HARNESS BETWEEN ECM AND Is the resistance less than 1 Go to step 8 Repair open circuit FUEL PUMP RELAY CONNECTOR 0 harness 1 Disconnect connectors from between ECM and 2 Measure resistance of harness between fuel pump relay ECM and fuel pump relay connector connector Connector amp terminal e With immobilizer B134 No 29 B46 No 3 e Without immobilizer B134 No 16 B46 No 3 CHECK POOR CONTACT Is there poor contact in ECM Repair poor con Check fuel injec Check poor contact in ECM connector connector tact in ECM con tor circuit Ref to nector EN SOHO 78 FUEL INJECTOR CIRCUIT Diag nostics for Engine Starting Failure EN SOHC 76 DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS EN SOHC 77 DIAGNOSTICS FOR ENGINE STARTING FAILURE
88. than More than 8 R range Select lever in D range Less than 1 Select lever in any other than D range Select lever in 3 range Less than 1 Select lever in any other than 3 range Select lever in 2 range Less than 1 Select lever in any other than 2 range Select lever in 1 range Less than 1 Select lever in any other than 1 range Brake pedal depressed More than 10 5 Brake pedal released Less than 1 ABS switch ON Less than 1 ABS switch OFF 6 5 15 Ignition power supply P range switch More than 8 N range switch More than 8 Inhibitor D range switch switch More than 8 3 range switch More than 8 2 range switch More than 8 1 range switch More than 8 Brake switch ABS signal EN SOHC 28 TRANSMISSION CONTROL MODULE TCM I O SIGNAL Check with ignition switch ON ENGINE DIAGNOSTICS Content Con nector No Termi Measuring conditions nal No Resistance to Voltage V body ohms Hold switch B55 Hold switch ON 16 Less than 1 Hold switch OFF More than 8 Power switch B55 Power switch ON Less than 1 Power switch OFF More than 10 Kick down switch B55 4 Throttle fully opened Less than 1 Throttle fully closed More than 6 5 POWER indicator light B56 Light ON 11 ight O Less than 1
89. tor and ECM Connector amp terminal B14 No 1 Engine ground Is resistance less than 1 0 Repair ground short circuit Go to step 6 CHECK HARNESS BETWEEN ECM AND STARTER MOTOR CIRCUIT 1 Turn ignition switch to START 2 Measure resistance of fuse Connector amp terminal B14 No 1 Engine ground CHECK HARNESS BETWEEN BATTERY AND IGNITION SWITCH CONNECTOR 1 Ignition switch to OFF 2 Disconnect connector from ignition switch 3 Measure power supply voltage between igni tion switch connector and chassis ground Connector amp terminal B72 No 1 Chassis ground CHECK HARNESS BETWEEN BATTERY AND IGNITION SWITCH CONNECTOR 1 Connect connector to ignition switch 2 Turn ignition switch to START 3 Measure voltage between ignition switch and chassis ground Connector amp terminal B72 No 3 Chassis ground Is resistance less than 1 0 Is the voltage more than 10 V Is the voltage more than 10 V EN SOHC 63 Go to step 7 Go to step 8 Go to step 9 Repair ground short circuit Repair open circuit in harness between ignition switch and battery Replace ignition switch DIAGNOSTICS FOR ENGINE STARTING FAILURE ENGINE DIAGNOSTICS CHECK TRANSMISSION TYPE Is the vehicle AT Go to step 10 Repair open circuit between ignition switch and starter motor circuit CHECK INHIBITOR SWITCH CIRCUIT 1 Turn ignition switch to OFF 2 Place
90. vation of check engine malfunction indicator lamp MIL Ref to EN SOHC 49 ACTIVATION OF CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL Engine Malfunction Indicator Lamp MIL 2 Check engine malfunction indicator lamp MIL does not come on Ref to EN SOHC 50 CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT COME ON Engine Malfunction Indicator Lamp MIL 3 Check engine malfunction indicator lamp MIL does not go off Ref to EN SOHC 52 CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT GO OFF Engine Malfunction Indicator Lamp MIL 4 Check engine malfunction indicator lamp MIL does not blink at a cycle of 3 Hz Ref to EN SOHC 54 CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL DOES NOT BLINK AT A CYCLE OF 3 HZ Engine Malfunction Indicator Lamp MIL 5 Check engine malfunction indicator lamp MIL remains blinking at a cycle of 3 Hz Ref to EN SOHC 57 CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL REMAINS BLINKING AT A CYCLE OF 3 HZ Engine Malfunction Indicator Lamp MIL EN SOHC 48 ENGINE MALFUNCTION INDICATOR LAMP MIL B ACTIVATION OF CHECK ENGINE MALFUNCTION INDICATOR LAMP MIL 1 When ignition switch is turned to ON engine off the CHECK ENGINE malfunction indicator lamp MIL in the combination meter illuminates NOTE If the MIL does not illuminate perform diagnostics of the CHECK ENGINE light circuit or the combina tion meter circuit Ref to

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