Scion FR-S (ZN6, FA20) → Speeduino Speeduino v0.4 (auto)
Scion FR-S (ZN6, FA20) — Speeduino — Speeduino
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 10: read the Findings page before cutting any wire |
| Size of the job | 53 wires · 8 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-A33-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A34-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-A34-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A34-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A36-3 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A36-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A33-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A34-27 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A35-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A35-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A36-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A34-34 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A35-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A35-22 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A36-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-5V1-1 | SPEEDUINO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A34-16 | SPEEDUINO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A34-14 | SPEEDUINO-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A34-26 | SPEEDUINO-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A34-25 | SPEEDUINO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A36-21 | SPEEDUINO-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A36-10 | SPEEDUINO-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A36-31 | SPEEDUINO-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A36-8 | SPEEDUINO-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A36-12 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A36-14 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A36-22 | SPEEDUINO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A36-25 | SPEEDUINO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A36-24 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A36-32 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A36-13 | SPEEDUINO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A36-23 | SPEEDUINO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A36-1 | SPEEDUINO-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A36-2 | SPEEDUINO-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A35-13 | SPEEDUINO-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A35-12 | SPEEDUINO-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A35-11 | SPEEDUINO-A-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A33-20 | SPEEDUINO-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A35-17 | SPEEDUINO-A-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A35-35 | SPEEDUINO-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A35-5 | SPEEDUINO-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A35-7 | SPEEDUINO-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A35-15 | SPEEDUINO-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A34-20 | SPEEDUINO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A35-31 | SPEEDUINO-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A34-21 | SPEEDUINO-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A36-30 | SPEEDUINO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A33-12 | SPEEDUINO-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A33-14 | 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 | SPEEDUINO-A-10 | SPEEDUINO-A-13 | open (OL) | power ground must not touch 5 V sensor reference | |
| 2 | SPEEDUINO-A-12 | SPEEDUINO-A-13 | open (OL) | sensor ground must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
OEM-A33
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU power (+B2, main relay) | — | — | — | — | — | — | — | — |
| 12 | Intake air temperature (THA, in MAF) | — | W52 | — | 0.5 | SPEEDUINO-A-20 | — | — | — |
| 14 | Starter signal (STSW2) | — | W53 | — | 0.5 | SPEEDUINO-A-18 | — | — | — |
| 15 | Clutch switch (CLSW) | — | — | — | — | — | — | — | — |
| 16 | Neutral switch (NSW) | — | — | — | — | — | — | — | — |
| 17 | Starter signal (STSW2) | — | — | — | — | — | — | — | — |
| 18 | CAN low (CANL) | — | — | — | — | — | — | — | — |
| 19 | CAN high (CANH) | — | — | — | — | — | — | — | — |
| 2 | Battery constant (BATT, memory) | — | — | — | — | — | — | — | — |
| 20 | Blower relay (HB) | — | W42 | — | 0.5 | SPEEDUINO-A-35 | — | — | — |
| 22 | Mass air flow (VG) | — | — | — | — | — | — | — | — |
| 27 | Ignition switch sense (IGSW, IG2 relay) | — | — | — | — | — | — | — | — |
| 28 | Shield ground (SLE2) | — | — | — | — | — | — | — | — |
| 29 | MAF sensor ground (E2G) | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Stop light switch (ST1-) | — | — | — | — | — | — | — | — |
| 4 | Power ground (EC) | — | W1 | — | 0.85 | SP-GND-1 | — | — | — |
| 7 | Stop light switch (STP) | — | — | — | — | — | — | — | — |
| 8 | A/C pressure sensor (ACP) | — | — | — | — | — | — | — | — |
OEM-A34
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Power ground (E03) | — | W2 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | DI injector confirmation (IJF1) | — | — | — | — | — | — | — | — |
| 13 | High-pressure fuel pump spill valve (FPF) | — | — | — | — | — | — | — | — |
| 14 | VVT cam sensor exhaust bank 1 (EV1+) | — | W22 | — | 0.5 | SPEEDUINO-A-24 | — | — | — |
| 15 | VVT cam sensor intake bank 2 (VV2+) | — | — | — | — | — | — | — | — |
| 16 | Crank position (NE+) | — | W21 | — | 0.5 | SPEEDUINO-A-25 | — | — | — |
| 17 | Knock sensor 2 (KNK2) | — | — | — | — | — | — | — | — |
| 18 | A/F ratio sensor (A1A-) | — | — | — | — | — | — | — | — |
| 19 | A/F ratio sensor (A1A+) | — | — | — | — | — | — | — | — |
| 2 | Power ground (E04) | — | W3 | — | 0.85 | SP-GND-1 | — | — | — |
| 20 | Manifold absolute pressure (PIM) | — | W48 | — | 0.5 | SPEEDUINO-A-11 | — | — | — |
| 21 | Heated oxygen sensor (OX1B, rear) | — | W50 | — | 0.5 | SPEEDUINO-A-21 | — | — | — |
| 25 | VVT cam sensor exhaust bank 2 (EV2+) | — | W24 | — | 0.5 | SPEEDUINO-A-14 | — | — | — |
| 26 | VVT cam sensor intake bank 1 (VV1+) | — | W23 | — | 0.5 | SPEEDUINO-A-26 | — | — | — |
| 27 | Crank position return (NE-) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Knock sensor 1 (KNK1) | — | — | — | — | — | — | — | — |
| 29 | Shield ground (EKNK) | — | — | — | — | — | — | — | — |
| 3 | Power ground (E05) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Shield ground (SLE1) | — | — | — | — | — | — | — | — |
| 31 | DI injector confirmation (IJF2) | — | — | — | — | — | — | — | — |
| 32 | High-pressure fuel pump spill valve (FPD) | — | — | — | — | — | — | — | — |
| 34 | OCV power source (VCV, 5V) | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 35 | Shield ground (SLE3) | — | — | — | — | — | — | — | — |
| 5 | A/F ratio sensor heater (HA1A) | — | — | — | — | — | — | — | — |
| 6 | ECU power (+B, main relay) | — | — | — | — | — | — | — | — |
| 9 | Fuel pressure sensor (PR) | — | — | — | — | — | — | — | — |
OEM-A35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Canister vent valve (VPMP) | — | — | — | — | — | — | — | — |
| 10 | Fuel pump control monitor (DI) | — | — | — | — | — | — | — | — |
| 11 | Cooling fan relay 3 (FAN1) | — | W41 | — | 0.5 | SPEEDUINO-A-36 | — | — | — |
| 12 | Cooling fan relay 2 (FAN2) | — | W40 | — | 0.5 | SPEEDUINO-A-15 | — | — | — |
| 13 | EFI main relay 1 (SSHUT) | — | W39 | — | 0.5 | SPEEDUINO-A-16 | — | — | — |
| 15 | Tachometer output (TACH) | — | W47 | — | 0.5 | SPEEDUINO-A-17 | — | — | — |
| 17 | ETCS relay (MCR) | — | W43 | — | 0.5 | SPEEDUINO-A-37 | — | — | — |
| 19 | Fuel pump control (FPC) | — | — | — | — | — | — | — | — |
| 20 | Canister pressure sensor (PPMP) | — | — | — | — | — | — | — | — |
| 21 | Accelerator pedal 5V supply (VCPA) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | Accelerator pedal 5V supply (VCP2) | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 23 | Accelerator pedal position (VPA) | — | — | — | — | — | — | — | — |
| 26 | Starter signal (STA) | — | — | — | — | — | — | — | — |
| 29 | Accelerator pedal ground (EPA) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Accelerator pedal ground (EPA2) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Accelerator pedal position 2 (VPA2) | — | W49 | — | 0.5 | SPEEDUINO-A-22 | — | — | — |
| 35 | A/C clutch relay (AC) | — | W44 | — | 0.5 | SPEEDUINO-A-38 | — | — | — |
| 5 | Injector relay (IREL) | — | W45 | — | 0.5 | SPEEDUINO-A-29 | — | — | — |
| 7 | ETCS relay (+BM) | — | W46 | — | 0.5 | SPEEDUINO-A-30 | — | — | — |
| 8 | Leak detection pump (MPMP) | — | — | — | — | — | — | — | — |
OEM-A36
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Throttle actuator motor - (M-) | — | W37 | — | 0.5 | SPEEDUINO-A-31 | — | — | — |
| 10 | Ignition coil 2 (IGT2) | — | W26 | — | 0.5 | SPEEDUINO-A-34 | — | — | — |
| 11 | Purge valve (PRG) | — | — | — | — | — | — | — | — |
| 12 | Injector 1 port (#10) | — | W29 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 13 | Injector 4 port (#40) | — | W35 | — | 0.5 | SPEEDUINO-A-3 | — | — | — |
| 14 | Injector 1 direct (#1) | — | W30 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 16 | OCV intake bank 2 (OC2) | — | — | — | — | — | — | — | — |
| 17 | OCV intake bank 1 (OC1) | — | — | — | — | — | — | — | — |
| 18 | Throttle position (VTA1) | — | — | — | — | — | — | — | — |
| 19 | Sensor 5V supply (VC) | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 2 | Throttle actuator motor + (M+) | — | W38 | — | 0.5 | SPEEDUINO-A-32 | — | — | — |
| 20 | Oil temperature (OT) | — | — | — | — | — | — | — | — |
| 21 | Ignition coil 1 (IGT1) | — | W25 | — | 0.5 | SPEEDUINO-A-7 | — | — | — |
| 22 | Injector 2 port (#20) | — | W31 | — | 0.5 | SPEEDUINO-A-3 | — | — | — |
| 23 | Injector 4 direct (#4) | — | W36 | — | 0.5 | SPEEDUINO-A-5 | — | — | — |
| 24 | Injector 3 direct (#3) | — | W33 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 25 | Injector 2 direct (#2) | — | W32 | — | 0.5 | SPEEDUINO-A-5 | — | — | — |
| 28 | Throttle position 2 (VTA2) | — | — | — | — | — | — | — | — |
| 29 | Sensor ground (E1) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Power ground (E02) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Engine coolant temperature (THW) | — | W51 | — | 0.5 | SPEEDUINO-A-19 | — | — | — |
| 31 | Ignition coil 3 (IGT3) | — | W27 | — | 0.5 | SPEEDUINO-A-33 | — | — | — |
| 32 | Injector 3 port (#30) | — | W34 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 4 | Power ground (E01) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | OCV exhaust bank 2 (OE2) | — | — | — | — | — | — | — | — |
| 6 | Heated oxygen sensor heater (HT1B) | — | — | — | — | — | — | — | — |
| 7 | OCV exhaust bank 1 (OE1) | — | — | — | — | — | — | — | — |
| 8 | Ignition coil 4 (IGT4) | — | W28 | — | 0.5 | SPEEDUINO-A-8 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W9 | — | 0.5 | OEM-A33-29 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-A34-27 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-A35-29 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-A35-30 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-A36-29 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | SPEEDUINO-A-12 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | SPEEDUINO-A-23 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W16 | — | 0.5 | OEM-A34-34 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-A35-21 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-A35-22 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-A36-19 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | SPEEDUINO-A-13 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A33-4 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A34-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-A34-2 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-A34-3 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A36-3 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A36-4 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | SPEEDUINO-A-10 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | SPEEDUINO-A-9 | — | — | — |
SPEEDUINO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W29 | — | 0.5 | OEM-A36-12 | — | — | — |
| 1 | Injector 1 | — | W33 | — | 0.5 | OEM-A36-24 | — | — | — |
| 10 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | MAP sensor (0-5V) | — | W48 | — | 0.5 | OEM-A34-20 | — | — | — |
| 12 | Ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | 5V | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| 14 | Proto area 1 (flex fuel) | — | W24 | — | 0.5 | OEM-A34-25 | — | — | — |
| 15 | Proto area 2 (fan) | — | W40 | — | 0.5 | OEM-A35-12 | — | — | — |
| 16 | Proto area 3 (fuel pump) | — | W39 | — | 0.5 | OEM-A35-13 | — | — | — |
| 17 | Proto area 4 (tachometer) | — | W47 | — | 0.5 | OEM-A35-15 | — | — | — |
| 18 | Proto area 5 (clutch) | — | W53 | — | 0.5 | OEM-A33-14 | — | — | — |
| 19 | Coolant temp (CLT) | — | W51 | — | 0.5 | OEM-A36-30 | — | — | — |
| 2 | Injector 2 | — | W30 | — | 0.5 | OEM-A36-14 | — | — | — |
| 2 | Injector 2 | — | W34 | — | 0.5 | OEM-A36-32 | — | — | — |
| 20 | Inlet air temp (IAT) | — | W52 | — | 0.5 | OEM-A33-12 | — | — | — |
| 21 | O2 sensor | — | W50 | — | 0.5 | OEM-A34-21 | — | — | — |
| 22 | TPS input | — | W49 | — | 0.5 | OEM-A35-31 | — | — | — |
| 23 | Ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Cam input / VR2+ | — | W22 | — | 0.5 | OEM-A34-14 | — | — | — |
| 25 | Crank input / VR1+ | — | W21 | — | 0.5 | OEM-A34-16 | — | — | — |
| 26 | VR2- | — | W23 | — | 0.5 | OEM-A34-26 | — | — | — |
| 27 | VR1- | — | — | — | — | — | — | — | — |
| 28 | 5V | — | — | — | — | — | — | — | — |
| 29 | Idle stepper 2B | — | W45 | — | 0.5 | OEM-A35-5 | — | — | — |
| 3 | Injector 3 | — | W31 | — | 0.5 | OEM-A36-22 | — | — | — |
| 3 | Injector 3 | — | W35 | — | 0.5 | OEM-A36-13 | — | — | — |
| 30 | Idle stepper 2A | — | W46 | — | 0.5 | OEM-A35-7 | — | — | — |
| 31 | Idle stepper 1A | — | W37 | — | 0.5 | OEM-A36-1 | — | — | — |
| 32 | Idle stepper 1B | — | W38 | — | 0.5 | OEM-A36-2 | — | — | — |
| 33 | Ignition 3 | — | W27 | — | 0.5 | OEM-A36-31 | — | — | — |
| 34 | Ignition 2 | — | W26 | — | 0.5 | OEM-A36-10 | — | — | — |
| 35 | Boost | — | W42 | — | 0.5 | OEM-A33-20 | — | — | — |
| 36 | Idle 2 (3-wire idle) | — | W41 | — | 0.5 | OEM-A35-11 | — | — | — |
| 37 | PWM idle | — | W43 | — | 0.5 | OEM-A35-17 | — | — | — |
| 38 | VVT | — | W44 | — | 0.5 | OEM-A35-35 | — | — | — |
| 5 | Injector 4 | — | W32 | — | 0.5 | OEM-A36-25 | — | — | — |
| 5 | Injector 4 | — | W36 | — | 0.5 | OEM-A36-23 | — | — | — |
| 7 | Ignition 1 | — | W25 | — | 0.5 | OEM-A36-21 | — | — | — |
| 8 | Ignition 4 | — | W28 | — | 0.5 | OEM-A36-8 | — | — | — |
| 9 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A33-1 | ECU power (+B2, main relay) | power_in | — | — | — | single_source | |
| OEM-A33-12 | Intake air temperature (THA, in MAF) | temp_in | SPEEDUINO-A-20 | Inlet air temp (IAT) | temp_in | single_source | |
| OEM-A33-14 | Starter signal (STSW2) | digital_in | SPEEDUINO-A-18 | Proto area 5 (clutch) | digital_in | single_source | |
| OEM-A33-15 | Clutch switch (CLSW) | digital_in | — | — | — | single_source | |
| OEM-A33-16 | Neutral switch (NSW) | digital_in | — | — | — | single_source | |
| OEM-A33-17 | Starter signal (STSW2) | digital_in | — | — | — | single_source | |
| OEM-A33-18 | CAN low (CANL) | can_l | — | — | — | single_source | |
| OEM-A33-19 | CAN high (CANH) | can_h | — | — | — | single_source | |
| OEM-A33-2 | Battery constant (BATT, memory) | power_in | — | — | — | single_source | |
| OEM-A33-20 | Blower relay (HB) | low_side_out | SPEEDUINO-A-35 | Boost | low_side_out | single_source | |
| OEM-A33-22 | Mass air flow (VG) | analog_in | — | — | — | single_source | |
| OEM-A33-27 | Ignition switch sense (IGSW, IG2 relay) | digital_in | — | — | — | single_source | |
| OEM-A33-28 | Shield ground (SLE2) | shield | — | — | — | single_source | |
| OEM-A33-29 | MAF sensor ground (E2G) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-A33-3 | Stop light switch (ST1-) | digital_in | — | — | — | single_source | |
| OEM-A33-4 | Power ground (EC) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A33-7 | Stop light switch (STP) | digital_in | — | — | — | single_source | |
| OEM-A33-8 | A/C pressure sensor (ACP) | analog_in | — | — | — | single_source | |
| OEM-A34-1 | Power ground (E03) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A34-11 | DI injector confirmation (IJF1) | analog_in | — | — | — | single_source | |
| OEM-A34-13 | High-pressure fuel pump spill valve (FPF) | low_side_out | — | — | — | single_source | |
| OEM-A34-14 | VVT cam sensor exhaust bank 1 (EV1+) | trigger_in | SPEEDUINO-A-24 | Cam input / VR2+ | trigger_in | single_source | |
| OEM-A34-15 | VVT cam sensor intake bank 2 (VV2+) | trigger_in | — | — | — | single_source | |
| OEM-A34-16 | Crank position (NE+) | trigger_in | SPEEDUINO-A-25 | Crank input / VR1+ | trigger_in | single_source | |
| OEM-A34-17 | Knock sensor 2 (KNK2) | knock_in | — | — | — | single_source | |
| OEM-A34-18 | A/F ratio sensor (A1A-) | — | — | — | — | single_source | |
| OEM-A34-19 | A/F ratio sensor (A1A+) | — | — | — | — | single_source | |
| OEM-A34-2 | Power ground (E04) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A34-20 | Manifold absolute pressure (PIM) | analog_in | SPEEDUINO-A-11 | MAP sensor (0-5V) | analog_in | single_source | |
| OEM-A34-21 | Heated oxygen sensor (OX1B, rear) | lambda_nb_in | SPEEDUINO-A-21 | O2 sensor | lambda_nb_in | single_source | |
| OEM-A34-25 | VVT cam sensor exhaust bank 2 (EV2+) | trigger_in | SPEEDUINO-A-14 | Proto area 1 (flex fuel) | digital_in | single_source | |
| OEM-A34-26 | VVT cam sensor intake bank 1 (VV1+) | trigger_in | SPEEDUINO-A-26 | VR2- | trigger_in | single_source | |
| OEM-A34-27 | Crank position return (NE-) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-A34-28 | Knock sensor 1 (KNK1) | knock_in | — | — | — | single_source | |
| OEM-A34-29 | Shield ground (EKNK) | shield | — | — | — | single_source | |
| OEM-A34-3 | Power ground (E05) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A34-30 | Shield ground (SLE1) | shield | — | — | — | single_source | |
| OEM-A34-31 | DI injector confirmation (IJF2) | analog_in | — | — | — | single_source | |
| OEM-A34-32 | High-pressure fuel pump spill valve (FPD) | low_side_out | — | — | — | single_source | |
| OEM-A34-34 | OCV power source (VCV, 5V) | vref | SPEEDUINO-A-13 | 5V | vref | single_source | |
| OEM-A34-35 | Shield ground (SLE3) | shield | — | — | — | single_source | |
| OEM-A34-5 | A/F ratio sensor heater (HA1A) | low_side_out | — | — | — | single_source | |
| OEM-A34-6 | ECU power (+B, main relay) | power_in | — | — | — | single_source | |
| OEM-A34-9 | Fuel pressure sensor (PR) | analog_in | — | — | — | single_source | |
| OEM-A35-1 | Canister vent valve (VPMP) | low_side_out | — | — | — | single_source | |
| OEM-A35-10 | Fuel pump control monitor (DI) | analog_in | — | — | — | single_source | |
| OEM-A35-11 | Cooling fan relay 3 (FAN1) | low_side_out | SPEEDUINO-A-36 | Idle 2 (3-wire idle) | low_side_out | single_source | |
| OEM-A35-12 | Cooling fan relay 2 (FAN2) | low_side_out | SPEEDUINO-A-15 | Proto area 2 (fan) | low_side_out | single_source | |
| OEM-A35-13 | EFI main relay 1 (SSHUT) | low_side_out | SPEEDUINO-A-16 | Proto area 3 (fuel pump) | low_side_out | single_source | |
| OEM-A35-15 | Tachometer output (TACH) | tacho_out | SPEEDUINO-A-17 | Proto area 4 (tachometer) | tacho_out | single_source | |
| OEM-A35-17 | ETCS relay (MCR) | low_side_out | SPEEDUINO-A-37 | PWM idle | low_side_out | single_source | |
| OEM-A35-19 | Fuel pump control (FPC) | low_side_out | — | — | — | single_source | |
| OEM-A35-20 | Canister pressure sensor (PPMP) | analog_in | — | — | — | single_source | |
| OEM-A35-21 | Accelerator pedal 5V supply (VCPA) | vref | SPEEDUINO-A-13 | 5V | vref | single_source | |
| OEM-A35-22 | Accelerator pedal 5V supply (VCP2) | vref | SPEEDUINO-A-13 | 5V | vref | single_source | |
| OEM-A35-23 | Accelerator pedal position (VPA) | analog_in | — | — | — | single_source | |
| OEM-A35-26 | Starter signal (STA) | digital_in | — | — | — | single_source | |
| OEM-A35-29 | Accelerator pedal ground (EPA) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-A35-30 | Accelerator pedal ground (EPA2) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-A35-31 | Accelerator pedal position 2 (VPA2) | analog_in | SPEEDUINO-A-22 | TPS input | analog_in | single_source | |
| OEM-A35-35 | A/C clutch relay (AC) | low_side_out | SPEEDUINO-A-38 | VVT | low_side_out | single_source | |
| OEM-A35-5 | Injector relay (IREL) | low_side_out | SPEEDUINO-A-29 | Idle stepper 2B | hbridge_out | single_source | |
| OEM-A35-7 | ETCS relay (+BM) | low_side_out | SPEEDUINO-A-30 | Idle stepper 2A | hbridge_out | single_source | |
| OEM-A35-8 | Leak detection pump (MPMP) | low_side_out | — | — | — | single_source | |
| OEM-A36-1 | Throttle actuator motor - (M-) | hbridge_out | SPEEDUINO-A-31 | Idle stepper 1A | hbridge_out | single_source | |
| OEM-A36-10 | Ignition coil 2 (IGT2) | ignition_out | SPEEDUINO-A-34 | Ignition 2 | ignition_out | single_source | |
| OEM-A36-11 | Purge valve (PRG) | low_side_out | — | — | — | single_source | |
| OEM-A36-12 | Injector 1 port (#10) | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-A36-13 | Injector 4 port (#40) | injector_out | SPEEDUINO-A-3 | Injector 3 | injector_out | single_source | |
| OEM-A36-14 | Injector 1 direct (#1) | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-A36-16 | OCV intake bank 2 (OC2) | low_side_out | — | — | — | single_source | |
| OEM-A36-17 | OCV intake bank 1 (OC1) | low_side_out | — | — | — | single_source | |
| OEM-A36-18 | Throttle position (VTA1) | analog_in | — | — | — | single_source | |
| OEM-A36-19 | Sensor 5V supply (VC) | vref | SPEEDUINO-A-13 | 5V | vref | single_source | |
| OEM-A36-2 | Throttle actuator motor + (M+) | hbridge_out | SPEEDUINO-A-32 | Idle stepper 1B | hbridge_out | single_source | |
| OEM-A36-20 | Oil temperature (OT) | temp_in | — | — | — | single_source | |
| OEM-A36-21 | Ignition coil 1 (IGT1) | ignition_out | SPEEDUINO-A-7 | Ignition 1 | ignition_out | single_source | |
| OEM-A36-22 | Injector 2 port (#20) | injector_out | SPEEDUINO-A-3 | Injector 3 | injector_out | single_source | |
| OEM-A36-23 | Injector 4 direct (#4) | injector_out | SPEEDUINO-A-5 | Injector 4 | injector_out | single_source | |
| OEM-A36-24 | Injector 3 direct (#3) | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-A36-25 | Injector 2 direct (#2) | injector_out | SPEEDUINO-A-5 | Injector 4 | injector_out | single_source | |
| OEM-A36-28 | Throttle position 2 (VTA2) | analog_in | — | — | — | single_source | |
| OEM-A36-29 | Sensor ground (E1) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-A36-3 | Power ground (E02) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A36-30 | Engine coolant temperature (THW) | temp_in | SPEEDUINO-A-19 | Coolant temp (CLT) | temp_in | single_source | |
| OEM-A36-31 | Ignition coil 3 (IGT3) | ignition_out | SPEEDUINO-A-33 | Ignition 3 | ignition_out | single_source | |
| OEM-A36-32 | Injector 3 port (#30) | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-A36-4 | Power ground (E01) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A36-5 | OCV exhaust bank 2 (OE2) | low_side_out | — | — | — | single_source | |
| OEM-A36-6 | Heated oxygen sensor heater (HT1B) | low_side_out | — | — | — | single_source | |
| OEM-A36-7 | OCV exhaust bank 1 (OE1) | low_side_out | — | — | — | single_source | |
| OEM-A36-8 | Ignition coil 4 (IGT4) | ignition_out | SPEEDUINO-A-8 | Ignition 4 | ignition_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A33-4 | SP-GND-1 | 0.85 | no route | Power ground (EC) | — | |
| W2 | OEM-A34-1 | SP-GND-1 | 0.85 | no route | Power ground (E03) | — | |
| W3 | OEM-A34-2 | SP-GND-1 | 0.85 | no route | Power ground (E04) | — | |
| W4 | OEM-A34-3 | SP-GND-1 | 0.85 | no route | Power ground (E05) | — | |
| W5 | OEM-A36-3 | SP-GND-1 | 0.85 | no route | Power ground (E02) | — | |
| W6 | OEM-A36-4 | SP-GND-1 | 0.85 | no route | Power ground (E01) | — | |
| W7 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | no route | Ground | — | |
| W8 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | no route | Ground | — | |
| W9 | OEM-A33-29 | SP-0V-1 | 0.5 | no route | MAF sensor ground (E2G) | — | |
| W10 | OEM-A34-27 | SP-0V-1 | 0.5 | no route | Crank position return (NE-) | — | |
| W11 | OEM-A35-29 | SP-0V-1 | 0.5 | no route | Accelerator pedal ground (EPA) | — | |
| W12 | OEM-A35-30 | SP-0V-1 | 0.5 | no route | Accelerator pedal ground (EPA2) | — | |
| W13 | OEM-A36-29 | SP-0V-1 | 0.5 | no route | Sensor ground (E1) | — | |
| W14 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | no route | Ground | — | |
| W15 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | no route | Ground | — | |
| W16 | OEM-A34-34 | SP-5V1-1 | 0.5 | no route | OCV power source (VCV, 5V) | — | |
| W17 | OEM-A35-21 | SP-5V1-1 | 0.5 | no route | Accelerator pedal 5V supply (VCPA) | — | |
| W18 | OEM-A35-22 | SP-5V1-1 | 0.5 | no route | Accelerator pedal 5V supply (VCP2) | — | |
| W19 | OEM-A36-19 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply (VC) | — | |
| W20 | SP-5V1-1 | SPEEDUINO-A-13 | 0.5 | no route | 5V | — | |
| W21 | OEM-A34-16 | SPEEDUINO-A-25 | 0.5 | no route | Crank position (NE+) | — | |
| W22 | OEM-A34-14 | SPEEDUINO-A-24 | 0.5 | no route | VVT cam sensor exhaust bank 1 (EV1+) | — | |
| W23 | OEM-A34-26 | SPEEDUINO-A-26 | 0.5 | no route | VVT cam sensor intake bank 1 (VV1+) | — | |
| W24 | OEM-A34-25 | SPEEDUINO-A-14 | 0.5 | no route | VVT cam sensor exhaust bank 2 (EV2+) | — | |
| W25 | OEM-A36-21 | SPEEDUINO-A-7 | 0.5 | no route | Ignition coil 1 (IGT1) | — | |
| W26 | OEM-A36-10 | SPEEDUINO-A-34 | 0.5 | no route | Ignition coil 2 (IGT2) | — | |
| W27 | OEM-A36-31 | SPEEDUINO-A-33 | 0.5 | no route | Ignition coil 3 (IGT3) | — | |
| W28 | OEM-A36-8 | SPEEDUINO-A-8 | 0.5 | no route | Ignition coil 4 (IGT4) | — | |
| W29 | OEM-A36-12 | SPEEDUINO-A-1 | 0.5 | no route | Injector 1 port (#10) | — | |
| W30 | OEM-A36-14 | SPEEDUINO-A-2 | 0.5 | no route | Injector 1 direct (#1) | — | |
| W31 | OEM-A36-22 | SPEEDUINO-A-3 | 0.5 | no route | Injector 2 port (#20) | — | |
| W32 | OEM-A36-25 | SPEEDUINO-A-5 | 0.5 | no route | Injector 2 direct (#2) | — | |
| W33 | OEM-A36-24 | SPEEDUINO-A-1 | 0.5 | no route | Injector 3 direct (#3) | — | |
| W34 | OEM-A36-32 | SPEEDUINO-A-2 | 0.5 | no route | Injector 3 port (#30) | — | |
| W35 | OEM-A36-13 | SPEEDUINO-A-3 | 0.5 | no route | Injector 4 port (#40) | — | |
| W36 | OEM-A36-23 | SPEEDUINO-A-5 | 0.5 | no route | Injector 4 direct (#4) | — | |
| W37 | OEM-A36-1 | SPEEDUINO-A-31 | 0.5 | no route | Throttle actuator motor - (M-) | — | |
| W38 | OEM-A36-2 | SPEEDUINO-A-32 | 0.5 | no route | Throttle actuator motor + (M+) | — | |
| W39 | OEM-A35-13 | SPEEDUINO-A-16 | 0.5 | no route | EFI main relay 1 (SSHUT) | — | |
| W40 | OEM-A35-12 | SPEEDUINO-A-15 | 0.5 | no route | Cooling fan relay 2 (FAN2) | — | |
| W41 | OEM-A35-11 | SPEEDUINO-A-36 | 0.5 | no route | Cooling fan relay 3 (FAN1) | — | |
| W42 | OEM-A33-20 | SPEEDUINO-A-35 | 0.5 | no route | Blower relay (HB) | — | |
| W43 | OEM-A35-17 | SPEEDUINO-A-37 | 0.5 | no route | ETCS relay (MCR) | — | |
| W44 | OEM-A35-35 | SPEEDUINO-A-38 | 0.5 | no route | A/C clutch relay (AC) | — | |
| W45 | OEM-A35-5 | SPEEDUINO-A-29 | 0.5 | no route | Injector relay (IREL) | — | |
| W46 | OEM-A35-7 | SPEEDUINO-A-30 | 0.5 | no route | ETCS relay (+BM) | — | |
| W47 | OEM-A35-15 | SPEEDUINO-A-17 | 0.5 | no route | Tachometer output (TACH) | — | |
| W48 | OEM-A34-20 | SPEEDUINO-A-11 | 0.5 | no route | Manifold absolute pressure (PIM) | — | |
| W49 | OEM-A35-31 | SPEEDUINO-A-22 | 0.5 | no route | Accelerator pedal position 2 (VPA2) | — | |
| W50 | OEM-A34-21 | SPEEDUINO-A-21 | 0.5 | no route | Heated oxygen sensor (OX1B, rear) | — | |
| W51 | OEM-A36-30 | SPEEDUINO-A-19 | 0.5 | no route | Engine coolant temperature (THW) | — | |
| W52 | OEM-A33-12 | SPEEDUINO-A-20 | 0.5 | no route | Intake air temperature (THA, in MAF) | — | |
| W53 | OEM-A33-14 | SPEEDUINO-A-18 | 0.5 | no route | Starter signal (STSW2) | — |
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 (24)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | DBW_SENSOR_INPUT | tps | Only 1 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them. |
| error | NET_MERGED | OEM-A36-12 + OEM-A36-24 + SPEEDUINO-A-1 | 2 different OEM functions share one net: OEM-A36-12 Injector 1 port (#10); OEM-A36-24 Injector 3 direct (#3) |
| error | NET_MERGED | OEM-A36-13 + OEM-A36-22 + SPEEDUINO-A-3 | 2 different OEM functions share one net: OEM-A36-13 Injector 4 port (#40); OEM-A36-22 Injector 2 port (#20) |
| error | NET_MERGED | OEM-A36-14 + OEM-A36-32 + SPEEDUINO-A-2 | 2 different OEM functions share one net: OEM-A36-14 Injector 1 direct (#1); OEM-A36-32 Injector 3 port (#30) |
| error | NET_MERGED | OEM-A36-23 + OEM-A36-25 + SPEEDUINO-A-5 | 2 different OEM functions share one net: OEM-A36-23 Injector 4 direct (#4); OEM-A36-25 Injector 2 direct (#2) |
| error | REQUIRED_UNMAPPED | OEM-A33-1 | Required OEM function "ECU power (+B2, main relay)" (power_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A34-6 | Required OEM function "ECU power (+B, main relay)" (power_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A35-23 | Required OEM function "Accelerator pedal position (VPA)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A36-18 | Required OEM function "Throttle position (VTA1)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-A36-28 | 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-A36-1) 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-A36-2) nor the peak rating of SPEEDUINO-A-32 "Idle stepper 1B" is known. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-15 | SPEEDUINO-A-15 "Proto area 2 (fan)" drives OEM-A35-12 Cooling fan relay 2 (FAN2) (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-A35-13 EFI main relay 1 (SSHUT) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-29 | SPEEDUINO-A-29 "Idle stepper 2B" drives OEM-A35-5 Injector relay (IREL) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-30 | SPEEDUINO-A-30 "Idle stepper 2A" drives OEM-A35-7 ETCS relay (+BM) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-35 | SPEEDUINO-A-35 "Boost" drives OEM-A33-20 Blower relay (HB) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-36 | SPEEDUINO-A-36 "Idle 2 (3-wire idle)" drives OEM-A35-11 Cooling fan relay 3 (FAN1) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-37 | SPEEDUINO-A-37 "PWM idle" drives OEM-A35-17 ETCS relay (MCR) (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-A35-35 A/C clutch relay (AC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-A34-25 ↔ SPEEDUINO-A-14 | OEM-A34-25 "VVT cam sensor exhaust bank 2 (EV2+)" [trigger_in] is wired to SPEEDUINO-A-14 "Proto area 1 (flex fuel)" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| warn | NET_FAMILY | OEM-A35-5 ↔ SPEEDUINO-A-29 | OEM-A35-5 "Injector relay (IREL)" [low_side_out] is wired to SPEEDUINO-A-29 "Idle stepper 2B" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-A35-7 ↔ SPEEDUINO-A-30 | OEM-A35-7 "ETCS relay (+BM)" [low_side_out] is wired to SPEEDUINO-A-30 "Idle stepper 2A" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | UNMAPPED | OEM | 38 optional OEM pins are not mapped: OEM-A33-15 Clutch switch (CLSW); OEM-A33-16 Neutral switch (NSW); OEM-A33-17 Starter signal (STSW2); OEM-A33-18 CAN low (CANL); OEM-A33-19 CAN high (CANH); OEM-A33-22 Mass air flow (VG); OEM-A33-27 Ignition switch sense (IGSW, IG2 relay); OEM-A33-28 Shield ground (SLE2); OEM-A33-3 Stop light switch (ST1-); OEM-A33-7 Stop light switch (STP); OEM-A33-8 A/C pressure sensor (ACP); OEM-A34-11 DI injector confirmation (IJF1); OEM-A34-13 High-pressure fuel pump spill valve (FPF); OEM-A34-15 VVT cam sensor intake bank 2 (VV2+); OEM-A34-17 Knock sensor 2 (KNK2); OEM-A34-18 A/F ratio sensor (A1A-); OEM-A34-19 A/F ratio sensor (A1A+); OEM-A34-28 Knock sensor 1 (KNK1); OEM-A34-29 Shield ground (EKNK); OEM-A34-30 Shield ground (SLE1); OEM-A34-31 DI injector confirmation (IJF2); OEM-A34-32 High-pressure fuel pump spill valve (FPD); OEM-A34-35 Shield ground (SLE3); OEM-A34-5 A/F ratio sensor heater (HA1A); OEM-A34-9 Fuel pressure sensor (PR); OEM-A35-1 Canister vent valve (VPMP); OEM-A35-10 Fuel pump control monitor (DI); OEM-A35-19 Fuel pump control (FPC); OEM-A35-20 Canister pressure sensor (PPMP); OEM-A35-26 Starter signal (STA); OEM-A35-8 Leak detection pump (MPMP); OEM-A36-11 Purge valve (PRG); OEM-A36-16 OCV intake bank 2 (OC2); OEM-A36-17 OCV intake bank 1 (OC1); OEM-A36-20 Oil temperature (OT); OEM-A36-5 OCV exhaust bank 2 (OE2); OEM-A36-6 Heated oxygen sensor heater (HT1B); OEM-A36-7 OCV exhaust bank 1 (OE1) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-A33-2 | 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: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - No knock input; the stock knock sensor would be unused - Trigger pattern for Toyota FA20 not checked yet 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 - OEM-A36 28: Throttle position 2 (VTA2): no free tps/analog_0_5 on Speeduino Speeduino - OEM-A35 23: Accelerator pedal position (VPA): no free tps/analog_0_5 on Speeduino Speeduino - OEM-A36 18: Throttle position (VTA1): no free tps/analog_0_5 on Speeduino Speeduino - OEM-A33 1: ECU power (+B2, main relay): no rule for class ecu_main_power; wire by hand - OEM-A34 6: ECU power (+B, main relay): no rule for class ecu_main_power; wire by hand Not wired: - OEM-A33 2: Battery constant (BATT, memory): Speeduino Speeduino has no battery-constant input; not needed - OEM-A34 15: VVT cam sensor intake bank 2 (VV2+): no free cam_hall/cam_vr/frequency_in input on Speeduino Speeduino - OEM-A34 28: Knock sensor 1 (KNK1): no free knock input on Speeduino Speeduino - OEM-A34 17: Knock sensor 2 (KNK2): no free knock input on Speeduino Speeduino - OEM-A33 28: Shield ground (SLE2): no shield pin on Speeduino Speeduino - OEM-A34 29: Shield ground (EKNK): no shield pin on Speeduino Speeduino - OEM-A34 30: Shield ground (SLE1): no shield pin on Speeduino Speeduino - OEM-A34 35: Shield ground (SLE3): no shield pin on Speeduino Speeduino - OEM-A33 27: Ignition switch sense (IGSW, IG2 relay): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); Speeduino Speeduino has no dedicated key-on input - OEM-A34 5: A/F ratio sensor heater (HA1A): no free heater_low_side/low_side/ls_hs/hbridge on Speeduino Speeduino - OEM-A36 6: Heated oxygen sensor heater (HT1B): no free heater_low_side/low_side/ls_hs/hbridge on Speeduino Speeduino - OEM-A36 17: OCV intake bank 1 (OC1): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A36 7: OCV exhaust bank 1 (OE1): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A36 16: OCV intake bank 2 (OC2): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A36 5: OCV exhaust bank 2 (OE2): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A34 13: High-pressure fuel pump spill valve (FPF): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A34 32: High-pressure fuel pump spill valve (FPD): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A35 1: Canister vent valve (VPMP): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A35 19: Fuel pump control (FPC): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A35 8: Leak detection pump (MPMP): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A36 11: Purge valve (PRG): no free low_side/ls_hs/injector/hbridge on Speeduino Speeduino - OEM-A33 22: Mass air flow (VG): no free maf/analog_0_5 on Speeduino Speeduino - OEM-A36 20: Oil temperature (OT): no free thermistor/analog_0_5 on Speeduino Speeduino - OEM-A33 8: A/C pressure sensor (ACP): no free analog_0_5 on Speeduino Speeduino - OEM-A34 11: DI injector confirmation (IJF1): no free analog_0_5 on Speeduino Speeduino - OEM-A34 31: DI injector confirmation (IJF2): no free analog_0_5 on Speeduino Speeduino - OEM-A34 9: Fuel pressure sensor (PR): no free analog_0_5 on Speeduino Speeduino - OEM-A35 10: Fuel pump control monitor (DI): no free analog_0_5 on Speeduino Speeduino - OEM-A35 20: Canister pressure sensor (PPMP): no free analog_0_5 on Speeduino Speeduino - OEM-A33 15: Clutch switch (CLSW): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-A33 16: Neutral switch (NSW): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-A33 17: Starter signal (STSW2): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-A33 3: Stop light switch (ST1-): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-A33 7: Stop light switch (STP): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-A35 26: Starter signal (STA): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-A33 19: CAN high (CANH): no free can_h on Speeduino Speeduino - OEM-A33 18: CAN low (CANL): no free can_l on Speeduino Speeduino - OEM-A34 18: A/F ratio sensor (A1A-): not classified in the library; wire by hand - OEM-A34 19: A/F ratio sensor (A1A+): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Scion FR-S / Toyota 86 Repair Manual (2013) — FA20 ECM terminal pinout (SFI system) | https://gt86.me/images/0/09/2013_Scion_FR-S_Repair_Manual.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 |