ENGINE CONTROL (5VZ-FE)
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- Antony Rice
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1 SYSTEM OUTLINE ENGINE CONTROL (Z-E) THE ENGINE CONTROL SYSTEM UTILIZES A MICROCOMPUTER AND MAINTAINS OERALL CONTROL O THE ENGINE, TRANSMISSION, ETC. AN OUTLINE O ENGINE CONTROL IS GIEN HERE.. INPUT SIGNAL () ENGINE COOLANT TEMP. SIGNAL SYSTEM THE ENGINE COOLANT TEMP. SENSOR DETECTS THE ENGINE COOLANT TEMP. AND HAS A UILT-IN THERMISTOR ITH A RESISTANCE HICH ARIES ACCORDING TO THE ATER TEMP. THUS THE ATER TEMP. IS INPUT IN THE ORM O A CONTROL SIGNAL TO TERMINAL TH O 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 TERMINAL OX OR OX O THE ENGINE CONTROL MODULE. TO MAINTAIN STALE DETECTION PERORMANCE Y THE HEATED OXYGEN SENSOR, A HEATER IS USED OR ARMING THE SENSOR. THE HEATER IS ALSO CONTROLLED Y THE ENGINE CONTROL MODULE (HT OR HT). () RPM SIGNAL SYSTEM CAMSHAT POSITION AND CRANKSHAT POSITION ARE DETECTED Y THE CAMSHAT POSITION SENSOR AND CRANKSHAT POSITION SENSOR. CAMSHAT POSITION IS INPUT AS A CONTROL SIGNAL TO TERMINAL G O THE ENGINE CONTROL MODULE, AND ENGINE RPM IS INPUT TO TERMINAL NE. (4) THROTTLE SIGNAL SYSTEM THE THROTTLE POSITION SENSOR DETECTS THE THROTTLE ALE OPENING ANGLE, HICH IS INPUT AS A CONTROL SIGNAL TO TERMINAL TA O THE ENGINE CONTROL MODULE. () EHICLE SPEED SIGNAL SYSTEM THE EHICLE SPEED SENSOR, DETECTS THE EHICLE SPEED AND INPUT TO AS SPEED SENSOR O THE AS ECU, ROM AS ECU TO TERMINAL SP O THE ENGINE CONTROL MODULE. () A/C S SIGNAL SYSTEM THE OPERATING OLTAGE O THE A/C MAGNETIC CLUTCH IS DETECTED AND INPUT IN THE ORM O A CONTROL SIGNAL TO TERMINAL AC O THE ENGINE CONTROL MODULE. () ATTERY SIGNAL SYSTEM OLTAGE IS CONSTANTLY APPLIED TO TERMINAL ATT O THE ENGINE CONTROL MODULE. HEN THE IGNITION S IS TURNED TO ON, OLTAGE OR ENGINE CONTROL MODULE OPERATION IS APPLIED IA THE EI RELAY TO TERMINAL + O THE ENGINE CONTROL MODULE. () INTAKE AIR OLUME SIGNAL SYSTEM INTAKE AIR OLUME IS DETECTED Y THE MASS AIR LO METER AND A SIGNAL IS INPUT INTO TERMINAL G O THE ENGINE CONTROL MODULE AS A CONTROL SIGNAL. (9) STOP LIGHT S SIGNAL SYSTEM THE STOP LIGHT S IS USED TO DETECT HETHER OR NOT THE EHICLE IS AKING AND THE INORMATION IS INPUT AS CONTROL SIGNAL TO TERMINAL K O THE ENGINE CONTROL MODULE. (0) STARTER SIGNAL SYSTEM TO CONIRM THAT THE ENGINE IS CRANKING, THE OLTAGE APPLIED TO THE STARTER MOTOR DURING CRANKING IS DETECTED AND IS INPUT AS A CONTROL SIGNAL TO TERMINAL STA O THE ENGINE CONTROL MODULE. () ENGINE KNOCK SIGNAL SYSTEM ENGINE KNOCKING IS DETECTED Y THE KNOCK SENSOR NO. AND NO. AND THE SIGNALS ARE INPUT TO TERMINALS KNK AND KNK O THE ENGINE CONTROL MODULE. () 4D SIGNAL SYSTEM (4D) HETHER OR NOT THE EHICLE IS OPERATING IN 4D MODE IS DETERMINED, AND A CONTROL SIGNAL IS INPUT TO TERMINAL 4D O THE ENGINE CONTROL MODULE. () INTAKE AIR TEMP. SIGNAL CIRCUIT THE INTAKE AIR TEMP. SENSOR IS INSTALLED IN THE MASS AIR LO METER AND DETECTS THE INTAKE AIR TEMP., HICH IS INPUT AS A CONTROL SIGNAL INTO TERMINAL THA O THE ENGINE CONTROL MODULE. 0
2 SYSTEM OUTLINE. CONTROL SYSTEM * SI SYSTEM THE SI SYSTEM MONITORS THE ENGINE CONDITIONS THROUGH THE SIGNALS EACH SENSOR (INPUT SIGNALS ( TO )) INPUTS TO THE ENGLNE CONTROL MODULE. ASED ON THIS DATA AND THE PROGRAM MEMORIZED IN THE ENGINE CONTROL MODULE, THE MOST APPROPRIATE UEL INJECTION TIMING IS DECIDED AND CURRENT IS OUTPUT TO TERMINALS #0, #0, #0, #40, #0 AND #0 O THE ENGINE CONTROL MODULE, CAUSING THE INJECTORS TO OPERATE (TO INJECT UEL). IT IS THIS SYSTEM HICH, THROUGH THE ORK O THE ENGINE CONTROL MODULE, INELY CONTROLS UEL INJECTION IN RESPONSE TO DRIING CONDITIONS. * ELECTRONIC SPARK ADANCE SYSTEM THE ELECTRONIC SPARK ADANCE SYSTEM MONITORS THE ENGINE CONDITIONS USING THE SIGNALS (INPUT SIGNALS (,, 4 TO,, 0, )) INPUT TO THE ENGINE CONTROL MODULE ROM EACH SENSOR. ASED ON THIS DATA AND THE PROGRAM MEMORIZED IN THE ENGINE CONTROL MODULE, THE MOST APPROPRIATE IGNITION TIMING IS DECIDED AND CURRENT IS OUTPUT TO TERMINALS IGT, IGT AND IGT O THE ENGINE CONTROL MODULE. THIS OUTPUT CONTROLS THE IGNITER TO PRODUCE THE MOST APPROPRIATE IGNITION TIMING OR THE DRIING CONDITONS. * HEATED OXYGEN SENSOR HEATER CONTROL SYSTEM THE HEATED OXYGEN SENSOR HEATER CONTROL SYSTEM TURNS THE HEATER TO ON HEN THE INTAKE AIR OLUME IS LO (TEMP. O EXHAUST EMISSIONS LO), AND ARMS UP THE HEATED OXYGEN SENSOR TO IMPROE DETECTION PERORMANCE O THE SENSOR. THE ENGINE CONTROL MODULE EALUATES THE SIGNALS ROM EACH SENSOR (INPUT SIGNALS (,,,, 0)). CURRENT IS OUTPUT TO TERMINAL HT OR HT AND CONTROLS THE HEATER.. DIAGNOSIS SYSTEM ITH THE DIAGNOSIS SYSTEM, HEN THERE IS A MALUNCTION IN THE ECU SIGNAL SYSTEM, THE MALUNCTIONING SYSTEM IS RECORDED IN THE MEMORY. THE MALUNCTIONING SYSTEM CAN THEN E OUND Y READING THE DISPLAY (CODE) O THE MALUNCTION INDICATOR LAMP. 4. AIL-SAE SYSTEM HEN A MALUNCTION OCCURS IN ANY SYSTEM, I THERE IS A POSSIILITY O ENGINE TROULE EING CAUSED Y CONTINUED CONTROL ASED ON THE SIGNALS ROM THAT SYSTEM, THE AIL-SAE SYSTEM EITHER CONTROLS THE SYSTEM Y USING DATA (STANDARD ALUES) RECORDED IN THE ENGINE CONTROL MODULE MEMORY OR ELSE STOPS THE ENGINE.
3 ENGINE CONTROL (Z-E) I IG II H ROM POER SOURCE SYSTEM (SEE PAGE ) R AM IG ST. A IGN A EI 0A STOP I4 IGNITION S J IG G E E G STARTER RELAY EI RELAY 4 G Y G Y IG S 4 STOP LIGHT S IG I I0 0A AM ATTERY R 00A ALT 40A AM TO UL CHECK RELAY [C OM. METER ] IG (M/T) I ( M/T) I A A A (M/T) J A, J JUNCTION CONNECTOR A J JUNCTION C ONNECTOR D D J 4 JUNCTION CONNECTOR IE C CIRCUIT OPENING RE LAY 0 UEL PUMP L O L O L O A A IE 4 M G Y II G Y (M /T) E IE
4 I I I I G G I IN JECTOR NO. I I I I I IN IN R G R L I IN JECTOR NO. Y JECTOR NO. JECTOR NO. JECTOR NO. 4 JECTOR NO. 9 IN I 0 IN G TO ADD INDICATOR S (4D) E A, E, E C, E D, E 9 E, E0, E G, E H ENGINE CONTROL MODULE D D 0 D A A A 0 A 9 A A 9 D (M/T) H 4 H H 0 E 9 E E E E E H + ATT K #0 #0 #0 #40 #0 #0 4D C STA THA G E E PTNK CC TA TH 4 A D 9 4 C 0 4 (M/T) 4 G E 4 0 G Y (M/T) G Y (M/T) II II M MAS S AIR LO ME TER Y G R 4 Y APO R PRESSURE S ENSOR THA G E PTNK CC + E E I G T THR OTTLE POSITIO N SEN SOR G G I I C E Y TA EC E ENGINE COOLANT TE MP. SENSOR G Y G R EC I
5 ENGINE CONTROL (Z-E) ROM POER SOURCE SYSTEM (SEE PAGE ) I Y 0A GAUGE C MALUNCTION INDICATOR LAMP [C OM. METER] (M/T) II NO. Y 4 (SHIELDED E E E E E I I 4 D G C C 0 C C (M/T) 4 4 I I I ) D D K KNOCK SENSOR GR GR O. K KNOCK SENSOR N P C C CRANKSHAT POSITION SENSOR CAMSHAT POSITION SENSOR Y L KNK KNK NE NE G G E A, E, E C, E D ENGINE CONTROL MODULE, E 9 E, E0, E G, E H RSO RSC EP TPC TE HT OX HT OX SP A A A A C 9 C D (M/T) E E G G G E E 9 H I IDLE AIR CONTROL AL E R S (EAP) G S (APOR PRESSURE SENSOR) P D DATA L INK CONNEC TOR H HEATED OXYGEN SE NSOR (ANK SENSOR ) P TE HT OX H 4 HEATED OXYGEN SE NSOR (ANK SENSOR ) + E + E + E R HT R OX 4 G O G O C C ROM SPEEDOMETER [C OM. METER] I I I I I 4
6 I I I ROM PO ER SOURCE SYSTEM (SEE PAGE ) I IGNITION COIL NO. R I 4 IGNIT ION COIL NO. I IGNIT ION COIL NO. O TO TACHOMETER [C OM. METER ]. A OD 0 9 IGC IGC IGC + EXT IG T IG T IG T IG G N D I IG N I TER IG 4 L Y Y A A A A 4 E E E E IG T IG T IG T IG E E0 E0 E0 IDL 4 A A C A 4 A G 4 E E E G ACT 9 D (M /T) H SDL D H AC 0 D H ( M/T) ( A/T) E A, E, E C, E D, E 9 E, E0, E G, E H ENGINE CONTROL MODULE I0 R SDL AT SG 4 4 II II I R Y G L L Y CG D DATA LINK CONNECTOR TO CRUISE CONTROL ECU ROM A/C AMPLIIER E E I I A J 9 JUNCTION CONNECTOR EC EC I
7 ENGINE CONTROL (Z-E) SERICE HINTS EI RELAY () - () : CLOSED ITH IGNITION S AT ON OR ST POSITION C CIRCUIT OPENING RELAY - : CLOSED ITH STARTER RUNNING OR IGNITION S AT ON POSITION I, I, I, I 9, I0, I INJECTOR - :.4-4. Ω T THROTTLE POSITION SENSOR - : - KΩ E ENGINE COOLANT TEMP. SENSOR - : 0-0 KΩ (-0 C, 4 ) 4- KΩ (-0 C, ) - KΩ (-0 C, ) KΩ (-40 C, 04 ) KΩ (-0 C, 40 ) KΩ (-0 C, ) E (A), E (), E (C), E (D), E 9 (E), E0 (), E (G), E (H) ENGINE CONTROL MODULE OLTAGE AT ENGINE CONTROL MODULE IRING CONNECTORS + -E : 9-4 OLTS (IGNITION IRING CONNECTORS ATT -E : 9-4 OLTS (ALAYS) CC -E : OLTS (IGNITION S ON) TA -E : APPROX. 0. OLTS (IGNITION S ON AND THROTTLE ALE ULLY CLOSED) APPROX. 4 OLTS (IGNITION S ON AND THROTTLE ALE ULLY OPEN) IGT, IGT, IGT-E : PULSE GENERATION (CRANKING OR IDLING) STA -E : OLTS OR MORE (IGNITION S AT ST POSITION) #0, #0, #0, #40, #0, #0-E : 9-4 OLTS (IGNITION S ON) -E : 9-4 OLTS (NO TROULE AND ENGINE RUNNING) TH -E : OLTS (IGNITION S ON AND COOLANT TEMP. 0 C, ) SP -E : PULSE GENERATION ITH EHICLE MOING K -E :.-4 OLTS (STOP LIGHT S ON) RESISTANCE AT ECU IRING CONNECTOR (DISCONNECT IRING CONNECTOR) TH -E : KΩ (COOLANT TEMP. 0 C, ) NE -E : 40-0 Ω
8 : PARTS LOCATION CODE SEE PAGE CODE SEE PAGE CODE SEE PAGE C (Z-E) 0 J A (Z-E) C (Z-E) H (Z-E) J (Z-E) C 0 H 4 9 (Z-E) J 4 C 0 I (Z-E) J 9 D (Z-E) I (Z-E) J D 0 I (Z-E) K (Z-E) E (Z-E) I 4 (Z-E) K (Z-E) E A I (Z-E) M (Z-E) E I (Z-E) S 4 E C I (Z-E) T (Z-E) E D I (Z-E) (Z-E) E 9 E I 9 (Z-E) (Z-E) E0 I0 (Z-E) (Z-E) E G I (Z-E) E H I4 : RELAY LOCKS CODE SEE PAGE RELAY LOCKS (RELAY LOCK LOCATION) 0 (USA) (CANADA) ENGINE ROOM R/ (ENGINE COMPARTMENT LET) : JUNCTION LOCK AND IRE HARNESS CONNECTOR CODE SEE PAGE JUNCTION LOCK AND IRE HARNESS (CONNECTOR LOCATION) COIL IRE AND DRIER SIDE J/ (LOER INISH PANEL) H J ENGINE ROOM MAIN IRE AND DRIER SIDE J/ (LOER INISH PANEL) A C D 4 COL IRE AND CENTER J/ (NEAR THE STEERING COLUMN TUE) E : CONNECTOR JOINING IRE HARNESS AND IRE HARNESS CODE SEE PAGE JOINING IRE HARNESS AND IRE HARNESS (CONNECTOR LOCATION) E (Z-E) KNOCK SENSOR IRE AND ENGINE IRE (RONT SIDE O CYLINDER HEAD COER RIGHT) EC (Z-E) ENGINE IRE AND ATER TEMP. SENSOR IRE (RONT SIDE O CYLINDER HEAD COER RIGHT) IE 40 COL IRE AND LOOR NO. IRE (LET KICK PANEL) IG 40 ENGINE ROOM MAIN IRE AND COL IRE (LET KICK PANEL) II II 40 ENGINE IRE AND COL IRE (ON THE GLOE OX) : GROUND POINTS CODE SEE PAGE GROUND POINTS LOCATION E (Z-E) RONT LET ENDER EC (Z-E) INTAKE MANIOLD LET IE 40 COL SIDE PANEL LH I 40 COL SIDE PANEL RH : SPLICE POINTS CODE SEE PAGE IRE HARNESS ITH SPLICE POINTS CODE SEE PAGE IRE HARNESS ITH SPLICE POINTS E I E (Z-E) ENGINE IRE I0 40 COL IRE I 40 COL IRE I 40 ENGINE IRE I 40 ENGINE ROOM MAIN IRE
9 ENGINE CONTROL (Z-E)
10 9
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