ENGINE CONTROL AND ENGINE IMMOBILISER SYSTEM
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- Morris Turner
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1 ENINE CONTRO ND ENINE IMMOIISER SSTEM FROM POER SOURCE SSTEM (SEE PE 0) 7 M I 6 ST 8 O /F HTR O R C 6 C I INITION S C 6 7. IN 6 R IH /F HETER RE CIRCUIT OPENIN RE 8 I 0 M E I M R O F6 FUE PUMP F 9 FUSIE INK OCK I 8 INJECTOR NO. I 9 INJECTOR NO. I0 INJECTOR NO. I INJECTOR NO. I INJECTOR NO. R I INJECTOR NO. 6 I J O O O TTER I 60
2 FROM POER SOURCE SSTEM (SEE PE 0) 0 EFI F C C P 8 D 6 F N I EFI RE 7 J, J R V0 VSV (VPOR PRESSURE SENSOR) P PRK/NEUTR POSITION S IH STRTER C E 6 [ I 6 R 7 IH 6 D 9 D D 7 D + TPC TT ST 0 E NS, E, E 6 E 7 C, E 8 D, E 9 E ENINE CONTRO MODUE MRE 8 D FC D IS D # 60 # 0 #0 # 0 # 0 # 0 C C C C 6 R E O R O 6 EC R ENERTOR J ED 6
3 ENINE CONTRO ND ENINE IMMOIISER SSTEM T TURIN SPEED SENSOR R C COUNTER ER SPEED SENSOR V VSV (CIS NO. ) R E 6 E 6 E 6 E 6 V VSV (CM) V VSV (CIS NO. ) V VSV (EVP) I IDE IR CONTRO VVE R C8 CRUISE CONTRO ECU ID OD FROM FN NO. RE OR FN NO. RE R NT+ NT C NC+ C NC 7 C 7 6 C CIS CM CI EVP RSO E IDO E OD 6 E CF E, E 6, E 7 C, E 8 D, E 9 E ENINE CONTRO MODUE CM V 6 E 0 9 E TH CODE RXCK TXCT 8 E 9 E 8 E IF C IT C R R IT C IT C IT C IT C IT6 6 C V R R O FROM M CT RE M MSS IR FO METER R + CODE RXCK TXCT ND T 6 TRNSPONDER KE MPIFIER NT NT TRNSPONDER KE COI FROM INITION COI ND INITERS TO INITION COI ND INITERS R J IE 6
4 R FROM POER SOURCE SSTEM (SEE PE 0) E 0 STOP S 9 STOP IHT S E H 9 HETED OXEN SENSOR (NK SENSOR ) 9 R R I + E HT OX 8 I 7 I IR FUE RTIO SENSOR (NK SENSOR ) E R E IR FUE RTIO SENSOR (NK SENSOR ) O D DT INK + 8 R TE E R P D 9 E 8 E 0 E STP HTS OXS HFR FR+ FR HF F+ F TC E, E 6, E 7 C, E 8 D, E 9 E ENINE CONTRO MODUE E VT VC TH PTNK OC+ OC OC+ OC KS PS 8 7 D 6 C C 9 C 8 C E 9 R R R R E 6 E 6 I E VT VC IH R R IH E ENINE COONT TEMP. SENSOR R I R 6 I I V 9 VPOR PRESSURE SENSOR C CMSHFT TIMIN OI CONTRO VVE RH R C CMSHFT TIMIN OI CONTRO VVE H U UNOCK RNIN S J 7 P POER STEERIN OI PRESSURE S T THROTTE POSITION SENSOR IF 6
5 ENINE CONTRO ND ENINE IMMOIISER SSTEM R R I R I R R R IH R R J0 V VVT SENSOR H C CRNKSHFT POSITION SENSOR V 6 VVT SENSOR RH R O R I I V R C 6 0 C 7 D E VV NE+ NE VV E SI SPD E, E 6, E 7 C, E 8 D, E 9 E ENINE CONTRO MODUE KNK KNKR MOPS E0 E0 E0 E0 E0 TCH IMD MPX MPX 8 C 7 C 7 C C 0 C 8 6 D 7 E D 8 D D E E E E K KNOCK SENSOR K KNOCK SENSOR O OI PRESSURE S E E EC 9 O IE IJ R R R O 6
6 FROM POER SOURCE SSTEM (SEE PE 0) R 7. OD HETER 0 D R MPX MPX R RER DOOR RH ECU 0 MPX MPX R RER DOOR H ECU 0 O E V IJ V R R K E 0 V C, C C COMINTION METER ECU C 0 C V IM R R R I 0 MPX MPX 0 I F FRONT PSSENER DOOR ECU 0 V V V I IC MPX MPX 0 D D J 6 D7 DRIVER DOOR ECU R S SI 7 O 6 T C D DT INK MPX C MPX 0 D 6 D 6 C 8 IE R R MPX+ O MPX IND I6 INSTRUMENT CONTRO PNE D, 8 OD ECU 7 C R IE R IC R O MFUNCTION INDICTOR MP R K R O EC IF IH 6
7 ENINE CONTRO ND ENINE IMMOIISER SSTEM SSTEM OUTINE The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. n outline of the engine control is given here.. INPUT SINS () Engine coolant temp signal circuit 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. which is input into TERMIN TH of the engine control module as a control signal. () Intake air temp. signal circuit The intake air temp.sensor is installed in the air flow meter and detects the intake air temp. which is input as a control signal to TERMIN TH of the engine control module. () Vehicle speed signal circuit The vehicle speed signal is input from the S speed sensor to S ECU (w/o traction control) or S and traction control ECU (w/traction control), and are sent to the engine control module through communication control. () RPM signal circuit Canshaft position is detected by the VVT sensors and its signal is input to TERMIN VV and VV of the engine control module as a control signal. lso, engine RPM is detected by the crankshaft position sensor and is input as a control signal to TERMIN NE+. () Throttle position signal circuit The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMIN VT of the engine control module. (6) attery signal circuit Voltage is constantly applied to TERMIN TT of the engine control module. ith the ignition S turned on, the voltage for engine control module start up power supply is applied to TERMIN + of the engine control module via the EFI relay. The current flowing through the IN fuse flows to TERMIN IS of the engine control module. (7) Intake air volume signal circuit Intake air volume is detected by the air flow meter and the signal is input into TERMIN V of the engine control module as a control signal. (8) Stop light S signal circuit The stop light S is used to detect whether the vehicle is braking or not and the signal is input into TERMIN STP of the engine control module as a control signal. (9) Start signal circuit To confirm whether the engine is cranking, the voltage is applied to the starter motor during cranking is detected and the signal is input into TERMIN ST of the engine control module as a control signal. (0) Engine knock signal circuit Engine knocking is detected by knock sensors and the signal is input into TERMINS KNK and KNKR as a control signal.. CONTRO SSTEM * SFI system The SFI system monitors the engine condition through the signals input from each sensor (Input signals from () to (0) etc.) to the engine control module. nd the control signal is output to TERMINS #0, #0, #0, #0, #0 and #60 of the engine control module to operate the injector (Inject the fuel). The SFI system controls the fuel injection operation by the engine control module in response to the driving conditions. * ES system The ES system monitors the engine condition through the signals input the engine control module from each sensor (Input signals from () to (0) etc.). The best ignition timing is decided according to this data and the memorized data in the engine control module and the control signal is input to TERMINS IT, IT, IT, IT, IT, and IT6. This signal contols the igniter to provide the best ignition timing for the driving conditions. * CIS The CIS includes a valve in the bulkhaed separating the surge tank into two parts. This valve is opened or closed according to the driving conditions to control the intake manifold length in three stages, for increased engine output in all ranges from low to high speeds, when idling. 66
8 . DINOSIS SSTEM ith the diagnosis system, when there is a malfunctioin in the engine control module signal system, the malfunctioning system is recorded in the memory. The malfunctioning system can be found by reading the code disaplayed by the check engine warning light.. FI SFE SSTEM ith the malfunction has occurred in any system, if there is a possibility of engine trouble being caused by continued control based on the signals from that system, the fail safe system either controls the system by using data (Startard values) recorded in the engine control module memory or else stops the engine. SERVICE HINTS CIRCUIT OPENIN RE : Closed with the starter running EFI RE : Closed with the ignition S at ON or ST position ES (), E6 (), E7 (C), E8 (D), E9 (E) ENINE CONTRO MODUE Voltage at engine control module wiring connector TT E : lways volts + E : volts (Ignition S at ON or ST position) VC E : lways.. volts (Ignition S at ON or ST position) VT E : volts (Ignition S on and throttle valve fully closed)..9 volts (Ignition S on and throttle valve fully open) V E :.. volts (Engine idling and /C S off) TH E : 0.. volts (Engine idling and intake air temp. 0C, 68F TH E : 0..0 volts (Engine idling and coolant temp. 80C, 76F IF E :.. volts (Ignition S at ON position) : Pulse generation (Engine idiling) SI E : Pulse generation (During Transmission) TCH E : Pulse generation (Engine idiling) ST E : 6.0 volts or more (Engine cranking) FC E : volts (Ignition S at ON position) : 0.0 volts (Engine idiling) SPD E : Pulse generation (ignition S on and rotate driving wheel slowly)) E : elow.0 volts (Ignition S at ON position) NS E : volts (Ignition S on and other shift position in P or N position) : 0.0 volts (Ignition S on and shift position in P or N position) EVP E0 : volts (Ignition S at ON position) TC E : elow.0 volts (Ignition S at ON position) STP E : 7..0 volts (Ignition S on and brake pedeal depressed) : 0. volts (Ignition S on and brake pedeal depressed) TPC E0 : volts (Ignition S on and disconnect the vacuum hose from the vapor pressure sensor) PTNK E :.0.6 volts (Ignition S at ON position) :.. volts (Ignition S on and apply vacuum.0 kpa)) OXS E : Pulse generation (Maintain engine speed at 00 rpm for two minutes after warming up) KNK,KNKR E : Pulse generation (Engine idiling) IT, T, IT, IT, IT, IT6 E : Pulse generation (Engine idiling) #0, #0, #0, #0, #0, #60 E0 : volts (Ignition S at ON position) Pulse generation (Engine idiling) 67
9 ENINE CONTRO ND ENINE IMMOIISER SSTEM : PRTS OCTION Code See Page Code See Page Code See Page 0 F K 0 F6 K 0 M 8 D H9 O C 0 I P C 0 I8 P C 0 I9 R C 0 I0 R C I S9 C C I T C8 I T D 0 I T6 D I6 U D7 J V E 0 J V E J V E6 J V E7 C J6 V E8 D J7 V6 E9 E J0 V9 F9 0 J V0 I I 0 Cowl ire and Floor No. ire (eft Kick panel) : RE OCKS Code See Page Relay locks (Relay lock ocation) 7 R/ No. (ower Finish Panel) 8 R/ No. (Engine Compartment eft) : OCK ND IRE HRNESS Code See Page Relay locks (Relay lock ocation) C E F K 0 0 Cowl ire and Instrument Panel J/ (ower Finish Panel) Instrument Panel ire and Instrument Panel J/ (ower Finish Pane) C Cowl ire and Engine Room J/ (Engine Compartment eft) D Engine ire and Engine Room J/ (ower Finish Panel) F I Engine Room Main ire and Engine Room J/(Engine Compartment eft) E K Instrumnet Panel ire and J/ No. (ehind the Instrument Panel Center) E 6 Cowl ire and J/ No. (ehind the Instrument panel left) 68
10 : JOININ IRE HRNESS ND IRE HRNESS Code See Page Junction lock and ire Harness (Connector ocation) E 8 Engine ire and Sensor ire (Head Cover RH) E 8 Engine ire and Engine Room Main ire (Under the Engine Room J/) EC 8 Cowl ire and Engine Room Main ire (Under the Engine Room J/) I 0 Cowl ire and Floor No. ire (eft Kick Panel) I 0 Floor No. ire and Cowl ire (eft Kick Panel) IC 0 Front Door H ire and Cowl ire (eft Kick Panel) IE IE 0 Instrument Panel ire and Cowl ire (eft Kick Panel) IH Engine ire and Cowl ire (ehind the love ox) IJ Cowl ire and Instrument Panel ire (ehind the love ox) I Front Door RH ire and Cowl ire (Right Kick Panel) IM Cowl ire and Floor ire (Right Kick Panel) Rear Door H ire Floor No. ire (Under the eft Center Pillar) Rear Door RH ire Floor ire (Under the (Right Center Pillar) D Floor No. ire and Floor ire (Upper the Rear xle Housing eft) : ROUND POINTS Code See Page round Points ocation E 8 Surge Tank RH IE 0 Rear Side of Surge Tank E 8 Right Radiator Side Suipport E 8 Cowl Side Panel H IE 0 Dash Panel Center IE 0 Instruction Panel race RH IE 0 Upper the Rear xle Housing eft : SPICE POINTS Code See Page ire Harness with Splice Points Code See Page ire Harness with Splice Points E 6 Cowl ire E 8 Engine ire I Engine ire E6 I Cowl ire Cowl ire 69
11 ENINE CONTRO ND ENINE IMMOIISER SSTEM () 8 (D) C DRK R DRK R CK X X X X X X X 6 X 0 C CK C CK C CK C () 6 C (C) C8 D CK X 0 X 7 X X X X X X X 8 X X X X X X X X X X D D7 E DRK R X X 0 6 X X X X X X X X X 7 X X X X 70
12 E () E6 () E7 (C) E8 (D) X X X X X X X E9 (E) F9 F F6 (See Page 7) X X X 6 X 8 9 X X X X X X X X0 X X H9 I I8 I9 I0 CK DRK R CK R R R I R I R I R I I6 X X J R J () CK J () J C C J6 J7 J0 ORNE J ORNE X X X C C X X X D D D C C X X X X X X 7
13 ENINE CONTRO ND ENINE IMMOIISER SSTEM K K M O DRK R DRK R CK R P R P CK R X 6 X X X X X X X R S9 T CK T CK X X X X X X T6 U V V V RON RON UE V V V6 V9 V0 UE CK CK CK UE 7
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