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Toyota Supra A70 1986-92 (7M-GTE) → rusEFI Proteus (auto)

Toyota Supra A70 1986-92 (7M-GTE) — rusEFI — Proteus
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12

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 errors2: read the Findings page before cutting any wire
Size of the job27 wires · 8 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-A-26SP-GND-10.85☐☐☐☐☐☐☐
W2SP-GND-1PROTEUS-Black23-140.85☐☐☐☐☐☐☐
W3SP-GND-1PROTEUS-Black23-190.85☐☐☐☐☐☐☐
W4SP-GND-1PROTEUS-Black23-200.85☐☐☐☐☐☐☐
W5SP-GND-1PROTEUS-Black35-170.85☐☐☐☐☐☐☐
W6SP-GND-1PROTEUS-Black35-180.85☐☐☐☐☐☐☐
W7SP-GND-1PROTEUS-Black35-240.85☐☐☐☐☐☐☐
W8OEM-B-9SP-0V-10.5☐☐☐☐☐☐☐
W9SP-0V-1PROTEUS-White35-10.5☐☐☐☐☐☐☐
W10SP-0V-1PROTEUS-White35-20.5☐☐☐☐☐☐☐
W11SP-0V-1PROTEUS-White35-230.5☐☐☐☐☐☐☐
W12SP-0V-1PROTEUS-White35-290.5☐☐☐☐☐☐☐
W13SP-0V-1PROTEUS-White35-30.5☐☐☐☐☐☐☐
W14SP-0V-1PROTEUS-White35-40.5☐☐☐☐☐☐☐
W15SP-0V-1PROTEUS-White35-50.5☐☐☐☐☐☐☐
W16SP-0V-1PROTEUS-White35-60.5☐☐☐☐☐☐☐
W17SP-0V-1PROTEUS-White35-70.5☐☐☐☐☐☐☐
W18SP-0V-1PROTEUS-White35-80.5☐☐☐☐☐☐☐
W19OEM-A-12PROTEUS-Black35-30.5☐☐☐☐☐☐☐
W20OEM-A-11PROTEUS-Black35-150.5☐☐☐☐☐☐☐
W21OEM-A-25PROTEUS-Black35-40.5☐☐☐☐☐☐☐
W22OEM-B-11PROTEUS-White35-130.5☐☐☐☐☐☐☐
W23OEM-B-4PROTEUS-White35-200.5☐☐☐☐☐☐☐
W24OEM-B-2PROTEUS-Black23-20.5☐☐☐☐☐☐☐
W25OEM-B-6PROTEUS-White35-240.5☐☐☐☐☐☐☐
W26OEM-B-3PROTEUS-White35-300.5☐☐☐☐☐☐☐
W27OEM-D-9PROTEUS-Black23-100.5☐☐☐☐☐☐☐

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
No supply/ground nets found to cross-check.

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

Revisions

RevLabelByDate
No revisions yet.

Schematic

OEM-AOEM-BOEM-DPROTEUS-Black23PROTEUS-Black35PROTEUS-White35SP-0VSP-GND

Connectors

OEM-A

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
11Injectors 2 & 6 (No.20)—W20—0.5PROTEUS-Black35-15———
12Injectors 1 & 4 (No.10)—W19—0.5PROTEUS-Black35-3———
25Injectors 3 & 5 (No.30)—W21—0.5PROTEUS-Black35-4———
26Power ground (E01/E02)—W1—0.85SP-GND-1———

OEM-B

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
11Throttle position sensor (VTA)—W22—0.5PROTEUS-White35-13———
2Karman-vortex AFM signal (KS)—W24—0.5PROTEUS-Black23-2———
3Intake air temp (THA)—W26—0.5PROTEUS-White35-30———
4Coolant temp (THW)—W23—0.5PROTEUS-White35-20———
6Primary O2 sensor (OX1)—W25—0.5PROTEUS-White35-24———
9Sensor ground (E2)—W8—0.5SP-0V-1———

OEM-D

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
9Vehicle speed sensor (SPD)—W27—0.5PROTEUS-Black23-10———

PROTEUS-Black23

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Digital 2————————
10Digital 1—W27—0.5OEM-D-9———
11Digital 6————————
12VR 2 negative————————
13VR 1 negative————————
14Power ground—W2—0.85SP-GND-1———
15ETB 2 positive————————
16CAN 1 Low————————
17CAN 1 High————————
18Ignition switch in————————
19Power ground—W3—0.85SP-GND-1———
2Digital 3—W24—0.5OEM-B-2———
20Power ground—W4—0.85SP-GND-1———
21CAN 2 Low————————
22CAN 2 High————————
23Main relay feed————————
3Digital 4————————
4VR 2 positive————————
5VR 1 positive————————
6ETB 1 negative————————
7ETB 1 positive————————
8ETB 2 negative————————
9Digital 5————————

PROTEUS-Black35

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Highside 2————————
10Lowside 13————————
11Lowside 14————————
12Lowside 15————————
13Highside 3————————
14Highside 4————————
15Injector 2—W20—0.5OEM-A-11———
16Injector 4————————
17Power ground—W5—0.85SP-GND-1———
18Power ground—W6—0.85SP-GND-1———
19Injector 8————————
2Highside 1————————
20Lowside 10————————
21Lowside 12————————
22Ignition 3————————
23Lowside 16————————
24Power ground—W7—0.85SP-GND-1———
25Ignition 12————————
26Ignition 11————————
27Ignition 10————————
28Ignition 9————————
29Ignition 8————————
3Injector 1—W19—0.5OEM-A-12———
30Ignition 7————————
31Ignition 6————————
32Ignition 5————————
33Ignition 4————————
34Ignition 2————————
35Ignition 1————————
4Injector 3—W21—0.5OEM-A-25———
5Injector 5————————
6Injector 6————————
7Injector 7————————
8Injector 9————————
9Lowside 11————————

PROTEUS-White35

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1Sensor ground—W9—0.5SP-0V-1———
105V supply #2————————
1112V sensor supply————————
1212V sensor supply————————
13Analog Volt 1—W22—0.5OEM-B-11———
14Analog Volt 3————————
15Analog Volt 5————————
16Analog Volt 7————————
17Analog Volt 9————————
18Analog Volt 11————————
19Thermistor 1————————
2Sensor ground—W10—0.5SP-0V-1———
20Coolant temp (CLT)—W23—0.5OEM-B-4———
215V supply #1————————
225V supply #2————————
23Sensor ground—W11—0.5SP-0V-1———
24Analog Volt 2—W25—0.5OEM-B-6———
25Analog Volt 4————————
26Analog Volt 6————————
27Analog Volt 8————————
28Analog Volt 10————————
29Sensor ground—W12—0.5SP-0V-1———
3Sensor ground—W13—0.5SP-0V-1———
30Intake air temp (IAT)—W26—0.5OEM-B-3———
31Thermistor 4————————
325V supply #1————————
335V supply #2————————
34Knock 1————————
35Knock 2————————
4Sensor ground—W14—0.5SP-0V-1———
5Sensor ground—W15—0.5SP-0V-1———
6Sensor ground—W16—0.5SP-0V-1———
7Sensor ground—W17—0.5SP-0V-1———
8Sensor ground—W18—0.5SP-0V-1———
95V supply #1————————

SP-0V

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W8—0.5OEM-B-9———
1——W9—0.5PROTEUS-White35-1———
1——W10—0.5PROTEUS-White35-2———
1——W11—0.5PROTEUS-White35-23———
1——W12—0.5PROTEUS-White35-29———
1——W13—0.5PROTEUS-White35-3———
1——W14—0.5PROTEUS-White35-4———
1——W15—0.5PROTEUS-White35-5———
1——W16—0.5PROTEUS-White35-6———
1——W17—0.5PROTEUS-White35-7———
1——W18—0.5PROTEUS-White35-8———

SP-GND

CavityFunctionSignalWireColourGauge (mm²)DestinationTerminalSealPlug
1——W1—0.85OEM-A-26———
1——W2—0.85PROTEUS-Black23-14———
1——W3—0.85PROTEUS-Black23-19———
1——W4—0.85PROTEUS-Black23-20———
1——W5—0.85PROTEUS-Black35-17———
1——W6—0.85PROTEUS-Black35-18———
1——W7—0.85PROTEUS-Black35-24———

Pin map

OEM pointOEM functionOEM familyTarget pointTarget functionTarget familyWire colourEvidence
OEM-A-11Injectors 2 & 6 (No.20)injector_outPROTEUS-Black35-15Injector 2injector_outcorroborated
OEM-A-12Injectors 1 & 4 (No.10)injector_outPROTEUS-Black35-3Injector 1injector_outcorroborated
OEM-A-25Injectors 3 & 5 (No.30)injector_outPROTEUS-Black35-4Injector 3injector_outcorroborated
OEM-A-26Power ground (E01/E02)groundPROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24Power ground + Power ground + Power ground + Power ground + Power ground + Power groundgroundcorroborated
OEM-B-11Throttle position sensor (VTA)analog_inPROTEUS-White35-13Analog Volt 1analog_incorroborated
OEM-B-2Karman-vortex AFM signal (KS)digital_inPROTEUS-Black23-2Digital 3digital_incorroborated
OEM-B-3Intake air temp (THA)temp_inPROTEUS-White35-30Intake air temp (IAT)temp_incorroborated
OEM-B-4Coolant temp (THW)temp_inPROTEUS-White35-20Coolant temp (CLT)temp_incorroborated
OEM-B-6Primary O2 sensor (OX1)lambda_nb_inPROTEUS-White35-24Analog Volt 2analog_incorroborated
OEM-B-9Sensor ground (E2)sensor_groundPROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor groundsensor_groundcorroborated
OEM-D-9Vehicle speed sensor (SPD)digital_inPROTEUS-Black23-10Digital 1digital_incorroborated

Cut list

WireFromToGauge (mm²)ColourLengthSignalIdent
W1OEM-A-26SP-GND-10.85no routePower ground (E01/E02)—
W2SP-GND-1PROTEUS-Black23-140.85no routePower ground—
W3SP-GND-1PROTEUS-Black23-190.85no routePower ground—
W4SP-GND-1PROTEUS-Black23-200.85no routePower ground—
W5SP-GND-1PROTEUS-Black35-170.85no routePower ground—
W6SP-GND-1PROTEUS-Black35-180.85no routePower ground—
W7SP-GND-1PROTEUS-Black35-240.85no routePower ground—
W8OEM-B-9SP-0V-10.5no routeSensor ground (E2)—
W9SP-0V-1PROTEUS-White35-10.5no routeSensor ground—
W10SP-0V-1PROTEUS-White35-20.5no routeSensor ground—
W11SP-0V-1PROTEUS-White35-230.5no routeSensor ground—
W12SP-0V-1PROTEUS-White35-290.5no routeSensor ground—
W13SP-0V-1PROTEUS-White35-30.5no routeSensor ground—
W14SP-0V-1PROTEUS-White35-40.5no routeSensor ground—
W15SP-0V-1PROTEUS-White35-50.5no routeSensor ground—
W16SP-0V-1PROTEUS-White35-60.5no routeSensor ground—
W17SP-0V-1PROTEUS-White35-70.5no routeSensor ground—
W18SP-0V-1PROTEUS-White35-80.5no routeSensor ground—
W19OEM-A-12PROTEUS-Black35-30.5no routeInjectors 1 & 4 (No.10)—
W20OEM-A-11PROTEUS-Black35-150.5no routeInjectors 2 & 6 (No.20)—
W21OEM-A-25PROTEUS-Black35-40.5no routeInjectors 3 & 5 (No.30)—
W22OEM-B-11PROTEUS-White35-130.5no routeThrottle position sensor (VTA)—
W23OEM-B-4PROTEUS-White35-200.5no routeCoolant temp (THW)—
W24OEM-B-2PROTEUS-Black23-20.5no routeKarman-vortex AFM signal (KS)—
W25OEM-B-6PROTEUS-White35-240.5no routePrimary O2 sensor (OX1)—
W26OEM-B-3PROTEUS-White35-300.5no routeIntake air temp (THA)—
W27OEM-D-9PROTEUS-Black23-100.5no routeVehicle speed sensor (SPD)—

Bill of materials

CategoryPart numberManufacturerDescriptionQtyUnit

ECU setup sheet

RoleEngine refEngine signalSensorECU pointECU functionECU classSetup flag
No configured channels.

Findings

Open (3)

SeverityCodeSubjectMessage
errorINJECTOR_BALLASTProteusThe 7M-GTE injectors (7M-GTE fuel injector) are low-impedance, but Proteus 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.
errorPHYS_REQUIRED_OPENPROTEUS-Black23-23PROTEUS-Black23-23 "Main relay feed" is required but not wired.
warnNO_FUEL_PUMPfuel pumpThis engine harness has no fuel-pump control path: no fuel-pump relay output is wired to the new ECU. If the stock car switches the pump outside the ECU (an airflow-meter contact or a separate module), the standalone must drive the pump relay itself — see the install notes for this car.

Accepted (0)

CodeSubjectReasonBy

Notes

Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Toyota 7M-GTE not found in the ECU's docs (Confirmed absent from documented trigger/decoder list. The 7M-GTE uses a Nippondenso CAS (Ne=24 + G1/G2). rusEFI has no 24+1/24+2 Nippondenso CAS decoder; Toyota modes are 2JZ 12-tooth, 3-tooth UZ, VVT Toyota 4-1/3-tooth and 36-2-2-2 onl...) Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - Main-relay feed: no ecu_main_power pin on the stock or the new ECU - PROTEUS-Black23 23: Main relay feed: required by rusEFI Proteus but no stock pin feeds it; wire by hand - Fuel-pump control: rusEFI Proteus needs to drive the fuel pump, but the stock ECU has no fuel-pump output (an airflow-meter contact or a separate module runs it). Add a fuel-pump relay on a spare low-side output — see the install notes for this car. Not wired: - PROTEUS-Black23 18: Ignition switch in: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source

Sources

ReliabilityKindTitleURLArchiveCapturedSHA-256
4vendor_docToyota 7M-GTE EFI manual — "Terminals of ECU" (complete terminal list, no pin numbers)http://shoarmateam.nl/upload/Toyota-Other/Cressida/MX83/efi%20system%20+%20WIRING/toyota-7m-manual-efi-fi%5b1%5d.pdf———
4vendor_docrusEFI Proteus — board connector definitions (Black35 / White35 / Black23)https://github.com/rusefi/rusefi/tree/master/firmware/config/boards/proteus/connectorsarchive2026-10-05738a2ea934c0
2forumAllPinouts: 1989–1992 Toyota Supra ECUhttps://allpinouts.org/pinouts/connectors/car/1989-1992-toyota-supra-ecu/———