SSTEM OUTLINE THE TCCS SSTEM UTILIZES A MICOCOMPUTE AND MAINTAINS OVEALL CONTOL OF THE E/G, T/M, ETC. AN OUTLINE OF ENGINE CONTOL IS GIVEN HEE.. INPUT SIGNALS () ATE TEMP. SIGNAL SSTEM THE ATE TEMP. SENSO DETECTS THE E/G COOLANT TEMP. AND HAS A UILT IN THEMISTO ITH A ESISTANCE HICH VAIES ACCODING TO THE ATE TEMP. THUS THE ATE TEMP. IS INPUT IN THE FOM OF A CONTOL SIGNAL TO TEMINAL TH OF THE TCCS ECU. () INTAKE AI TEMP. SIGNAL SSTEM THE INTAKE AI TEMP. SENSO IS INSTALLED INSIDE THE AI FLO METE AND DETECTS THE INTAKE AI TEMP., HICH IS INPUT AS A CONTOL SIGNAL TO TEMINAL THA OF THE ECU. () OX SENSO SIGNAL SSTEM THE OXGEN DENSIT IN THE EXHAUST EMISSIONS IS DETECTED AND INPUT AS A CONTOL SIGNAL TO TEMINAL OX OF THE ECU. TO MAINTAIN STALE DETECTION PEFOMANCE THE OX SENSO, A HEATE IS USED FO AMING THE SENSO. THE HEATE IS ALSO CONTOLLED THE ECU (HT). (4) PM SIGNAL SSTEM CANKSHAFT POSITION AND E/G PM AE DETECTED THE PICK UP COIL INSTALLED INSIDE THE DISTIUTO. CANKSHAFT POSITION IS INPUT AS A CONTOL SIGNAL TO TEMINAL G OF THE ECU, AND PM IS INPUT TO TEMINAL NE. (5) THOTTLE SIGNAL SSTEM THE THOTTLE POSITION SENSO DETECTS THE THOTTLE VALVE OPENING ANGLE, HICH IS INPUT AS A CONTOL SIGNAL TO TEMINAL VTA OF THE ECU, O HEN THE VALVE IS FULL CLOSED, TO TEMINAL IDL. (6) VEHICLE SPEED SIGNAL SSTEM THE SPEED SENSO, INSTALLED INSIDE THE COMINATION METE, DETECTS THE VEHICLE SPEED AND INPUTS A CONTOL SIGNAL TO TEMINAL SPD OF THE ECU. (7) A/C S SIGNAL SSTEM THE OPEATING VOLTAGE OF THE A/C MAGNET CLUTCH IS DETECTED AND INPUT IN THE FOM OF A CONTOL SIGNAL TO TEMINAL A/C OF THE ECU. (8) ATTE SIGNAL SSTEM VOLTAGE IS CONSTANTL APPLIED TO TEMINAL ATT OF THE ECU. HEN THE IGNITION S IS TUNED TO ON, VOLTAGE FO ECU OPEATION IS APPLIED VIA THE EFI MAIN ELA TO TEMINALS + AND + OF THE ECU. (9) INTAKE AI VOLUME SIGNAL SSTEM INTAKE AI VOLUME IS DETECTED THE POTENTIOMETE INSTALLED INSIDE THE AI FLO METE AND IS INPUT AS A CONTOL SIGNAL TO TEMINAL VS OF THE ECU. INSIDE THE AI FLO METE THEE IS ALSO A S FO FUEL PUMP OPEATION, AND HEN THE MEASUING PLATE OPENS (AI INTAKE OCCUS), THIS S TUNS ON AND CUENT FLOS TO THE FUEL PUMP TO OPEATE IT. (0) STOP LIGHT S SIGNAL SSTEM THE STOP LIGHT S IS USED TO DETECT HETHE O NOT THE VEHICLE IS AKING AND THE INFOMATION IS INPUT AS A CONTOL SIGNAL TO TEMINAL STP OF THE ECU. () STA SIGNAL SSTEM TO CONFIM THAT THE E/G IS CANKING, THE VOLTAGE APPLIED TO THE STATE MOTO DUING CANKING IS DETECTED AND IS INPUT AS A CONTOL SIGNAL TO TEMINAL STA OF THE ECU. () 4D SIGNAL SSTEM HETHE O NOT THE VEHICLE IS OPEATING IN 4D MODE IS DETEMIND, AND A CONTOL SIGNAL IS INPUT TO TEMINAL 4D OF THE ECU.. CONTOL SSTEM * EFI (ELECTONIC FUEL INJECTION) SSTEM THE EFI SSTEM MONITOS THE ENGINE EVOLUTIONS THOUGH THE SIGNALS EACH SENSO (INPUT SIGNALS () TO ()) INPUTS TO THE ECU. ASED ON THIS DATA AND THE POGAM MEMOIZED IN THE ECU, THE MOST APPOPIATE FUEL INJECTION TIMING IS DECIDED AND CUENT IS OUTPUT TO TEMINAL #0 AND #0 OF THE ECU, CAUSING THE INJECTOS TO OPEATE IT (TO INJECT FUEL). IT IS THIS SSTEM HICH, THOUGH THE OK OF THE ECU, FINEL CONTOLS FUEL INJECTION IN ESPONSE TO DIVING CONDITIONS. * ESA (ELECTONIC SPAK ADVANCE) SSTEM THE ESA SSTEM MONITOS THE ENGINE EVOLUTIONS USING THE SIGNALS (INPUT SIGNALS (, 4, 5 TO 7, 9,, )) INPUT TO THE ECU FOM EACH SENSO. ASED ON THIS DATA AND THE POGAM MEMOIZED IN THE ECU, THE MOST APPOPIATE IGNITION TIMING IS DECIDED AND CUENT IS OUTPUT TO TEMINAL IGT OF THE ECU. THIS OUTPUT CONTOLS THE IGNITE TO PODUCE THE MOST APPOPIATE IGNITION TIMING FO THE DIVING CONDITIONS. 48
* FUEL PESSUE CONTOL SSTEM THE FUEL PESSUE UP SSTEM CAUSES THE VSV (FO FUEL PESSUE UP) TO COME ON FO HIGH TEMP. STATS AND IMMEDIATEL AFTE STATING IN ODE TO INCEASE THE FUEL PESSUE, IMPOVE STATAILIT AT HIGH TEMPEATUES AND POVIDE STALE IDLING. THE ECU EVALUATES THE INPUT SIGNALS FOM EACH SENSO (,, AND 4). OUTPUTS CUENT TO TEMINAL FPU AND CONTOLS THE VSV. * OX SENSO HEATE CONTOL SSTEM THE OX SENSO HEATE CONTOL SSTEM TUNS THE HEATE TO ON HEN THE INTAKE AI VOLUME IS LO (TEMP. OF EXHAUST EMISSIONS LO), AND AMS UP THE OX SENSO TO IMPOVE DETECTION PEFOMANCE OF THE SENSO. THE ECU EVALUATES THE SIGNALS FOM EACH SENSO (INPUT SIGNALS (, 4, 8, 9, )), CUENT IS OUTPUT TO TEMINAL HT AND CONTOLS THE HEATE. * AI (AI INJECTION) CONTOL SSTEM THE AI CONTOL SSTEM TUNS ON THE VSV (FO AI) IN ACCODANCE ITH THE ENGINE COOLANT TEMPEATUE AND THE DIVING CONDITIONS IN ODE TO EDUCE HC AND CO EMISSIONS. * EG CUT CONTOL SSTEM THE EG CUT CONTOL SSTEM CONTOLS THE VSV (FO EG) EVALUATING THE SIGNALS FOM EACH SENSO INPUT TO THE ECU (INPUT SIGNALS (, 9)) AND SENDING OUTPUT TO TEMINAL EG OF THE ECU.. DIAGNOSIS SSTEM ITH THE DIAGNOSIS SSTEM, HEN THEE IS A MALFUNCTION IN THE ECU SIGNAL SSTEM, THE MALFUNCTIONING SSTEM IS ECODED IN THE MEMO. THE MALFUNCTIONING SSTEM CAN THEN E FOUND EADING THE DISPLA (CODE) OF THE CHECK ENGINE ANING LIGHT. 4. FAIL SAFE SSTEM HEN A MALFUNCTION OCCUS IN AN SSTEM, IF THEE IS A POSSIILIT OF ENGINE TOULE EING CAUSED CONTINUED CONTOL ASED ON THE SIGNALS FOM THAT SSTEM. THE FAIL SAFE SSTEM EITHE CONTOLS THE SSTEM USING DATA (STANDAD VALUES) ECODED IN THE ECU MEMO O ELSE STOPS THE ENGINE. 49
9 AM ST 0 AM I0 IGNITION S IG 4 I7 I7 7. 5A IGN EA EA IH L 4 E 4 4 L FOM POE SOUCE SSTEM (SEE PAGE 40) 0A GAUGE 0A STOP F FUSE LOCK L 50A AM FOM POE SOUCE SSTEM (SEE PAGE 40) 5A EFI I4 INJECTO NO. I5 INJECTO NO. I6 INJECTO NO. I7 INJECTO NO. 4 I8 INJECTO NO. 5 I9 INJECTO NO. 6 EFI MAIN ELA A E FL AM. 5 FL AM 0. P F8 A,F9 FUSILE LINK ATTE E 50
I4 E TO NOISE FILTE I I IGNITION COIL TO TACHOMETE [COM. METE] L 5 C S 9 N CHECK ENGINE STOP LIGHT NOISE FILTE [COM. METE] S (FO STOP 7 LIGHT) G I6 G I7 4 5 + IG CI D I DISTIUTO IGNITE IGF IGT NE G G 0 IH IH 7 IH L G G E LG 9 IH IH LG LG LG LG 6 C 8 C 5 C C A A 4 A 8 A 7 A C 7 C 5 A A A C 0 C C 4 9 P 6 IH 0 IH 7 9 5 IG 5 IH G G MEL IGS STP ATT+ IGF IGT NE G G E4 A,E5, C ENGINE ECU + + # 0 # 0 TS SPD A/C 4D THG TH E C SPEED SENSO [COM. METE] E EG GAS TEMP. SENSO (FO CALIFONIA) E SHOT PIN (EX. FO CALIFONIA) E EFI ATE TEMP. SENSO ATE TEMP. S (FO FUEL PESSUE CONTOL) FOM A/C CUT ELA FOM 4D INDICATO [COM. METE] ID 5
IH I E0 E0 E0 V VSV (FO AI INJECTO SSTEM) V VSV (FO EG CONTOL SSTEM) V VSV (FO FUEL PESSUE CONTOL SSTEM) 5 6 4 O5 OXGEN SENSO (SU) I ISC VALVE + OX O4 + OX OXGEN SENSO HT E (MAIN) HT E 4 G 4 IH IH G L L L L O A 6 A 5 A 7 A 9 A 8 A 0 A A 4 A AI EG FPU ISC4 ISC ISC ISC HT HT E4 A,E5, C ENGINE ECU IDL VTA STJ VS VC THA EO EO E E T VF 0 A A 6 A 6 4 A 5 8 7 VF L G G L L FOM COLD STAT INJECTO TO STAT INJECTO TIME S G L I7 L G 4 E IDL VTA VC G G 5 6 4 7 E VTA VC THA I7 6 9 0 4 TE VF VF E OX C CHECK CONNECTO FP IG + OX 8 8 T THOTTLE POSITION SENSO A4 AI FLO METE EC EC 5
4 IH I7 0 IH E7 6 5 OX OX E4 A,E5 C ENGINE ECU STA NS I7 5 IH P N TO COLD STAT INJECTO E7 5 E7 IH A 5 A 4 6 I 8 IH 4 ID N NEUTAL STAT S C8 CICUIT OPENING ELA TO STAT INJECTO TIME S TO STATE O F8 FUEL PUMP M 6 9 IH 5 O F ID 5
SEVICE HINT E 4, E 5, E 6 ENGINE ECU VOLTAGE AT ECU CONNECTOS ATT E (E) : 0.0 4.0 VOLTS + E (E) : 0.0 4.0 VOLTS (IGNITION S ON) + E (E) : 0.0 4.0 VOLTS (IGNITION S ON) IGS E (E) : 0.0 4.0 VOLTS (IGNITION S ON) MEL E (E) : 0.0 4.0 VOLTS (IGNITION S ON) IDL E : 4.0 6.0 VOLTS (IGNITION S ON AND THOTTLE VALVE OPEN) VTA E : 0..0 VOLTS (IGNITION S ON AND THOTTLE VALVE FULL CLOSED) 4.0 5.0 VOLTS (IGNITION S ON AND THOTTLE VALVE OPEN) VC E : 4.0 6.0 VOLTS (IGNITIO S ON) VS E : 4.0 5.0 VOLTS (IGNITION S ON AND MEASUING PLATE FULL CLOSED) 0.0 0.08 VOLTS (IGNITION S ON AND MEASUING PLATE FULL OPEN).0 4.0 VOLTS (IDLING) 0..0 VOLTS (000 PM) THA E :.0.0 VOLTS (IGNITION S ON AND INTAKE AI TEMP. 0 C (68 F)) TH E : 0..0 VOLTS (IGNITION S ON AND COOLANT TEMP. 80 C (76 F)) STA E (E) : 6.0 4.0 VOLTS (CANKING) #0, #0, E0, E0 : 0.0 4.0 VOLTS (IGNITION S ON) IGT E (E) : 0.7.0 VOLTS (CANKING O IDLING) T E (E) : 4.0 6.0 VOLTS ITH IGNITION S ON AND CHECK CONNECTO TE E NOT CONNECT 0 VOLTS ITH IGNITION S ON AND CHECK CONNECTO TE E CONNECT A/C E (E) : 0.0 4.0 VOLTS ITH IGNITION S ON AND A/C SITCH ON ISC, ISC, ISC, ISC4 E (E) : 0.0 4.0 VOLTS (IGNITION S ON) E (E) : 0.0 4.0 VOLTS (NO TOULE (CHECK ENGINE ANING LIGHT OFF) AND ENGINE UNNING) NS E (E) : 0 VOLTS (IGNITION S ON AND SHIFT POSITION P O N ANGE) 0.0 4.0 VOLTS (IGNITION S ON AND EX. SHIFT POSITION P O N ANGE) 4D E (E) : 0.0 4.0 VOLTS (IGNITION S ON AND CENTE DIFF LOCK S ON) 0 VOLTS (IGNITION S ON AND CENTE DIFF LOCK S OFF) STP E (E) : 0.0 4.0 VOLTS (IGNITION S ON AND STOP LIGHT S ON) 0 VOLTS (IGNITION S ON AND STOP LIGHT S OFF) ESISTANCE AT ECU CONNECTOS (DISCONNECT IING CONNECTO FOM ECU) IDL E : INFINIT ( THOTTLE VALVE OPEN) LESS THAN. K ( THOTTLE VALVE FULL CLOSED) VTA E :.5 0. K ( THOTTLE VALVE OPEN) 0. 6. K ( THOTTLE VALVE FULL CLOSED) VC E : 4.5 8.5 K ( AI FLO METE CONNECTO DISCONNECTED) 0. 0.4 K (THOTTLE POSITION SENSO CONNECTO DISCONNECTED) VS E : 0.0 0.6 K MEASUING PLATE FULL CLOSED) 0..0 K MEASUING PLATE FULL OPEN) THA E :.0.0 K ( INTAKE AI TEMP. 0 C (68 F)) TH E : 0. 0.4 K ( COOLANT TEMP. 80 C (76 F)) G, NE G :0.4 0.8 K ISC, ISC, ISC, ISC4 +: 0 0 54
: PATS LOCATION CODE SEE PAGE CODE SEE PAGE CODE SEE PAGE A 4 9 F 9 9 I0 0 C 9 F 0 N 9 C 8 0 F8 N 0 C 0 I 9 O 4 9 C 0 I 9 O 5 9 D 9 I 9 S 9 0 E 9 I 4 9 T 9 E 9 I 5 9 V 9 E 4 A 0 I 6 9 V 9 E 5 0 I 7 9 V 9 E 6 C 0 I 8 9 9 F 8 A 9 I 9 9 : ELA LOCKS CODE SEE PAGE ELA LOCKS (ELA LOCK LOCATION) 6 / NO. (FONT SIDE OF LEFT FENDE) : CONNECTO JOINING IE HANESS AND IE HANESS CODE SEE PAGE JOINING IE HANESS AND IE HANESS (CONNECTO LOCATION) EA COL IE AND ENGINE OOM MAIN IE (LEFT FENDE) E ENGINE OOM MAIN IE AND ENGINE IE (NEA THE / NO. ) ID 4 COL IE AND FLOO NO. IE (LEFT KICK PANEL) IG 4 COL IE AND A/C SU IE (EHIND GLOVE OX) IH IH 4 ENGINE IE AND COL IE (EHIND GLOVE OX) O 6 FLOO NO. IE AND LUGGAGE OOM NO. IE (ESIDE THE FUEL TANK) : GOUND POINTS CODE SEE PAGE GOUND POINTS LOCATION E FONT SIDE OF LEFT FENDE EC AI INTAKE CHAME ID 4 LEFT KICK PANEL F 6 UNDE THE CENTE CONSOLE OX : SPLICE POINTS CODE SEE PAGE IE HANESS ITH SPLICE POINTS CODE SEE PAGE IE HANESS ITH SPLICE POINTS E 6 I 7 E 7 I E 8 ENGINE IE I 4 COL IE E 9 I E0 I4 E I7 4 ENGINE IE COL IE I 6 4 55
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