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Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) → FuelTech FT450 (auto)

Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) — FuelTech — FT450
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11

Before you start

Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.

Statusdraft · not yet verified: nobody has reported building and running this harness
Open errors6: read the Findings page before cutting any wire
Size of the job38 wires · 10 connectors · 0 part lines
ToolsCrimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Order of work1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up.

Build checklist

Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.

WireFromToGaugeColourCutLabelCrimp ACrimp BPin APin BContinuity
W1OEM-B78-16SP-14V-10.85☐☐☐☐☐☐☐
W2OEM-B78-7SP-14V-10.85☐☐☐☐☐☐☐
W3OEM-B78-8SP-14V-10.85☐☐☐☐☐☐☐
W4SP-14V-1FT450-A-A130.85☐☐☐☐☐☐☐
W5OEM-B74-21SP-GND-10.85☐☐☐☐☐☐☐
W6OEM-B74-31SP-GND-10.85☐☐☐☐☐☐☐
W7OEM-B74-9SP-GND-10.85☐☐☐☐☐☐☐
W8OEM-B75-17SP-GND-10.85☐☐☐☐☐☐☐
W9SP-GND-1FT450-A-A70.85☐☐☐☐☐☐☐
W10OEM-B74-22SP-0V-10.5☐☐☐☐☐☐☐
W11OEM-B75-18SP-0V-10.5☐☐☐☐☐☐☐
W12OEM-B75-19SP-0V-10.5☐☐☐☐☐☐☐
W13OEM-B78-22SP-0V-10.5☐☐☐☐☐☐☐
W14SP-0V-1FT450-A-A120.5☐☐☐☐☐☐☐
W15OEM-B75-2FT450-A-A140.5☐☐☐☐☐☐☐
W16OEM-B74-23FT450-A-A180.5☐☐☐☐☐☐☐
W17SP-0V-1FT450-A-A180.5☐☐☐☐☐☐☐
W18OEM-B74-10FT450-A-A170.5☐☐☐☐☐☐☐
W19OEM-B74-11FT450-A-A80.5☐☐☐☐☐☐☐
W20OEM-B74-12FT450-A-A90.5☐☐☐☐☐☐☐
W21OEM-B74-13FT450-A-A100.5☐☐☐☐☐☐☐
W22OEM-B75-5FT450-A-A10.5☐☐☐☐☐☐☐
W23OEM-B75-6FT450-A-A20.5☐☐☐☐☐☐☐
W24OEM-B74-1FT450-A-A10.5☐☐☐☐☐☐☐
W25OEM-B74-2FT450-A-A20.5☐☐☐☐☐☐☐
W26OEM-B74-3FT450-A-A10.5☐☐☐☐☐☐☐
W27OEM-B74-4FT450-A-A20.5☐☐☐☐☐☐☐
W28OEM-B74-17FT450-A-A30.5☐☐☐☐☐☐☐
W29OEM-B74-18FT450-A-A40.5☐☐☐☐☐☐☐
W30OEM-B74-19FT450-A-A50.5☐☐☐☐☐☐☐
W31OEM-B74-20FT450-A-A60.5☐☐☐☐☐☐☐
W32OEM-B75-9FT450-A-A230.5☐☐☐☐☐☐☐
W33OEM-B75-15FT450-A-A200.5☐☐☐☐☐☐☐
W34OEM-B75-23FT450-A-A210.5☐☐☐☐☐☐☐
W35OEM-B75-16FT450-A-A220.5☐☐☐☐☐☐☐
W36OEM-B75-24FT450-A-A250.5☐☐☐☐☐☐☐
W37OEM-B75-14FT450-A-A240.5☐☐☐☐☐☐☐
W38OEM-B75-22FT450-A-A260.5☐☐☐☐☐☐☐

Bench test (before first power-up)

Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).

#Probe AProbe BExpectWhyReading
1FT450-A-A12FT450-A-A13open (OL)sensor ground must not touch +12 V supply
2FT450-A-A12FT450-A-A14open (OL)sensor ground must not touch 5 V sensor reference
3FT450-A-A14FT450-A-A13open (OL)5 V sensor reference must not touch +12 V supply
4FT450-A-A7FT450-A-A13open (OL)power ground must not touch +12 V supply
5FT450-A-A7FT450-A-A14open (OL)power ground must not touch 5 V sensor reference

If any reading doesn't match, stop and get help before powering up.

Revisions

RevLabelByDate
No revisions yet.

Schematic

FT450-AOEM-B74OEM-B75OEM-B76OEM-B77OEM-B78OEM-B79SP-0VSP-14VSP-GND

Connectors

FT450-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
A1Injector 1 (Bank A)—W22—0.5OEM-B75-5———
A1Injector 1 (Bank A)—W24—0.5OEM-B74-1———
A1Injector 1 (Bank A)—W26—0.5OEM-B74-3———
A10Ignition 3—W21—0.5OEM-B74-13———
A11Ignition 4————————
A12Signal ground—W14—0.5SP-0V-1———
A13+12V switched—W4—0.85SP-14V-1———
A14+5V sensor supply—W15—0.5OEM-B75-2———
A15CAN A LOW————————
A16CAN A HIGH————————
A17Phase input (cam)—W18—0.5OEM-B74-10———
A18RPM reference (crank -)—W16—0.5OEM-B74-23———
A18RPM reference (crank -)—W17—0.5SP-0V-1———
A19RPM signal (crank +)————————
A2Injector 2 (Bank A)—W23—0.5OEM-B75-6———
A2Injector 2 (Bank A)—W25—0.5OEM-B74-2———
A2Injector 2 (Bank A)—W27—0.5OEM-B74-4———
A20White input 1—W33—0.5OEM-B75-15———
A21White input 2—W34—0.5OEM-B75-23———
A22White input 3 (TPS)—W35—0.5OEM-B75-16———
A23White input 4 (oil pressure)—W32—0.5OEM-B75-9———
A24White input 5 (water temp)—W37—0.5OEM-B75-14———
A25White input 6 (fuel pressure)—W36—0.5OEM-B75-24———
A26White input 7 (air temp)—W38—0.5OEM-B75-22———
A3Aux 1—W28—0.5OEM-B74-17———
A4Aux 2—W29—0.5OEM-B74-18———
A5Aux 3—W30—0.5OEM-B74-19———
A6Aux 4 (fuel pump / relays)—W31—0.5OEM-B74-20———
A7Power ground—W9—0.85SP-GND-1———
A8Ignition 1—W19—0.5OEM-B74-11———
A9Ignition 2—W20—0.5OEM-B74-12———

OEM-B74

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Injector 3 (#30)—W24—0.5FT450-A-A1———
10Cam position (G2)—W18—0.5FT450-A-A17———
11Ignition 1 (IGT, cyl 1&6)—W19—0.5FT450-A-A8———
12Ignition 2 (IGT2, cyl 5&2)—W20—0.5FT450-A-A9———
13Ignition 3 (IGT3, cyl 3&4)—W21—0.5FT450-A-A10———
15Wastegate VSV (PMC)————————
17VVT-i OCV - (OCV-)—W28—0.5FT450-A-A3———
18VVT-i OCV + (OCV+)—W29—0.5FT450-A-A4———
19ETCS-i clutch - (CL-)—W30—0.5FT450-A-A5———
2Injector 4 (#40)—W25—0.5FT450-A-A2———
20ETCS-i clutch + (CL+)—W31—0.5FT450-A-A6———
21Power ground (E01)—W5—0.85SP-GND-1———
22Crank/cam sensor return (NE-)—W10—0.5SP-0V-1———
23Crank position (NE+)—W16—0.5FT450-A-A18———
24Neutral/park switch (NSW)————————
25Igniter verification (IGF)————————
27Knock sensor 2 (KNK2, rear)————————
28Knock sensor 1 (KNK1, front)————————
3Injector 5 (#50)—W26—0.5FT450-A-A1———
30ETCS-i motor shield (GEO1)————————
31Power ground (E02)—W6—0.85SP-GND-1———
4Injector 6 (#60)—W27—0.5FT450-A-A2———
5Intake air bypass VSV (VSV1)————————
7ETCS-i motor - (M-)————————
8ETCS-i motor + (M+)————————
9ETCS-i ground (ME01)—W7—0.85SP-GND-1———

OEM-B75

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
10Mass air flow (VG)————————
12O2 sensor (OX)————————
14Coolant temperature (THW)—W37—0.5FT450-A-A24———
15Accelerator pedal 1 (VPA)—W33—0.5FT450-A-A20———
16Accelerator pedal 2 (VPA2)—W35—0.5FT450-A-A22———
17Power ground (E1)—W8—0.85SP-GND-1———
18Sensor ground (E2)—W11—0.5SP-0V-1———
19MAF ground (EVG)—W12—0.5SP-0V-1———
2Sensor power (VC)—W15—0.5FT450-A-A14———
20A/T 2nd-gear indicator (2)————————
21A/T 1st-gear indicator (L)————————
22Intake air temperature (THA)—W38—0.5FT450-A-A26———
23Throttle position 1 (VTA)—W34—0.5FT450-A-A21———
24Throttle position 2 (VTA2)—W36—0.5FT450-A-A25———
3Exhaust gas control VSV (VSV2)————————
4O2 sensor heater (HT)————————
5Injector 1 (#10)—W22—0.5FT450-A-A1———
6Injector 2 (#20)—W23—0.5FT450-A-A2———
7EVAP purge VSV (PRG)————————
8Main oil pressure switch (MOPS)————————
9Manifold pressure (PIM)—W32—0.5FT450-A-A23———

OEM-B76

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1A/T shift solenoid 1 (S1)————————
10OD direct-clutch speed (NCO-)————————
11No.2 speed sensor return (SP2-)————————
12Exhaust bypass VSV (VSV3)————————
13A/T lock-up solenoid - (SLU-)————————
14A/T accumulator solenoid - (SLN-)————————
15A/T line-pressure solenoid - (SLT-)————————
16Fuel pressure-up VSV (FPU)————————
17A/T oil temperature (OIL)————————
2A/T shift solenoid 2 (S2)————————
3A/T shift solenoid 3 (S3)————————
4OD direct-clutch speed (NCO+)————————
5No.2 speed sensor (SP2+)————————
6A/T shift solenoid 4 (S4)————————
7A/T lock-up solenoid + (SLU+)————————
8A/T accumulator solenoid + (SLN+)————————
9A/T line-pressure solenoid + (SLT+)————————

OEM-B77

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1A/C request (AC)————————
13A/C clutch relay (ACMG)————————
14A/T shift down (SFTD)————————
16A/T reverse indicator (R)————————
18Rear right wheel speed (RRO)————————
19Rear left wheel speed (RLO)————————
2Starter signal (STA)————————
20Tachometer output (TACH)————————
21ABS active (ABS)————————
25No.1 speed sensor (SPD)————————
26Electrical load sense (ELS)————————
27Road speed (RSPD)————————
4A/T shift up (SFTU)————————
5Diagnostic/timing check (TC)————————
6Stop light switch (STP)————————
7A/T manual position (3)————————

OEM-B78

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Battery constant (BATT)————————
10EFI main relay control (M-REL)————————
11Serial diagnostic (SIL)————————
16EFI main relay power (+B)—W1—0.85SP-14V-1———
2TRAC snow-mode light (SNOW)————————
22Switch ground (EC)—W13—0.5SP-0V-1———
3TRAC snow-mode switch (SNWI)————————
4Fuel pump diagnostic (DI)————————
5Fuel pump control (FPC)————————
6Check-engine light (W)————————
7ETCS-i power (+BM)—W2—0.85SP-14V-1———
8EFI main relay power (+B2)—W3—0.85SP-14V-1———
9Ignition switch (IGSW)————————

OEM-B79

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1TRAC enable light (IND)————————
14TRAC active light (CIND)————————
17A/T meter LCD (LPO3)————————
18A/T meter LCD (SPTL)————————
19Reverse buzzer (BZ)————————
2TRAC off switch (MSW)————————
3A/T meter LCD (LPO1)————————
4A/T meter LCD (LPO2)————————
7Front right wheel speed (FRO)————————
8Front left wheel speed (FLO)————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W10—0.5OEM-B74-22———
1——W11—0.5OEM-B75-18———
1——W12—0.5OEM-B75-19———
1——W13—0.5OEM-B78-22———
1——W14—0.5FT450-A-A12———
1——W17—0.5FT450-A-A18———

SP-14V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-B78-16———
1——W2—0.85OEM-B78-7———
1——W3—0.85OEM-B78-8———
1——W4—0.85FT450-A-A13———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W5—0.85OEM-B74-21———
1——W6—0.85OEM-B74-31———
1——W7—0.85OEM-B74-9———
1——W8—0.85OEM-B75-17———
1——W9—0.85FT450-A-A7———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-B74-1Injector 3 (#30)injector_outFT450-A-A1Injector 1 (Bank A)injector_outsingle_source
OEM-B74-10Cam position (G2)trigger_inFT450-A-A17Phase input (cam)trigger_insingle_source
OEM-B74-11Ignition 1 (IGT, cyl 1&6)ignition_outFT450-A-A8Ignition 1ignition_outsingle_source
OEM-B74-12Ignition 2 (IGT2, cyl 5&2)ignition_outFT450-A-A9Ignition 2ignition_outsingle_source
OEM-B74-13Ignition 3 (IGT3, cyl 3&4)ignition_outFT450-A-A10Ignition 3ignition_outsingle_source
OEM-B74-15Wastegate VSV (PMC)low_side_out———single_source
OEM-B74-17VVT-i OCV - (OCV-)low_side_outFT450-A-A3Aux 1low_side_outsingle_source
OEM-B74-18VVT-i OCV + (OCV+)low_side_outFT450-A-A4Aux 2low_side_outsingle_source
OEM-B74-19ETCS-i clutch - (CL-)low_side_outFT450-A-A5Aux 3low_side_outsingle_source
OEM-B74-2Injector 4 (#40)injector_outFT450-A-A2Injector 2 (Bank A)injector_outsingle_source
OEM-B74-20ETCS-i clutch + (CL+)low_side_outFT450-A-A6Aux 4 (fuel pump / relays)low_side_outsingle_source
OEM-B74-21Power ground (E01)groundFT450-A-A7Power groundgroundsingle_source
OEM-B74-22Crank/cam sensor return (NE-)sensor_groundFT450-A-A12 + FT450-A-A18Signal ground + RPM reference (crank -)sensor_ground + trigger_insingle_source
OEM-B74-23Crank position (NE+)trigger_inFT450-A-A12 + FT450-A-A18Signal ground + RPM reference (crank -)sensor_ground + trigger_insingle_source
OEM-B74-24Neutral/park switch (NSW)digital_in———single_source
OEM-B74-25Igniter verification (IGF)digital_in———single_source
OEM-B74-27Knock sensor 2 (KNK2, rear)knock_in———single_source
OEM-B74-28Knock sensor 1 (KNK1, front)knock_in———single_source
OEM-B74-3Injector 5 (#50)injector_outFT450-A-A1Injector 1 (Bank A)injector_outsingle_source
OEM-B74-30ETCS-i motor shield (GEO1)shield———single_source
OEM-B74-31Power ground (E02)groundFT450-A-A7Power groundgroundsingle_source
OEM-B74-4Injector 6 (#60)injector_outFT450-A-A2Injector 2 (Bank A)injector_outsingle_source
OEM-B74-5Intake air bypass VSV (VSV1)low_side_out———single_source
OEM-B74-7ETCS-i motor - (M-)hbridge_out———single_source
OEM-B74-8ETCS-i motor + (M+)hbridge_out———single_source
OEM-B74-9ETCS-i ground (ME01)groundFT450-A-A7Power groundgroundsingle_source
OEM-B75-10Mass air flow (VG)analog_in———single_source
OEM-B75-12O2 sensor (OX)lambda_nb_in———single_source
OEM-B75-14Coolant temperature (THW)temp_inFT450-A-A24White input 5 (water temp)temp_insingle_source
OEM-B75-15Accelerator pedal 1 (VPA)analog_inFT450-A-A20White input 1analog_insingle_source
OEM-B75-16Accelerator pedal 2 (VPA2)analog_inFT450-A-A22White input 3 (TPS)analog_insingle_source
OEM-B75-17Power ground (E1)groundFT450-A-A7Power groundgroundsingle_source
OEM-B75-18Sensor ground (E2)sensor_groundFT450-A-A12 + FT450-A-A18Signal ground + RPM reference (crank -)sensor_ground + trigger_insingle_source
OEM-B75-19MAF ground (EVG)sensor_groundFT450-A-A12 + FT450-A-A18Signal ground + RPM reference (crank -)sensor_ground + trigger_insingle_source
OEM-B75-2Sensor power (VC)vrefFT450-A-A14+5V sensor supplyvrefsingle_source
OEM-B75-20A/T 2nd-gear indicator (2)digital_in———single_source
OEM-B75-21A/T 1st-gear indicator (L)digital_in———single_source
OEM-B75-22Intake air temperature (THA)temp_inFT450-A-A26White input 7 (air temp)temp_insingle_source
OEM-B75-23Throttle position 1 (VTA)analog_inFT450-A-A21White input 2analog_insingle_source
OEM-B75-24Throttle position 2 (VTA2)analog_inFT450-A-A25White input 6 (fuel pressure)analog_insingle_source
OEM-B75-3Exhaust gas control VSV (VSV2)low_side_out———single_source
OEM-B75-4O2 sensor heater (HT)low_side_out———single_source
OEM-B75-5Injector 1 (#10)injector_outFT450-A-A1Injector 1 (Bank A)injector_outsingle_source
OEM-B75-6Injector 2 (#20)injector_outFT450-A-A2Injector 2 (Bank A)injector_outsingle_source
OEM-B75-7EVAP purge VSV (PRG)low_side_out———single_source
OEM-B75-8Main oil pressure switch (MOPS)digital_in———single_source
OEM-B75-9Manifold pressure (PIM)analog_inFT450-A-A23White input 4 (oil pressure)analog_insingle_source
OEM-B76-1A/T shift solenoid 1 (S1)low_side_out———single_source
OEM-B76-10OD direct-clutch speed (NCO-)digital_in———single_source
OEM-B76-11No.2 speed sensor return (SP2-)digital_in———single_source
OEM-B76-12Exhaust bypass VSV (VSV3)low_side_out———single_source
OEM-B76-13A/T lock-up solenoid - (SLU-)low_side_out———single_source
OEM-B76-14A/T accumulator solenoid - (SLN-)low_side_out———single_source
OEM-B76-15A/T line-pressure solenoid - (SLT-)low_side_out———single_source
OEM-B76-16Fuel pressure-up VSV (FPU)low_side_out———single_source
OEM-B76-17A/T oil temperature (OIL)temp_in———single_source
OEM-B76-2A/T shift solenoid 2 (S2)low_side_out———single_source
OEM-B76-3A/T shift solenoid 3 (S3)low_side_out———single_source
OEM-B76-4OD direct-clutch speed (NCO+)digital_in———single_source
OEM-B76-5No.2 speed sensor (SP2+)digital_in———single_source
OEM-B76-6A/T shift solenoid 4 (S4)low_side_out———single_source
OEM-B76-7A/T lock-up solenoid + (SLU+)low_side_out———single_source
OEM-B76-8A/T accumulator solenoid + (SLN+)low_side_out———single_source
OEM-B76-9A/T line-pressure solenoid + (SLT+)low_side_out———single_source
OEM-B77-1A/C request (AC)digital_in———single_source
OEM-B77-13A/C clutch relay (ACMG)low_side_out———single_source
OEM-B77-14A/T shift down (SFTD)digital_in———single_source
OEM-B77-16A/T reverse indicator (R)digital_in———single_source
OEM-B77-18Rear right wheel speed (RRO)digital_in———single_source
OEM-B77-19Rear left wheel speed (RLO)digital_in———single_source
OEM-B77-2Starter signal (STA)digital_in———single_source
OEM-B77-20Tachometer output (TACH)tacho_out———single_source
OEM-B77-21ABS active (ABS)digital_in———single_source
OEM-B77-25No.1 speed sensor (SPD)digital_in———single_source
OEM-B77-26Electrical load sense (ELS)digital_in———single_source
OEM-B77-27Road speed (RSPD)digital_in———single_source
OEM-B77-4A/T shift up (SFTU)digital_in———single_source
OEM-B77-5Diagnostic/timing check (TC)digital_in———single_source
OEM-B77-6Stop light switch (STP)digital_in———single_source
OEM-B77-7A/T manual position (3)digital_in———single_source
OEM-B78-1Battery constant (BATT)power_in———single_source
OEM-B78-10EFI main relay control (M-REL)low_side_out———single_source
OEM-B78-11Serial diagnostic (SIL)serial———single_source
OEM-B78-16EFI main relay power (+B)power_inFT450-A-A13+12V switchedpower_insingle_source
OEM-B78-2TRAC snow-mode light (SNOW)low_side_out———single_source
OEM-B78-22Switch ground (EC)sensor_groundFT450-A-A12 + FT450-A-A18Signal ground + RPM reference (crank -)sensor_ground + trigger_insingle_source
OEM-B78-3TRAC snow-mode switch (SNWI)digital_in———single_source
OEM-B78-4Fuel pump diagnostic (DI)digital_in———single_source
OEM-B78-5Fuel pump control (FPC)low_side_out———single_source
OEM-B78-6Check-engine light (W)low_side_out———single_source
OEM-B78-7ETCS-i power (+BM)power_inFT450-A-A13+12V switchedpower_insingle_source
OEM-B78-8EFI main relay power (+B2)power_inFT450-A-A13+12V switchedpower_insingle_source
OEM-B78-9Ignition switch (IGSW)digital_in———single_source
OEM-B79-1TRAC enable light (IND)low_side_out———single_source
OEM-B79-14TRAC active light (CIND)low_side_out———single_source
OEM-B79-17A/T meter LCD (LPO3)low_side_out———single_source
OEM-B79-18A/T meter LCD (SPTL)low_side_out———single_source
OEM-B79-19Reverse buzzer (BZ)low_side_out———single_source
OEM-B79-2TRAC off switch (MSW)digital_in———single_source
OEM-B79-3A/T meter LCD (LPO1)low_side_out———single_source
OEM-B79-4A/T meter LCD (LPO2)low_side_out———single_source
OEM-B79-7Front right wheel speed (FRO)digital_in———single_source
OEM-B79-8Front left wheel speed (FLO)digital_in———single_source

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-B78-16SP-14V-10.85no routeEFI main relay power (+B)—
W2OEM-B78-7SP-14V-10.85no routeETCS-i power (+BM)—
W3OEM-B78-8SP-14V-10.85no routeEFI main relay power (+B2)—
W4SP-14V-1FT450-A-A130.85no route+12V switched—
W5OEM-B74-21SP-GND-10.85no routePower ground (E01)—
W6OEM-B74-31SP-GND-10.85no routePower ground (E02)—
W7OEM-B74-9SP-GND-10.85no routeETCS-i ground (ME01)—
W8OEM-B75-17SP-GND-10.85no routePower ground (E1)—
W9SP-GND-1FT450-A-A70.85no routePower ground—
W10OEM-B74-22SP-0V-10.5no routeCrank/cam sensor return (NE-)—
W11OEM-B75-18SP-0V-10.5no routeSensor ground (E2)—
W12OEM-B75-19SP-0V-10.5no routeMAF ground (EVG)—
W13OEM-B78-22SP-0V-10.5no routeSwitch ground (EC)—
W14SP-0V-1FT450-A-A120.5no routeSignal ground—
W15OEM-B75-2FT450-A-A140.5no routeSensor power (VC)—
W16OEM-B74-23FT450-A-A180.5no routeCrank position (NE+)—
W17SP-0V-1FT450-A-A180.5no routeRPM reference (crank -)—
W18OEM-B74-10FT450-A-A170.5no routeCam position (G2)—
W19OEM-B74-11FT450-A-A80.5no routeIgnition 1 (IGT, cyl 1&6)—
W20OEM-B74-12FT450-A-A90.5no routeIgnition 2 (IGT2, cyl 5&2)—
W21OEM-B74-13FT450-A-A100.5no routeIgnition 3 (IGT3, cyl 3&4)—
W22OEM-B75-5FT450-A-A10.5no routeInjector 1 (#10)—
W23OEM-B75-6FT450-A-A20.5no routeInjector 2 (#20)—
W24OEM-B74-1FT450-A-A10.5no routeInjector 3 (#30)—
W25OEM-B74-2FT450-A-A20.5no routeInjector 4 (#40)—
W26OEM-B74-3FT450-A-A10.5no routeInjector 5 (#50)—
W27OEM-B74-4FT450-A-A20.5no routeInjector 6 (#60)—
W28OEM-B74-17FT450-A-A30.5no routeVVT-i OCV - (OCV-)—
W29OEM-B74-18FT450-A-A40.5no routeVVT-i OCV + (OCV+)—
W30OEM-B74-19FT450-A-A50.5no routeETCS-i clutch - (CL-)—
W31OEM-B74-20FT450-A-A60.5no routeETCS-i clutch + (CL+)—
W32OEM-B75-9FT450-A-A230.5no routeManifold pressure (PIM)—
W33OEM-B75-15FT450-A-A200.5no routeAccelerator pedal 1 (VPA)—
W34OEM-B75-23FT450-A-A210.5no routeThrottle position 1 (VTA)—
W35OEM-B75-16FT450-A-A220.5no routeAccelerator pedal 2 (VPA2)—
W36OEM-B75-24FT450-A-A250.5no routeThrottle position 2 (VTA2)—
W37OEM-B75-14FT450-A-A240.5no routeCoolant temperature (THW)—
W38OEM-B75-22FT450-A-A260.5no routeIntake air temperature (THA)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (8)

SeverityCodeSubjectMessage
errorINJECTOR_BALLASTFT450The 2JZ-GTE injectors (2JZ-GTE fuel injector) are low-impedance, but FT450 drives saturated (high-Z) injectors only. Add a ballast resistor pack in series with each injector, or use an ECU with low-Z / peak-and-hold injector drivers.
errorNET_MERGEDFT450-A-A1 + OEM-B74-1 + OEM-B74-3 + OEM-B75-53 different OEM functions share one net: OEM-B74-1 Injector 3 (#30); OEM-B74-3 Injector 5 (#50); OEM-B75-5 Injector 1 (#10)
errorNET_MERGEDFT450-A-A2 + OEM-B74-2 + OEM-B74-4 + OEM-B75-63 different OEM functions share one net: OEM-B74-2 Injector 4 (#40); OEM-B74-4 Injector 6 (#60); OEM-B75-6 Injector 2 (#20)
errorREQUIRED_UNMAPPEDOEM-B74-7Required OEM function "ETCS-i motor - (M-)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-B74-8Required OEM function "ETCS-i motor + (M+)" (hbridge_out) is not connected to the new ECU.
errorREQUIRED_UNMAPPEDOEM-B78-9Required OEM function "Ignition switch (IGSW)" (digital_in) is not connected to the new ECU.
infoNET_FAMILYFT450-A-A12 ↔ FT450-A-A18FT450-A-A12 "Signal ground" [sensor_ground] is wired to FT450-A-A18 "RPM reference (crank -)" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs.
infoUNMAPPEDOEM65 optional OEM pins are not mapped: OEM-B74-15 Wastegate VSV (PMC); OEM-B74-24 Neutral/park switch (NSW); OEM-B74-25 Igniter verification (IGF); OEM-B74-27 Knock sensor 2 (KNK2, rear); OEM-B74-28 Knock sensor 1 (KNK1, front); OEM-B74-30 ETCS-i motor shield (GEO1); OEM-B74-5 Intake air bypass VSV (VSV1); OEM-B75-10 Mass air flow (VG); OEM-B75-12 O2 sensor (OX); OEM-B75-20 A/T 2nd-gear indicator (2); OEM-B75-21 A/T 1st-gear indicator (L); OEM-B75-3 Exhaust gas control VSV (VSV2); OEM-B75-4 O2 sensor heater (HT); OEM-B75-7 EVAP purge VSV (PRG); OEM-B75-8 Main oil pressure switch (MOPS); OEM-B76-1 A/T shift solenoid 1 (S1); OEM-B76-10 OD direct-clutch speed (NCO-); OEM-B76-11 No.2 speed sensor return (SP2-); OEM-B76-12 Exhaust bypass VSV (VSV3); OEM-B76-13 A/T lock-up solenoid - (SLU-); OEM-B76-14 A/T accumulator solenoid - (SLN-); OEM-B76-15 A/T line-pressure solenoid - (SLT-); OEM-B76-16 Fuel pressure-up VSV (FPU); OEM-B76-17 A/T oil temperature (OIL); OEM-B76-2 A/T shift solenoid 2 (S2); OEM-B76-3 A/T shift solenoid 3 (S3); OEM-B76-4 OD direct-clutch speed (NCO+); OEM-B76-5 No.2 speed sensor (SP2+); OEM-B76-6 A/T shift solenoid 4 (S4); OEM-B76-7 A/T lock-up solenoid + (SLU+); OEM-B76-8 A/T accumulator solenoid + (SLN+); OEM-B76-9 A/T line-pressure solenoid + (SLT+); OEM-B77-1 A/C request (AC); OEM-B77-13 A/C clutch relay (ACMG); OEM-B77-14 A/T shift down (SFTD); OEM-B77-16 A/T reverse indicator (R); OEM-B77-18 Rear right wheel speed (RRO); OEM-B77-19 Rear left wheel speed (RLO); OEM-B77-2 Starter signal (STA); OEM-B77-20 Tachometer output (TACH); OEM-B77-21 ABS active (ABS); OEM-B77-25 No.1 speed sensor (SPD); OEM-B77-26 Electrical load sense (ELS); OEM-B77-27 Road speed (RSPD); OEM-B77-4 A/T shift up (SFTU); OEM-B77-5 Diagnostic/timing check (TC); OEM-B77-6 Stop light switch (STP); OEM-B77-7 A/T manual position (3); OEM-B78-10 EFI main relay control (M-REL); OEM-B78-11 Serial diagnostic (SIL); OEM-B78-2 TRAC snow-mode light (SNOW); OEM-B78-3 TRAC snow-mode switch (SNWI); OEM-B78-4 Fuel pump diagnostic (DI); OEM-B78-5 Fuel pump control (FPC); OEM-B78-6 Check-engine light (W); OEM-B79-1 TRAC enable light (IND); OEM-B79-14 TRAC active light (CIND); OEM-B79-17 A/T meter LCD (LPO3); OEM-B79-18 A/T meter LCD (SPTL); OEM-B79-19 Reverse buzzer (BZ); OEM-B79-2 TRAC off switch (MSW); OEM-B79-3 A/T meter LCD (LPO1); OEM-B79-4 A/T meter LCD (LPO2); OEM-B79-7 Front right wheel speed (FRO); OEM-B79-8 Front left wheel speed (FLO)

Accepted (1)

CodeSubjectReasonBy
REQUIRED_UNMAPPEDOEM-B78-1Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed.mapping-proposal

Notes

Fit check: needs add-on. Resolve these before building: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-B78 9: Ignition switch (IGSW): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); FuelTech FT450 has no dedicated key-on input - OEM-B74 7: ETCS-i motor - (M-): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-B74 8: ETCS-i motor + (M+): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand Not wired: - OEM-B78 1: Battery constant (BATT): FuelTech FT450 has no battery-constant input; not needed - OEM-B74 28: Knock sensor 1 (KNK1, front): no free knock input on FuelTech FT450 - OEM-B74 27: Knock sensor 2 (KNK2, rear): no free knock input on FuelTech FT450 - OEM-B74 30: ETCS-i motor shield (GEO1): no shield pin on FuelTech FT450 - OEM-B77 13: A/C clutch relay (ACMG): no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on FuelTech FT450 - OEM-B78 10: EFI main relay control (M-REL): no free relay_control/low_side/heater_low_side/ls_hs/injector rated ≥ 0.2 A on FuelTech FT450 - OEM-B75 4: O2 sensor heater (HT): no free heater_low_side/low_side/relay_control/ls_hs/injector on FuelTech FT450 - OEM-B76 1: A/T shift solenoid 1 (S1): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 2: A/T shift solenoid 2 (S2): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 3: A/T shift solenoid 3 (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 6: A/T shift solenoid 4 (S4): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B74 15: Wastegate VSV (PMC): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B74 5: Intake air bypass VSV (VSV1): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B75 3: Exhaust gas control VSV (VSV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B75 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 12: Exhaust bypass VSV (VSV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 13: A/T lock-up solenoid - (SLU-): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 14: A/T accumulator solenoid - (SLN-): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 15: A/T line-pressure solenoid - (SLT-): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 16: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 7: A/T lock-up solenoid + (SLU+): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 8: A/T accumulator solenoid + (SLN+): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B76 9: A/T line-pressure solenoid + (SLT+): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B78 2: TRAC snow-mode light (SNOW): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B78 5: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B78 6: Check-engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 1: TRAC enable light (IND): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 14: TRAC active light (CIND): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 17: A/T meter LCD (LPO3): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 18: A/T meter LCD (SPTL): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 19: Reverse buzzer (BZ): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 3: A/T meter LCD (LPO1): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B79 4: A/T meter LCD (LPO2): no free low_side/relay_control/heater_low_side/ls_hs/injector on FuelTech FT450 - OEM-B77 20: Tachometer output (TACH): no free tacho/frequency_out/low_side/ls_hs on FuelTech FT450 - OEM-B75 10: Mass air flow (VG): no free maf/analog_0_5 on FuelTech FT450 - OEM-B75 12: O2 sensor (OX): no free o2_narrowband/analog_0_5 on FuelTech FT450 - OEM-B76 17: A/T oil temperature (OIL): no free thermistor/analog_0_5 on FuelTech FT450 - OEM-B77 25: No.1 speed sensor (SPD): no free frequency_in/switch_in on FuelTech FT450 - OEM-B76 11: No.2 speed sensor return (SP2-): no free frequency_in/switch_in on FuelTech FT450 - OEM-B76 5: No.2 speed sensor (SP2+): no free frequency_in/switch_in on FuelTech FT450 - OEM-B74 25: Igniter verification (IGF): no free frequency_in/switch_in on FuelTech FT450 - OEM-B76 10: OD direct-clutch speed (NCO-): no free frequency_in/switch_in on FuelTech FT450 - OEM-B76 4: OD direct-clutch speed (NCO+): no free frequency_in/switch_in on FuelTech FT450 - OEM-B77 18: Rear right wheel speed (RRO): no free frequency_in/switch_in on FuelTech FT450 - OEM-B77 19: Rear left wheel speed (RLO): no free frequency_in/switch_in on FuelTech FT450 - OEM-B77 27: Road speed (RSPD): no free frequency_in/switch_in on FuelTech FT450 - OEM-B78 4: Fuel pump diagnostic (DI): no free frequency_in/switch_in on FuelTech FT450 - OEM-B79 7: Front right wheel speed (FRO): no free frequency_in/switch_in on FuelTech FT450 - OEM-B79 8: Front left wheel speed (FLO): no free frequency_in/switch_in on FuelTech FT450 - OEM-B75 21: A/T 1st-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B75 20: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B74 24: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B75 8: Main oil pressure switch (MOPS): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 1: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 14: A/T shift down (SFTD): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 16: A/T reverse indicator (R): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 21: ABS active (ABS): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 26: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 4: A/T shift up (SFTU): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B77 7: A/T manual position (3): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B78 3: TRAC snow-mode switch (SNWI): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B79 2: TRAC off switch (MSW): no free switch_in/frequency_in/analog_0_5 on FuelTech FT450 - OEM-B78 11: Serial diagnostic (SIL): no free k_line on FuelTech FT450

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docFuelTech FT450/FT550 ready harness manual (4 & 6 cylinder) — FT450 Connector A pinouthttp://ftmanager.fueltech.com.br/downloads/manual/Portugues/Chicote_pronto_FT450-FT550.pdf———
3community_copywilbo666: 2JZ-GTE VVTi JZA80 Supra Engine Wiring (ECU pinout, B74-B79)http://wilbo666.pbworks.com/w/page/57949268/2JZ-GTE%20VVTi%20JZA80%20Supra%20Engine%20Wiring———