Toyota Supra A80 1997-2002 JDM (2JZ-GTE VVT-i, single-turbo) → Speeduino Speeduino v0.4 (auto)
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 | 4: read the Findings page before cutting any wire |
| Size of the job | 47 wires · 13 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-B78-16 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-B78-7 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-B78-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-B78-9 | MAIN-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | NEW-BATT-1 | MAIN-R-IN | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | MAIN-R-COIL- | SP-GND-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | MAIN-R-OUT | SPEEDUINO-PWR-12V | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-B74-21 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-B74-31 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-B74-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-B75-17 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-B74-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-B75-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-B75-19 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-B78-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-B75-2 | SPEEDUINO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-B74-23 | SPEEDUINO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-B74-10 | SPEEDUINO-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-B74-11 | SPEEDUINO-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-B74-12 | SPEEDUINO-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-B74-13 | SPEEDUINO-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B75-5 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B75-6 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B74-1 | SPEEDUINO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B74-2 | SPEEDUINO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B74-3 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-B74-4 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-B74-7 | SPEEDUINO-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-B74-8 | SPEEDUINO-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B74-17 | SPEEDUINO-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B74-18 | SPEEDUINO-A-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B74-19 | SPEEDUINO-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B74-20 | SPEEDUINO-A-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B75-9 | SPEEDUINO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B75-15 | SPEEDUINO-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B75-14 | SPEEDUINO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-B77-13 | SPEEDUINO-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-B78-10 | SPEEDUINO-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-B77-20 | SPEEDUINO-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-B75-12 | SPEEDUINO-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B75-22 | SPEEDUINO-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-B77-25 | SPEEDUINO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-B76-11 | 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) | power ground must not touch +12 V supply | |
| 2 | MAIN-R-COIL- | MAIN-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 3 | MAIN-R-COIL- | NEW-BATT-1 | open (OL) | power ground must not touch +12 V supply | |
| 4 | MAIN-R-COIL- | OEM-B78-16 | open (OL) | power ground must not touch +12 V supply | |
| 5 | MAIN-R-COIL- | SPEEDUINO-A-13 | open (OL) | power ground must not touch 5 V sensor reference | |
| 6 | SPEEDUINO-A-12 | MAIN-R-COIL+ | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | SPEEDUINO-A-12 | MAIN-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 8 | SPEEDUINO-A-12 | NEW-BATT-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 9 | SPEEDUINO-A-12 | OEM-B78-16 | open (OL) | sensor ground must not touch +12 V supply | |
| 10 | SPEEDUINO-A-12 | SPEEDUINO-A-13 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 11 | SPEEDUINO-A-13 | MAIN-R-COIL+ | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 12 | SPEEDUINO-A-13 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 13 | SPEEDUINO-A-13 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 14 | SPEEDUINO-A-13 | OEM-B78-16 | 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) | — | W4 | — | 0.5 | OEM-B78-9 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W6 | — | 0.5 | SP-GND-1 | — | — | — |
| IN | Relay contact input (battery + via main fuse) | — | W5 | — | 0.85 | NEW-BATT-1 | — | — | — |
| OUT | Relay contact output (switched +12V bus) | — | W7 | — | 0.85 | SPEEDUINO-PWR-12V | — | — | — |
NEW-BATT
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | MAIN-R-IN | — | — | — |
OEM-B74
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 3 (#30) | — | W28 | — | 0.5 | SPEEDUINO-A-3 | — | — | — |
| 10 | Cam position (G2) | — | W22 | — | 0.5 | SPEEDUINO-A-24 | — | — | — |
| 11 | Ignition 1 (IGT, cyl 1&6) | — | W23 | — | 0.5 | SPEEDUINO-A-7 | — | — | — |
| 12 | Ignition 2 (IGT2, cyl 5&2) | — | W24 | — | 0.5 | SPEEDUINO-A-34 | — | — | — |
| 13 | Ignition 3 (IGT3, cyl 3&4) | — | W25 | — | 0.5 | SPEEDUINO-A-33 | — | — | — |
| 15 | Wastegate VSV (PMC) | — | — | — | — | — | — | — | — |
| 17 | VVT-i OCV - (OCV-) | — | W34 | — | 0.5 | SPEEDUINO-A-15 | — | — | — |
| 18 | VVT-i OCV + (OCV+) | — | W35 | — | 0.5 | SPEEDUINO-A-36 | — | — | — |
| 19 | ETCS-i clutch - (CL-) | — | W36 | — | 0.5 | SPEEDUINO-A-35 | — | — | — |
| 2 | Injector 4 (#40) | — | W29 | — | 0.5 | SPEEDUINO-A-5 | — | — | — |
| 20 | ETCS-i clutch + (CL+) | — | W37 | — | 0.5 | SPEEDUINO-A-37 | — | — | — |
| 21 | Power ground (E01) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Crank/cam sensor return (NE-) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Crank position (NE+) | — | W21 | — | 0.5 | SPEEDUINO-A-25 | — | — | — |
| 24 | Neutral/park switch (NSW) | — | — | — | — | — | — | — | — |
| 25 | Igniter verification (IGF) | — | — | — | — | — | — | — | — |
| 27 | Knock sensor 2 (KNK2, rear) | — | — | — | — | — | — | — | — |
| 28 | Knock sensor 1 (KNK1, front) | — | — | — | — | — | — | — | — |
| 3 | Injector 5 (#50) | — | W30 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 30 | ETCS-i motor shield (GEO1) | — | — | — | — | — | — | — | — |
| 31 | Power ground (E02) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 4 | Injector 6 (#60) | — | W31 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 5 | Intake air bypass VSV (VSV1) | — | — | — | — | — | — | — | — |
| 7 | ETCS-i motor − (M−) | — | W32 | — | 0.5 | SPEEDUINO-A-32 | — | — | — |
| 8 | ETCS-i motor + (M+) | — | W33 | — | 0.5 | SPEEDUINO-A-31 | — | — | — |
| 9 | ETCS-i ground (ME01) | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-B75
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Mass air flow (VG) | — | — | — | — | — | — | — | — |
| 12 | O2 sensor (OX) | — | W44 | — | 0.5 | SPEEDUINO-A-21 | — | — | — |
| 14 | Coolant temperature (THW) | — | W40 | — | 0.5 | SPEEDUINO-A-19 | — | — | — |
| 15 | Accelerator pedal 1 (VPA) | — | W39 | — | 0.5 | SPEEDUINO-A-22 | — | — | — |
| 16 | Accelerator pedal 2 (VPA2) | — | — | — | — | — | — | — | — |
| 17 | Power ground (E1) | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Sensor ground (E2) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | MAF ground (EVG) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Sensor power (VC) | — | W20 | — | 0.5 | SPEEDUINO-A-13 | — | — | — |
| 20 | A/T 2nd-gear indicator (2) | — | — | — | — | — | — | — | — |
| 21 | A/T 1st-gear indicator (L) | — | — | — | — | — | — | — | — |
| 22 | Intake air temperature (THA) | — | W45 | — | 0.5 | SPEEDUINO-A-20 | — | — | — |
| 23 | Throttle position 1 (VTA) | — | — | — | — | — | — | — | — |
| 24 | Throttle position 2 (VTA2) | — | — | — | — | — | — | — | — |
| 3 | Exhaust gas control VSV (VSV2) | — | — | — | — | — | — | — | — |
| 4 | O2 sensor heater (HT) | — | — | — | — | — | — | — | — |
| 5 | Injector 1 (#10) | — | W26 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 6 | Injector 2 (#20) | — | W27 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 7 | EVAP purge VSV (PRG) | — | — | — | — | — | — | — | — |
| 8 | Main oil pressure switch (MOPS) | — | — | — | — | — | — | — | — |
| 9 | Manifold pressure (PIM) | — | W38 | — | 0.5 | SPEEDUINO-A-11 | — | — | — |
OEM-B76
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/T shift solenoid 1 (S1) | — | — | — | — | — | — | — | — |
| 10 | OD direct-clutch speed (NCO-) | — | — | — | — | — | — | — | — |
| 11 | No.2 speed sensor return (SP2-) | — | W47 | — | 0.5 | SPEEDUINO-A-18 | — | — | — |
| 12 | Exhaust bypass VSV (VSV3) | — | — | — | — | — | — | — | — |
| 13 | A/T lock-up solenoid - (SLU-) | — | — | — | — | — | — | — | — |
| 14 | A/T accumulator solenoid - (SLN-) | — | — | — | — | — | — | — | — |
| 15 | A/T line-pressure solenoid - (SLT-) | — | — | — | — | — | — | — | — |
| 16 | Fuel pressure-up VSV (FPU) | — | — | — | — | — | — | — | — |
| 17 | A/T oil temperature (OIL) | — | — | — | — | — | — | — | — |
| 2 | A/T shift solenoid 2 (S2) | — | — | — | — | — | — | — | — |
| 3 | A/T shift solenoid 3 (S3) | — | — | — | — | — | — | — | — |
| 4 | OD direct-clutch speed (NCO+) | — | — | — | — | — | — | — | — |
| 5 | No.2 speed sensor (SP2+) | — | — | — | — | — | — | — | — |
| 6 | A/T shift solenoid 4 (S4) | — | — | — | — | — | — | — | — |
| 7 | A/T lock-up solenoid + (SLU+) | — | — | — | — | — | — | — | — |
| 8 | A/T accumulator solenoid + (SLN+) | — | — | — | — | — | — | — | — |
| 9 | A/T line-pressure solenoid + (SLT+) | — | — | — | — | — | — | — | — |
OEM-B77
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A/C request (AC) | — | — | — | — | — | — | — | — |
| 13 | A/C clutch relay (ACMG) | — | W41 | — | 0.5 | SPEEDUINO-A-16 | — | — | — |
| 14 | A/T shift down (SFTD) | — | — | — | — | — | — | — | — |
| 16 | A/T reverse indicator (R) | — | — | — | — | — | — | — | — |
| 18 | Rear right wheel speed (RRO) | — | — | — | — | — | — | — | — |
| 19 | Rear left wheel speed (RLO) | — | — | — | — | — | — | — | — |
| 2 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 20 | Tachometer output (TACH) | — | W43 | — | 0.5 | SPEEDUINO-A-17 | — | — | — |
| 21 | ABS active (ABS) | — | — | — | — | — | — | — | — |
| 25 | No.1 speed sensor (SPD) | — | W46 | — | 0.5 | SPEEDUINO-A-14 | — | — | — |
| 26 | Electrical load sense (ELS) | — | — | — | — | — | — | — | — |
| 27 | Road speed (RSPD) | — | — | — | — | — | — | — | — |
| 4 | A/T shift up (SFTU) | — | — | — | — | — | — | — | — |
| 5 | Diagnostic/timing check (TC) | — | — | — | — | — | — | — | — |
| 6 | Stop light switch (STP) | — | — | — | — | — | — | — | — |
| 7 | A/T manual position (3) | — | — | — | — | — | — | — | — |
OEM-B78
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery constant (BATT) | — | — | — | — | — | — | — | — |
| 10 | EFI main relay control (M-REL) | — | W42 | — | 0.5 | SPEEDUINO-A-38 | — | — | — |
| 11 | Serial diagnostic (SIL) | — | — | — | — | — | — | — | — |
| 16 | EFI main relay power (+B) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | TRAC snow-mode light (SNOW) | — | — | — | — | — | — | — | — |
| 22 | Switch ground (EC) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | TRAC snow-mode switch (SNWI) | — | — | — | — | — | — | — | — |
| 4 | Fuel pump diagnostic (DI) | — | — | — | — | — | — | — | — |
| 5 | Fuel pump control (FPC) | — | — | — | — | — | — | — | — |
| 6 | Check-engine light (W) | — | — | — | — | — | — | — | — |
| 7 | ETCS-i power (+BM) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 8 | EFI main relay power (+B2) | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Ignition switch (IGSW) | — | W4 | — | 0.5 | MAIN-R-COIL+ | — | — | — |
OEM-B79
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | TRAC enable light (IND) | — | — | — | — | — | — | — | — |
| 14 | TRAC active light (CIND) | — | — | — | — | — | — | — | — |
| 17 | A/T meter LCD (LPO3) | — | — | — | — | — | — | — | — |
| 18 | A/T meter LCD (SPTL) | — | — | — | — | — | — | — | — |
| 19 | Reverse buzzer (BZ) | — | — | — | — | — | — | — | — |
| 2 | TRAC off switch (MSW) | — | — | — | — | — | — | — | — |
| 3 | A/T meter LCD (LPO1) | — | — | — | — | — | — | — | — |
| 4 | A/T meter LCD (LPO2) | — | — | — | — | — | — | — | — |
| 7 | Front right wheel speed (FRO) | — | — | — | — | — | — | — | — |
| 8 | Front left wheel speed (FLO) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-B74-22 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-B75-18 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-B75-19 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-B78-22 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | SPEEDUINO-A-12 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | SPEEDUINO-A-23 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-B78-16 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-B78-7 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-B78-8 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.5 | MAIN-R-COIL- | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B74-21 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-B74-31 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-B74-9 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | OEM-B75-17 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | SPEEDUINO-A-10 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | SPEEDUINO-A-9 | — | — | — |
SPEEDUINO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W26 | — | 0.5 | OEM-B75-5 | — | — | — |
| 1 | Injector 1 | — | W30 | — | 0.5 | OEM-B74-3 | — | — | — |
| 10 | Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | MAP sensor (0-5V) | — | W38 | — | 0.5 | OEM-B75-9 | — | — | — |
| 12 | Ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | 5V | — | W20 | — | 0.5 | OEM-B75-2 | — | — | — |
| 14 | Proto area 1 (flex fuel) | — | W46 | — | 0.5 | OEM-B77-25 | — | — | — |
| 15 | Proto area 2 (fan) | — | W34 | — | 0.5 | OEM-B74-17 | — | — | — |
| 16 | Proto area 3 (fuel pump) | — | W41 | — | 0.5 | OEM-B77-13 | — | — | — |
| 17 | Proto area 4 (tachometer) | — | W43 | — | 0.5 | OEM-B77-20 | — | — | — |
| 18 | Proto area 5 (clutch) | — | W47 | — | 0.5 | OEM-B76-11 | — | — | — |
| 19 | Coolant temp (CLT) | — | W40 | — | 0.5 | OEM-B75-14 | — | — | — |
| 2 | Injector 2 | — | W27 | — | 0.5 | OEM-B75-6 | — | — | — |
| 2 | Injector 2 | — | W31 | — | 0.5 | OEM-B74-4 | — | — | — |
| 20 | Inlet air temp (IAT) | — | W45 | — | 0.5 | OEM-B75-22 | — | — | — |
| 21 | O2 sensor | — | W44 | — | 0.5 | OEM-B75-12 | — | — | — |
| 22 | TPS input | — | W39 | — | 0.5 | OEM-B75-15 | — | — | — |
| 23 | Ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Cam input / VR2+ | — | W22 | — | 0.5 | OEM-B74-10 | — | — | — |
| 25 | Crank input / VR1+ | — | W21 | — | 0.5 | OEM-B74-23 | — | — | — |
| 26 | VR2- | — | — | — | — | — | — | — | — |
| 27 | VR1- | — | — | — | — | — | — | — | — |
| 28 | 5V | — | — | — | — | — | — | — | — |
| 29 | Idle stepper 2B | — | — | — | — | — | — | — | — |
| 3 | Injector 3 | — | W28 | — | 0.5 | OEM-B74-1 | — | — | — |
| 30 | Idle stepper 2A | — | — | — | — | — | — | — | — |
| 31 | Idle stepper 1A | — | W33 | — | 0.5 | OEM-B74-8 | — | — | — |
| 32 | Idle stepper 1B | — | W32 | — | 0.5 | OEM-B74-7 | — | — | — |
| 33 | Ignition 3 | — | W25 | — | 0.5 | OEM-B74-13 | — | — | — |
| 34 | Ignition 2 | — | W24 | — | 0.5 | OEM-B74-12 | — | — | — |
| 35 | Boost | — | W36 | — | 0.5 | OEM-B74-19 | — | — | — |
| 36 | Idle 2 (3-wire idle) | — | W35 | — | 0.5 | OEM-B74-18 | — | — | — |
| 37 | PWM idle | — | W37 | — | 0.5 | OEM-B74-20 | — | — | — |
| 38 | VVT | — | W42 | — | 0.5 | OEM-B78-10 | — | — | — |
| 5 | Injector 4 | — | W29 | — | 0.5 | OEM-B74-2 | — | — | — |
| 7 | Ignition 1 | — | W23 | — | 0.5 | OEM-B74-11 | — | — | — |
| 8 | Ignition 4 | — | — | — | — | — | — | — | — |
| 9 | Ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
SPEEDUINO-PWR
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 12V | Main power (+12 V switched) | — | W7 | — | 0.85 | MAIN-R-OUT | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-B74-1 | Injector 3 (#30) | injector_out | SPEEDUINO-A-3 | Injector 3 | injector_out | single_source | |
| OEM-B74-10 | Cam position (G2) | trigger_in | SPEEDUINO-A-24 | Cam input / VR2+ | trigger_in | single_source | |
| OEM-B74-11 | Ignition 1 (IGT, cyl 1&6) | ignition_out | SPEEDUINO-A-7 | Ignition 1 | ignition_out | single_source | |
| OEM-B74-12 | Ignition 2 (IGT2, cyl 5&2) | ignition_out | SPEEDUINO-A-34 | Ignition 2 | ignition_out | single_source | |
| OEM-B74-13 | Ignition 3 (IGT3, cyl 3&4) | ignition_out | SPEEDUINO-A-33 | Ignition 3 | ignition_out | single_source | |
| OEM-B74-15 | Wastegate VSV (PMC) | low_side_out | — | — | — | single_source | |
| OEM-B74-17 | VVT-i OCV - (OCV-) | low_side_out | SPEEDUINO-A-15 | Proto area 2 (fan) | low_side_out | single_source | |
| OEM-B74-18 | VVT-i OCV + (OCV+) | low_side_out | SPEEDUINO-A-36 | Idle 2 (3-wire idle) | low_side_out | single_source | |
| OEM-B74-19 | ETCS-i clutch - (CL-) | low_side_out | SPEEDUINO-A-35 | Boost | low_side_out | single_source | |
| OEM-B74-2 | Injector 4 (#40) | injector_out | SPEEDUINO-A-5 | Injector 4 | injector_out | single_source | |
| OEM-B74-20 | ETCS-i clutch + (CL+) | low_side_out | SPEEDUINO-A-37 | PWM idle | low_side_out | single_source | |
| OEM-B74-21 | 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-B74-22 | Crank/cam sensor return (NE-) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B74-23 | Crank position (NE+) | trigger_in | SPEEDUINO-A-25 | Crank input / VR1+ | trigger_in | single_source | |
| OEM-B74-24 | Neutral/park switch (NSW) | digital_in | — | — | — | single_source | |
| OEM-B74-25 | Igniter verification (IGF) | digital_in | — | — | — | single_source | |
| OEM-B74-27 | Knock sensor 2 (KNK2, rear) | knock_in | — | — | — | single_source | |
| OEM-B74-28 | Knock sensor 1 (KNK1, front) | knock_in | — | — | — | single_source | |
| OEM-B74-3 | Injector 5 (#50) | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-B74-30 | ETCS-i motor shield (GEO1) | shield | — | — | — | single_source | |
| OEM-B74-31 | Power ground (E02) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-B74-4 | Injector 6 (#60) | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-B74-5 | Intake air bypass VSV (VSV1) | low_side_out | — | — | — | single_source | |
| OEM-B74-7 | ETCS-i motor − (M−) | hbridge_out | SPEEDUINO-A-32 | Idle stepper 1B | hbridge_out | single_source | |
| OEM-B74-8 | ETCS-i motor + (M+) | hbridge_out | SPEEDUINO-A-31 | Idle stepper 1A | hbridge_out | single_source | |
| OEM-B74-9 | ETCS-i ground (ME01) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-B75-10 | Mass air flow (VG) | analog_in | — | — | — | single_source | |
| OEM-B75-12 | O2 sensor (OX) | lambda_nb_in | SPEEDUINO-A-21 | O2 sensor | lambda_nb_in | single_source | |
| OEM-B75-14 | Coolant temperature (THW) | temp_in | SPEEDUINO-A-19 | Coolant temp (CLT) | temp_in | single_source | |
| OEM-B75-15 | Accelerator pedal 1 (VPA) | analog_in | SPEEDUINO-A-22 | TPS input | analog_in | single_source | |
| OEM-B75-16 | Accelerator pedal 2 (VPA2) | analog_in | — | — | — | single_source | |
| OEM-B75-17 | Power ground (E1) | ground | MAIN-R-COIL- + SPEEDUINO-A-10 + SPEEDUINO-A-9 | Relay coil negative (ECU low-side driver) + Ground + Ground | ground + load | single_source | |
| OEM-B75-18 | Sensor ground (E2) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B75-19 | MAF ground (EVG) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B75-2 | Sensor power (VC) | vref | SPEEDUINO-A-13 | 5V | vref | single_source | |
| OEM-B75-20 | A/T 2nd-gear indicator (2) | digital_in | — | — | — | single_source | |
| OEM-B75-21 | A/T 1st-gear indicator (L) | digital_in | — | — | — | single_source | |
| OEM-B75-22 | Intake air temperature (THA) | temp_in | SPEEDUINO-A-20 | Inlet air temp (IAT) | temp_in | single_source | |
| OEM-B75-23 | Throttle position 1 (VTA) | analog_in | — | — | — | single_source | |
| OEM-B75-24 | Throttle position 2 (VTA2) | analog_in | — | — | — | single_source | |
| OEM-B75-3 | Exhaust gas control VSV (VSV2) | low_side_out | — | — | — | single_source | |
| OEM-B75-4 | O2 sensor heater (HT) | low_side_out | — | — | — | single_source | |
| OEM-B75-5 | Injector 1 (#10) | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-B75-6 | Injector 2 (#20) | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-B75-7 | EVAP purge VSV (PRG) | low_side_out | — | — | — | single_source | |
| OEM-B75-8 | Main oil pressure switch (MOPS) | digital_in | — | — | — | single_source | |
| OEM-B75-9 | Manifold pressure (PIM) | analog_in | SPEEDUINO-A-11 | MAP sensor (0-5V) | analog_in | single_source | |
| OEM-B76-1 | A/T shift solenoid 1 (S1) | low_side_out | — | — | — | single_source | |
| OEM-B76-10 | OD direct-clutch speed (NCO-) | digital_in | — | — | — | single_source | |
| OEM-B76-11 | No.2 speed sensor return (SP2-) | digital_in | SPEEDUINO-A-18 | Proto area 5 (clutch) | digital_in | single_source | |
| OEM-B76-12 | Exhaust bypass VSV (VSV3) | low_side_out | — | — | — | single_source | |
| OEM-B76-13 | A/T lock-up solenoid - (SLU-) | low_side_out | — | — | — | single_source | |
| OEM-B76-14 | A/T accumulator solenoid - (SLN-) | low_side_out | — | — | — | single_source | |
| OEM-B76-15 | A/T line-pressure solenoid - (SLT-) | low_side_out | — | — | — | single_source | |
| OEM-B76-16 | Fuel pressure-up VSV (FPU) | low_side_out | — | — | — | single_source | |
| OEM-B76-17 | A/T oil temperature (OIL) | temp_in | — | — | — | single_source | |
| OEM-B76-2 | A/T shift solenoid 2 (S2) | low_side_out | — | — | — | single_source | |
| OEM-B76-3 | A/T shift solenoid 3 (S3) | low_side_out | — | — | — | single_source | |
| OEM-B76-4 | OD direct-clutch speed (NCO+) | digital_in | — | — | — | single_source | |
| OEM-B76-5 | No.2 speed sensor (SP2+) | digital_in | — | — | — | single_source | |
| OEM-B76-6 | A/T shift solenoid 4 (S4) | low_side_out | — | — | — | single_source | |
| OEM-B76-7 | A/T lock-up solenoid + (SLU+) | low_side_out | — | — | — | single_source | |
| OEM-B76-8 | A/T accumulator solenoid + (SLN+) | low_side_out | — | — | — | single_source | |
| OEM-B76-9 | A/T line-pressure solenoid + (SLT+) | low_side_out | — | — | — | single_source | |
| OEM-B77-1 | A/C request (AC) | digital_in | — | — | — | single_source | |
| OEM-B77-13 | A/C clutch relay (ACMG) | low_side_out | SPEEDUINO-A-16 | Proto area 3 (fuel pump) | low_side_out | single_source | |
| OEM-B77-14 | A/T shift down (SFTD) | digital_in | — | — | — | single_source | |
| OEM-B77-16 | A/T reverse indicator (R) | digital_in | — | — | — | single_source | |
| OEM-B77-18 | Rear right wheel speed (RRO) | digital_in | — | — | — | single_source | |
| OEM-B77-19 | Rear left wheel speed (RLO) | digital_in | — | — | — | single_source | |
| OEM-B77-2 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-B77-20 | Tachometer output (TACH) | tacho_out | SPEEDUINO-A-17 | Proto area 4 (tachometer) | tacho_out | single_source | |
| OEM-B77-21 | ABS active (ABS) | digital_in | — | — | — | single_source | |
| OEM-B77-25 | No.1 speed sensor (SPD) | digital_in | SPEEDUINO-A-14 | Proto area 1 (flex fuel) | digital_in | single_source | |
| OEM-B77-26 | Electrical load sense (ELS) | digital_in | — | — | — | single_source | |
| OEM-B77-27 | Road speed (RSPD) | digital_in | — | — | — | single_source | |
| OEM-B77-4 | A/T shift up (SFTU) | digital_in | — | — | — | single_source | |
| OEM-B77-5 | Diagnostic/timing check (TC) | digital_in | — | — | — | single_source | |
| OEM-B77-6 | Stop light switch (STP) | digital_in | — | — | — | single_source | |
| OEM-B77-7 | A/T manual position (3) | digital_in | — | — | — | single_source | |
| OEM-B78-1 | Battery constant (BATT) | power_in | — | — | — | single_source | |
| OEM-B78-10 | EFI main relay control (M-REL) | low_side_out | SPEEDUINO-A-38 | VVT | low_side_out | single_source | |
| OEM-B78-11 | Serial diagnostic (SIL) | serial | — | — | — | single_source | |
| OEM-B78-16 | EFI main relay power (+B) | power_in | — | — | — | single_source | |
| OEM-B78-2 | TRAC snow-mode light (SNOW) | low_side_out | — | — | — | single_source | |
| OEM-B78-22 | Switch ground (EC) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B78-3 | TRAC snow-mode switch (SNWI) | digital_in | — | — | — | single_source | |
| OEM-B78-4 | Fuel pump diagnostic (DI) | digital_in | — | — | — | single_source | |
| OEM-B78-5 | Fuel pump control (FPC) | low_side_out | — | — | — | single_source | |
| OEM-B78-6 | Check-engine light (W) | low_side_out | — | — | — | single_source | |
| OEM-B78-7 | ETCS-i power (+BM) | power_in | — | — | — | single_source | |
| OEM-B78-8 | EFI main relay power (+B2) | power_in | — | — | — | single_source | |
| OEM-B78-9 | Ignition switch (IGSW) | digital_in | MAIN-R-COIL+ | Relay coil positive (ignition-switched +12V) | power_in | single_source | |
| OEM-B79-1 | TRAC enable light (IND) | low_side_out | — | — | — | single_source | |
| OEM-B79-14 | TRAC active light (CIND) | low_side_out | — | — | — | single_source | |
| OEM-B79-17 | A/T meter LCD (LPO3) | low_side_out | — | — | — | single_source | |
| OEM-B79-18 | A/T meter LCD (SPTL) | low_side_out | — | — | — | single_source | |
| OEM-B79-19 | Reverse buzzer (BZ) | low_side_out | — | — | — | single_source | |
| OEM-B79-2 | TRAC off switch (MSW) | digital_in | — | — | — | single_source | |
| OEM-B79-3 | A/T meter LCD (LPO1) | low_side_out | — | — | — | single_source | |
| OEM-B79-4 | A/T meter LCD (LPO2) | low_side_out | — | — | — | single_source | |
| OEM-B79-7 | Front right wheel speed (FRO) | digital_in | — | — | — | single_source | |
| OEM-B79-8 | Front left wheel speed (FLO) | digital_in | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-B78-16 | SP-14V-1 | 0.85 | no route | EFI main relay power (+B) | — | |
| W2 | OEM-B78-7 | SP-14V-1 | 0.85 | no route | ETCS-i power (+BM) | — | |
| W3 | OEM-B78-8 | SP-14V-1 | 0.85 | no route | EFI main relay power (+B2) | — | |
| W4 | OEM-B78-9 | MAIN-R-COIL+ | 0.5 | no route | Ignition switch (IGSW) | — | |
| W5 | NEW-BATT-1 | MAIN-R-IN | 0.85 | no route | Relay contact input (battery + via main fuse) | — | |
| W6 | MAIN-R-COIL- | SP-GND-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W7 | MAIN-R-OUT | SPEEDUINO-PWR-12V | 0.85 | no route | Relay contact output (switched +12V bus) | — | |
| W8 | OEM-B74-21 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W9 | OEM-B74-31 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W10 | OEM-B74-9 | SP-GND-1 | 0.85 | no route | ETCS-i ground (ME01) | — | |
| W11 | OEM-B75-17 | SP-GND-1 | 0.85 | no route | Power ground (E1) | — | |
| W12 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | no route | Ground | — | |
| W13 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | no route | Ground | — | |
| W14 | OEM-B74-22 | SP-0V-1 | 0.5 | no route | Crank/cam sensor return (NE-) | — | |
| W15 | OEM-B75-18 | SP-0V-1 | 0.5 | no route | Sensor ground (E2) | — | |
| W16 | OEM-B75-19 | SP-0V-1 | 0.5 | no route | MAF ground (EVG) | — | |
| W17 | OEM-B78-22 | SP-0V-1 | 0.5 | no route | Switch ground (EC) | — | |
| W18 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | no route | Ground | — | |
| W19 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | no route | Ground | — | |
| W20 | OEM-B75-2 | SPEEDUINO-A-13 | 0.5 | no route | Sensor power (VC) | — | |
| W21 | OEM-B74-23 | SPEEDUINO-A-25 | 0.5 | no route | Crank position (NE+) | — | |
| W22 | OEM-B74-10 | SPEEDUINO-A-24 | 0.5 | no route | Cam position (G2) | — | |
| W23 | OEM-B74-11 | SPEEDUINO-A-7 | 0.5 | no route | Ignition 1 (IGT, cyl 1&6) | — | |
| W24 | OEM-B74-12 | SPEEDUINO-A-34 | 0.5 | no route | Ignition 2 (IGT2, cyl 5&2) | — | |
| W25 | OEM-B74-13 | SPEEDUINO-A-33 | 0.5 | no route | Ignition 3 (IGT3, cyl 3&4) | — | |
| W26 | OEM-B75-5 | SPEEDUINO-A-1 | 0.5 | no route | Injector 1 (#10) | — | |
| W27 | OEM-B75-6 | SPEEDUINO-A-2 | 0.5 | no route | Injector 2 (#20) | — | |
| W28 | OEM-B74-1 | SPEEDUINO-A-3 | 0.5 | no route | Injector 3 (#30) | — | |
| W29 | OEM-B74-2 | SPEEDUINO-A-5 | 0.5 | no route | Injector 4 (#40) | — | |
| W30 | OEM-B74-3 | SPEEDUINO-A-1 | 0.5 | no route | Injector 5 (#50) | — | |
| W31 | OEM-B74-4 | SPEEDUINO-A-2 | 0.5 | no route | Injector 6 (#60) | — | |
| W32 | OEM-B74-7 | SPEEDUINO-A-32 | 0.5 | no route | ETCS-i motor − (M−) | — | |
| W33 | OEM-B74-8 | SPEEDUINO-A-31 | 0.5 | no route | ETCS-i motor + (M+) | — | |
| W34 | OEM-B74-17 | SPEEDUINO-A-15 | 0.5 | no route | VVT-i OCV - (OCV-) | — | |
| W35 | OEM-B74-18 | SPEEDUINO-A-36 | 0.5 | no route | VVT-i OCV + (OCV+) | — | |
| W36 | OEM-B74-19 | SPEEDUINO-A-35 | 0.5 | no route | ETCS-i clutch - (CL-) | — | |
| W37 | OEM-B74-20 | SPEEDUINO-A-37 | 0.5 | no route | ETCS-i clutch + (CL+) | — | |
| W38 | OEM-B75-9 | SPEEDUINO-A-11 | 0.5 | no route | Manifold pressure (PIM) | — | |
| W39 | OEM-B75-15 | SPEEDUINO-A-22 | 0.5 | no route | Accelerator pedal 1 (VPA) | — | |
| W40 | OEM-B75-14 | SPEEDUINO-A-19 | 0.5 | no route | Coolant temperature (THW) | — | |
| W41 | OEM-B77-13 | SPEEDUINO-A-16 | 0.5 | no route | A/C clutch relay (ACMG) | — | |
| W42 | OEM-B78-10 | SPEEDUINO-A-38 | 0.5 | no route | EFI main relay control (M-REL) | — | |
| W43 | OEM-B77-20 | SPEEDUINO-A-17 | 0.5 | no route | Tachometer output (TACH) | — | |
| W44 | OEM-B75-12 | SPEEDUINO-A-21 | 0.5 | no route | O2 sensor (OX) | — | |
| W45 | OEM-B75-22 | SPEEDUINO-A-20 | 0.5 | no route | Intake air temperature (THA) | — | |
| W46 | OEM-B77-25 | SPEEDUINO-A-14 | 0.5 | no route | No.1 speed sensor (SPD) | — | |
| W47 | OEM-B76-11 | SPEEDUINO-A-18 | 0.5 | no route | No.2 speed sensor return (SP2-) | — |
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 (10)
| 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-B75-16 | Required OEM function "Accelerator pedal 2 (VPA2)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B75-23 | Required OEM function "Throttle position 1 (VTA)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B75-24 | Required OEM function "Throttle position 2 (VTA2)" (analog_in) is not connected to the new ECU. |
| warn | DBW_MOTOR_CURRENT | SPEEDUINO-A-31 | Cannot confirm Speeduino can drive the throttle motor: neither the motor stall current (OEM-B74-8) nor the peak rating of SPEEDUINO-A-31 "Idle stepper 1A" is known. |
| warn | DBW_MOTOR_CURRENT | SPEEDUINO-A-32 | Cannot confirm Speeduino can drive the throttle motor: neither the motor stall current (OEM-B74-7) nor the peak rating of SPEEDUINO-A-32 "Idle stepper 1B" is known. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-16 | SPEEDUINO-A-16 "Proto area 3 (fuel pump)" drives OEM-B77-13 A/C clutch relay (ACMG) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-38 | SPEEDUINO-A-38 "VVT" drives OEM-B78-10 EFI main relay control (M-REL) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-B78-9 ↔ MAIN-R-COIL+ | OEM-B78-9 "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 | 59 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-B75-20 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-B76-12 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-B77-14 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-B77-21 ABS active (ABS); 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-B78-11 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)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-B78-1 | 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 - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - 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-B75 23: Throttle position 1 (VTA): no free tps/analog_0_5 on Speeduino Speeduino - OEM-B75 16: Accelerator pedal 2 (VPA2): no free tps/analog_0_5 on Speeduino Speeduino - OEM-B75 24: Throttle position 2 (VTA2): no free tps/analog_0_5 on Speeduino Speeduino Not wired: - OEM-B78 1: Battery constant (BATT): Speeduino Speeduino has no battery-constant memory input; not needed - OEM-B74 28: Knock sensor 1 (KNK1, front): no free knock input on Speeduino Speeduino - OEM-B74 27: Knock sensor 2 (KNK2, rear): no free knock input on Speeduino Speeduino - OEM-B74 30: ETCS-i motor shield (GEO1): no shield pin on Speeduino Speeduino - OEM-B75 4: O2 sensor heater (HT): no free heater_low_side/low_side/relay_control/ls_hs/injector on Speeduino Speeduino - OEM-B76 1: A/T shift solenoid 1 (S1): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 2: A/T shift solenoid 2 (S2): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 3: A/T shift solenoid 3 (S3): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 6: A/T shift solenoid 4 (S4): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B74 15: Wastegate VSV (PMC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B74 5: Intake air bypass VSV (VSV1): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B75 3: Exhaust gas control VSV (VSV2): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B75 7: EVAP purge VSV (PRG): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 12: Exhaust bypass VSV (VSV3): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 13: A/T lock-up solenoid - (SLU-): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 14: A/T accumulator solenoid - (SLN-): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 15: A/T line-pressure solenoid - (SLT-): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 16: Fuel pressure-up VSV (FPU): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 7: A/T lock-up solenoid + (SLU+): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 8: A/T accumulator solenoid + (SLN+): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B76 9: A/T line-pressure solenoid + (SLT+): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B78 2: TRAC snow-mode light (SNOW): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B78 5: Fuel pump control (FPC): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B78 6: Check-engine light (W): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 1: TRAC enable light (IND): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 14: TRAC active light (CIND): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 17: A/T meter LCD (LPO3): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 18: A/T meter LCD (SPTL): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 19: Reverse buzzer (BZ): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 3: A/T meter LCD (LPO1): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B79 4: A/T meter LCD (LPO2): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-B75 10: Mass air flow (VG): no free maf/analog_0_5 on Speeduino Speeduino - OEM-B76 17: A/T oil temperature (OIL): no free thermistor/analog_0_5 on Speeduino Speeduino - OEM-B76 5: No.2 speed sensor (SP2+): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B74 25: Igniter verification (IGF): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B76 10: OD direct-clutch speed (NCO-): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B76 4: OD direct-clutch speed (NCO+): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B77 18: Rear right wheel speed (RRO): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B77 19: Rear left wheel speed (RLO): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B77 27: Road speed (RSPD): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B78 4: Fuel pump diagnostic (DI): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B79 7: Front right wheel speed (FRO): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B79 8: Front left wheel speed (FLO): no free frequency_in/switch_in on Speeduino Speeduino - OEM-B75 21: A/T 1st-gear indicator (L): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B75 20: A/T 2nd-gear indicator (2): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B74 24: Neutral/park switch (NSW): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B75 8: Main oil pressure switch (MOPS): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 1: A/C request (AC): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 14: A/T shift down (SFTD): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 16: A/T reverse indicator (R): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 2: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 21: ABS active (ABS): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 26: Electrical load sense (ELS): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 4: A/T shift up (SFTU): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 5: Diagnostic/timing check (TC): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 6: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B77 7: A/T manual position (3): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B78 3: TRAC snow-mode switch (SNWI): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B79 2: TRAC off switch (MSW): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B78 11: Serial diagnostic (SIL): no free k_line on Speeduino Speeduino
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 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 | 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 | — | — | — |
| 3 | forum | rusEFI Mazda Miata 2002 engine wiring | https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2002 | archive | 2026-10-05 | cc3cae670408 |
| 3 | community_copy | wilbo666: 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 | — | — | — |