Toyota Supra A80 1993-98 USDM (2JZ-GTE, non-VVT) → Speeduino Speeduino v0.4 (auto)
Toyota Supra A80 1993-98 USDM (2JZ-GTE, non-VVT) — Speeduino — Speeduino
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-20
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.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 3: read the Findings page before cutting any wire |
| Size of the job | 46 wires · 9 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. 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.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-E10-31 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-E10-1 | MAIN-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | NEW-BATT-1 | MAIN-R-IN | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | MAIN-R-COIL- | SP-GND-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | MAIN-R-OUT | SPEEDUINO-PWR-12V | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-E9-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-E9-69 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E9-78 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-E9-79 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-E9-80 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-E9-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-E9-6 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-E9-65 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-E9-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-E9-41 | SPEEDUINO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-E9-27 | SPEEDUINO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-E9-26 | SPEEDUINO-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-E9-25 | SPEEDUINO-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-E9-57 | SPEEDUINO-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-E9-56 | SPEEDUINO-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-E9-55 | SPEEDUINO-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-E9-54 | SPEEDUINO-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-E9-20 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-E9-19 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-E9-18 | SPEEDUINO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-E9-17 | SPEEDUINO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E9-16 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E9-15 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E9-62 | SPEEDUINO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E9-43 | SPEEDUINO-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-E9-44 | SPEEDUINO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-E10-23 | SPEEDUINO-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-E10-24 | SPEEDUINO-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E9-71 | SPEEDUINO-A-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-E9-72 | SPEEDUINO-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-E10-22 | SPEEDUINO-A-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-E10-6 | SPEEDUINO-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-E10-16 | SPEEDUINO-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-E9-47 | SPEEDUINO-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-E9-45 | SPEEDUINO-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-E10-2 | SPEEDUINO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-E10-21 | SPEEDUINO-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
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 A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | MAIN-R-COIL+ | MAIN-R-COIL- | open (OL) | +12 V supply must not touch power ground | |
| 2 | MAIN-R-COIL+ | SPEEDUINO-A-12 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | OEM-E10-31 | MAIN-R-COIL- | open (OL) | +12 V supply must not touch power ground | |
| 4 | OEM-E10-31 | SPEEDUINO-A-12 | open (OL) | +12 V supply must not touch sensor ground | |
| 5 | SPEEDUINO-A-13 | SPEEDUINO-A-12 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 6 | MAIN-R-COIL+ | SPEEDUINO-A-13 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 7 | MAIN-R-COIL- | MAIN-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 8 | MAIN-R-COIL- | NEW-BATT-1 | open (OL) | power ground must not touch +12 V supply | |
| 9 | MAIN-R-COIL- | SPEEDUINO-A-13 | open (OL) | power ground must not touch 5 V sensor reference | |
| 10 | OEM-E10-31 | SPEEDUINO-A-13 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 11 | SPEEDUINO-A-12 | MAIN-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 12 | SPEEDUINO-A-12 | NEW-BATT-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 13 | SPEEDUINO-A-13 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 14 | SPEEDUINO-A-13 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAIN-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (ignition-switched +12V) | — | W2 | — | 0.5 | OEM-E10-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W4 | — | 0.5 | SP-GND-1 | — | — | — |
| IN | Relay contact input (battery + via main fuse) | — | W3 | — | 0.85 | NEW-BATT-1 | — | — | — |
| OUT | Relay contact output (switched +12V bus) | — | W5 | — | 0.85 | SPEEDUINO-PWR-12V | — | — | — |
NEW-BATT
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W3 | — | 0.85 | MAIN-R-IN | — | — | — |
OEM-E10
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition switch (IGSW) | — | W2 | — | 0.5 | MAIN-R-COIL+ | — | — | — |
| 15 | Electrical load sensor (ELS) | — | — | — | — | — | — | — | — |
| 16 | Tachometer output | — | W42 | — | 0.5 | SPEEDUINO-A-17 | — | — | — |
| 2 | Vehicle speed sensor (SP1) | — | W45 | — | 0.5 | SPEEDUINO-A-14 | — | — | — |
| 21 | Fuel pump diagnostic (DI) | — | W46 | — | 0.5 | SPEEDUINO-A-18 | — | — | — |
| 22 | Fuel pump control (FPC) | — | W40 | — | 0.5 | SPEEDUINO-A-37 | — | — | — |
| 23 | A/C clutch relay (ACMG) | — | W36 | — | 0.5 | SPEEDUINO-A-16 | — | — | — |
| 24 | Main relay control (M-REL) | — | W37 | — | 0.5 | SPEEDUINO-A-15 | — | — | — |
| 31 | ECU power +B (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 33 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 4 | Brake switch (STP) | — | — | — | — | — | — | — | — |
| 6 | Malfunction indicator lamp (MIL) | — | W41 | — | 0.5 | SPEEDUINO-A-38 | — | — | — |
OEM-E9
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 15 | Injector 6 | — | W32 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 16 | Injector 5 | — | W31 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 17 | Injector 4 | — | W30 | — | 0.5 | SPEEDUINO-A-5 | — | — | — |
| 18 | Injector 3 | — | W29 | — | 0.5 | SPEEDUINO-A-3 | — | — | — |
| 19 | Injector 2 | — | W28 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 20 | Injector 1 | — | W27 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 25 | Camshaft position 2 (G2) | — | W22 | — | 0.5 | SPEEDUINO-A-26 | — | — | — |
| 26 | Camshaft position 1 (G1) | — | W21 | — | 0.5 | SPEEDUINO-A-24 | — | — | — |
| 27 | Crank position (NE) | — | W20 | — | 0.5 | SPEEDUINO-A-25 | — | — | — |
| 32 | ISC stepper winding | — | — | — | — | — | — | — | — |
| 33 | ISC stepper winding | — | — | — | — | — | — | — | — |
| 34 | ISC stepper winding | — | — | — | — | — | — | — | — |
| 35 | ISC stepper winding | — | — | — | — | — | — | — | — |
| 4 | Power ground (E11) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 41 | Sensor supply +5V (VCC) | — | W19 | — | 0.5 | SPEEDUINO-A-13 | — | — | — |
| 43 | Throttle position (VTA1) | — | W34 | — | 0.5 | SPEEDUINO-A-22 | — | — | — |
| 44 | Coolant temperature (THW) | — | W35 | — | 0.5 | SPEEDUINO-A-19 | — | — | — |
| 45 | Intake air temperature (THA) | — | W44 | — | 0.5 | SPEEDUINO-A-20 | — | — | — |
| 47 | O2 sensor 2 (OX2) | — | W43 | — | 0.5 | SPEEDUINO-A-21 | — | — | — |
| 48 | O2 sensor 1 (OX1) | — | — | — | — | — | — | — | — |
| 49 | Knock sensor 2 (KNK2) | — | — | — | — | — | — | — | — |
| 5 | Cam sensor 2 ground (G2-) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 50 | Knock sensor 1 (KNK1) | — | — | — | — | — | — | — | — |
| 52 | Ignition 6 (IGT6) | — | — | — | — | — | — | — | — |
| 53 | Ignition 5 (IGT5) | — | — | — | — | — | — | — | — |
| 54 | Ignition 4 (IGT4) | — | W26 | — | 0.5 | SPEEDUINO-A-8 | — | — | — |
| 55 | Ignition 3 (IGT3) | — | W25 | — | 0.5 | SPEEDUINO-A-33 | — | — | — |
| 56 | Ignition 2 (IGT2) | — | W24 | — | 0.5 | SPEEDUINO-A-34 | — | — | — |
| 57 | Ignition 1 (IGT1) | — | W23 | — | 0.5 | SPEEDUINO-A-7 | — | — | — |
| 58 | Ignition confirmation (IGF) | — | — | — | — | — | — | — | — |
| 6 | Cam sensor 1 ground (G1-) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 60 | Wastegate VSV (boost control) | — | — | — | — | — | — | — | — |
| 62 | MAP sensor (PIM) | — | W33 | — | 0.5 | SPEEDUINO-A-11 | — | — | — |
| 65 | Sensor ground (E2) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 69 | ECU power ground (E1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 7 | Crank sensor ground (NE-) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 71 | O2 heater 1 (HT1) | — | W38 | — | 0.5 | SPEEDUINO-A-36 | — | — | — |
| 72 | O2 heater 2 (HT2) | — | W39 | — | 0.5 | SPEEDUINO-A-35 | — | — | — |
| 73 | Fuel pressure-up VSV (FPU) | — | — | — | — | — | — | — | — |
| 74 | Purge VSV (EVAP) | — | — | — | — | — | — | — | — |
| 76 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 78 | Power ground (E01) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 79 | Power ground (E01/E02) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 80 | Power ground (E01/E02) | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-E9-5 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-E9-6 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-E9-65 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-E9-7 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | SPEEDUINO-A-12 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | SPEEDUINO-A-23 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-E10-31 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.5 | MAIN-R-COIL- | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-E9-4 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-E9-69 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E9-78 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-E9-79 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-E9-80 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | SPEEDUINO-A-10 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | SPEEDUINO-A-9 | — | — | — |
SPEEDUINO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W27 | — | 0.5 | OEM-E9-20 | — | — | — |
| 1 | Injector 1 | — | W31 | — | 0.5 | OEM-E9-16 | — | — | — |
| 10 | Ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | MAP sensor (0-5V) | — | W33 | — | 0.5 | OEM-E9-62 | — | — | — |
| 12 | Ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | 5V | — | W19 | — | 0.5 | OEM-E9-41 | — | — | — |
| 14 | Proto area 1 (flex fuel) | — | W45 | — | 0.5 | OEM-E10-2 | — | — | — |
| 15 | Proto area 2 (fan) | — | W37 | — | 0.5 | OEM-E10-24 | — | — | — |
| 16 | Proto area 3 (fuel pump) | — | W36 | — | 0.5 | OEM-E10-23 | — | — | — |
| 17 | Proto area 4 (tachometer) | — | W42 | — | 0.5 | OEM-E10-16 | — | — | — |
| 18 | Proto area 5 (clutch) | — | W46 | — | 0.5 | OEM-E10-21 | — | — | — |
| 19 | Coolant temp (CLT) | — | W35 | — | 0.5 | OEM-E9-44 | — | — | — |
| 2 | Injector 2 | — | W28 | — | 0.5 | OEM-E9-19 | — | — | — |
| 2 | Injector 2 | — | W32 | — | 0.5 | OEM-E9-15 | — | — | — |
| 20 | Inlet air temp (IAT) | — | W44 | — | 0.5 | OEM-E9-45 | — | — | — |
| 21 | O2 sensor | — | W43 | — | 0.5 | OEM-E9-47 | — | — | — |
| 22 | TPS input | — | W34 | — | 0.5 | OEM-E9-43 | — | — | — |
| 23 | Ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Cam input / VR2+ | — | W21 | — | 0.5 | OEM-E9-26 | — | — | — |
| 25 | Crank input / VR1+ | — | W20 | — | 0.5 | OEM-E9-27 | — | — | — |
| 26 | VR2- | — | W22 | — | 0.5 | OEM-E9-25 | — | — | — |
| 27 | VR1- | — | — | — | — | — | — | — | — |
| 28 | 5V | — | — | — | — | — | — | — | — |
| 29 | Idle stepper 2B | — | — | — | — | — | — | — | — |
| 3 | Injector 3 | — | W29 | — | 0.5 | OEM-E9-18 | — | — | — |
| 30 | Idle stepper 2A | — | — | — | — | — | — | — | — |
| 31 | Idle stepper 1A | — | — | — | — | — | — | — | — |
| 32 | Idle stepper 1B | — | — | — | — | — | — | — | — |
| 33 | Ignition 3 | — | W25 | — | 0.5 | OEM-E9-55 | — | — | — |
| 34 | Ignition 2 | — | W24 | — | 0.5 | OEM-E9-56 | — | — | — |
| 35 | Boost | — | W39 | — | 0.5 | OEM-E9-72 | — | — | — |
| 36 | Idle 2 (3-wire idle) | — | W38 | — | 0.5 | OEM-E9-71 | — | — | — |
| 37 | PWM idle | — | W40 | — | 0.5 | OEM-E10-22 | — | — | — |
| 38 | VVT | — | W41 | — | 0.5 | OEM-E10-6 | — | — | — |
| 5 | Injector 4 | — | W30 | — | 0.5 | OEM-E9-17 | — | — | — |
| 7 | Ignition 1 | — | W23 | — | 0.5 | OEM-E9-57 | — | — | — |
| 8 | Ignition 4 | — | W26 | — | 0.5 | OEM-E9-54 | — | — | — |
| 9 | Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
SPEEDUINO-PWR
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 12V | Main power (+12 V switched) | — | W5 | — | 0.85 | MAIN-R-OUT | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-E10-1 | Ignition switch (IGSW) | digital_in | MAIN-R-COIL+ | Relay coil positive (ignition-switched +12V) | power_in | corroborated | |
| OEM-E10-15 | Electrical load sensor (ELS) | digital_in | — | — | — | single_source | |
| OEM-E10-16 | Tachometer output | tacho_out | SPEEDUINO-A-17 | Proto area 4 (tachometer) | tacho_out | corroborated | |
| OEM-E10-2 | Vehicle speed sensor (SP1) | digital_in | SPEEDUINO-A-14 | Proto area 1 (flex fuel) | digital_in | corroborated | |
| OEM-E10-21 | Fuel pump diagnostic (DI) | digital_in | SPEEDUINO-A-18 | Proto area 5 (clutch) | digital_in | single_source | |
| OEM-E10-22 | Fuel pump control (FPC) | low_side_out | SPEEDUINO-A-37 | PWM idle | low_side_out | corroborated | |
| OEM-E10-23 | A/C clutch relay (ACMG) | low_side_out | SPEEDUINO-A-16 | Proto area 3 (fuel pump) | low_side_out | corroborated | |
| OEM-E10-24 | Main relay control (M-REL) | low_side_out | SPEEDUINO-A-15 | Proto area 2 (fan) | low_side_out | corroborated | |
| OEM-E10-31 | ECU power +B (main relay) | power_in | — | — | — | corroborated | |
| OEM-E10-33 | Battery constant (BATT) | power_in | — | — | — | single_source | |
| OEM-E10-4 | Brake switch (STP) | digital_in | — | — | — | single_source | |
| OEM-E10-6 | Malfunction indicator lamp (MIL) | low_side_out | SPEEDUINO-A-38 | VVT | low_side_out | corroborated | |
| OEM-E9-15 | Injector 6 | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | corroborated | |
| OEM-E9-16 | Injector 5 | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | corroborated | |
| OEM-E9-17 | Injector 4 | injector_out | SPEEDUINO-A-5 | Injector 4 | injector_out | corroborated | |
| OEM-E9-18 | Injector 3 | injector_out | SPEEDUINO-A-3 | Injector 3 | injector_out | corroborated | |
| OEM-E9-19 | Injector 2 | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | corroborated | |
| OEM-E9-20 | Injector 1 | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | corroborated | |
| OEM-E9-25 | Camshaft position 2 (G2) | trigger_in | SPEEDUINO-A-26 | VR2- | trigger_in | corroborated | |
| OEM-E9-26 | Camshaft position 1 (G1) | trigger_in | SPEEDUINO-A-24 | Cam input / VR2+ | trigger_in | corroborated | |
| OEM-E9-27 | Crank position (NE) | trigger_in | SPEEDUINO-A-25 | Crank input / VR1+ | trigger_in | corroborated | |
| OEM-E9-32 | ISC stepper winding | low_side_out | — | — | — | corroborated | |
| OEM-E9-33 | ISC stepper winding | low_side_out | — | — | — | corroborated | |
| OEM-E9-34 | ISC stepper winding | low_side_out | — | — | — | corroborated | |
| OEM-E9-35 | ISC stepper winding | low_side_out | — | — | — | corroborated | |
| OEM-E9-4 | Power ground (E11) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-E9-41 | Sensor supply +5V (VCC) | vref | SPEEDUINO-A-13 | 5V | vref | corroborated | |
| OEM-E9-43 | Throttle position (VTA1) | analog_in | SPEEDUINO-A-22 | TPS input | analog_in | corroborated | |
| OEM-E9-44 | Coolant temperature (THW) | temp_in | SPEEDUINO-A-19 | Coolant temp (CLT) | temp_in | corroborated | |
| OEM-E9-45 | Intake air temperature (THA) | temp_in | SPEEDUINO-A-20 | Inlet air temp (IAT) | temp_in | corroborated | |
| OEM-E9-47 | O2 sensor 2 (OX2) | lambda_nb_in | SPEEDUINO-A-21 | O2 sensor | lambda_nb_in | single_source | |
| OEM-E9-48 | O2 sensor 1 (OX1) | lambda_nb_in | — | — | — | corroborated | |
| OEM-E9-49 | Knock sensor 2 (KNK2) | knock_in | — | — | — | corroborated | |
| OEM-E9-5 | Cam sensor 2 ground (G2-) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | corroborated | |
| OEM-E9-50 | Knock sensor 1 (KNK1) | knock_in | — | — | — | corroborated | |
| OEM-E9-52 | Ignition 6 (IGT6) | ignition_out | — | — | — | corroborated | |
| OEM-E9-53 | Ignition 5 (IGT5) | ignition_out | — | — | — | corroborated | |
| OEM-E9-54 | Ignition 4 (IGT4) | ignition_out | SPEEDUINO-A-8 | Ignition 4 | ignition_out | corroborated | |
| OEM-E9-55 | Ignition 3 (IGT3) | ignition_out | SPEEDUINO-A-33 | Ignition 3 | ignition_out | corroborated | |
| OEM-E9-56 | Ignition 2 (IGT2) | ignition_out | SPEEDUINO-A-34 | Ignition 2 | ignition_out | corroborated | |
| OEM-E9-57 | Ignition 1 (IGT1) | ignition_out | SPEEDUINO-A-7 | Ignition 1 | ignition_out | corroborated | |
| OEM-E9-58 | Ignition confirmation (IGF) | digital_in | — | — | — | single_source | |
| OEM-E9-6 | Cam sensor 1 ground (G1-) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | corroborated | |
| OEM-E9-60 | Wastegate VSV (boost control) | low_side_out | — | — | — | single_source | |
| OEM-E9-62 | MAP sensor (PIM) | analog_in | SPEEDUINO-A-11 | MAP sensor (0-5V) | analog_in | single_source | |
| OEM-E9-65 | Sensor ground (E2) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | corroborated | |
| OEM-E9-69 | ECU power ground (E1) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | corroborated | |
| OEM-E9-7 | Crank sensor ground (NE-) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | corroborated | |
| OEM-E9-71 | O2 heater 1 (HT1) | low_side_out | SPEEDUINO-A-36 | Idle 2 (3-wire idle) | low_side_out | single_source | |
| OEM-E9-72 | O2 heater 2 (HT2) | low_side_out | SPEEDUINO-A-35 | Boost | low_side_out | single_source | |
| OEM-E9-73 | Fuel pressure-up VSV (FPU) | low_side_out | — | — | — | single_source | |
| OEM-E9-74 | Purge VSV (EVAP) | low_side_out | — | — | — | single_source | |
| OEM-E9-76 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-E9-78 | Power ground (E01) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-E9-79 | Power ground (E01/E02) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | corroborated | |
| OEM-E9-80 | Power ground (E01/E02) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-E10-31 | SP-14V-1 | 0.85 | no route | ECU power +B (main relay) | — | |
| W2 | OEM-E10-1 | MAIN-R-COIL+ | 0.5 | no route | Ignition switch (IGSW) | — | |
| W3 | NEW-BATT-1 | MAIN-R-IN | 0.85 | no route | Relay contact input (battery + via main fuse) | — | |
| W4 | MAIN-R-COIL- | SP-GND-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W5 | MAIN-R-OUT | SPEEDUINO-PWR-12V | 0.85 | no route | Relay contact output (switched +12V bus) | — | |
| W6 | OEM-E9-4 | SP-GND-1 | 0.85 | no route | Power ground (E11) | — | |
| W7 | OEM-E9-69 | SP-GND-1 | 0.85 | no route | ECU power ground (E1) | — | |
| W8 | OEM-E9-78 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W9 | OEM-E9-79 | SP-GND-1 | 0.85 | no route | Power ground (E01/E02) | — | |
| W10 | OEM-E9-80 | SP-GND-1 | 0.85 | no route | Power ground (E01/E02) | — | |
| W11 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | no route | Ground | — | |
| W12 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | no route | Ground | — | |
| W13 | OEM-E9-5 | SP-0V-1 | 0.5 | no route | Cam sensor 2 ground (G2-) | — | |
| W14 | OEM-E9-6 | SP-0V-1 | 0.5 | no route | Cam sensor 1 ground (G1-) | — | |
| W15 | OEM-E9-65 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W16 | OEM-E9-7 | SP-0V-1 | 0.5 | no route | Crank sensor ground (NE-) | — | |
| W17 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | no route | Ground | — | |
| W18 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | no route | Ground | — | |
| W19 | OEM-E9-41 | SPEEDUINO-A-13 | 0.5 | no route | Sensor supply +5V (VCC) | — | |
| W20 | OEM-E9-27 | SPEEDUINO-A-25 | 0.5 | no route | Crank position (NE) | — | |
| W21 | OEM-E9-26 | SPEEDUINO-A-24 | 0.5 | no route | Camshaft position 1 (G1) | — | |
| W22 | OEM-E9-25 | SPEEDUINO-A-26 | 0.5 | no route | Camshaft position 2 (G2) | — | |
| W23 | OEM-E9-57 | SPEEDUINO-A-7 | 0.5 | no route | Ignition 1 (IGT1) | — | |
| W24 | OEM-E9-56 | SPEEDUINO-A-34 | 0.5 | no route | Ignition 2 (IGT2) | — | |
| W25 | OEM-E9-55 | SPEEDUINO-A-33 | 0.5 | no route | Ignition 3 (IGT3) | — | |
| W26 | OEM-E9-54 | SPEEDUINO-A-8 | 0.5 | no route | Ignition 4 (IGT4) | — | |
| W27 | OEM-E9-20 | SPEEDUINO-A-1 | 0.5 | no route | Injector 1 | — | |
| W28 | OEM-E9-19 | SPEEDUINO-A-2 | 0.5 | no route | Injector 2 | — | |
| W29 | OEM-E9-18 | SPEEDUINO-A-3 | 0.5 | no route | Injector 3 | — | |
| W30 | OEM-E9-17 | SPEEDUINO-A-5 | 0.5 | no route | Injector 4 | — | |
| W31 | OEM-E9-16 | SPEEDUINO-A-1 | 0.5 | no route | Injector 5 | — | |
| W32 | OEM-E9-15 | SPEEDUINO-A-2 | 0.5 | no route | Injector 6 | — | |
| W33 | OEM-E9-62 | SPEEDUINO-A-11 | 0.5 | no route | MAP sensor (PIM) | — | |
| W34 | OEM-E9-43 | SPEEDUINO-A-22 | 0.5 | no route | Throttle position (VTA1) | — | |
| W35 | OEM-E9-44 | SPEEDUINO-A-19 | 0.5 | no route | Coolant temperature (THW) | — | |
| W36 | OEM-E10-23 | SPEEDUINO-A-16 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W37 | OEM-E10-24 | SPEEDUINO-A-15 | 0.5 | no route | Main relay control (M-REL) | — | |
| W38 | OEM-E9-71 | SPEEDUINO-A-36 | 0.5 | no route | O2 heater 1 (HT1) | — | |
| W39 | OEM-E9-72 | SPEEDUINO-A-35 | 0.5 | no route | O2 heater 2 (HT2) | — | |
| W40 | OEM-E10-22 | SPEEDUINO-A-37 | 0.5 | no route | Fuel pump control (FPC) | — | |
| W41 | OEM-E10-6 | SPEEDUINO-A-38 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W42 | OEM-E10-16 | SPEEDUINO-A-17 | 0.5 | no route | Tachometer output | — | |
| W43 | OEM-E9-47 | SPEEDUINO-A-21 | 0.5 | no route | O2 sensor 2 (OX2) | — | |
| W44 | OEM-E9-45 | SPEEDUINO-A-20 | 0.5 | no route | Intake air temperature (THA) | — | |
| W45 | OEM-E10-2 | SPEEDUINO-A-14 | 0.5 | no route | Vehicle speed sensor (SP1) | — | |
| W46 | OEM-E10-21 | SPEEDUINO-A-18 | 0.5 | no route | Fuel pump diagnostic (DI) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (7)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | INJECTOR_BALLAST | Speeduino | The 2JZ-GTE injectors (2JZ-GTE fuel injector) are low-impedance, but Speeduino 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. |
| error | REQUIRED_UNMAPPED | OEM-E9-52 | Required OEM function "Ignition 6 (IGT6)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-E9-53 | Required OEM function "Ignition 5 (IGT5)" (ignition_out) is not connected to the new ECU. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-15 | SPEEDUINO-A-15 "Proto area 2 (fan)" drives OEM-E10-24 Main relay control (M-REL) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-16 | SPEEDUINO-A-16 "Proto area 3 (fuel pump)" drives OEM-E10-23 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-E10-1 ↔ MAIN-R-COIL+ | OEM-E10-1 "Ignition switch (IGSW)" [digital_in] is wired to MAIN-R-COIL+ "Relay coil positive (ignition-switched +12V)" [power_in]. Switched supply used as the ignition-on sense. |
| info | UNMAPPED | OEM | 14 optional OEM pins are not mapped: OEM-E10-15 Electrical load sensor (ELS); OEM-E10-4 Brake switch (STP); OEM-E9-32 ISC stepper winding; OEM-E9-33 ISC stepper winding; OEM-E9-34 ISC stepper winding; OEM-E9-35 ISC stepper winding; OEM-E9-48 O2 sensor 1 (OX1); OEM-E9-49 Knock sensor 2 (KNK2); OEM-E9-50 Knock sensor 1 (KNK1); OEM-E9-58 Ignition confirmation (IGF); OEM-E9-60 Wastegate VSV (boost control); OEM-E9-73 Fuel pressure-up VSV (FPU); OEM-E9-74 Purge VSV (EVAP); OEM-E9-76 Starter signal (STA) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-E10-33 | Battery-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: - Low-impedance injectors need a ballast resistor pack in series with each injector, or an ECU with low-Z / peak-and-hold injector drivers - Trigger pattern for Toyota 2JZ-GTE not found in the ECU's docs (no named 12-tooth JZ decoder; the "Toyota 3 tooth cam" decoder (VVT-i) is in_development) - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 6 injectors: batch / semi-sequential injection Auto-mapped by auto_map() from the library pin data on 2026-10-20. Review every wire against both manuals before building. Open items: - OEM-E9 53: Ignition 5 (IGT5): no free ignition output on Speeduino Speeduino - OEM-E9 52: Ignition 6 (IGT6): no free ignition output on Speeduino Speeduino Not wired: - OEM-E10 33: Battery constant (BATT): Speeduino Speeduino has no battery-constant memory input; not needed - OEM-E9 50: Knock sensor 1 (KNK1): no free knock input on Speeduino Speeduino - OEM-E9 49: Knock sensor 2 (KNK2): no free knock input on Speeduino Speeduino - OEM-E9 32: ISC stepper winding: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 33: ISC stepper winding: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 34: ISC stepper winding: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 35: ISC stepper winding: no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 60: Wastegate VSV (boost control): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 73: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 74: Purge VSV (EVAP): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-E9 48: O2 sensor 1 (OX1): no free o2_narrowband/analog_0_5 on Speeduino Speeduino - OEM-E9 58: Ignition confirmation (IGF): no free frequency_in/switch_in on Speeduino Speeduino - OEM-E10 15: Electrical load sensor (ELS): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-E10 4: Brake switch (STP): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-E9 76: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | ECUMASTER: ECU2JZ JZA80 2JZ-GTE adapter technical information (knock sensor count) | https://drive.google.com/file/d/15sTEetwLt0aKjuQo6aXODn4EBAkEJrtN/view | archive | 2026-10-05 | 6a4adabba0f5 |
| 4 | vendor_doc | Emtron SL4/SL6/SL8 pinout pages | https://docs.emtronaustralia.com.au/engine-management/wiring/index.html | archive | 2026-10-05 | e52b3da9996a |
| 4 | vendor_doc | Link SupraLink TS2JZX install manual (JZA80 2JZ-GTE non-VVT) | https://linkecu.com/documentation/TS2JZX.pdf | — | — | — |
| 4 | vendor_doc | Speeduino Manual (08/04/25) — V0.4 board IDC40 pinout & features | https://speeduino.com/Speeduino_manual.pdf | archive | 2026-10-05 | 21806bd29ef0 |
| 4 | vendor_doc | Speeduino wiki — V0.4 board & wiring (12v input, switched power) | https://wiki.speeduino.com/en/boards/V04 | — | — | — |
| 4 | service_manual | Toyota FSM P1300 Igniter Circuit (2JZ-GTE) — IGT1-6 / IGF ECM terminals | http://97supraturbo.com/Trouble%20Codes/P1300%20Ignitor.pdf | — | — | — |
| 3 | forum | rusEFI Mazda Miata 2002 engine wiring | https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2002 | archive | 2026-10-05 | cc3cae670408 |