ENGINE CONTROL (JZ GE) SSTEM OUTLINE THE ENGINE CONTROL SSTEM UTILIZES MICROCOMPUTER ND MINTINS OVERLL CONTROL OF THE ENGINE, TRNSMISSION ETC. N OUTLINE OF THE ENGINE CONTROL IS GIVEN HERE.. INPUT SIGNLS () ENGINE COOLNT TEMP. SIGNL CIRCUIT THE ENGINE COOLNT TEMP. SENSOR DETECTS THE ENGINE COOLNT TEMP. ND HS UILT IN THERMISTOR ITH RESISTNCE, HICH VRIES CCORDING TO THE ENGINE COOLNT TEMP. HICH IS INPUT INTO TERMINL TH OF THE ENGINE CONTROL MODULE S CONTROL SIGNL. () INTKE IR TEMP. SIGNL CIRCUIT THE INTKE IR TEMP. SENSOR IS INSTLLED IN THE MSS IR FLO METER ND DETECTS THE INTKE IR TEMP. HICH IS INPUT S CONTROL SIGNL TO TERMINL TH OF THE ENGINE CONTROL MODULE. () OGEN DENSIT SIGNL CIRCUIT THE OGEN DENSIT IN THE EHUST EMISSION IS DETECTED THE HETED OGEN SENSOR FRONT ND RER SIDE ND INPUT S CONTROL SIGNL TO TERMINL O, O OF THE ENGINE CONTROL MODULE. () RPM SIGNL CIRCUIT CRNKSHFT POSITION IS DETECTED THE PICK UP COIL INSTLLED INSIDE THE DISTRIUTOR. CRNKSHFT POSITION IS INPUT S CONTROL SIGNL TO TERMINLS G ND G OF THE ENGINE CONTROL MODULE, ND ENGINE SPEED IS INPUT TO TERMINL NE. () THROTTLE POSITION SIGNL CIRCUIT THE THROTTLE POSITION SENSOR DETECTS THE THROTTLE VLVE OPENING NGLE S CONTROL SIGNL, HICH IS INPUT INTO TERMINL VT OF THE ENGINE CONTROL MODULE. HEN THE VLVE IS COMPLETEL CLOSED, THE CONTROL SIGNL IS INPUT INTO TERMINL IDL. (6) VEHICLE SPEED CIRCUIT THE VEHICLE SPEED IS DETECTED VEHICLE SPEED SENSOR NO. INSTLLED IN THE TRNSMISSION ND THE SIGNL IS INPUT TO TERMINL SP OF THE ENGINE CONTROL MODULE VI THE COMINTION METER. (7) NEUTRL POSITION SIGNL CIRCUIT THE PRK/NEUTRL POSITION S DETECTS HETHER THE SHIFT POSITION IS IN N ND P OR NOT, ND THE SIGNL IS INPUT INTO TERMINL NS OF THE ENGINE CONTROL MODULE. (8) /C S SIGNL CIRCUIT THE OPERTING VOLTGE OF THE /C MGNETIC CLUTCH IS DETECTED ND THE SIGNL IS INPUT INTO TERMINL CMG OF ENGINE CONTROL MODULE S CONTROL SIGNL. (9) TTER SIGNL CIRCUIT VOLTGE IS CONSTNTL PPLIED TO TERMINL TT OF THE ENGINE CONTROL MODULE. ITH THE IGNITION S TURNED ON, THE VOLTGE FOR ENGINE CONTROL MODULE STRT UP POER SUPPL IS PPLIED TO TERMINL + OF THE ENGINE CONTROL MODULE VI EFI MIN REL. THE CURRENT FLOING THROUGH THE IGN FUSE FLOS TO TERMINL IGS OF THE ENGINE CONTROL MODULE. (0) INTKE IR VOLUME SIGNL CIRCUIT INTKE IR VOLUME IS DETECTED THE MSS IR FLO METER ND THE SIGNL IS INPUT TO TERMINL VG OF THE ENGINE CONTROL MODULE S CONTROL SIGNL. () STOP LIGHT S SIGNL CIRCUIT THE STOP LIGHT S IS USED TO DETECT HETHER THE VEHICLE KING OR NOT ND THE SIGNL IS INPUT INTO TERMINL STP OF THE ENGINE CONTROL MODULE S CONTROL SIGNL. () STRTER SIGNL CIRCUIT TO CONFIRM HETHER THE ENGINE IS CRNKING, THE VOLTGE IS PPLIED TO THE STRTER MOTOR DURING CRNKING IS DETECTED ND THE SIGNL IS INPUT INTO TERMINL ST OF THE ENGINE CONTROL MODULE S CONTROL SIGNL. () ENGINE KNOCK SIGNL CIRCUIT ENGINE KNOCKING IS DETECTED KNOCK SENSOR FRONT ND RER SIDE ND THE SIGNL IS INPUT TERMINLS KNK ND KNK S CONTROL SIGNL. 8
. CONTROL SSTEM SEQUENTIL MULTIPORT FUEL INJECTION SSTEM THE SEQUENTIL MULTIPORT FUEL INJECTION SSTEM MONITORS THE ENGINE CONDITION THROUGH THE SIGNLS INPUT FROM ECH SENSOR (INPUT SIGNLS FROM () TO () ETC.) TO THE ENGINE CONTROL MODULE. THE EST FUEL INJECTION TIMING IS DECIDED SED ON THIS DT ND THE PROGRM MEMORIZED THE ENGINE CONTROL MODULE, ND THE CONTROL SIGNL IS OUTPUT TO TERMINLS #0, #0, #0, #0, #0 ND #60 OF THE ENGINE CONTROL MODULE TO OPERTE THE INJECTOR (INJECT THE FUEL). THE SEQUENTIL MULTIPORT FUEL INJECTION SSTEM PRODUCES CONTROLS OF FUEL INJECTION OPERTION THE ENGINE CONTROL MODULE IN RESPONSE TO THE DRIVING CONDITIONS. ES SSTEM THE ES SSTEM MONITORS THE ENGINE CONDITION THROUGH THE SIGNLS INPUT TO THE ENGINE CONTROL MODULE FROM ECH SENSOR (INPUT SIGNLS FROM (), (), () TO () ETC.). THE EST IGNITION TIMING IS DECIDED CCORDING TO THIS DT ND THE MEMORIZED DT IN THE ENGINE CONTROL MODULE ND THE CONTROL SIGNL IS OUTPUT TO TERMINLS IGT. THIS SIGNL CONTROLS THE IGNITER TO PROVIDE THE EST IGNITION TIMING FOR THE DRIVING CONDITIONS. HETED OGEN SENSOR HETER CONTROL SSTEM THE MIN HETED OGEN SENSOR, SU HETED OGEN SENSOR HETER CONTROL SSTEM TURNS THE HETER ON HEN THE INTKE IR VOLUME IS LO (TEMP. OF EHUST EMISSIONS IS LO) ND RMS UP THE OGEN SENSOR TO IMPROVE DETECTION PERFORMNCE OF THE SENSOR. THE ENGINE CONTROL MODULE EVLUTES THE SIGNLS FROM ECH SENSOR (INPUT SIGNLS FROM (), (), (), (9) TO () ETC.), ND OUTPUTS CURRENT TO TERMINLS HT, HT, HTL TO CONTROL THE HETER IDLE IR CONTROL SSTEM THE IDLE IR CONTROL SSTEM (STEP MOTOR TPE) INCRESES THE ENGINE SPEED ND PROVIDES IDLING STILIT FOR FST IDLE UP HEN THE ENGINE IS COLD, ND HEN THE IDLE SPEED HS DROPPED DUE TO ELECTRICL LOD ND SO ON. THE ENGINE CONTROL MODULE EVLUTES THE SIGNLS FROM ECH SENSOR (INPUT SIGNLS FROM (), (), (), (8), (9), () ETC.), OUTPUTS CURRENT TO TERMINLS ISC, ISC, ND ISC TO CONTROL THE IDLE IR CONTROL VLVE. EGR CONTROL SSTEM THE EGR CONTROL SSTEM DETECTS THE SIGNL FROM ECH SENSOR (INPUT SIGNLS FROM (), (), (9), (0) ETC.), ND OUTPUTS CURRENT TO TERMINL EGR TO CONTROL THE EGR VLVE. FUEL PUMP CONTROL SSTEM THE ENGINE CONTROL MODULE OUTPUTS CURRENT TO TERMINL FPC ND CONTROLS THE FUEL PUMP ECU ND FUEL PUMP DRIVE SPEED IN RESPONSE TO THE DRIVING CONDITIONS. CIS (COUSTIC CONTROL INDUCTION SSTEM) CIS INCLUDES VLVE IN THE ULKHED SEPRTING THE SURGE TNK INTO TO PRTS. THIS VLVE IS OPENED ND CLOSED IN CCORDNCE ITH THE DRIVING CONDITIONS TO CONTROL THE INTKE MNIFOLD LENGTH IN TO STGES FOR INCRESED ENGINE OUTPUT IN LL RNGES FROM LO TO HIGH SPEEDS. THE ENGINE CONTROL MODULE JUDGES THE VEHICLE SPEED THE SIGNLS ((), ()) FROM ECH SENSOR ND OUTPUTS SIGNLS TO THE TERMINL CIS TO CONTROL THE VSV (CIS).. DIGNOSIS SSTEM ITH THE DIGNOSIS SSTEM, HEN THERE IS MLFUNCTION IN THE ENGINE CONTROL MODULE SIGNL SSTEM, THE MLFUNCTIONING SSTEM IS RECORDED IN THE MEMOR. THE MLFUNCTIONING SSTEM CN E FOUND REDING THE CODE DISPLED THE MLFUNCTION INDICTOR LMP.. FIL SFE SSTEM HEN MLFUNCTION HS OCCURRED IN N SSTEM, IF THERE IS POSSIILIT OF ENGINE TROULE EING CUSED CONTINUED CONTROL SED ON THE SIGNLS FROM THT SSTEM, THE FIL SFE SSTEM EITHER CONTROLS THE SSTEM USING DT (STNDRD VLUES) RECORDED IN THE ENGINE CONTROL MODULE MEMOR OR ELSE STOPS THE ENGINE. 8
ENGINE CONTROL (JZ GE) FROM POER SOURCE SSTEM (SEE PGE 6) 0 EFI NO. 7 M IG 6 ST 8 7. OD C I 0 M R R I9 IGNITION S C 9 CLUTCH STRT S 6 J K (M/T) I (M/T) IJ 7. ST (/T) IJ P PRK/NEUTRL POSITION S (/T) P N 6 I7 (/T) E0 I (/T) 0 IC E DI FPC 0 0 LT M V G (/T) E0 EFI MIN REL (M/T) (/T) F FUEL PUMP ECU E8 : M/T E6 : /T + FP TTER TO STRTER REL E I 8
I0 9 IJ E8 (/T) E 8 E (/T) O O 8 J E II 7. IGN I IGNITER 9 TO TCHOMETER [COM. METER] R II ET IGT FROM IGNITION COIL R C IGF + 76 M REL TT NS 7 8 IGS IGT IGF 6 P F FUEL PUMP E L M E FPC DI ST 77 V G IJ IJ V G IC IC + FPU 7 V 6 VSV (FUEL PRESSURE UP) L D7 DT LINK CONNECTOR T 8 G G 7 IJ 6 IJ SDL SDL SG E 9 6, E0 ENGINE CONTROL MODULE CG V G IC IJ E6 E6 I P EC IE IG 8
ENGINE CONTROL (JZ GE) E6 E6 I7 INJECTOR NO. 6 R E8 I INJECTOR NO. E8 E8 E8 E8 I INJECTOR NO. L I INJECTOR NO. R I6 INJECTOR NO. R I INJECTOR NO. R L + E VG EG TH R G M MSS IR FLO METER E ENGINE COOLNT TEMP. SENSOR L 9 8 7 6 0 # 60 # 0 #0 #0 # 0 # 0 66 8 6 VG EVG TH TH E EGR KNK KNK NE G G G 7 0 9 7 6 7 E 9, E0 ENGINE CONTROL MODULE P R G V VSV (EGR) K KNOCK SENSOR (ON FRONT SIDE) K KNOCK SENSOR (ON RER SIDE) NE G G G D DISTRIUTOR J JUNCTION CONNECTOR E 86
FROM POER SOURCE SSTEM (SEE PGE 6) E8 E8 (/T) 0 MIR HTR 0 PNEL STOP /T FLUID TEMP. SENSOR L 6 THO (/T) E EGR GS TEMP. SENSOR THG T THROTTLE POSITION SENSOR R 6 VC VT IDL H L R IF D 8 DIODE (IDLE UP) R R E 9, E0 ENGINE CONTROL MODULE ELS II 6 G O E 0 S STOP LIGHT S G G STP I IJ O 0 6 HT NE NE O HT O HT 8 7 7 7 R L O HT + E + E O HT M MIN HETED OGEN SENSOR (NK SENSOR ) E7 E8 E E G R L S6 SU HETED OGEN SENSOR (NK SENSOR ) O HT E + C CRNKSHFT POSITION SENSOR M MIN HETED OGEN SENSOR (NK SENSOR ) E6 ED 87
ENGINE CONTROL (JZ GE) E E E FROM /C MPLIFIER FROM /C MGNETIC CLUTCH REL II E TE PS E E0 EO EO SP 0 69 78 80 79 6 G P L L P I IDLE IR CONTROL VLVE 6 V VSV (CIS) V VSV (EVP) G G G R L G V C CMG 9 7 ISC ISC ISC ISC CIS EVP E 9, E0 ENGINE CONTROL MODULE D DT LINK CONNECTOR 8 TE E + P POER STEERING PRESSURE S E6 E8 I7 ED 88
FROM POER SOURCE SSTEM (SEE PGE 6) 0 GUGE E I : /T I 8 : M/T I I L P T MLFUNCTION INDICTOR LMP [TELLTLE LIGHT LH] L II II L T 6 TELLTLE LIGHT RH 7 9 6 P P ODO ND TRIP C0, C SPEEDOMETER [COM. METER] 0 R V0 VEHICLE SPEED SENSOR NO. (COMINTION METER) II II 8 II I R R I 8 IF 89
ENGINE CONTROL (JZ GE) SERVICE HINTS EFI MIN REL : CLOSED ITH THE IGNITION S T ON POSITION E ENGINE COOLNT TEMP. SENSOR :0 0 KΩ ( 0 C, F) 7 KΩ (0 C, F) KΩ (0 C, 68 F) 0.9. KΩ (0 C, 0 F) 0. 0.7 KΩ (60 C, 0 F) 0. 0. KΩ (80 C, 76 F) I IDLE IR CONTROL VLVE, : PPRO. 0 0 Ω, 6 : PPRO. 0 0 Ω I, I, I, I, I6, I7 INJECTOR : PPRO..8 Ω T THROTTLE POSITION SENSOR : PPRO. 9 KΩ :. 0.0 KΩ ITH THROTTLE VLVE FULL OPENED POSITION 0. 0.8 KΩ ITH CLERNCE ETEEN LEVER ND STOP SCRE 0 MM (0 IN.) :0. KΩ ITH CLERNCE ETEEN LEVER ND STOP SCRE 0. MM (0.077 IN.) INFINIT ITH CLERNCE ETEEN LEVER ND STOP SCRE 0. MM (0.06 IN.) E9 (), E0 () ENGINE CONTROL MODULE (VOLTGE T ENGINE CONTROL MODULE IRING CONNECTORS) TT E : LS 9 VOLTS IGS E : 9 VOLTS ITH THE IGNITION S ON M REL E:9 VOLTS ITH THE IGNITION S ON + E : 9 VOLTS ITH THE IGNITION S ON IDL E : 9 VOLTS ITH THE IGNITION S ON ND THE THROTTLE VLVE FULL OPEN 0. VOLTS ITH THE IGNITION S ON ND THE THROTTLE VLVE FULL CLOSED VT E : 0. 0.8 VOLTS ITH THE IGNITION S ON ND THE THROTTLE VLVE FULL CLOSED..9 VOLTS ITH THE IGNITION S ON ND THE THROTTLE VLVE OPEN TH E : 0.. VOLTS ITH THE IGNITION S ON ND THE INTKE IR TEMP. 0 C (68 F) TH E : 0..0 VOLTS ITH THE IGNITION S ON ND THE COOLNT TEMP. 80 C (76 F) ST E : 6 VOLTS ITH THE ENGINE CRNKING E : 9 VOLTS ITH ENGINE IDLING IGF E : PULSE GENERTION (ENGINE IDLING) NS E : 0 VOLTS ITH THE IGNITION S ON ND THE SHIFT LEVER P OR N POSITION 9 VOLTS ITH THE IGNITION S ON ND THE SHIFT LEVER ECEPT P OR N POSITION SP : PULSE GENERTION TE E : 9 VOLTS ITH THE IGNITION S ON /C E : 0. VOLTS ITH THE IGNITION S ON ND THE /C OFF 7. VOLTS ITH THE IGNITION S ON ND THE /C ON ELS E : 9 VOLTS ITH THE TILLIGHT ON, DEFOGGER ON 0. VOLTS ITH THE TILLIGHT OFF, DEFOGGER OFF STP E : 7. VOLTS ITH THE STOP LIGHT S ON (KE PEDL DEPRESSED) 0. VOLTS ITH THE STOP LIGHT S OFF ISC, ISC, ISC, ISC E : PULSE GENERTION (ENGINE IDLING) #0, #0, #0, #0, #0, #60 E0, E0 : PULSE GENERTION (ENGINE IDLING) (RESISTNCE OF ENGINE CONTROL MODULE IRING CONNECTORS) IDL E : INFINIT ITH THE THROTTLE VLVE OPEN 0. KΩ ITH THE THROTTLE VLVE FULL CLOSED VT E :. KΩ 0.0 KΩ ITH THE THROTTLE VLVE FULL OPEN 00 Ω 800 Ω ITH THE THROTTLE VLVE FULL CLOSED VC E : KΩ 9 KΩ TH E : KΩ KΩ ITH THE INTKE IR TEMP. 0 C (68 F) TH E : 00 Ω 00 Ω ITH THE COOLNT TEMP. 80 C (76 F) ISC, ISC, ISC, ISC + : 0 0 Ω #0, #0, #0, #0, #0, #60 + :.. Ω 90
: PRTS LOCTION CODE SEE PGE CODE SEE PGE CODE SEE PGE 6 (JZ GE) F 0 M 7 C 6 (JZ GE) I 7 (JZ GE) M 7 C9 8 I 7 P 7 (JZ GE) C0 8 I 7 (JZ GE) P 7 (JZ GE) C 8 I 7 (JZ GE) S 9 D 6 (JZ GE) I 7 (JZ GE) S6 9 D 6 I 7 (JZ GE) T 7 (JZ GE) D8 8 I6 7 (JZ GE) T 9 D7 8 I7 7 (JZ GE) T6 9 E 6 (JZ GE) I9 9 V 7 E 6 (JZ GE) J 9 V 7 (JZ GE) E9 9 K 7 (JZ GE) V 7 (JZ GE) E0 9 K 7 (JZ GE) V6 7 (JZ GE) F 0 M 7 V0 7 (JZ GE) : REL LOCKS CODE SEE PGE REL LOCKS (REL LOCK LOCTION) R/ NO. (ENGINE COMPRTMENT LEFT) : JUNCTION LOCK ND IRE HRNESS CONNECTOR CODE SEE PGE JUNCTION LOCK ND IRE HRNESS (CONNECTOR LOCTION) 0 ENGINE ROOM MIN IRE ND J/ NO. (LEFT KICK PNEL) C 0 FLOOR NO. IRE ND J/ NO. (LEFT KICK PNEL) E 0 INSTRUMENT PNEL IRE ND J/ NO. (LEFT KICK PNEL) H I J K 0 COL IRE ND J/ NO. (LEFT KICK PNEL) TTER ND J/ NO. (ENGINE COMPRTMENT LEFT) : CONNECTOR JOINING IRE HRNESS ND IRE HRNESS CODE SEE PGE JOINING IRE HRNESS ND IRE HRNESS (CONNECTOR LOCTION) E (JZ GTE) E ENGINE IRE ND ENGINE ROOM MIN IRE (NER THE R/ NO. ) I 6 ENGINE ROOM MIN IRE ND COL IRE (LEFT KICK PNEL) IC 6 FLOOR NO. IRE ND COL IRE (LEFT KICK PNEL) IF 6 INSTRUMENT PNEL IRE ND COL IRE (INSTRUMENT PNEL REINFORCEMENT LH) II 8 ENGINE IRE ND INSTRUMENT PNEL IRE (RIGHT KICK PNEL) IJ IJ 8 ENGINE IRE ND COL IRE (RIGHT KICK PNEL) P 0 FUEL GUGE IRE ND FLOOR NO. IRE (LUGGGE ROOM FRONT LH) : GROUND POINTS CODE SEE PGE GROUND POINTS LOCTION E (JZ GE) FRONT SIDE OF LEFT FENDER EC (JZ GE) RER SIDE OF INTKE MNIFOLD ED (JZ GE) RER SIDE OF INTKE MNIFOLD IE IF 6 LEFT KICK PNEL IG 6 RIGHT KICK PNEL I 0 LEFT QURTER PILLR : SPLICE POINTS CODE SEE PGE IRE HRNESS ITH SPLICE POINTS CODE SEE PGE IRE HRNESS ITH SPLICE POINTS E0 ENGINE ROOM MIN IRE I 8 COL IRE E I E I8 INSTRUMENT PNEL IRE 8 INSTRUMENT PNEL IRE E I ENGINE IRE E6 I7 8 ENGINE IRE E7 I0 8 COL IRE E8 9
ENGINE CONTROL (JZ GE) GR C DRK GR C 9 C0 LUE 9 0 C D LCK D LCK 8 D 8 ORNGE D7 E DRK GR E GREEN 6 E 9 DRK GR E0 DRK GR 7 6 7 8 9 6 7 8 9 0 7 8 6 6 66 69 7 7 7 7 7 76 77 78 79 80 6 7 8 9 0 6 8 0 0 6 F DRK GR F LCK I LCK I LCK I, I, I6 DRK GR 6 I, I, I7 ON I9 J K, K DRK GR M LCK 6 7 8 (HINT : SEE PGE 7) 9
M DRK GR M DRK GR P GR P DRK GR S LUE 6 S6 DRK GR T LCK T T 6 6 7 V ON V LCK V LUE V 6 LUE V0 LCK 9