Honda NSX NA2 1997-2005 (C32B) → Speeduino Speeduino v0.4 (auto)
Honda NSX NA2 1997-2005 (C32B) — 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 | 15: read the Findings page before cutting any wire |
| Size of the job | 49 wires · 10 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-A-12 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-25 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-G-7 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-G-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-26 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-B-13 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-B-14 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-B-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-B-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-B-9 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-D-11 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-F-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-F-2 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-D-10 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-F-1 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-5V1-1 | SPEEDUINO-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-F-14 | SPEEDUINO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-B-8 | SPEEDUINO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-B-7 | SPEEDUINO-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-B-6 | SPEEDUINO-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-B-5 | SPEEDUINO-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-11 | SPEEDUINO-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-24 | SPEEDUINO-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-12 | SPEEDUINO-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-11 | SPEEDUINO-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-1 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-2 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-3 | SPEEDUINO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-14 | SPEEDUINO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-15 | SPEEDUINO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-16 | SPEEDUINO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-5 | SPEEDUINO-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-F-19 | SPEEDUINO-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-F-20 | SPEEDUINO-A-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-D-9 | SPEEDUINO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-F-13 | SPEEDUINO-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-D-7 | SPEEDUINO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-F-4 | SPEEDUINO-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-8 | SPEEDUINO-A-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-10 | SPEEDUINO-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-C-8 | SPEEDUINO-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-D-16 | SPEEDUINO-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-D-8 | SPEEDUINO-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-C-7 | SPEEDUINO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-F-16 | 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-10 | SPEEDUINO-A-28 | open (OL) | power ground must not touch 5 V sensor reference | |
| 3 | SPEEDUINO-A-12 | SPEEDUINO-A-13 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 4 | SPEEDUINO-A-12 | SPEEDUINO-A-28 | 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-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 (INJ1) | — | W30 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 10 | Rear secondary O2 heater (RSO2SHTC) | — | W44 | — | 0.5 | SPEEDUINO-A-38 | — | — | — |
| 11 | Ignition coil 1 (IGN COIL1) | — | W26 | — | 0.5 | SPEEDUINO-A-7 | — | — | — |
| 12 | Power ground (PG1) | — | W1 | — | 0.85 | SP-GND-1 | — | — | — |
| 13 | ECM power source (IGP1) | — | — | — | — | — | — | — | — |
| 14 | Injector 4 (INJ4) | — | W33 | — | 0.5 | SPEEDUINO-A-5 | — | — | — |
| 15 | Injector 5 (INJ5) | — | W34 | — | 0.5 | SPEEDUINO-A-1 | — | — | — |
| 16 | Injector 6 (INJ6) | — | W35 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 17 | EVAP bypass solenoid (2WBS) | — | — | — | — | — | — | — | — |
| 2 | Injector 2 (INJ2) | — | W31 | — | 0.5 | SPEEDUINO-A-2 | — | — | — |
| 20 | IAB control solenoid (IABCS) | — | — | — | — | — | — | — | — |
| 21 | EVAP purge control solenoid (PCS) | — | — | — | — | — | — | — | — |
| 22 | Front primary O2 heater (FPO2SHTC) | — | — | — | — | — | — | — | — |
| 23 | Rear primary O2 heater (RPO2SHTC) | — | — | — | — | — | — | — | — |
| 24 | Ignition coil 2 (IGN COIL2) | — | W27 | — | 0.5 | SPEEDUINO-A-34 | — | — | — |
| 25 | Power ground (PG2) | — | W2 | — | 0.85 | SP-GND-1 | — | — | — |
| 26 | Logic ground (LG1) | — | W7 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W32 | — | 0.5 | SPEEDUINO-A-3 | — | — | — |
| 4 | EVAP canister vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 5 | Fuel pump relay (FLR1) | — | W36 | — | 0.5 | SPEEDUINO-A-16 | — | — | — |
| 6 | EGR control solenoid (ESOL) | — | — | — | — | — | — | — | — |
| 7 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
| 8 | A/C clutch relay (ACC) | — | W43 | — | 0.5 | SPEEDUINO-A-37 | — | — | — |
| 9 | Front secondary O2 heater (FSO2SHTC) | — | — | — | — | — | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTEC pressure switch front (VTP SWF) | — | — | — | — | — | — | — | — |
| 10 | Ignition coil 5 (IGN COIL5) | — | — | — | — | — | — | — | — |
| 11 | Ignition coil 4 (IGN COIL4) | — | W29 | — | 0.5 | SPEEDUINO-A-8 | — | — | — |
| 12 | Ignition coil 3 (IGN COIL3) | — | W28 | — | 0.5 | SPEEDUINO-A-33 | — | — | — |
| 13 | Cylinder position sensor 2 return (CYP 2M) | — | W8 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | Cylinder position sensor 1 return (CYP 1M) | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | Crank position sensor 2 return (CKP 2M) | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Crank position sensor 1 return (CKP 1M) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Ignition coil 6 (IGN COIL6) | — | — | — | — | — | — | — | — |
| 3 | VTEC pressure switch rear (VTP SWR) | — | — | — | — | — | — | — | — |
| 4 | Neutral switch (NT SW, M/T) | — | — | — | — | — | — | — | — |
| 5 | Cylinder position sensor 2 + (CYP 2P) | — | W25 | — | 0.5 | SPEEDUINO-A-26 | — | — | — |
| 6 | Cylinder position sensor 1 + (CYP 1P) | — | W24 | — | 0.5 | SPEEDUINO-A-24 | — | — | — |
| 7 | Crank position sensor 2 + (CKP 2P) | — | W23 | — | 0.5 | SPEEDUINO-A-27 | — | — | — |
| 8 | Crank position sensor 1 + (CKP 1P) | — | W22 | — | 0.5 | SPEEDUINO-A-25 | — | — | — |
| 9 | Logic ground (LG2) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECM power source (IGP2) | — | — | — | — | — | — | — | — |
| 4 | Clutch switch (MTCLS, M/T) | — | — | — | — | — | — | — | — |
| 6 | Starter switch (STS) | — | — | — | — | — | — | — | — |
| 7 | Vehicle speed sensor (VSS) | — | W48 | — | 0.5 | SPEEDUINO-A-14 | — | — | — |
| 8 | Engine speed pulse (NEP) | — | W45 | — | 0.5 | SPEEDUINO-A-17 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Backup power (VBU) | — | — | — | — | — | — | — | — |
| 10 | Sensor 5V supply (VCC2) | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 11 | Sensor ground (SG2) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Throttle position sensor (TPS) | — | — | — | — | — | — | — | — |
| 13 | Knock sensor front (KSF) | — | — | — | — | — | — | — | — |
| 16 | Front secondary O2 signal (O2S FS) | — | W46 | — | 0.5 | SPEEDUINO-A-21 | — | — | — |
| 17 | Rear secondary O2 signal (O2S RS) | — | — | — | — | — | — | — | — |
| 18 | Front primary O2 signal (O2S FP) | — | — | — | — | — | — | — | — |
| 19 | Rear primary O2 signal (O2S RP) | — | — | — | — | — | — | — | — |
| 2 | Knock sensor rear (KSR) | — | — | — | — | — | — | — | — |
| 20 | EGR valve lift sensor (EGRL) | — | — | — | — | — | — | — | — |
| 4 | K-line diagnostics | — | — | — | — | — | — | — | — |
| 7 | Engine coolant temperature (ECT) | — | W41 | — | 0.5 | SPEEDUINO-A-19 | — | — | — |
| 8 | Intake air temperature (IAT) | — | W47 | — | 0.5 | SPEEDUINO-A-20 | — | — | — |
| 9 | MAP sensor | — | W39 | — | 0.5 | SPEEDUINO-A-11 | — | — | — |
OEM-F
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor 5V supply (VCC1) | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 12 | Accelerator pedal position 2 (AP2) | — | — | — | — | — | — | — | — |
| 13 | Accelerator pedal position 1 (AP1) | — | W40 | — | 0.5 | SPEEDUINO-A-22 | — | — | — |
| 14 | Accelerator pedal 5V supply (VCC3) | — | W21 | — | 0.5 | SPEEDUINO-A-13 | — | — | — |
| 15 | Accelerator pedal ground (SG3) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Brake switch 1 (BKSW1) | — | W49 | — | 0.5 | SPEEDUINO-A-18 | — | — | — |
| 19 | VTEC solenoid front (VT SOLF) | — | W37 | — | 0.5 | SPEEDUINO-A-15 | — | — | — |
| 2 | Sensor ground (SG1) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | VTEC solenoid rear (VT SOLR) | — | W38 | — | 0.5 | SPEEDUINO-A-36 | — | — | — |
| 4 | Fuel pump relay 2 (FLR2) | — | W42 | — | 0.5 | SPEEDUINO-A-35 | — | — | — |
| 6 | Brake switch 2 (BKSW2) | — | — | — | — | — | — | — | — |
OEM-G
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Throttle motor common power phases 2&4 (COM2) | — | — | — | — | — | — | — | — |
| 11 | Throttle motor phase 3 (PM3) | — | — | — | — | — | — | — | — |
| 12 | Throttle motor phase 4 (PM4) | — | — | — | — | — | — | — | — |
| 2 | Throttle motor power source 1 (IGM1) | — | — | — | — | — | — | — | — |
| 3 | Throttle motor power source 2 (IGM2) | — | — | — | — | — | — | — | — |
| 4 | Throttle motor phase 1 (PM1) | — | — | — | — | — | — | — | — |
| 5 | Throttle motor phase 2 (PM2) | — | — | — | — | — | — | — | — |
| 7 | Throttle motor ground 1 (PGM1) | — | W3 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Throttle motor ground 2 (PGM2) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Throttle motor common power phases 1&3 (COM1) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.5 | OEM-A-26 | — | — | — |
| 1 | — | — | W8 | — | 0.5 | OEM-B-13 | — | — | — |
| 1 | — | — | W9 | — | 0.5 | OEM-B-14 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-B-15 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-B-16 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-B-9 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-D-11 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-F-15 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-F-2 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | SPEEDUINO-A-12 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | SPEEDUINO-A-23 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W18 | — | 0.5 | OEM-D-10 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-F-1 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | SPEEDUINO-A-28 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-12 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-A-25 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-G-7 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-G-8 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | SPEEDUINO-A-10 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | SPEEDUINO-A-9 | — | — | — |
SPEEDUINO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W30 | — | 0.5 | OEM-A-1 | — | — | — |
| 1 | Injector 1 | — | W34 | — | 0.5 | OEM-A-15 | — | — | — |
| 10 | Ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | MAP sensor (0-5V) | — | W39 | — | 0.5 | OEM-D-9 | — | — | — |
| 12 | Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | 5V | — | W21 | — | 0.5 | OEM-F-14 | — | — | — |
| 14 | Proto area 1 (flex fuel) | — | W48 | — | 0.5 | OEM-C-7 | — | — | — |
| 15 | Proto area 2 (fan) | — | W37 | — | 0.5 | OEM-F-19 | — | — | — |
| 16 | Proto area 3 (fuel pump) | — | W36 | — | 0.5 | OEM-A-5 | — | — | — |
| 17 | Proto area 4 (tachometer) | — | W45 | — | 0.5 | OEM-C-8 | — | — | — |
| 18 | Proto area 5 (clutch) | — | W49 | — | 0.5 | OEM-F-16 | — | — | — |
| 19 | Coolant temp (CLT) | — | W41 | — | 0.5 | OEM-D-7 | — | — | — |
| 2 | Injector 2 | — | W31 | — | 0.5 | OEM-A-2 | — | — | — |
| 2 | Injector 2 | — | W35 | — | 0.5 | OEM-A-16 | — | — | — |
| 20 | Inlet air temp (IAT) | — | W47 | — | 0.5 | OEM-D-8 | — | — | — |
| 21 | O2 sensor | — | W46 | — | 0.5 | OEM-D-16 | — | — | — |
| 22 | TPS input | — | W40 | — | 0.5 | OEM-F-13 | — | — | — |
| 23 | Ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Cam input / VR2+ | — | W24 | — | 0.5 | OEM-B-6 | — | — | — |
| 25 | Crank input / VR1+ | — | W22 | — | 0.5 | OEM-B-8 | — | — | — |
| 26 | VR2- | — | W25 | — | 0.5 | OEM-B-5 | — | — | — |
| 27 | VR1- | — | W23 | — | 0.5 | OEM-B-7 | — | — | — |
| 28 | 5V | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| 29 | Idle stepper 2B | — | — | — | — | — | — | — | — |
| 3 | Injector 3 | — | W32 | — | 0.5 | OEM-A-3 | — | — | — |
| 30 | Idle stepper 2A | — | — | — | — | — | — | — | — |
| 31 | Idle stepper 1A | — | — | — | — | — | — | — | — |
| 32 | Idle stepper 1B | — | — | — | — | — | — | — | — |
| 33 | Ignition 3 | — | W28 | — | 0.5 | OEM-B-12 | — | — | — |
| 34 | Ignition 2 | — | W27 | — | 0.5 | OEM-A-24 | — | — | — |
| 35 | Boost | — | W42 | — | 0.5 | OEM-F-4 | — | — | — |
| 36 | Idle 2 (3-wire idle) | — | W38 | — | 0.5 | OEM-F-20 | — | — | — |
| 37 | PWM idle | — | W43 | — | 0.5 | OEM-A-8 | — | — | — |
| 38 | VVT | — | W44 | — | 0.5 | OEM-A-10 | — | — | — |
| 5 | Injector 4 | — | W33 | — | 0.5 | OEM-A-14 | — | — | — |
| 7 | Ignition 1 | — | W26 | — | 0.5 | OEM-A-11 | — | — | — |
| 8 | Ignition 4 | — | W29 | — | 0.5 | OEM-B-11 | — | — | — |
| 9 | Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Injector 1 (INJ1) | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-A-10 | Rear secondary O2 heater (RSO2SHTC) | low_side_out | SPEEDUINO-A-38 | VVT | low_side_out | single_source | |
| OEM-A-11 | Ignition coil 1 (IGN COIL1) | ignition_out | SPEEDUINO-A-7 | Ignition 1 | ignition_out | single_source | |
| OEM-A-12 | Power ground (PG1) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A-13 | ECM power source (IGP1) | power_in | — | — | — | single_source | |
| OEM-A-14 | Injector 4 (INJ4) | injector_out | SPEEDUINO-A-5 | Injector 4 | injector_out | single_source | |
| OEM-A-15 | Injector 5 (INJ5) | injector_out | SPEEDUINO-A-1 | Injector 1 | injector_out | single_source | |
| OEM-A-16 | Injector 6 (INJ6) | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-A-17 | EVAP bypass solenoid (2WBS) | low_side_out | — | — | — | single_source | |
| OEM-A-2 | Injector 2 (INJ2) | injector_out | SPEEDUINO-A-2 | Injector 2 | injector_out | single_source | |
| OEM-A-20 | IAB control solenoid (IABCS) | low_side_out | — | — | — | single_source | |
| OEM-A-21 | EVAP purge control solenoid (PCS) | low_side_out | — | — | — | single_source | |
| OEM-A-22 | Front primary O2 heater (FPO2SHTC) | low_side_out | — | — | — | single_source | |
| OEM-A-23 | Rear primary O2 heater (RPO2SHTC) | low_side_out | — | — | — | single_source | |
| OEM-A-24 | Ignition coil 2 (IGN COIL2) | ignition_out | SPEEDUINO-A-34 | Ignition 2 | ignition_out | single_source | |
| OEM-A-25 | Power ground (PG2) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-A-26 | Logic ground (LG1) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-A-3 | Injector 3 (INJ3) | injector_out | SPEEDUINO-A-3 | Injector 3 | injector_out | single_source | |
| OEM-A-4 | EVAP canister vent shut valve (VSV) | low_side_out | — | — | — | single_source | |
| OEM-A-5 | Fuel pump relay (FLR1) | low_side_out | SPEEDUINO-A-16 | Proto area 3 (fuel pump) | low_side_out | single_source | |
| OEM-A-6 | EGR control solenoid (ESOL) | low_side_out | — | — | — | single_source | |
| OEM-A-7 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-A-8 | A/C clutch relay (ACC) | low_side_out | SPEEDUINO-A-37 | PWM idle | low_side_out | single_source | |
| OEM-A-9 | Front secondary O2 heater (FSO2SHTC) | low_side_out | — | — | — | single_source | |
| OEM-B-1 | VTEC pressure switch front (VTP SWF) | digital_in | — | — | — | single_source | |
| OEM-B-10 | Ignition coil 5 (IGN COIL5) | ignition_out | — | — | — | single_source | |
| OEM-B-11 | Ignition coil 4 (IGN COIL4) | ignition_out | SPEEDUINO-A-8 | Ignition 4 | ignition_out | single_source | |
| OEM-B-12 | Ignition coil 3 (IGN COIL3) | ignition_out | SPEEDUINO-A-33 | Ignition 3 | ignition_out | single_source | |
| OEM-B-13 | Cylinder position sensor 2 return (CYP 2M) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B-14 | Cylinder position sensor 1 return (CYP 1M) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B-15 | Crank position sensor 2 return (CKP 2M) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B-16 | Crank position sensor 1 return (CKP 1M) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-B-2 | Ignition coil 6 (IGN COIL6) | ignition_out | — | — | — | single_source | |
| OEM-B-3 | VTEC pressure switch rear (VTP SWR) | digital_in | — | — | — | single_source | |
| OEM-B-4 | Neutral switch (NT SW, M/T) | digital_in | — | — | — | single_source | |
| OEM-B-5 | Cylinder position sensor 2 + (CYP 2P) | trigger_in | SPEEDUINO-A-26 | VR2- | trigger_in | single_source | |
| OEM-B-6 | Cylinder position sensor 1 + (CYP 1P) | trigger_in | SPEEDUINO-A-24 | Cam input / VR2+ | trigger_in | single_source | |
| OEM-B-7 | Crank position sensor 2 + (CKP 2P) | trigger_in | SPEEDUINO-A-27 | VR1- | trigger_in | single_source | |
| OEM-B-8 | Crank position sensor 1 + (CKP 1P) | trigger_in | SPEEDUINO-A-25 | Crank input / VR1+ | trigger_in | single_source | |
| OEM-B-9 | Logic ground (LG2) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-C-1 | ECM power source (IGP2) | power_in | — | — | — | single_source | |
| OEM-C-4 | Clutch switch (MTCLS, M/T) | digital_in | — | — | — | single_source | |
| OEM-C-6 | Starter switch (STS) | digital_in | — | — | — | single_source | |
| OEM-C-7 | Vehicle speed sensor (VSS) | digital_in | SPEEDUINO-A-14 | Proto area 1 (flex fuel) | digital_in | single_source | |
| OEM-C-8 | Engine speed pulse (NEP) | tacho_out | SPEEDUINO-A-17 | Proto area 4 (tachometer) | tacho_out | single_source | |
| OEM-D-1 | Backup power (VBU) | power_in | — | — | — | single_source | |
| OEM-D-10 | Sensor 5V supply (VCC2) | vref | SPEEDUINO-A-28 | 5V | vref | single_source | |
| OEM-D-11 | Sensor ground (SG2) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-D-12 | Throttle position sensor (TPS) | analog_in | — | — | — | single_source | |
| OEM-D-13 | Knock sensor front (KSF) | knock_in | — | — | — | single_source | |
| OEM-D-16 | Front secondary O2 signal (O2S FS) | lambda_nb_in | SPEEDUINO-A-21 | O2 sensor | lambda_nb_in | single_source | |
| OEM-D-17 | Rear secondary O2 signal (O2S RS) | lambda_nb_in | — | — | — | single_source | |
| OEM-D-18 | Front primary O2 signal (O2S FP) | lambda_nb_in | — | — | — | single_source | |
| OEM-D-19 | Rear primary O2 signal (O2S RP) | lambda_nb_in | — | — | — | single_source | |
| OEM-D-2 | Knock sensor rear (KSR) | knock_in | — | — | — | single_source | |
| OEM-D-20 | EGR valve lift sensor (EGRL) | analog_in | — | — | — | single_source | |
| OEM-D-4 | K-line diagnostics | serial | — | — | — | single_source | |
| OEM-D-7 | Engine coolant temperature (ECT) | temp_in | SPEEDUINO-A-19 | Coolant temp (CLT) | temp_in | single_source | |
| OEM-D-8 | Intake air temperature (IAT) | temp_in | SPEEDUINO-A-20 | Inlet air temp (IAT) | temp_in | single_source | |
| OEM-D-9 | MAP sensor | analog_in | SPEEDUINO-A-11 | MAP sensor (0-5V) | analog_in | single_source | |
| OEM-F-1 | Sensor 5V supply (VCC1) | vref | SPEEDUINO-A-28 | 5V | vref | single_source | |
| OEM-F-12 | Accelerator pedal position 2 (AP2) | analog_in | — | — | — | single_source | |
| OEM-F-13 | Accelerator pedal position 1 (AP1) | analog_in | SPEEDUINO-A-22 | TPS input | analog_in | single_source | |
| OEM-F-14 | Accelerator pedal 5V supply (VCC3) | vref | SPEEDUINO-A-13 | 5V | vref | single_source | |
| OEM-F-15 | Accelerator pedal ground (SG3) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-F-16 | Brake switch 1 (BKSW1) | digital_in | SPEEDUINO-A-18 | Proto area 5 (clutch) | digital_in | single_source | |
| OEM-F-19 | VTEC solenoid front (VT SOLF) | low_side_out | SPEEDUINO-A-15 | Proto area 2 (fan) | low_side_out | single_source | |
| OEM-F-2 | Sensor ground (SG1) | sensor_ground | SPEEDUINO-A-12 + SPEEDUINO-A-23 | Ground + Ground | sensor_ground | single_source | |
| OEM-F-20 | VTEC solenoid rear (VT SOLR) | low_side_out | SPEEDUINO-A-36 | Idle 2 (3-wire idle) | low_side_out | single_source | |
| OEM-F-4 | Fuel pump relay 2 (FLR2) | low_side_out | SPEEDUINO-A-35 | Boost | low_side_out | single_source | |
| OEM-F-6 | Brake switch 2 (BKSW2) | digital_in | — | — | — | single_source | |
| OEM-G-10 | Throttle motor common power phases 2&4 (COM2) | power_in | — | — | — | single_source | |
| OEM-G-11 | Throttle motor phase 3 (PM3) | hbridge_out | — | — | — | single_source | |
| OEM-G-12 | Throttle motor phase 4 (PM4) | hbridge_out | — | — | — | single_source | |
| OEM-G-2 | Throttle motor power source 1 (IGM1) | power_in | — | — | — | single_source | |
| OEM-G-3 | Throttle motor power source 2 (IGM2) | power_in | — | — | — | single_source | |
| OEM-G-4 | Throttle motor phase 1 (PM1) | hbridge_out | — | — | — | single_source | |
| OEM-G-5 | Throttle motor phase 2 (PM2) | hbridge_out | — | — | — | single_source | |
| OEM-G-7 | Throttle motor ground 1 (PGM1) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-G-8 | Throttle motor ground 2 (PGM2) | ground | SPEEDUINO-A-10 + SPEEDUINO-A-9 | Ground + Ground | ground | single_source | |
| OEM-G-9 | Throttle motor common power phases 1&3 (COM1) | power_in | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-12 | SP-GND-1 | 0.85 | no route | Power ground (PG1) | — | |
| W2 | OEM-A-25 | SP-GND-1 | 0.85 | no route | Power ground (PG2) | — | |
| W3 | OEM-G-7 | SP-GND-1 | 0.85 | no route | Throttle motor ground 1 (PGM1) | — | |
| W4 | OEM-G-8 | SP-GND-1 | 0.85 | no route | Throttle motor ground 2 (PGM2) | — | |
| W5 | SP-GND-1 | SPEEDUINO-A-10 | 0.85 | no route | Ground | — | |
| W6 | SP-GND-1 | SPEEDUINO-A-9 | 0.85 | no route | Ground | — | |
| W7 | OEM-A-26 | SP-0V-1 | 0.5 | no route | Logic ground (LG1) | — | |
| W8 | OEM-B-13 | SP-0V-1 | 0.5 | no route | Cylinder position sensor 2 return (CYP 2M) | — | |
| W9 | OEM-B-14 | SP-0V-1 | 0.5 | no route | Cylinder position sensor 1 return (CYP 1M) | — | |
| W10 | OEM-B-15 | SP-0V-1 | 0.5 | no route | Crank position sensor 2 return (CKP 2M) | — | |
| W11 | OEM-B-16 | SP-0V-1 | 0.5 | no route | Crank position sensor 1 return (CKP 1M) | — | |
| W12 | OEM-B-9 | SP-0V-1 | 0.5 | no route | Logic ground (LG2) | — | |
| W13 | OEM-D-11 | SP-0V-1 | 0.5 | no route | Sensor ground (SG2) | — | |
| W14 | OEM-F-15 | SP-0V-1 | 0.5 | no route | Accelerator pedal ground (SG3) | — | |
| W15 | OEM-F-2 | SP-0V-1 | 0.5 | no route | Sensor ground (SG1) | — | |
| W16 | SP-0V-1 | SPEEDUINO-A-12 | 0.5 | no route | Ground | — | |
| W17 | SP-0V-1 | SPEEDUINO-A-23 | 0.5 | no route | Ground | — | |
| W18 | OEM-D-10 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply (VCC2) | — | |
| W19 | OEM-F-1 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply (VCC1) | — | |
| W20 | SP-5V1-1 | SPEEDUINO-A-28 | 0.5 | no route | 5V | — | |
| W21 | OEM-F-14 | SPEEDUINO-A-13 | 0.5 | no route | Accelerator pedal 5V supply (VCC3) | — | |
| W22 | OEM-B-8 | SPEEDUINO-A-25 | 0.5 | no route | Crank position sensor 1 + (CKP 1P) | — | |
| W23 | OEM-B-7 | SPEEDUINO-A-27 | 0.5 | no route | Crank position sensor 2 + (CKP 2P) | — | |
| W24 | OEM-B-6 | SPEEDUINO-A-24 | 0.5 | no route | Cylinder position sensor 1 + (CYP 1P) | — | |
| W25 | OEM-B-5 | SPEEDUINO-A-26 | 0.5 | no route | Cylinder position sensor 2 + (CYP 2P) | — | |
| W26 | OEM-A-11 | SPEEDUINO-A-7 | 0.5 | no route | Ignition coil 1 (IGN COIL1) | — | |
| W27 | OEM-A-24 | SPEEDUINO-A-34 | 0.5 | no route | Ignition coil 2 (IGN COIL2) | — | |
| W28 | OEM-B-12 | SPEEDUINO-A-33 | 0.5 | no route | Ignition coil 3 (IGN COIL3) | — | |
| W29 | OEM-B-11 | SPEEDUINO-A-8 | 0.5 | no route | Ignition coil 4 (IGN COIL4) | — | |
| W30 | OEM-A-1 | SPEEDUINO-A-1 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W31 | OEM-A-2 | SPEEDUINO-A-2 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W32 | OEM-A-3 | SPEEDUINO-A-3 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W33 | OEM-A-14 | SPEEDUINO-A-5 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W34 | OEM-A-15 | SPEEDUINO-A-1 | 0.5 | no route | Injector 5 (INJ5) | — | |
| W35 | OEM-A-16 | SPEEDUINO-A-2 | 0.5 | no route | Injector 6 (INJ6) | — | |
| W36 | OEM-A-5 | SPEEDUINO-A-16 | 0.5 | no route | Fuel pump relay (FLR1) | — | |
| W37 | OEM-F-19 | SPEEDUINO-A-15 | 0.5 | no route | VTEC solenoid front (VT SOLF) | — | |
| W38 | OEM-F-20 | SPEEDUINO-A-36 | 0.5 | no route | VTEC solenoid rear (VT SOLR) | — | |
| W39 | OEM-D-9 | SPEEDUINO-A-11 | 0.5 | no route | MAP sensor | — | |
| W40 | OEM-F-13 | SPEEDUINO-A-22 | 0.5 | no route | Accelerator pedal position 1 (AP1) | — | |
| W41 | OEM-D-7 | SPEEDUINO-A-19 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W42 | OEM-F-4 | SPEEDUINO-A-35 | 0.5 | no route | Fuel pump relay 2 (FLR2) | — | |
| W43 | OEM-A-8 | SPEEDUINO-A-37 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W44 | OEM-A-10 | SPEEDUINO-A-38 | 0.5 | no route | Rear secondary O2 heater (RSO2SHTC) | — | |
| W45 | OEM-C-8 | SPEEDUINO-A-17 | 0.5 | no route | Engine speed pulse (NEP) | — | |
| W46 | OEM-D-16 | SPEEDUINO-A-21 | 0.5 | no route | Front secondary O2 signal (O2S FS) | — | |
| W47 | OEM-D-8 | SPEEDUINO-A-20 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W48 | OEM-C-7 | SPEEDUINO-A-14 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W49 | OEM-F-16 | SPEEDUINO-A-18 | 0.5 | no route | Brake switch 1 (BKSW1) | — |
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 (19)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | DBW_SENSOR_INPUT | tps | Only 0 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them. |
| error | NET_MERGED | OEM-A-1 + OEM-A-15 + SPEEDUINO-A-1 | 2 different OEM functions share one net: OEM-A-1 Injector 1 (INJ1); OEM-A-15 Injector 5 (INJ5) |
| error | NET_MERGED | OEM-A-16 + OEM-A-2 + SPEEDUINO-A-2 | 2 different OEM functions share one net: OEM-A-16 Injector 6 (INJ6); OEM-A-2 Injector 2 (INJ2) |
| error | REQUIRED_UNMAPPED | OEM-A-13 | Required OEM function "ECM power source (IGP1)" (power_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-10 | Required OEM function "Ignition coil 5 (IGN COIL5)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-2 | Required OEM function "Ignition coil 6 (IGN COIL6)" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-C-1 | Required OEM function "ECM power source (IGP2)" (power_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-D-12 | Required OEM function "Throttle position sensor (TPS)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-D-13 | Required OEM function "Knock sensor front (KSF)" (knock_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-D-2 | Required OEM function "Knock sensor rear (KSR)" (knock_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-F-12 | Required OEM function "Accelerator pedal position 2 (AP2)" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-11 | Required OEM function "Throttle motor phase 3 (PM3)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-12 | Required OEM function "Throttle motor phase 4 (PM4)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-4 | Required OEM function "Throttle motor phase 1 (PM1)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-G-5 | Required OEM function "Throttle motor phase 2 (PM2)" (hbridge_out) is not connected to the new ECU. |
| warn | LOAD_UNKNOWN | SPEEDUINO-A-16 | SPEEDUINO-A-16 "Proto area 3 (fuel pump)" drives OEM-A-5 Fuel pump relay (FLR1) (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-F-4 Fuel pump relay 2 (FLR2) (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-A-8 A/C clutch relay (ACC) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | UNMAPPED | OEM | 24 optional OEM pins are not mapped: OEM-A-17 EVAP bypass solenoid (2WBS); OEM-A-20 IAB control solenoid (IABCS); OEM-A-21 EVAP purge control solenoid (PCS); OEM-A-22 Front primary O2 heater (FPO2SHTC); OEM-A-23 Rear primary O2 heater (RPO2SHTC); OEM-A-4 EVAP canister vent shut valve (VSV); OEM-A-6 EGR control solenoid (ESOL); OEM-A-7 Malfunction indicator lamp (MIL); OEM-A-9 Front secondary O2 heater (FSO2SHTC); OEM-B-1 VTEC pressure switch front (VTP SWF); OEM-B-3 VTEC pressure switch rear (VTP SWR); OEM-B-4 Neutral switch (NT SW, M/T); OEM-C-4 Clutch switch (MTCLS, M/T); OEM-C-6 Starter switch (STS); OEM-D-17 Rear secondary O2 signal (O2S RS); OEM-D-18 Front primary O2 signal (O2S FP); OEM-D-19 Rear primary O2 signal (O2S RP); OEM-D-20 EGR valve lift sensor (EGRL); OEM-D-4 K-line diagnostics; OEM-F-6 Brake switch 2 (BKSW2); OEM-G-10 Throttle motor common power phases 2&4 (COM2); OEM-G-2 Throttle motor power source 1 (IGM1); OEM-G-3 Throttle motor power source 2 (IGM2); OEM-G-9 Throttle motor common power phases 1&3 (COM1) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-D-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: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - Trigger pattern for Honda C32B not found in the ECU's docs (Decoder list Honda = D17 (complete) / K20/K24 (in dev) / J30/J32 (in dev) — no C30A/C32B/NSX) - 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 - This car has Honda Type 1A (1997+) immobilizer; needs a delete/bypass 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-D 13: Knock sensor front (KSF): no free knock input on Speeduino Speeduino - OEM-D 2: Knock sensor rear (KSR): no free knock input on Speeduino Speeduino - OEM-B 10: Ignition coil 5 (IGN COIL5): no free ignition output on Speeduino Speeduino - OEM-B 2: Ignition coil 6 (IGN COIL6): no free ignition output on Speeduino Speeduino - OEM-F 12: Accelerator pedal position 2 (AP2): no free tps/analog_0_5 on Speeduino Speeduino - OEM-D 12: Throttle position sensor (TPS): no free tps/analog_0_5 on Speeduino Speeduino - OEM-G 4: Throttle motor phase 1 (PM1): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 5: Throttle motor phase 2 (PM2): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 11: Throttle motor phase 3 (PM3): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-G 12: Throttle motor phase 4 (PM4): no +/− pair in the pinout (multi-phase or half-documented motor); wire by hand - OEM-A 13: ECM power source (IGP1): no rule for class ecu_main_power; wire by hand - OEM-C 1: ECM power source (IGP2): no rule for class ecu_main_power; wire by hand Not wired: - OEM-D 1: Backup power (VBU): Speeduino Speeduino has no battery-constant input; not needed - OEM-A 22: Front primary O2 heater (FPO2SHTC): no free heater_low_side/low_side/relay_control/ls_hs/injector on Speeduino Speeduino - OEM-A 23: Rear primary O2 heater (RPO2SHTC): no free heater_low_side/low_side/relay_control/ls_hs/injector on Speeduino Speeduino - OEM-A 9: Front secondary O2 heater (FSO2SHTC): no free heater_low_side/low_side/relay_control/ls_hs/injector on Speeduino Speeduino - OEM-A 17: EVAP bypass solenoid (2WBS): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-A 20: IAB control solenoid (IABCS): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-A 21: EVAP purge control solenoid (PCS): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-A 4: EVAP canister vent shut valve (VSV): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-A 6: EGR control solenoid (ESOL): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-A 7: Malfunction indicator lamp (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on Speeduino Speeduino - OEM-D 17: Rear secondary O2 signal (O2S RS): no free o2_narrowband/analog_0_5 on Speeduino Speeduino - OEM-D 18: Front primary O2 signal (O2S FP): no free o2_narrowband/analog_0_5 on Speeduino Speeduino - OEM-D 19: Rear primary O2 signal (O2S RP): no free o2_narrowband/analog_0_5 on Speeduino Speeduino - OEM-D 20: EGR valve lift sensor (EGRL): no free analog_0_5 on Speeduino Speeduino - OEM-F 6: Brake switch 2 (BKSW2): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B 1: VTEC pressure switch front (VTP SWF): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B 3: VTEC pressure switch rear (VTP SWR): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-B 4: Neutral switch (NT SW, M/T): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-C 4: Clutch switch (MTCLS, M/T): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-C 6: Starter switch (STS): no free switch_in/frequency_in/analog_0_5 on Speeduino Speeduino - OEM-D 4: K-line diagnostics: no free k_line on Speeduino Speeduino - OEM-G 2: Throttle motor power source 1 (IGM1): no rule for class switched_feed; wire by hand - OEM-G 9: Throttle motor common power phases 1&3 (COM1): no rule for class switched_feed; wire by hand - OEM-G 10: Throttle motor common power phases 2&4 (COM2): no rule for class switched_feed; wire by hand - OEM-G 3: Throttle motor power source 2 (IGM2): no rule for class switched_feed; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | 1997-2005 Acura NSX Service Manual §11 (PGM-FI), ECM terminal arrangement | https://www.manualslib.com/manual/1540331/Acura-Nsx-1997.html | — | — | — |
| 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 |