Honda NSX NA1 1991-2005 (C30A) → MoTeC M800 universal (auto)
Honda NSX NA1 1991-2005 (C30A) — MoTeC — M800
⚠ 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 | 1: read the Findings page before cutting any wire |
| Size of the job | 60 wires · 11 connectors · 3 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 3-1447221-4 |
| 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-25 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | M800-A-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-23 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-24 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-B-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | M800-A-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | M800-A-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-26 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-B-10 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-B-12 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-B-14 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-B-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-D-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-D-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | M800-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | M800-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | M800-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-D-18 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-D-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-D-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-5V1-1 | M800-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-B-15 | M800-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-B-11 | M800-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-21 | M800-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-22 | M800-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-8 | M800-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-6 | M800-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-4 | M800-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-3 | M800-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-1 | M800-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-3 | M800-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-5 | M800-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-2 | M800-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-4 | M800-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-6 | M800-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-D-17 | M800-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-D-11 | M800-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-D-13 | M800-B-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-8 | M800-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-15 | M800-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-18 | M800-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-7 | M800-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-5-F5 | M800-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-5-F7 | M800-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-10 | M800-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-12 | M800-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-11 | M800-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-13 | M800-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-D-14 | M800-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-D-16 | M800-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-D-15 | M800-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-D-12 | M800-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-C-2 | M800-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-D-9 | M800-B-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-5-F2 | M800-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-5-F4 | M800-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-B-7 | M800-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-C-11 | M800-B-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-C-3 | M800-B-22 | 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 | M800-A-26 | M800-B-14 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | M800-A-10 | M800-A-2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 3 | M800-A-10 | M800-A-26 | open (OL) | power ground must not touch +12 V supply | |
| 4 | M800-A-26 | M800-A-2 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | M800-B-14 | M800-A-2 | 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
M800-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | AUX2 | — | W41 | — | 0.5 | OEM-A-15 | — | — | — |
| 2 | 5V Engine Sensor Supply | — | W22 | — | 0.5 | SP-5V1-1 | — | — | — |
| 3 | IGN1 | — | W25 | — | 0.5 | OEM-A-21 | — | — | — |
| 4 | IGN2 | — | W26 | — | 0.5 | OEM-A-22 | — | — | — |
| 5 | IGN3 | — | W27 | — | 0.5 | OEM-B-8 | — | — | — |
| 6 | IGN4 | — | W28 | — | 0.5 | OEM-B-6 | — | — | — |
| 7 | IGN5 | — | W29 | — | 0.5 | OEM-B-4 | — | — | — |
| 8 | IGN6 | — | W30 | — | 0.5 | OEM-B-3 | — | — | — |
| 9 | 5V Auxiliary Sensor Supply | — | — | — | — | — | — | — | — |
| 10 | GND Battery Negative | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | GND Battery Negative | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | 8V Engine Sensor Supply | — | — | — | — | — | — | — | — |
| 13 | 8V Auxiliary Sensor and CAN Supply | — | — | — | — | — | — | — | — |
| 14 | AV1 | — | W37 | — | 0.5 | OEM-D-17 | — | — | — |
| 15 | Analog Voltage Input 2 | — | W38 | — | 0.5 | OEM-D-11 | — | — | — |
| 16 | Analog Voltage Input 3 | — | W50 | — | 0.5 | OEM-D-14 | — | — | — |
| 17 | Analog Voltage Input 4 | — | W51 | — | 0.5 | OEM-D-16 | — | — | — |
| 18 | AUX1 | — | W40 | — | 0.5 | OEM-A-8 | — | — | — |
| 19 | INJ1 | — | W31 | — | 0.5 | OEM-A-1 | — | — | — |
| 20 | INJ2 | — | W32 | — | 0.5 | OEM-A-3 | — | — | — |
| 21 | INJ3 | — | W33 | — | 0.5 | OEM-A-5 | — | — | — |
| 22 | INJ4 | — | W34 | — | 0.5 | OEM-A-2 | — | — | — |
| 23 | AUX3 | — | W42 | — | 0.5 | OEM-A-18 | — | — | — |
| 24 | AUX4 | — | W43 | — | 0.5 | OEM-A-7 | — | — | — |
| 25 | Analog Voltage Input 5 | — | W53 | — | 0.5 | OEM-D-12 | — | — | — |
| 26 | VBAT Battery Positive | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | INJ5 | — | W35 | — | 0.5 | OEM-A-4 | — | — | — |
| 28 | INJ6 | — | W36 | — | 0.5 | OEM-A-6 | — | — | — |
| 29 | INJ7 | — | W48 | — | 0.5 | OEM-A-11 | — | — | — |
| 30 | INJ8 | — | W49 | — | 0.5 | OEM-A-13 | — | — | — |
| 31 | AUX5 | — | W44 | — | 0.5 | OEM-5-F5 | — | — | — |
| 32 | AUX6 | — | W45 | — | 0.5 | OEM-5-F7 | — | — | — |
| 33 | AUX7 | — | W46 | — | 0.5 | OEM-A-10 | — | — | — |
| 34 | AUX8 | — | W47 | — | 0.5 | OEM-A-12 | — | — | — |
M800-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Crank Reference Timing Input | — | W23 | — | 0.5 | OEM-B-15 | — | — | — |
| 2 | Cam Sync Timing Input | — | W24 | — | 0.5 | OEM-B-11 | — | — | — |
| 3 | Analog Temperature Input 1 | — | W39 | — | 0.5 | OEM-D-13 | — | — | — |
| 4 | Analog Temperature Input 2 | — | W52 | — | 0.5 | OEM-D-15 | — | — | — |
| 5 | Analog Temperature Input 3 | — | — | — | — | — | — | — | — |
| 6 | Analog Temperature Input 4 | — | — | — | — | — | — | — | — |
| 7 | Analog Temperature Input 5 | — | — | — | — | — | — | — | — |
| 8 | Digital Input 1 | — | W54 | — | 0.5 | OEM-C-2 | — | — | — |
| 9 | Digital Input 2 | — | W55 | — | 0.5 | OEM-D-9 | — | — | — |
| 10 | Digital Input 3 | — | W56 | — | 0.5 | OEM-5-F2 | — | — | — |
| 11 | Digital Input 4 | — | W57 | — | 0.5 | OEM-5-F4 | — | — | — |
| 12 | Lambda2 Sense Voltage | — | — | — | — | — | — | — | — |
| 13 | Lambda2 Pump Current | — | — | — | — | — | — | — | — |
| 14 | 0V Comms Reference | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | 0V Auxiliary Sensor Supply | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | 0V Engine Sensor Supply | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | RS232 Transmit Data | — | — | — | — | — | — | — | — |
| 18 | RS232 Receive Data | — | — | — | — | — | — | — | — |
| 19 | Analog Temperature Input 6 | — | — | — | — | — | — | — | — |
| 20 | Analog Voltage Input 6 | — | W58 | — | 0.5 | OEM-B-7 | — | — | — |
| 21 | AV7 | — | W59 | — | 0.5 | OEM-C-11 | — | — | — |
| 22 | AV8 | — | W60 | — | 0.5 | OEM-C-3 | — | — | — |
| 23 | CAN Bus High | — | — | — | — | — | — | — | — |
| 24 | CAN Bus Low | — | — | — | — | — | — | — | — |
| 25 | Lambda1 Sense Voltage | — | — | — | — | — | — | — | — |
| 26 | Lambda1 Pump Current | — | — | — | — | — | — | — | — |
OEM-5
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| F2 | Front VTEC pressure switch | — | W56 | — | 0.5 | M800-B-10 | — | — | — |
| F4 | Rear VTEC pressure switch | — | W57 | — | 0.5 | M800-B-11 | — | — | — |
| F5 | Front VTEC solenoid valve | — | W44 | — | 0.5 | M800-A-31 | — | — | — |
| F7 | Rear VTEC solenoid valve | — | W45 | — | 0.5 | M800-A-32 | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W31 | — | 0.5 | M800-A-19 | — | — | — |
| 10 | Front O2 sensor heater (HTCNTF) | — | W46 | — | 0.5 | M800-A-33 | — | — | — |
| 11 | EGR control solenoid | — | W48 | — | 0.5 | M800-A-29 | — | — | — |
| 12 | Rear O2 sensor heater (HTCNTR) | — | W47 | — | 0.5 | M800-A-34 | — | — | — |
| 13 | Check engine light (WARN) | — | W49 | — | 0.5 | M800-A-30 | — | — | — |
| 14 | Chamber volume control solenoid (BPS) | — | — | — | — | — | — | — | — |
| 15 | A/C clutch relay (ACC) | — | W41 | — | 0.5 | M800-A-1 | — | — | — |
| 18 | Radiator fan control (FANCNTR) | — | W42 | — | 0.5 | M800-A-23 | — | — | — |
| 2 | Injector 4 | — | W34 | — | 0.5 | M800-A-22 | — | — | — |
| 20 | EVAP purge cut-off solenoid (PGS) | — | — | — | — | — | — | — | — |
| 21 | Ignition coil 1 | — | W25 | — | 0.5 | M800-A-3 | — | — | — |
| 22 | Ignition coil 2 | — | W26 | — | 0.5 | M800-A-4 | — | — | — |
| 23 | Power ground (PG1) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | Power ground (PG2) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | ECU power (IGP1) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | Sensor ground (LG1) | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Injector 2 | — | W32 | — | 0.5 | M800-A-20 | — | — | — |
| 4 | Injector 5 | — | W35 | — | 0.5 | M800-A-27 | — | — | — |
| 5 | Injector 3 | — | W33 | — | 0.5 | M800-A-21 | — | — | — |
| 6 | Injector 6 | — | W36 | — | 0.5 | M800-A-28 | — | — | — |
| 7 | Main relay | — | W43 | — | 0.5 | M800-A-24 | — | — | — |
| 8 | Fuel pump relay 2 (FLR2) | — | W40 | — | 0.5 | M800-A-18 | — | — | — |
| 9 | Idle air control valve (IACV) | — | — | — | — | — | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | CYL 2M — CYP sensor 2 return | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | CYL 1P — CYP sensor 1 signal | — | W24 | — | 0.5 | M800-B-2 | — | — | — |
| 12 | CYL 1M — CYP sensor 1 return | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | CRNK 2P — TDC sensor signal | — | — | — | — | — | — | — | — |
| 14 | CRNK 2M — TDC sensor return | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | CRNK 1P — crank sensor signal | — | W23 | — | 0.5 | M800-B-1 | — | — | — |
| 16 | CRNK 1M — crank sensor return | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Chassis ground (LG2) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Ignition coil 6 | — | W30 | — | 0.5 | M800-A-8 | — | — | — |
| 4 | Ignition coil 5 | — | W29 | — | 0.5 | M800-A-7 | — | — | — |
| 6 | Ignition coil 4 | — | W28 | — | 0.5 | M800-A-6 | — | — | — |
| 7 | Neutral switch (M/T) / gear position (A/T) | — | W58 | — | 0.5 | M800-B-20 | — | — | — |
| 8 | Ignition coil 3 | — | W27 | — | 0.5 | M800-A-5 | — | — | — |
| 9 | CYL 2P — CYP sensor 2 signal | — | — | — | — | — | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU power (IGP2) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Traction control | — | — | — | — | — | — | — | — |
| 11 | Starter switch (STS) | — | W59 | — | 0.5 | M800-B-21 | — | — | — |
| 12 | Traction control | — | — | — | — | — | — | — | — |
| 2 | Vehicle speed sensor (VSS) | — | W54 | — | 0.5 | M800-B-8 | — | — | — |
| 3 | A/C switch (ACS) | — | W60 | — | 0.5 | M800-B-22 | — | — | — |
| 4 | Tachometer output (NEP) | — | — | — | — | — | — | — | — |
| 5 | A/C pressure switch (PDSW) | — | — | — | — | — | — | — | — |
| 6 | Traction control | — | — | — | — | — | — | — | — |
| 7 | Clutch switch (M/T) | — | — | — | — | — | — | — | — |
| 8 | Traction control | — | — | — | — | — | — | — | — |
| 9 | Service check connector (SCS) | — | — | — | — | — | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery backup (VBU) | — | — | — | — | — | — | — | — |
| 11 | Throttle position sensor (TPS) | — | W38 | — | 0.5 | M800-A-15 | — | — | — |
| 12 | EGR lift sensor (EGRL) | — | W53 | — | 0.5 | M800-A-25 | — | — | — |
| 13 | Engine coolant temperature (ECT) | — | W39 | — | 0.5 | M800-B-3 | — | — | — |
| 14 | Primary O2 sensor | — | W50 | — | 0.5 | M800-A-16 | — | — | — |
| 15 | Intake air temperature (IAT) | — | W52 | — | 0.5 | M800-B-4 | — | — | — |
| 16 | Secondary O2 sensor | — | W51 | — | 0.5 | M800-A-17 | — | — | — |
| 17 | MAP sensor | — | W37 | — | 0.5 | M800-A-14 | — | — | — |
| 18 | +5V sensor supply (VCC) | — | W19 | — | 0.5 | SP-5V1-1 | — | — | — |
| 19 | +5V sensor supply (VCC) | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | +5V sensor supply (VCC) | — | W21 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor ground (SG) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Sensor ground (SG) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Knock sensor — rear | — | — | — | — | — | — | — | — |
| 4 | Knock sensor — front | — | — | — | — | — | — | — | — |
| 5 | Traction control | — | — | — | — | — | — | — | — |
| 6 | Fuel pump voltage monitor (VFP) | — | — | — | — | — | — | — | — |
| 8 | Ignition timing adjuster (IGADJ) | — | — | — | — | — | — | — | — |
| 9 | Alternator FR signal | — | W55 | — | 0.5 | M800-B-9 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W9 | — | 0.5 | OEM-A-26 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-B-10 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-B-12 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-B-14 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-B-16 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-D-21 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-D-22 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | M800-B-14 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | M800-B-15 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | M800-B-16 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-25 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-C-1 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | M800-A-26 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W19 | — | 0.5 | OEM-D-18 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-D-19 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-D-20 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | M800-A-2 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-24 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | M800-A-10 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | M800-A-11 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-5-F2 | Front VTEC pressure switch | digital_in | M800-B-10 | Digital Input 3 | digital_in | single_source | |
| OEM-5-F4 | Rear VTEC pressure switch | digital_in | M800-B-11 | Digital Input 4 | digital_in | single_source | |
| OEM-5-F5 | Front VTEC solenoid valve | high_side_out | M800-A-31 | AUX5 | switch_out | single_source | |
| OEM-5-F7 | Rear VTEC solenoid valve | high_side_out | M800-A-32 | AUX6 | switch_out | single_source | |
| OEM-A-1 | Injector 1 | injector_out | M800-A-19 | INJ1 | injector_out | single_source | |
| OEM-A-10 | Front O2 sensor heater (HTCNTF) | low_side_out | M800-A-33 | AUX7 | switch_out | single_source | |
| OEM-A-11 | EGR control solenoid | low_side_out | M800-A-29 | INJ7 | injector_out | single_source | |
| OEM-A-12 | Rear O2 sensor heater (HTCNTR) | low_side_out | M800-A-34 | AUX8 | switch_out | single_source | |
| OEM-A-13 | Check engine light (WARN) | low_side_out | M800-A-30 | INJ8 | injector_out | single_source | |
| OEM-A-14 | Chamber volume control solenoid (BPS) | low_side_out | — | — | — | single_source | |
| OEM-A-15 | A/C clutch relay (ACC) | low_side_out | M800-A-1 | AUX2 | switch_out | single_source | |
| OEM-A-18 | Radiator fan control (FANCNTR) | low_side_out | M800-A-23 | AUX3 | switch_out | single_source | |
| OEM-A-2 | Injector 4 | injector_out | M800-A-22 | INJ4 | injector_out | single_source | |
| OEM-A-20 | EVAP purge cut-off solenoid (PGS) | low_side_out | — | — | — | single_source | |
| OEM-A-21 | Ignition coil 1 | ignition_out | M800-A-3 | IGN1 | ignition_out | single_source | |
| OEM-A-22 | Ignition coil 2 | ignition_out | M800-A-4 | IGN2 | ignition_out | single_source | |
| OEM-A-23 | Power ground (PG1) | ground | M800-A-10 + M800-A-11 | GND Battery Negative + GND Battery Negative | ground | single_source | |
| OEM-A-24 | Power ground (PG2) | ground | M800-A-10 + M800-A-11 | GND Battery Negative + GND Battery Negative | ground | single_source | |
| OEM-A-25 | ECU power (IGP1) | power_in | M800-A-26 | VBAT Battery Positive | power_in | single_source | |
| OEM-A-26 | Sensor ground (LG1) | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-A-3 | Injector 2 | injector_out | M800-A-20 | INJ2 | injector_out | single_source | |
| OEM-A-4 | Injector 5 | injector_out | M800-A-27 | INJ5 | injector_out | corroborated | |
| OEM-A-5 | Injector 3 | injector_out | M800-A-21 | INJ3 | injector_out | single_source | |
| OEM-A-6 | Injector 6 | injector_out | M800-A-28 | INJ6 | injector_out | single_source | |
| OEM-A-7 | Main relay | low_side_out | M800-A-24 | AUX4 | switch_out | single_source | |
| OEM-A-8 | Fuel pump relay 2 (FLR2) | low_side_out | M800-A-18 | AUX1 | switch_out | single_source | |
| OEM-A-9 | Idle air control valve (IACV) | low_side_out | — | — | — | single_source | |
| OEM-B-10 | CYL 2M — CYP sensor 2 return | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-B-11 | CYL 1P — CYP sensor 1 signal | trigger_in | M800-B-2 | Cam Sync Timing Input | trigger_in | single_source | |
| OEM-B-12 | CYL 1M — CYP sensor 1 return | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-B-13 | CRNK 2P — TDC sensor signal | trigger_in | — | — | — | single_source | |
| OEM-B-14 | CRNK 2M — TDC sensor return | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-B-15 | CRNK 1P — crank sensor signal | trigger_in | M800-B-1 | Crank Reference Timing Input | trigger_in | single_source | |
| OEM-B-16 | CRNK 1M — crank sensor return | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-B-2 | Chassis ground (LG2) | ground | M800-A-10 + M800-A-11 | GND Battery Negative + GND Battery Negative | ground | single_source | |
| OEM-B-3 | Ignition coil 6 | ignition_out | M800-A-8 | IGN6 | ignition_out | single_source | |
| OEM-B-4 | Ignition coil 5 | ignition_out | M800-A-7 | IGN5 | ignition_out | single_source | |
| OEM-B-6 | Ignition coil 4 | ignition_out | M800-A-6 | IGN4 | ignition_out | single_source | |
| OEM-B-7 | Neutral switch (M/T) / gear position (A/T) | digital_in | M800-B-20 | Analog Voltage Input 6 | analog_in | single_source | |
| OEM-B-8 | Ignition coil 3 | ignition_out | M800-A-5 | IGN3 | ignition_out | single_source | |
| OEM-B-9 | CYL 2P — CYP sensor 2 signal | trigger_in | — | — | — | single_source | |
| OEM-C-1 | ECU power (IGP2) | power_in | M800-A-26 | VBAT Battery Positive | power_in | single_source | |
| OEM-C-10 | Traction control | — | — | — | — | single_source | |
| OEM-C-11 | Starter switch (STS) | digital_in | M800-B-21 | AV7 | analog_in | single_source | |
| OEM-C-12 | Traction control | — | — | — | — | single_source | |
| OEM-C-2 | Vehicle speed sensor (VSS) | digital_in | M800-B-8 | Digital Input 1 | digital_in | single_source | |
| OEM-C-3 | A/C switch (ACS) | digital_in | M800-B-22 | AV8 | analog_in | single_source | |
| OEM-C-4 | Tachometer output (NEP) | tacho_out | — | — | — | single_source | |
| OEM-C-5 | A/C pressure switch (PDSW) | digital_in | — | — | — | single_source | |
| OEM-C-6 | Traction control | — | — | — | — | single_source | |
| OEM-C-7 | Clutch switch (M/T) | digital_in | — | — | — | single_source | |
| OEM-C-8 | Traction control | — | — | — | — | single_source | |
| OEM-C-9 | Service check connector (SCS) | digital_in | — | — | — | single_source | |
| OEM-D-1 | Battery backup (VBU) | power_in | — | — | — | single_source | |
| OEM-D-11 | Throttle position sensor (TPS) | analog_in | M800-A-15 | Analog Voltage Input 2 | analog_in | single_source | |
| OEM-D-12 | EGR lift sensor (EGRL) | analog_in | M800-A-25 | Analog Voltage Input 5 | analog_in | single_source | |
| OEM-D-13 | Engine coolant temperature (ECT) | temp_in | M800-B-3 | Analog Temperature Input 1 | temp_in | single_source | |
| OEM-D-14 | Primary O2 sensor | lambda_nb_in | M800-A-16 | Analog Voltage Input 3 | analog_in | single_source | |
| OEM-D-15 | Intake air temperature (IAT) | temp_in | M800-B-4 | Analog Temperature Input 2 | temp_in | single_source | |
| OEM-D-16 | Secondary O2 sensor | lambda_nb_in | M800-A-17 | Analog Voltage Input 4 | analog_in | single_source | |
| OEM-D-17 | MAP sensor | analog_in | M800-A-14 | AV1 | analog_in | single_source | |
| OEM-D-18 | +5V sensor supply (VCC) | vref | M800-A-2 | 5V Engine Sensor Supply | vref | single_source | |
| OEM-D-19 | +5V sensor supply (VCC) | vref | M800-A-2 | 5V Engine Sensor Supply | vref | single_source | |
| OEM-D-20 | +5V sensor supply (VCC) | vref | M800-A-2 | 5V Engine Sensor Supply | vref | single_source | |
| OEM-D-21 | Sensor ground (SG) | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-D-22 | Sensor ground (SG) | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-D-3 | Knock sensor — rear | knock_in | — | — | — | single_source | |
| OEM-D-4 | Knock sensor — front | knock_in | — | — | — | single_source | |
| OEM-D-5 | Traction control | — | — | — | — | single_source | |
| OEM-D-6 | Fuel pump voltage monitor (VFP) | — | — | — | — | corroborated | |
| OEM-D-8 | Ignition timing adjuster (IGADJ) | digital_in | — | — | — | single_source | |
| OEM-D-9 | Alternator FR signal | digital_in | M800-B-9 | Digital Input 2 | digital_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-25 | SP-14V-1 | 0.85 | no route | ECU power (IGP1) | — | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | no route | ECU power (IGP2) | — | |
| W3 | SP-14V-1 | M800-A-26 | 0.85 | no route | VBAT Battery Positive | — | |
| W4 | OEM-A-23 | SP-GND-1 | 0.85 | no route | Power ground (PG1) | — | |
| W5 | OEM-A-24 | SP-GND-1 | 0.85 | no route | Power ground (PG2) | — | |
| W6 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Chassis ground (LG2) | — | |
| W7 | SP-GND-1 | M800-A-10 | 0.85 | no route | GND Battery Negative | — | |
| W8 | SP-GND-1 | M800-A-11 | 0.85 | no route | GND Battery Negative | — | |
| W9 | OEM-A-26 | SP-0V-1 | 0.5 | no route | Sensor ground (LG1) | — | |
| W10 | OEM-B-10 | SP-0V-1 | 0.5 | no route | CYL 2M — CYP sensor 2 return | — | |
| W11 | OEM-B-12 | SP-0V-1 | 0.5 | no route | CYL 1M — CYP sensor 1 return | — | |
| W12 | OEM-B-14 | SP-0V-1 | 0.5 | no route | CRNK 2M — TDC sensor return | — | |
| W13 | OEM-B-16 | SP-0V-1 | 0.5 | no route | CRNK 1M — crank sensor return | — | |
| W14 | OEM-D-21 | SP-0V-1 | 0.5 | no route | Sensor ground (SG) | — | |
| W15 | OEM-D-22 | SP-0V-1 | 0.5 | no route | Sensor ground (SG) | — | |
| W16 | SP-0V-1 | M800-B-14 | 0.5 | no route | 0V Comms Reference | — | |
| W17 | SP-0V-1 | M800-B-15 | 0.5 | no route | 0V Auxiliary Sensor Supply | — | |
| W18 | SP-0V-1 | M800-B-16 | 0.5 | no route | 0V Engine Sensor Supply | — | |
| W19 | OEM-D-18 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W20 | OEM-D-19 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W21 | OEM-D-20 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W22 | SP-5V1-1 | M800-A-2 | 0.5 | no route | 5V Engine Sensor Supply | — | |
| W23 | OEM-B-15 | M800-B-1 | 0.5 | no route | CRNK 1P — crank sensor signal | — | |
| W24 | OEM-B-11 | M800-B-2 | 0.5 | no route | CYL 1P — CYP sensor 1 signal | — | |
| W25 | OEM-A-21 | M800-A-3 | 0.5 | no route | Ignition coil 1 | — | |
| W26 | OEM-A-22 | M800-A-4 | 0.5 | no route | Ignition coil 2 | — | |
| W27 | OEM-B-8 | M800-A-5 | 0.5 | no route | Ignition coil 3 | — | |
| W28 | OEM-B-6 | M800-A-6 | 0.5 | no route | Ignition coil 4 | — | |
| W29 | OEM-B-4 | M800-A-7 | 0.5 | no route | Ignition coil 5 | — | |
| W30 | OEM-B-3 | M800-A-8 | 0.5 | no route | Ignition coil 6 | — | |
| W31 | OEM-A-1 | M800-A-19 | 0.5 | no route | Injector 1 | — | |
| W32 | OEM-A-3 | M800-A-20 | 0.5 | no route | Injector 2 | — | |
| W33 | OEM-A-5 | M800-A-21 | 0.5 | no route | Injector 3 | — | |
| W34 | OEM-A-2 | M800-A-22 | 0.5 | no route | Injector 4 | — | |
| W35 | OEM-A-4 | M800-A-27 | 0.5 | no route | Injector 5 | — | |
| W36 | OEM-A-6 | M800-A-28 | 0.5 | no route | Injector 6 | — | |
| W37 | OEM-D-17 | M800-A-14 | 0.5 | no route | MAP sensor | — | |
| W38 | OEM-D-11 | M800-A-15 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W39 | OEM-D-13 | M800-B-3 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W40 | OEM-A-8 | M800-A-18 | 0.5 | no route | Fuel pump relay 2 (FLR2) | — | |
| W41 | OEM-A-15 | M800-A-1 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W42 | OEM-A-18 | M800-A-23 | 0.5 | no route | Radiator fan control (FANCNTR) | — | |
| W43 | OEM-A-7 | M800-A-24 | 0.5 | no route | Main relay | — | |
| W44 | OEM-5-F5 | M800-A-31 | 0.5 | no route | Front VTEC solenoid valve | — | |
| W45 | OEM-5-F7 | M800-A-32 | 0.5 | no route | Rear VTEC solenoid valve | — | |
| W46 | OEM-A-10 | M800-A-33 | 0.5 | no route | Front O2 sensor heater (HTCNTF) | — | |
| W47 | OEM-A-12 | M800-A-34 | 0.5 | no route | Rear O2 sensor heater (HTCNTR) | — | |
| W48 | OEM-A-11 | M800-A-29 | 0.5 | no route | EGR control solenoid | — | |
| W49 | OEM-A-13 | M800-A-30 | 0.5 | no route | Check engine light (WARN) | — | |
| W50 | OEM-D-14 | M800-A-16 | 0.5 | no route | Primary O2 sensor | — | |
| W51 | OEM-D-16 | M800-A-17 | 0.5 | no route | Secondary O2 sensor | — | |
| W52 | OEM-D-15 | M800-B-4 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W53 | OEM-D-12 | M800-A-25 | 0.5 | no route | EGR lift sensor (EGRL) | — | |
| W54 | OEM-C-2 | M800-B-8 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W55 | OEM-D-9 | M800-B-9 | 0.5 | no route | Alternator FR signal | — | |
| W56 | OEM-5-F2 | M800-B-10 | 0.5 | no route | Front VTEC pressure switch | — | |
| W57 | OEM-5-F4 | M800-B-11 | 0.5 | no route | Rear VTEC pressure switch | — | |
| W58 | OEM-B-7 | M800-B-20 | 0.5 | no route | Neutral switch (M/T) / gear position (A/T) | — | |
| W59 | OEM-C-11 | M800-B-21 | 0.5 | no route | Starter switch (STS) | — | |
| W60 | OEM-C-3 | M800-B-22 | 0.5 | no route | A/C switch (ACS) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 3-1437290-7 | TE | Superseal 1.0 26-way plug | 1.000 | ea |
| connector | 4-1437290-0 | TE | Superseal 1.0 34-way plug, Key 1 | 1.000 | ea |
| terminal | 3-1447221-4 | TE | Superseal 1.0 socket terminal, 20 AWG (0.5 sq mm) | 45.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (15)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | INJECTOR_BALLAST | M800 | The C30A injectors (NSX fuel injector) are low-impedance, but M800 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. |
| warn | NET_FAMILY | OEM-B-7 ↔ M800-B-20 | OEM-B-7 "Neutral switch (M/T) / gear position (A/T)" [digital_in] is wired to M800-B-20 "Analog Voltage Input 6" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-C-11 ↔ M800-B-21 | OEM-C-11 "Starter switch (STS)" [digital_in] is wired to M800-B-21 "AV7" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-C-3 ↔ M800-B-22 | OEM-C-3 "A/C switch (ACS)" [digital_in] is wired to M800-B-22 "AV8" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| info | NET_FAMILY | OEM-5-F5 ↔ M800-A-31 | OEM-5-F5 "Front VTEC solenoid valve" [high_side_out] is wired to M800-A-31 "AUX5" [switch_out]. Configure this output as high side. |
| info | NET_FAMILY | OEM-5-F7 ↔ M800-A-32 | OEM-5-F7 "Rear VTEC solenoid valve" [high_side_out] is wired to M800-A-32 "AUX6" [switch_out]. Configure this output as high side. |
| info | NET_FAMILY | OEM-A-10 ↔ M800-A-33 | OEM-A-10 "Front O2 sensor heater (HTCNTF)" [low_side_out] is wired to M800-A-33 "AUX7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-11 ↔ M800-A-29 | OEM-A-11 "EGR control solenoid" [low_side_out] is wired to M800-A-29 "INJ7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-12 ↔ M800-A-34 | OEM-A-12 "Rear O2 sensor heater (HTCNTR)" [low_side_out] is wired to M800-A-34 "AUX8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-13 ↔ M800-A-30 | OEM-A-13 "Check engine light (WARN)" [low_side_out] is wired to M800-A-30 "INJ8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-15 ↔ M800-A-1 | OEM-A-15 "A/C clutch relay (ACC)" [low_side_out] is wired to M800-A-1 "AUX2" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-18 ↔ M800-A-23 | OEM-A-18 "Radiator fan control (FANCNTR)" [low_side_out] is wired to M800-A-23 "AUX3" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-7 ↔ M800-A-24 | OEM-A-7 "Main relay" [low_side_out] is wired to M800-A-24 "AUX4" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-8 ↔ M800-A-18 | OEM-A-8 "Fuel pump relay 2 (FLR2)" [low_side_out] is wired to M800-A-18 "AUX1" [switch_out]. Configure this output as low side. |
| info | UNMAPPED | OEM | 18 optional OEM pins are not mapped: OEM-A-14 Chamber volume control solenoid (BPS); OEM-A-20 EVAP purge cut-off solenoid (PGS); OEM-A-9 Idle air control valve (IACV); OEM-B-13 CRNK 2P — TDC sensor signal; OEM-B-9 CYL 2P — CYP sensor 2 signal; OEM-C-10 Traction control; OEM-C-12 Traction control; OEM-C-4 Tachometer output (NEP); OEM-C-5 A/C pressure switch (PDSW); OEM-C-6 Traction control; OEM-C-7 Clutch switch (M/T); OEM-C-8 Traction control; OEM-C-9 Service check connector (SCS); OEM-D-3 Knock sensor — rear; OEM-D-4 Knock sensor — front; OEM-D-5 Traction control; OEM-D-6 Fuel pump voltage monitor (VFP); OEM-D-8 Ignition timing adjuster (IGADJ) |
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: unconfirmed. Confirm these before building: - Trigger pattern for Honda C30A not found in the ECU's docs (M150 engine-speed modes (datasheet 23514) list CBR250RR/F20C/J35A/K20/K20C1/K24AZ7/L15B7 — no C30A/C32B/NSX) Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-D 1: Battery backup (VBU): MoTeC M800 has no battery-constant input; not needed - OEM-B 13: CRNK 2P — TDC sensor signal: no free crank_vr/frequency_in input on MoTeC M800 - OEM-B 9: CYL 2P — CYP sensor 2 signal: no free cam_vr/cam_hall/frequency_in input on MoTeC M800 - OEM-D 4: Knock sensor — front: no free knock input on MoTeC M800 - OEM-D 3: Knock sensor — rear: no free knock input on MoTeC M800 - OEM-A 14: Chamber volume control solenoid (BPS): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-A 20: EVAP purge cut-off solenoid (PGS): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-A 9: Idle air control valve (IACV): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M800 - OEM-C 4: Tachometer output (NEP): no free tacho/frequency_out/low_side/ls_hs on MoTeC M800 - OEM-C 5: A/C pressure switch (PDSW): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C 7: Clutch switch (M/T): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C 9: Service check connector (SCS): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-D 8: Ignition timing adjuster (IGADJ): no free switch_in/frequency_in/analog_0_5 on MoTeC M800 - OEM-C 10: Traction control: not classified in the library; wire by hand - OEM-C 12: Traction control: not classified in the library; wire by hand - OEM-C 6: Traction control: not classified in the library; wire by hand - OEM-C 8: Traction control: not classified in the library; wire by hand - OEM-D 5: Traction control: not classified in the library; wire by hand - OEM-D 6: Fuel pump voltage monitor (VFP): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AEM EMS 30-1042 (Series 1) plug-and-play install manual — 1991-94 NSX | https://fancy-craft.firebaseapp.com/NSX/report/ecu/EMS_-_30-1042.pdf | archive | 2026-10-05 | 0cad10bc64b5 |
| 4 | vendor_doc | MoTeC M400/M600/M800/M880 Manual — Appendix L: Pin list by Function | https://starracecars.com/wp-content/uploads/resources/M400_M600_M800_M880_Manual_A5.pdf | archive | 2026-10-05 | b69bb8ffb674 |
| 4 | vendor_doc | MoTeC M800 OEM WRX56 Installation | https://motec.com.au | archive | 2026-10-05 | 2ca4be92bb65 |
| 3 | vendor_doc | dodo-upgrades: Honda OBD1 V6 ECU pinout | https://dodo-upgrades.nl/index.php/obd1-v6-pinouts/ | archive | 2026-10-05 | f9539af28904 |