ENGINE CONTROL RUNNER (EWD425U) B- R II4 G- B GR- B B- R B- R FROM POWER SOURCE SYSTEM (SEE PAGE 48) 4 1I W- L G- B 10A IGN 10A STOP 20A EFI BZ1

Transcription

1 ENINE CONTRO R- I 7 J FROM POER SOURCE SYSTEM (SEE PE 8) 7 M I 6 ST 8 - R I INITION S STRTER REY 0 F - 0 IN EFI REY R- - R 0 EFI - R F 0 STOP 7 I S STOP IHT S - Y - R Z N IE - - R - R - - I I D D D 0 M TTERY 0 M 0 T J J JUNCTION CONNECTOR J 7 J 8 JUNCTION CONNECTOR 6 I C 6 CIRCUIT OPENIN REY - O F0 FUE PUMP - E IE - O M - Y - I - Y - - E H 8 00 RUNNER (EDU)

2 I0 R- R- Y - - R E E E 9 E0 E C E D ENINE CONTRO MODUE - Y - - C FC IS ST TH V E E VC VT VT TH E E 7 E 0 C 8 - Y V 8 VSV (VPOR PRESSURE SENSOR) - R C - - I0 -R -R -R -R I0 I0 I0 E 6 E 0 E 0 E 6 8 D + TT STP TP MRE #0 #0 #0 #0 #0 #60 NS - 6 R- Y R- Y R- Y R- Y Z N IE M MSS IR FO METER Y- I 6 INJECTOR NO. R- R - TH V E + R- R- I I 7 INJECTOR NO. E I0 I 8 INJECTOR NO. T THROTTE POSITION SENSOR I0 I 9 INJECTOR NO. - Y I0 R- - Y I0 INJECTOR NO. EC I0 E ENINE COONT TEMP. SENSOR - - Y I INJECTOR NO. 6 Y -R EC 8 CCE POSITION SENSOR 6 E 6 I F E E R 7. ST - VP VP 0 C C TO DD CTUTOR D D VC VP VP I RUNNER (EDU) 9

3 ENINE CONTRO FROM POER SOURCE SYSTEM (SEE PE 8) 8 F - Y 9 V 0 UE C9 MFUNCTION INDICTOR MP [COM. METER] I ETCS K KNOCK SENSOR NO. E E E E I0 E R R K KNOCK SENSOR NO. E 8 E +M KNK KNK E 9 E0 E C E D E E ENINE CONTRO MODUE PTNK EVP CCV TC HT OX F+ F- 6 HTF V VPOR PRESSURE SENSOR IE N VC IE Y Y Y Y N PTNK E V 7 VSV (EVP) - V VSV (CNISTER COSED VVE) D DT INK CONNECTOR R TC H HETED OXYEN SENSOR (NK SENSOR ) - Y HT + E + E OX I0 I0 7 IR FUE RTIO SENSOR N IE I0 I0 I0 I RUNNER (EDU)

4 I0 * : / THEFT DETERRENT SYSTEM C C CRNKSHFT CMSHFT POSITION SENSOR POSITION SENSOR I0 R TO SECURITY INDICTOR IHT [CENTER CUSTER S] TO UNOCK RNIN S T 6 TRNSPONDER KEY MPIFIER CODE R- R (*) RXCK R- (*) TXCT P- (*) R T 7 THROTTE CONTRO MOTOR ND CUTCH M+ M- C+ C- I0 E E IMD KS O 8 PS 6 E P (*) Y- R (*) EOM 0 E E 8 E 9 E CODE RXCK TXCT E0 8 Y NE+ NE- SP E E0 E0 E0 9 C 8 C 7 M+ M- C+ C- E0 ME0 6 (*) I0 E 9 E0 E C E D E E ENINE CONTRO MODUE E 6 E (*) P POER STEERIN OI PRESSURE S FROM COMINTION METER I0 J 9 JUNCTION CONNECTOR IF EC 00 RUNNER (EDU) 6

5 ENINE CONTRO I0 I0 I0 I INITION COI NO. R I INITION COI NO. I INITION COI NO. TO COMINTION METER FROM POER SOURCE SYSTEM (SEE PE 8) 7. OD IC IC IC + EXT IT IT IT IF 7 6 V I J 6 JUNCTION CONNECTOR R- 0 9 E 8 D 7 D 9 D 8 D E FSE E 9 E FSE V 7 6 SI T S C 8 ND C I INITER C - - Y - - Y CT R- - Y * : UTOMTIC IR CONDITIONIN * : MNU IR CONDITIONIN IT IT IT IF SI NEO 8 D TRC+ EN- TRC- EN+ C V- E 9 E0 E C E D ENINE CONTRO MODUE R- D 7 DT INK CONNECTOR - Y Y- E E P 7 8 NEO TRC+ TRC- EN+ EN (*) (*) V9 VSC ECU 0 /C MPIFIER J JUNCTION CONNECTOR EC IE 6 00 RUNNER (EDU)

6 SYSTEM OUTINE The engine control system utilize a microcomputer and maintains overall control of the engine transmission etc. n outline of engine control is given here.. INPUT SIN () Engine coolant temp. signal system The engine coolant temp. sensor detects the engine coolant temp. and has a built-in thermistor with a resistance which varies according to the engine coolant temp. The engine coolant temp. is input as a control signal to TERMIN TH of the engine control module. () Heated oxygen sensor signal system The oxygen density in the exhaust emissions is detected and input as a control signal to TERMIN OX of the engine control module. To maintain stable detection performance by the heated oxygen sensor the heated oxygen sensors are warmed. The heater is also controlled by the engine control module (HT). () RPM signal system Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor camshaft position is input as a control signal to TERMIN of the engine control module and engine RPM is input to TERMIN NE+. () Throttle signal system The throttle position sensor detects the throttle valve opening angle which is input as a control signal to TERMINS VT and VT of the engine control module. () Vehicle speed signal system The vehicle speed sensor detects the vehicle speed and input to S speed sensor of the VSC ECU from VSC ECU to TERMIN SP of the engine control module via combination meter. (6) /C S signal system The operating voltage of the /C magnetic clutch is detected and input as a control signal to TERMIN C of the engine control module. (7) attery signal system Voltage is constantly applied to TERMIN TT of the engine control module. hen the ignition S is turned to on voltage for engine control module operation is applied via the EFI relay to TERMIN + of the engine control module. (8) Intake air volume signal system Intake air volume is detected by the mass air flow meter and a signal is input into TERMIN V of the engine control module as a control signal. (9) Stop light S signal system The stop light S is used to detect whether or not the vehicle is braking and the information is input as a control signal to TERMIN STP of the engine control module. (0) Starter signal system To confirm that the engine is cranking the voltage applied to the starter motor during cranking is detected and is input as a control signal to TERMIN ST of the engine control module. () Engine knock signal system Engine knocking is detected by the knock sensor no. and no. and the signals are input to TERMINS KNK and KNK of the engine control module. () D signal system (D) hether or not the vehicle is operating in D mode is determined and a control signal is input to TERMIN D of the engine control module. () Intake air temp. signal circuit The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp. which is input as a control signal into TERMIN TH of the engine control module. () ir fuel ratio signal system The air fuel ratio is detected and input as a control signal into TERMIN F+ of the engine control module. 00 RUNNER (EDU) 6

7 ENINE CONTRO. CONTRO SYSTEM SFI system The SFI system monitors the engine conditions through the signals each sensor inputs to the engine control module. ased on this data and the program memorized in the engine control module the most appropriate fuel injection timing is detected and current is output to TERMINS #0 #0 #0 #0 #0 ND #60 of the engine control module causing the injectors to operate (to inject fuel). It is this system which through the work of the engine control module finely controls fuel injection in response to driving conditions. ES system The ES system monitors the engine conditions using the signals input to the engine control module from each sensor. ased on this data and the program memorizes in the engine control module the most appropriate ignition timing is decided and current is output to TERMINS IT IT and IT of the engine control module. This output controls the igniter to produce the most appropriate ignition timing for the driving conditions. Heated oxygen sensor heater control system The heated oxygen sensor heater control system turns the heater to on when the intake air volume is low (Temp. of exhaust emissions is low). nd warms up the heated oxygen sensors to improve detection performance of the sensors. The engine control module evaluates the signals from each sensor current is output to TERMIN HT and controls the heater.. DINOSIS SYSTEM ith the diagnosis system when there is a malfunction in the ECU signal system the malfunctioning system is recorded in the memory. The malfunctioning system can then be found by reading the display (Code) of the malfunction indicator lamp.. FI- SFE SYSTEM hen a malfunction occurs in any system if there is a possibility of engine being caused by continued control based on the signals from that system the fail-safe system either controls the system by using data (Standard values) recorded in the engine control module memory or else stops the engine. SERVICE HINTS EFI REY - : Closed with ignition S at ON or ST position C6 CIRCUIT OPENIN REY - : Closed with starter running or ignition S at ON position I6 I7 I8 I9 I0 I INJECTOR - :.-. Ω E ENINE COONT TEMP. SENSOR - : 0-0 kω (-0 C - F) - 7 kω (0 C F) - kω (0 C 68 F) kω (0 C 0 F) kω (60 C 0 F) kω (80 C 76 F) E9 () E0 () E (C) E (D) E (E) ENINE CONTRO MODUE Voltage at engine control module wiring connectors +-E : 9- volts (Ignition S on) TT-E : 9- volts (lways) VC-E :.-. volts (Ignition S on) VT-E : pprox. 0.6 volts (Ignition S on and throttle valve fully closed) pprox. volts (ignition S on and throttle valve fully open) ST-E : 6 volts or more (Ignition S at ST position) -E : 9- volts (No trouble and engine running) TH-E : volts (Ignition S on and coolant temp. 80 C 76 F) SP-E : Pulse generation with vehicle moving STP-E : 7.- volts (Stop light S on) IT IT IT-E : Pulse generation (Cranking or idling) #0 #0 #0 #0 #0 #60-E : 9- volts (Ignition S on) RESISTNCE T ECU IRIN CONNECTOR (Disconnect wiring connector) TH-E : kω (Coolant temp. 80 C 76 F) NE+-E : 0-80 Ω 6 00 RUNNER (EDU)

8 : PRTS OCTION Code See Page Code See Page Code See Page 0 H 8 J8 7 8 I 9 J9 0 0 I 9 K I 9 K 9 C 8 I 9 M 9 C 8 I6 9 P 9 C6 0 I7 9 S C9 0 I8 9 T 9 D 8 I9 9 T6 D7 0 I0 9 T7 9 E 8 I 9 V E9 I V7 9 E0 J 9 V8 E C J 9 V 9 E D J V9 E E J6 F0 J7 : REY OCKS Code See Page Relay locks (Relay lock ocation) Engine Room R/ (Engine Compartment eft) : JUNCTION OCK ND IRE HRNESS CONNECTOR Code See Page Junction lock and ire Harness (Connector ocation) F Cowl ire and Driver Side J/ (ower Finish Panel) I Engine Room Main ire and Driver Side J/ (ower Finish Panel) J Cowl ire and Driver Side J/ (ower Finish Panel) C E 6 Cowl ire and Center J/ (Near the Steering Column Tube) : CONNECTOR JOININ IRE HRNESS ND IRE HRNESS Code See Page Joining ire Harness and ire Harness (Connector ocation) E 6 Sensor ire and Engine ire (Front Side of Cylinder Head Cover Right) EC 6 Engine ire and ater Temp. Sensor ire (Front Side of Cylinder Head Cover Right) IE IE 8 Cowl ire and Floor No. ire (eft Kick Panel) I 8 Engine Room Main ire and Cowl ire (eft Kick Panel) 0 Engine ire and Cowl ire (On the love ox) N Frame ire and Floor No. ire (Under the eft Side of Rear Seat Cushion) Z Frame ire and Frame No. ire (Upper the Rear xle Housing eft) : ROUND POINTS Code See Page round Points ocation E 6 Front eft Fender EC 6 Intake Manifold eft IE 8 Cowl Side Panel H IF 8 Cowl Side Panel RH H eft Quarter Panel Inner 00 RUNNER (EDU) 6

9 ENINE CONTRO : SPICE POINTS Code See Page ire Harness with Splice Points Code See Page ire Harness with Splice Points E 6 Engine ire I 0 Cowl ire E 6 Sensor ire I0 0 Engine ire RUNNER (EDU)

10 MEMO 00 RUNNER (EDU) 67