THE ENGINE CONTROL SYSTEM UTILIZES A MICROCOMPUTER AND MAINTAINS OVERALL CONTROL OF THE ENGINE AN OUTLINE OF ENGINE CONTROL IS GIVEN HERE.

Transcription

1 ENINE CONTO THE ENINE CONTO SYSTEM UTIIZES A MICOCOMUTE AND MAINTAINS OVEA CONTO OF THE ENINE AN OUTINE OF ENINE CONTO IS IVEN HEE.. INUT SINAS () ATE TEM. SINA SYSTEM THE ATE TEM. SENSO DETECTS THE ENINE COOANT TEM. AND HAS A UIT IN THEMISTO ITH A ESISTANCE HICH VAIES ACCODIN TO THE ATE TEM. THUS THE ATE TEM. IS INUT IN THE FOM OF A CONTO SINA TO TEMINA TH OF THE ECU. () INTAKE AI TEM. SINA SYSTEM THE INTAKE AI TEM. SENSO IS INSTAED INSIDE THE AI FO METE AND DETECTS THE INTAKE AI TEM. HICH IS INUT AS A CONTO SINA TO TEMINA THA OF THE ECU. () OXYEN SENSO SINA SYSTEM THE OXYEN DENSITY IN THE EXHAUST EMISSIONS IS DETECTED AND INUT AS A CONTO SINA TO TEMINA OX OF THE ECU. TO MAINTAIN STAE DETECTION EFOMANCE Y THE OXYEN SENSO, A HEATE IS USED FO AMIN THE SENSO. THE HEATE IS ASO CONTOED Y THE ECU (HT). () M SINA SYSTEM CANKSHAFT OSITION IS DETECTED Y THE ICK U COI INSTAED INSIDE THE DISTIUTO. CANKSHAFT OSITION IS INUT AS A CONTO SINA TO TEMINAS AND OF THE ECU, AND M IS INUT TO TEMINA NE. () THOTTE SINA SYSTEM THE THOTTE OSITION SENSO DETECTS THE THOTTE VAVE OENIN ANE HICH IS INUT AS A CONTO SINA TO TEMINA VTA OF THE ECU, O HEN THE VAVE IS FUY COSED, TO TEMINA ID. (6) VEHICE SEED SINA SYSTEM THE SEED SENSO, INSTAED INSIDE THE COMINATION METE, DETECTS THE VEHICE SEED AND INUTS A CONTO SINA TO TEMINA SD OF THE ECU. (7) A/C S SINA SYSTEM THE OEATIN VOTAE OF THE A/C MANET CUTCH IS DETECTED AND INUT IN THE FOM OF A CONTO SINA TO TEMINA A/C OF THE ECU. (8) ATTEY SINA SYSTEM VOTAE IS CONSTANTY AIED TO TEMINA ATT OF THE ECU. HEN THE INITION S IS TUNED TO ON, VOTAE FO ECU OEATION IS AIED VIA THE EFI MAIN EAY TO TEMINAS + AND OF THE ECU. (9) INTAKE AI VOUME SINA SYSTEM INTAKE AI VOUME IS DETECTED Y THE OTENTIOMETE INSTAED INSIDE THE AI FO METE AND IS INUT AS A CONTO SINA TO TEMINA VS OF THE ECU. (0) STO IHT S SINA SYSTEM THE STO IHT S IS USED TO DETECT HETHE O NOT THE VEHICE IS AKIN AND THE INFOMATION IS INUT AS A CONTO SINA TO TEMINA ST OF THE ECU. () STA SINA SYSTEM TO CONFIM THAT THE ENINE IS CANKIN, THE VOTAE AIED TO THE STATE MOTO DUIN CANKIN IS DETECTED AND IS INUT AS A CONTO SINA TO TEMINA STA OF THE ECU. () ENINE KNOCK CONTO SYSTEM ENINE KNOCKIN IS DETECTED Y THE KNOCK SENSO AND INUT AS A CONTO SINA TO TEMINA KNK OF THE ECU. () EECTICA IDE U SYSTEM THE SINA HEN SYSTEMS SUCH AS THE EA INDO DEFOE, HEADIHTS, ETC. HICH CAUSE A HIH EECTICA UDEN AE ON IS INUT TO TEMINA ES AS A CONTO SINA.. CONTO SYSTEM * EFI (EECTONIC FUE INJECTION) SYSTEM THE EFI SYSTEM MONITOS THE ENINE EVOUTIONS THOUH THE SINAS EACH SENSO (INUT SINAS () TO ()) INUTS TO THE ECU. ASED ON THIS DATA AND THE OAM MEMOIZED IN THE ECU. THE MOST AOIATE FUE INJECTION TIMIN IS DECIDED AND CUENT IS OUTUT TO TEMINAS #, #, # AND # OF THE ECU. CAUSIN THE INJECTOS TO OEATE (TO INJECT FUE). IT IS THIS SYSTEM HICH, THOUH THE OK OF THE ECU. FINEY CONTOS FUE INJECTION IN ESONSE TO DIVIN CONDITIONS. * ESA (EECTONIC SAK ADVANCE) SYSTEM THE ESA SYSTEM MONITOS THE ENINE EVOUTIONS USIN THE SINAS (INUT SINAS (,,, 6, 7, 9, )) INUT TO THE ECU FOM EACH SENSO. ASED ON THIS DATA AND THE OAM MEMOIZED IN THE ECU. THE MOST AOIATE INITION TIMIN IS DECIDED AND CUENT IS OUTUT TO TEMINA IT OF THE ECU. THIS OUTUT CONTOS THE INITE TO ODUCE THE MOST AOIATE INITION TIMIN FO THE DIVIN CONDITIONS. * FUE UM CONTO SYSTEM COMUTE OEATION OUTUTS TO TEMINA F AND CONTOS THE FUE UM CONTO EAY AND THUS CONTOS THE FUE UM DIVE SEED IN ESONSE TO CONDITIONS. SYSTEM OUTINE

2 * OXYEN SENSO HEATE CONTO SYSTEM THE OXYEN SENSO HEATE CONTO SYSTEM TUNS THE HEATE TO ON HEN THE INTAKE AI VOUME IS O (TEM. OF EXHAUST EMISSIONS O). AND AMS U THE OXYEN SENSO TO IMOVE DETECTION EFOMANCE OF THE SENSO. THE ECU EVAUATES THE SINAS FOM EACH SENSO (INUT SINAS (, 6, 8, 9, )), CUENT IS OUTUT TO TEMINA HT AND CONTOS THE HEATE. * ISC (IDE SEED CONTO) SYSTEM THE ISC SYSTEM (OTAY SOENOID TYE) INCEASES THE M AND OVIDES IDIN STAIITY FO FAST IDE U HEN THE ENINE IS COD AND HEN THE IDE SEED HAS DOED DUE TO EECTICA OAD, ETC. THE ECU EVAUATES THE SINAS FOM EACH SENSO (INUT SINAS (, TO 8,, )), OUTUTS CUENT TO TEMINAS SC AND SO AND CONTOS THE ISC VAVE. * E CONTO SYSTEM ITH THE E CONTO SYSTEM, THE ECU EVAUATES THE (INUT SINAS (,, 0)), FOM EACH SENSO, CUENT IS OUTUT TO TEMINA E AND OEATION OF THE E VAVE IS CONTOED. * INTAKE AI CONTO SYSTEM IN THE INTAKE AI CONTO SYSTEM, EACH CYINDE IN THE INTAKE MANIFOD IS DIVIDED INTO TO ATS, ITH AN INTAKE AI CONTO VAVE INSTAED IN THE ASSAE ON ONE SIDE. THE OENIN AND COSIN OF THE VAVE OVIDES THE MOST AOIATE INTAKE AI FO AND, AS E AS EVENTIN EFOMANCE OSS AT O SEEDS, ASO IMOVES FUE ECONOMY. THE ECU EVAUATES THE SINAS FOM EACH SENSO (INUT SINAS (,, )), OUTUTS CUENT TO TEMINA T VIS CONTOS THE VSV (FO T VIS) AND, CAIES OUT OENIN AND COSIN OF THE VAVE.. DIANOSIS SYSTEM ITH THE DIANOSIS SYSTEM, HEN THEE IS A MAFUNCTION IN THE ECU SINA SYSTEM, THE MAFUNCTIONIN SYSTEM IS ECODED IN THE MEMOY. THE MAFUNCTIONIN SYSTEM CAN THEN E FOUND Y EADIN THE DISAY (CODE) OF THE CHECK ENINE ANIN IHT.. FAI SAFE SYSTEM HEN A MAFUNCTION OCCUS IN ANY SYSTEM, IF THEE IS A OSSIIITY OF ENINE TOUE EIN CAUSED Y CONTINUED CONTO ASED ON THE SINAS FOM THAT SYSTEM. THE FAI SAFE SYSTEM EITHE CONTOS THE SYSTEM Y USIN DATA (STANDAD VAUES) ECODED IN THE ECU MEMOY O ESE STOS THE ENINE.

3 ENINE CONTO O AM ST 7 I8 0 AM I 9 0 IE 7 IE E E 6 E I9 INITION S E7 E EFI ESISTO 0 E O O O TO CUTCH STAT S I STATE EAY C7 CICUIT OENIN EAY I6 6 8 O O IE F0 FUE UM ESISTO 9 E IE FUE UM CONTO EAY 0 IE 7 0A F AM 00A F AT 0A F AM I INJECTO NO. F FUSIE INK OX O I INJECTO NO. O I6 INJECTO NO. O Y INJECTO NO. O J/ NO. E A I F7 FUE UM I IF M F MAIN. 0 Y ATTEY 6

4 O O FOM OE SOUCE SYSTEM (SEE AE 6) 7. A IN A EFI A STO A TAI A AUE 8 I 9 I EFI MAIN EAY 7 O 8 H E A 0 C C 7 7 I D A A A A A A ATT S7 STO IHT S C C ST J JUNCTION CONNECTO Y FOM DEFOE S DIODE 6 O D ES E,E C,E6 A ENINE ECU 9 7 E A J/ NO. C0, C A CHECK ENINE [COM. METE] I6 Y + + F FC # # # # SD ACT A/C STJ 6 A 7 9 A A 0 A 0 J JUNCTION CONNECTO IJ I Y SEED SENSO [COM. METE] C A 6 A A ACT A8 A/C AMIFIE J6 JUNCTION CONNECTO (FO EATH) 6 C D TO A/C MANET CUTCH EAY FOM STAT INJECTO TIME S ES TO COD STAT INJECTO E ID 7

5 ENINE CONTO O E9 O O E E7 O I INITION COI TO TACHOMETE E9 V I V VSV (FO T VIS) ISC VAVE VSV (FO E SYSTEM) V VSV (FO TUO CHAIN ESSUE) + + TAC D I DISTIUTO INITIO NE IT IF O Y (SEAED) 8 TVIS 9 SC SO E 6 TC A STA 6 C NE 0 IT IF E,E C,E6 A ENINE ECU VTA C ID C VC C IM C TH C E 9 C TH 0 C E7 ES E9 T TUO CHAIN ESSUE SENSO VC IM E TO OOST METE [COM. METE] ES E EFI ATE TEM. SENSO E E AS TEM. SENSO (FO CAIFONIA) E SHOT IN (EX. CAIFONIA) TO CUISE CONTO ECU T THOTTE OSITION SENSO E9 E7 8

6 8 8 I + F E + E VF TE OX HT C CHECK CONNECTO 9 6 OX O OXYEN SENSO (SEAED) V Y O (SEAED) 8 C VF C T C OX 8 HT 6 C OX THA C VS C E,E C,E6 A ENINE ECU EO 6 EO E KNK C (SEAED) (SEAED) 7 6 THA VS A K AI FO KNOCK METE SENSO E VC EC 9

7 ENINE CONTO SEVICE HINTS EFI MAIN EAY : COSED ITH INITION S AT ON O ST OSITION E EFI ESISTO,,, : 7 Ω I, I, I 6, I 7 INJECTO : Ω F0 FUE UM ESISTO : AOX. 7 Ω A AI FO METE : COSED ITH STATE UNNIN O MEASUIN ATE OEN 6 : Ω (MEASUIN ATE COSED) Ω (MEASUIN ATE OEN) : Ω 7 : 0 0 K ( 0 C, F) 7 KΩ (0 C, F) KΩ (0 C, 68 F) 0.9. KΩ (0 C, 0 F) KΩ (60 C, 0 F) E EFI ATE TEM. SENSO : 0 0 KΩ ( 0 C, F) 7 KΩ (0 C, F) 7 KΩ (0 C, 68 F) 0.9. KΩ (0 C, 0 F) KΩ (60 C, 0 F) KΩ (80 C, 76 F) T THOTTE OSITION SENSO : KΩ ITH CEAANCE ETEEN EVE AND STO SCE 0 MM (0 IN) : ESS THAN. KΩ ITH CEAANCE ETEEN EVE AND STO SCE 0.0 MM (0.00 IN) Ω ITH 0.7 MM (0.08 IN.) :. 0 KΩ ITH THOTTE VAVE FUY OEN : 8 KΩ E, E, E 6 ENINE ECU VOTAE AT ECU CONNECTOS ATT E : 0 VOTS +, + E : 0 VOTS (INITION S ON) ID E : 6 VOTS (INITION S ON AND THOTTE VAVE OEN) VTA E : 0..0 VOTS (INITION S ON AND THOTTE VAVE FUY COSED) 6 VOTS (INITION S ON AND THOTTE VAVE OEN) VC E : 6 VOTS (INITION S ON) VS E : 6 VOTS (INITION S ON AND MEASUIN ATE FUY COSED).0 VOTS O ESS (INITION S ON AND MEASUIN ATE FUY OEN).0.0 VOTS (IDIN).0.0 VOTS (000 M) THA E :.0.0 VOTS (INITION S ON AND INTAKE AI TEM. 0 C, (68 F)) TH E : 0..0 VOTS (INITION S ON AND COOANT TEM. 80 C, (76 F)) STA E : 6 VOTS (CANKIN) #, #, #, # E0, E0 : 0 VOTS (INITION S ON) IT E : VOTS (CANKIN O IDIN) TVIS E :.0 VOTS O ESS ITH INITION S ON AND THOTTE VAVE FUY COSED 0 VOTS ITH INITION S ON AND THOTTE VAVE OEN.0 VOTS O ESS IDIN 0 VOTS ITH 00 M O MOE T E : 0 VOTS ITH INITION S ON AND CHECK CONNECTO T E NO CONNECT 0. VOTS O ESS ITH INITION S ON AND CHECK CONNECTO T E CONNECT A/C E : 8 VOTS ITH INITION S ON A/C SITCH ON SO, SC E : 9 VOTS (INITION S ON) IM E :.. VOTS (INITION S ON) E : 0 VOTS (NO TOUE (CHECK ENINE ANIN IHT OFF) AND ENINE UNNIN) ESISTANCE AT ECU CONNECTOS (DISCONNECT IIN CONNECTO FOM ECU) ID E : INFINITY (THOTTE VAVE OEN) ESS THAN 00 Ω (THOTTE VAVE FUY COSED) VTA E : Ω (THOTTE VAVE OEN) Ω (THOTTE VAVE FUY COSED) VS E : Ω (MEASUIN ATE FUY COSED) 0 00 Ω (MEASUIN ATE FUY OEN) THA E : Ω (INTAKE AI TEM. 0 C, 68 F) TH E : Ω (COOANT TEM. 80 C, 76 F), : 0 80 Ω NE : 80 0 Ω SC, SO +, + : Ω 60

8 : ATS OCATION CODE SEE AE CODE SEE AE CODE SEE AE A E 6 A 6 J 6 A8 6 F0 J 6 6 C F K C 7 6 F7 7 O C0 6 I S 7 6 C A 6 I T D I T E I V E I V E I 6 V E 6 I 7 E C 6 I 9 6 : EAY OCKS CODE SEE AE EAY OCKS (EAY OCK OCATION) / NO. (IHT KICK ANE) / NO. (ENINE COMATMENT FONT IHT) : JUNCTION OCK AND IE HANESS CONNECTO CODE SEE AE JUNCTION OCK AND IE HANESS (CONNECTO OCATION) A D 8 CO IE AND J/ NO. (EFT KICK ANE) E H 8 ENINE OOM MAIN IE AND J/ NO. (EFT KICK ANE) A 0 ENINE OOM MAIN IE AND J/ NO. (NEA THE ATTEY) C 0 ENINE IE AND J/ NO. (NEA THE ATTEY) D E 0 ENINE OOM MAIN IE AND J/ NO. (NEA THE ATTEY) CO IE AND J/ NO. (EHIND COMINATION METE) : CONNECTO JOININ IE HANESS AND IE HANESS CODE SEE AE JOININ IE HANESS AND IE HANESS (CONNECTO OCATION) E 8 ENINE IE AND CO IE (EA SIDE OF IHT FONT FENDE) ES 8 ENINE IE AND ENINE OOM NO. IE (NEA THE DISTIUTO) IE IE 0 ENINE OOM MAIN IE AND CO IE (EFT KICK ANE) IF 0 FOO IE AND CO IE (EFT KICK ANE) I I 0 ENINE IE AND CO IE (UNDE THE ENINE ECU) IJ CO IE AND A/C NO. IE (EHIND THE OVE OX) FOO IE AND UAE OOM IE (EFT QUATE ANE CENTE) : OUND OINTS CODE SEE AE OUND OINTS OCATION E 8 FONT EFT FENDE EC 8 INTAKE MANIFOD ID 0 EFT KICK ANE ACK ANE CENTE : SICE OINTS CODE SEE AE IE HANESS ITH SICE OINTS CODE SEE AE IE HANESS ITH SICE OINTS E 8 ENINE OOM MAIN IE I E I 6 CO IE E 7 8 ENINE IE I 7 ENINE IE E 9 I 8 CO IE 6

9 ENINE CONTO 6

10 6