Honda NSX NA1 1991-2005 (C30A) → Link G4X MonsoonX (auto)
Honda NSX NA1 1991-2005 (C30A) — Link — G4X MonsoonX
⚠ 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 | 5: read the Findings page before cutting any wire |
| Size of the job | 54 wires · 12 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-25 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | G4XMONSOONX-A-A5 | 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 | G4XMONSOONX-A-A25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | G4XMONSOONX-A-A34 | 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 | G4XMONSOONX-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-D-18 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-D-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-D-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-5V1-1 | G4XMONSOONX-A-A32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-B-15 | G4XMONSOONX-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-B-13 | G4XMONSOONX-A-A30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-B-11 | G4XMONSOONX-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-B-9 | G4XMONSOONX-A-A31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-D-4 | G4XMONSOONX-A-A6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-21 | G4XMONSOONX-A-A13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-22 | G4XMONSOONX-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-8 | G4XMONSOONX-A-A11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-6 | G4XMONSOONX-A-A10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-1 | G4XMONSOONX-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-3 | G4XMONSOONX-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-5 | G4XMONSOONX-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-2 | G4XMONSOONX-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-4 | G4XMONSOONX-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-6 | G4XMONSOONX-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-D-17 | G4XMONSOONX-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-D-11 | G4XMONSOONX-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-D-13 | G4XMONSOONX-A-A15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-8 | G4XMONSOONX-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-15 | G4XMONSOONX-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-18 | G4XMONSOONX-A-A19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-7 | G4XMONSOONX-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-5-F5 | RLY1-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | SP-14V-1 | RLY1-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | RLY1-R-COIL- | G4XMONSOONX-A-A27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-5-F7 | RLY2-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | SP-14V-1 | RLY2-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | SP-14V-1 | RLY2-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | RLY2-R-COIL- | G4XMONSOONX-A-A26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-D-14 | G4XMONSOONX-A-A33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-D-16 | G4XMONSOONX-A-A14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-D-15 | G4XMONSOONX-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-C-2 | G4XMONSOONX-A-A23 | 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 | G4XMONSOONX-A-A5 | G4XMONSOONX-A-A24 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | G4XMONSOONX-A-A24 | G4XMONSOONX-A-A32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 3 | G4XMONSOONX-A-A24 | RLY1-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 4 | G4XMONSOONX-A-A24 | RLY2-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 5 | G4XMONSOONX-A-A25 | G4XMONSOONX-A-A32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 6 | G4XMONSOONX-A-A25 | G4XMONSOONX-A-A5 | open (OL) | power ground must not touch +12 V supply | |
| 7 | G4XMONSOONX-A-A25 | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 8 | G4XMONSOONX-A-A25 | RLY2-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 9 | G4XMONSOONX-A-A32 | RLY1-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 10 | G4XMONSOONX-A-A32 | RLY2-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 11 | G4XMONSOONX-A-A5 | G4XMONSOONX-A-A32 | open (OL) | +12 V supply 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
G4XMONSOONX-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | Injector 4 | — | W33 | — | 0.5 | OEM-A-2 | — | — | — |
| A10 | Ignition 4 | — | W29 | — | 0.5 | OEM-B-6 | — | — | — |
| A11 | Ignition 3 | — | W28 | — | 0.5 | OEM-B-8 | — | — | — |
| A12 | Ignition 2 | — | W27 | — | 0.5 | OEM-A-22 | — | — | — |
| A13 | Ignition 1 | — | W26 | — | 0.5 | OEM-A-21 | — | — | — |
| A14 | Analog Volt 4 | — | W52 | — | 0.5 | OEM-D-16 | — | — | — |
| A15 | Analog Temp 1 | — | W38 | — | 0.5 | OEM-D-13 | — | — | — |
| A16 | Analog Temp 2 | — | W53 | — | 0.5 | OEM-D-15 | — | — | — |
| A17 | Analog Volt 1 | — | W36 | — | 0.5 | OEM-D-17 | — | — | — |
| A18 | Aux 4 | — | W42 | — | 0.5 | OEM-A-7 | — | — | — |
| A19 | Aux 3 | — | W41 | — | 0.5 | OEM-A-18 | — | — | — |
| A2 | Injector 3 | — | W32 | — | 0.5 | OEM-A-5 | — | — | — |
| A20 | Aux 2 | — | W40 | — | 0.5 | OEM-A-15 | — | — | — |
| A21 | Aux 1 | — | W39 | — | 0.5 | OEM-A-8 | — | — | — |
| A22 | Analog Volt 2 | — | W37 | — | 0.5 | OEM-D-11 | — | — | — |
| A23 | Digital Input 3 | — | W54 | — | 0.5 | OEM-C-2 | — | — | — |
| A24 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| A25 | System Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| A26 | Aux 6 | — | W50 | — | 0.5 | RLY2-R-COIL- | — | — | — |
| A27 | Aux 5 | — | W46 | — | 0.5 | RLY1-R-COIL- | — | — | — |
| A28 | CAN H | — | — | — | — | — | — | — | — |
| A29 | CAN L | — | — | — | — | — | — | — | — |
| A3 | Injector 2 | — | W31 | — | 0.5 | OEM-A-3 | — | — | — |
| A3 | Injector 2 | — | W35 | — | 0.5 | OEM-A-6 | — | — | — |
| A30 | Digital Input 1 | — | W22 | — | 0.5 | OEM-B-13 | — | — | — |
| A31 | Digital Input 2 | — | W24 | — | 0.5 | OEM-B-9 | — | — | — |
| A32 | +5V Out | — | W20 | — | 0.5 | SP-5V1-1 | — | — | — |
| A33 | Analog Volt 3 | — | W51 | — | 0.5 | OEM-D-14 | — | — | — |
| A34 | System Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| A4 | Injector 1 | — | W30 | — | 0.5 | OEM-A-1 | — | — | — |
| A4 | Injector 1 | — | W34 | — | 0.5 | OEM-A-4 | — | — | — |
| A5 | +14V ECU Power | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| A6 | Knock 1 / Digital Input 4 | — | W25 | — | 0.5 | OEM-D-4 | — | — | — |
| A7 | Shield Ground | — | — | — | — | — | — | — | — |
| A8 | Trigger 1 | — | W21 | — | 0.5 | OEM-B-15 | — | — | — |
| A9 | Trigger 2 | — | W23 | — | 0.5 | OEM-B-11 | — | — | — |
OEM-5
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| F2 | Front VTEC pressure switch | — | — | — | — | — | — | — | — |
| F4 | Rear VTEC pressure switch | — | — | — | — | — | — | — | — |
| F5 | Front VTEC solenoid valve | — | W43 | — | 0.5 | RLY1-R-OUT | — | — | — |
| F7 | Rear VTEC solenoid valve | — | W47 | — | 0.5 | RLY2-R-OUT | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W30 | — | 0.5 | G4XMONSOONX-A-A4 | — | — | — |
| 10 | Front O2 sensor heater (HTCNTF) | — | — | — | — | — | — | — | — |
| 11 | EGR control solenoid | — | — | — | — | — | — | — | — |
| 12 | Rear O2 sensor heater (HTCNTR) | — | — | — | — | — | — | — | — |
| 13 | Check engine light (WARN) | — | — | — | — | — | — | — | — |
| 14 | Chamber volume control solenoid (BPS) | — | — | — | — | — | — | — | — |
| 15 | A/C clutch relay (ACC) | — | W40 | — | 0.5 | G4XMONSOONX-A-A20 | — | — | — |
| 18 | Radiator fan control (FANCNTR) | — | W41 | — | 0.5 | G4XMONSOONX-A-A19 | — | — | — |
| 2 | Injector 4 | — | W33 | — | 0.5 | G4XMONSOONX-A-A1 | — | — | — |
| 20 | EVAP purge cut-off solenoid (PGS) | — | — | — | — | — | — | — | — |
| 21 | Ignition coil 1 | — | W26 | — | 0.5 | G4XMONSOONX-A-A13 | — | — | — |
| 22 | Ignition coil 2 | — | W27 | — | 0.5 | G4XMONSOONX-A-A12 | — | — | — |
| 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 | — | W31 | — | 0.5 | G4XMONSOONX-A-A3 | — | — | — |
| 4 | Injector 5 | — | W34 | — | 0.5 | G4XMONSOONX-A-A4 | — | — | — |
| 5 | Injector 3 | — | W32 | — | 0.5 | G4XMONSOONX-A-A2 | — | — | — |
| 6 | Injector 6 | — | W35 | — | 0.5 | G4XMONSOONX-A-A3 | — | — | — |
| 7 | Main relay | — | W42 | — | 0.5 | G4XMONSOONX-A-A18 | — | — | — |
| 8 | Fuel pump relay 2 (FLR2) | — | W39 | — | 0.5 | G4XMONSOONX-A-A21 | — | — | — |
| 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 | — | W23 | — | 0.5 | G4XMONSOONX-A-A9 | — | — | — |
| 12 | CYL 1M — CYP sensor 1 return | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | CRNK 2P — TDC sensor signal | — | W22 | — | 0.5 | G4XMONSOONX-A-A30 | — | — | — |
| 14 | CRNK 2M — TDC sensor return | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | CRNK 1P — crank sensor signal | — | W21 | — | 0.5 | G4XMONSOONX-A-A8 | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 5 | — | — | — | — | — | — | — | — |
| 6 | Ignition coil 4 | — | W29 | — | 0.5 | G4XMONSOONX-A-A10 | — | — | — |
| 7 | Neutral switch (M/T) / gear position (A/T) | — | — | — | — | — | — | — | — |
| 8 | Ignition coil 3 | — | W28 | — | 0.5 | G4XMONSOONX-A-A11 | — | — | — |
| 9 | CYL 2P — CYP sensor 2 signal | — | W24 | — | 0.5 | G4XMONSOONX-A-A31 | — | — | — |
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) | — | — | — | — | — | — | — | — |
| 12 | Traction control | — | — | — | — | — | — | — | — |
| 2 | Vehicle speed sensor (VSS) | — | W54 | — | 0.5 | G4XMONSOONX-A-A23 | — | — | — |
| 3 | A/C switch (ACS) | — | — | — | — | — | — | — | — |
| 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) | — | W37 | — | 0.5 | G4XMONSOONX-A-A22 | — | — | — |
| 12 | EGR lift sensor (EGRL) | — | — | — | — | — | — | — | — |
| 13 | Engine coolant temperature (ECT) | — | W38 | — | 0.5 | G4XMONSOONX-A-A15 | — | — | — |
| 14 | Primary O2 sensor | — | W51 | — | 0.5 | G4XMONSOONX-A-A33 | — | — | — |
| 15 | Intake air temperature (IAT) | — | W53 | — | 0.5 | G4XMONSOONX-A-A16 | — | — | — |
| 16 | Secondary O2 sensor | — | W52 | — | 0.5 | G4XMONSOONX-A-A14 | — | — | — |
| 17 | MAP sensor | — | W36 | — | 0.5 | G4XMONSOONX-A-A17 | — | — | — |
| 18 | +5V sensor supply (VCC) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 19 | +5V sensor supply (VCC) | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | +5V sensor supply (VCC) | — | W19 | — | 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 | — | W25 | — | 0.5 | G4XMONSOONX-A-A6 | — | — | — |
| 5 | Traction control | — | — | — | — | — | — | — | — |
| 6 | Fuel pump voltage monitor (VFP) | — | — | — | — | — | — | — | — |
| 8 | Ignition timing adjuster (IGADJ) | — | — | — | — | — | — | — | — |
| 9 | Alternator FR signal | — | — | — | — | — | — | — | — |
RLY1-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W45 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W46 | — | 0.5 | G4XMONSOONX-A-A27 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W44 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W43 | — | 0.5 | OEM-5-F5 | — | — | — |
RLY2-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W49 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W50 | — | 0.5 | G4XMONSOONX-A-A26 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W48 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W47 | — | 0.5 | OEM-5-F7 | — | — | — |
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 | G4XMONSOONX-A-A24 | — | — | — |
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 | G4XMONSOONX-A-A5 | — | — | — |
| 1 | — | — | W44 | — | 0.5 | RLY1-R-IN | — | — | — |
| 1 | — | — | W45 | — | 0.5 | RLY1-R-COIL+ | — | — | — |
| 1 | — | — | W48 | — | 0.5 | RLY2-R-IN | — | — | — |
| 1 | — | — | W49 | — | 0.5 | RLY2-R-COIL+ | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W17 | — | 0.5 | OEM-D-18 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-D-19 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-D-20 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | G4XMONSOONX-A-A32 | — | — | — |
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 | G4XMONSOONX-A-A25 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | G4XMONSOONX-A-A34 | — | — | — |
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 | — | — | — | single_source | |
| OEM-5-F4 | Rear VTEC pressure switch | digital_in | — | — | — | single_source | |
| OEM-5-F5 | Front VTEC solenoid valve | high_side_out | RLY1-R-OUT | Relay contact output (switched +12 V to load) | power_out | single_source | |
| OEM-5-F7 | Rear VTEC solenoid valve | high_side_out | RLY2-R-OUT | Relay contact output (switched +12 V to load) | power_out | single_source | |
| OEM-A-1 | Injector 1 | injector_out | G4XMONSOONX-A-A4 | Injector 1 | injector_out | single_source | |
| OEM-A-10 | Front O2 sensor heater (HTCNTF) | low_side_out | — | — | — | single_source | |
| OEM-A-11 | EGR control solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-12 | Rear O2 sensor heater (HTCNTR) | low_side_out | — | — | — | single_source | |
| OEM-A-13 | Check engine light (WARN) | low_side_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 | G4XMONSOONX-A-A20 | Aux 2 | low_side_out | single_source | |
| OEM-A-18 | Radiator fan control (FANCNTR) | low_side_out | G4XMONSOONX-A-A19 | Aux 3 | low_side_out | single_source | |
| OEM-A-2 | Injector 4 | injector_out | G4XMONSOONX-A-A1 | Injector 4 | 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 | G4XMONSOONX-A-A13 | Ignition 1 | ignition_out | single_source | |
| OEM-A-22 | Ignition coil 2 | ignition_out | G4XMONSOONX-A-A12 | Ignition 2 | ignition_out | single_source | |
| OEM-A-23 | Power ground (PG1) | ground | G4XMONSOONX-A-A25 + G4XMONSOONX-A-A34 | System Ground + System Ground | ground | single_source | |
| OEM-A-24 | Power ground (PG2) | ground | G4XMONSOONX-A-A25 + G4XMONSOONX-A-A34 | System Ground + System Ground | ground | single_source | |
| OEM-A-25 | ECU power (IGP1) | power_in | G4XMONSOONX-A-A5 + RLY1-R-COIL+ + RLY1-R-IN + RLY2-R-COIL+ + RLY2-R-IN | +14V ECU Power + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | single_source | |
| OEM-A-26 | Sensor ground (LG1) | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-A-3 | Injector 2 | injector_out | G4XMONSOONX-A-A3 | Injector 2 | injector_out | single_source | |
| OEM-A-4 | Injector 5 | injector_out | G4XMONSOONX-A-A4 | Injector 1 | injector_out | corroborated | |
| OEM-A-5 | Injector 3 | injector_out | G4XMONSOONX-A-A2 | Injector 3 | injector_out | single_source | |
| OEM-A-6 | Injector 6 | injector_out | G4XMONSOONX-A-A3 | Injector 2 | injector_out | single_source | |
| OEM-A-7 | Main relay | low_side_out | G4XMONSOONX-A-A18 | Aux 4 | low_side_out | single_source | |
| OEM-A-8 | Fuel pump relay 2 (FLR2) | low_side_out | G4XMONSOONX-A-A21 | Aux 1 | low_side_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 | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-B-11 | CYL 1P — CYP sensor 1 signal | trigger_in | G4XMONSOONX-A-A9 | Trigger 2 | trigger_in | single_source | |
| OEM-B-12 | CYL 1M — CYP sensor 1 return | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-B-13 | CRNK 2P — TDC sensor signal | trigger_in | G4XMONSOONX-A-A30 | Digital Input 1 | digital_in | single_source | |
| OEM-B-14 | CRNK 2M — TDC sensor return | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-B-15 | CRNK 1P — crank sensor signal | trigger_in | G4XMONSOONX-A-A8 | Trigger 1 | trigger_in | single_source | |
| OEM-B-16 | CRNK 1M — crank sensor return | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-B-2 | Chassis ground (LG2) | ground | G4XMONSOONX-A-A25 + G4XMONSOONX-A-A34 | System Ground + System Ground | ground | single_source | |
| OEM-B-3 | Ignition coil 6 | ignition_out | — | — | — | single_source | |
| OEM-B-4 | Ignition coil 5 | ignition_out | — | — | — | single_source | |
| OEM-B-6 | Ignition coil 4 | ignition_out | G4XMONSOONX-A-A10 | Ignition 4 | ignition_out | single_source | |
| OEM-B-7 | Neutral switch (M/T) / gear position (A/T) | digital_in | — | — | — | single_source | |
| OEM-B-8 | Ignition coil 3 | ignition_out | G4XMONSOONX-A-A11 | Ignition 3 | ignition_out | single_source | |
| OEM-B-9 | CYL 2P — CYP sensor 2 signal | trigger_in | G4XMONSOONX-A-A31 | Digital Input 2 | digital_in | single_source | |
| OEM-C-1 | ECU power (IGP2) | power_in | G4XMONSOONX-A-A5 + RLY1-R-COIL+ + RLY1-R-IN + RLY2-R-COIL+ + RLY2-R-IN | +14V ECU Power + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | single_source | |
| OEM-C-10 | Traction control | — | — | — | — | single_source | |
| OEM-C-11 | Starter switch (STS) | digital_in | — | — | — | single_source | |
| OEM-C-12 | Traction control | — | — | — | — | single_source | |
| OEM-C-2 | Vehicle speed sensor (VSS) | digital_in | G4XMONSOONX-A-A23 | Digital Input 3 | digital_in | single_source | |
| OEM-C-3 | A/C switch (ACS) | digital_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 | G4XMONSOONX-A-A22 | Analog Volt 2 | analog_in | single_source | |
| OEM-D-12 | EGR lift sensor (EGRL) | analog_in | — | — | — | single_source | |
| OEM-D-13 | Engine coolant temperature (ECT) | temp_in | G4XMONSOONX-A-A15 | Analog Temp 1 | temp_in | single_source | |
| OEM-D-14 | Primary O2 sensor | lambda_nb_in | G4XMONSOONX-A-A33 | Analog Volt 3 | analog_in | single_source | |
| OEM-D-15 | Intake air temperature (IAT) | temp_in | G4XMONSOONX-A-A16 | Analog Temp 2 | temp_in | single_source | |
| OEM-D-16 | Secondary O2 sensor | lambda_nb_in | G4XMONSOONX-A-A14 | Analog Volt 4 | analog_in | single_source | |
| OEM-D-17 | MAP sensor | analog_in | G4XMONSOONX-A-A17 | Analog Volt 1 | analog_in | single_source | |
| OEM-D-18 | +5V sensor supply (VCC) | vref | G4XMONSOONX-A-A32 | +5V Out | vref | single_source | |
| OEM-D-19 | +5V sensor supply (VCC) | vref | G4XMONSOONX-A-A32 | +5V Out | vref | single_source | |
| OEM-D-20 | +5V sensor supply (VCC) | vref | G4XMONSOONX-A-A32 | +5V Out | vref | single_source | |
| OEM-D-21 | Sensor ground (SG) | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-D-22 | Sensor ground (SG) | sensor_ground | G4XMONSOONX-A-A24 | Sensor Ground | sensor_ground | single_source | |
| OEM-D-3 | Knock sensor — rear | knock_in | — | — | — | single_source | |
| OEM-D-4 | Knock sensor — front | knock_in | G4XMONSOONX-A-A6 | Knock 1 / Digital Input 4 | 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 | — | — | — | 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 | G4XMONSOONX-A-A5 | 0.85 | no route | +14V ECU Power | — | |
| 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 | G4XMONSOONX-A-A25 | 0.85 | no route | System Ground | — | |
| W8 | SP-GND-1 | G4XMONSOONX-A-A34 | 0.85 | no route | System Ground | — | |
| 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 | G4XMONSOONX-A-A24 | 0.5 | no route | Sensor Ground | — | |
| W17 | OEM-D-18 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W18 | OEM-D-19 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W19 | OEM-D-20 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W20 | SP-5V1-1 | G4XMONSOONX-A-A32 | 0.5 | no route | +5V Out | — | |
| W21 | OEM-B-15 | G4XMONSOONX-A-A8 | 0.5 | no route | CRNK 1P — crank sensor signal | — | |
| W22 | OEM-B-13 | G4XMONSOONX-A-A30 | 0.5 | no route | CRNK 2P — TDC sensor signal | — | |
| W23 | OEM-B-11 | G4XMONSOONX-A-A9 | 0.5 | no route | CYL 1P — CYP sensor 1 signal | — | |
| W24 | OEM-B-9 | G4XMONSOONX-A-A31 | 0.5 | no route | CYL 2P — CYP sensor 2 signal | — | |
| W25 | OEM-D-4 | G4XMONSOONX-A-A6 | 0.5 | no route | Knock sensor — front | — | |
| W26 | OEM-A-21 | G4XMONSOONX-A-A13 | 0.5 | no route | Ignition coil 1 | — | |
| W27 | OEM-A-22 | G4XMONSOONX-A-A12 | 0.5 | no route | Ignition coil 2 | — | |
| W28 | OEM-B-8 | G4XMONSOONX-A-A11 | 0.5 | no route | Ignition coil 3 | — | |
| W29 | OEM-B-6 | G4XMONSOONX-A-A10 | 0.5 | no route | Ignition coil 4 | — | |
| W30 | OEM-A-1 | G4XMONSOONX-A-A4 | 0.5 | no route | Injector 1 | — | |
| W31 | OEM-A-3 | G4XMONSOONX-A-A3 | 0.5 | no route | Injector 2 | — | |
| W32 | OEM-A-5 | G4XMONSOONX-A-A2 | 0.5 | no route | Injector 3 | — | |
| W33 | OEM-A-2 | G4XMONSOONX-A-A1 | 0.5 | no route | Injector 4 | — | |
| W34 | OEM-A-4 | G4XMONSOONX-A-A4 | 0.5 | no route | Injector 5 | — | |
| W35 | OEM-A-6 | G4XMONSOONX-A-A3 | 0.5 | no route | Injector 6 | — | |
| W36 | OEM-D-17 | G4XMONSOONX-A-A17 | 0.5 | no route | MAP sensor | — | |
| W37 | OEM-D-11 | G4XMONSOONX-A-A22 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W38 | OEM-D-13 | G4XMONSOONX-A-A15 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W39 | OEM-A-8 | G4XMONSOONX-A-A21 | 0.5 | no route | Fuel pump relay 2 (FLR2) | — | |
| W40 | OEM-A-15 | G4XMONSOONX-A-A20 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W41 | OEM-A-18 | G4XMONSOONX-A-A19 | 0.5 | no route | Radiator fan control (FANCNTR) | — | |
| W42 | OEM-A-7 | G4XMONSOONX-A-A18 | 0.5 | no route | Main relay | — | |
| W43 | OEM-5-F5 | RLY1-R-OUT | 0.5 | no route | Front VTEC solenoid valve | — | |
| W44 | SP-14V-1 | RLY1-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W45 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W46 | RLY1-R-COIL- | G4XMONSOONX-A-A27 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W47 | OEM-5-F7 | RLY2-R-OUT | 0.5 | no route | Rear VTEC solenoid valve | — | |
| W48 | SP-14V-1 | RLY2-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W49 | SP-14V-1 | RLY2-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W50 | RLY2-R-COIL- | G4XMONSOONX-A-A26 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W51 | OEM-D-14 | G4XMONSOONX-A-A33 | 0.5 | no route | Primary O2 sensor | — | |
| W52 | OEM-D-16 | G4XMONSOONX-A-A14 | 0.5 | no route | Secondary O2 sensor | — | |
| W53 | OEM-D-15 | G4XMONSOONX-A-A16 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W54 | OEM-C-2 | G4XMONSOONX-A-A23 | 0.5 | no route | Vehicle speed sensor (VSS) | — |
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 (8)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | INJECTOR_BALLAST | G4X MonsoonX | The C30A injectors (NSX fuel injector) are low-impedance, but G4X MonsoonX drives saturated (high-Z) injectors only. Add a ballast resistor pack in series with each injector, or use an ECU with low-Z / peak-and-hold injector drivers. |
| error | NET_MERGED | G4XMONSOONX-A-A3 + OEM-A-3 + OEM-A-6 | 2 different OEM functions share one net: OEM-A-3 Injector 2; OEM-A-6 Injector 6 |
| error | NET_MERGED | G4XMONSOONX-A-A4 + OEM-A-1 + OEM-A-4 | 2 different OEM functions share one net: OEM-A-1 Injector 1; OEM-A-4 Injector 5 |
| error | REQUIRED_UNMAPPED | OEM-B-3 | Required OEM function "Ignition coil 6" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-B-4 | Required OEM function "Ignition coil 5" (ignition_out) is not connected to the new ECU. |
| warn | NET_FAMILY | OEM-B-13 ↔ G4XMONSOONX-A-A30 | OEM-B-13 "CRNK 2P — TDC sensor signal" [trigger_in] is wired to G4XMONSOONX-A-A30 "Digital Input 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| warn | NET_FAMILY | OEM-B-9 ↔ G4XMONSOONX-A-A31 | OEM-B-9 "CYL 2P — CYP sensor 2 signal" [trigger_in] is wired to G4XMONSOONX-A-A31 "Digital Input 2" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| info | UNMAPPED | OEM | 26 optional OEM pins are not mapped: OEM-5-F2 Front VTEC pressure switch; OEM-5-F4 Rear VTEC pressure switch; OEM-A-10 Front O2 sensor heater (HTCNTF); OEM-A-11 EGR control solenoid; OEM-A-12 Rear O2 sensor heater (HTCNTR); OEM-A-13 Check engine light (WARN); 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-7 Neutral switch (M/T) / gear position (A/T); OEM-C-10 Traction control; OEM-C-11 Starter switch (STS); OEM-C-12 Traction control; OEM-C-3 A/C switch (ACS); 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-12 EGR lift sensor (EGRL); OEM-D-3 Knock sensor — rear; OEM-D-5 Traction control; OEM-D-6 Fuel pump voltage monitor (VFP); OEM-D-8 Ignition timing adjuster (IGADJ); OEM-D-9 Alternator FR signal |
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
Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-B 4: Ignition coil 5: no free ignition output on Link G4X MonsoonX - OEM-B 3: Ignition coil 6: no free ignition output on Link G4X MonsoonX Not wired: - OEM-D 1: Battery backup (VBU): Link G4X MonsoonX has no battery-constant input; not needed - OEM-D 3: Knock sensor — rear: no free knock input on Link G4X MonsoonX - OEM-A 10: Front O2 sensor heater (HTCNTF): no free heater_low_side/low_side/relay_control/ls_hs/injector on Link G4X MonsoonX - OEM-A 12: Rear O2 sensor heater (HTCNTR): no free heater_low_side/low_side/relay_control/ls_hs/injector on Link G4X MonsoonX - OEM-A 11: EGR control solenoid: no free low_side/relay_control/heater_low_side/ls_hs/injector on Link G4X MonsoonX - OEM-A 13: Check engine light (WARN): no free low_side/relay_control/heater_low_side/ls_hs/injector on Link G4X MonsoonX - OEM-A 14: Chamber volume control solenoid (BPS): no free low_side/relay_control/heater_low_side/ls_hs/injector on Link G4X MonsoonX - OEM-A 20: EVAP purge cut-off solenoid (PGS): no free low_side/relay_control/heater_low_side/ls_hs/injector on Link G4X MonsoonX - OEM-A 9: Idle air control valve (IACV): no free low_side/relay_control/heater_low_side/ls_hs/injector on Link G4X MonsoonX - OEM-C 4: Tachometer output (NEP): no free tacho/frequency_out/low_side/ls_hs on Link G4X MonsoonX - OEM-D 12: EGR lift sensor (EGRL): no free analog_0_5 on Link G4X MonsoonX - OEM-D 9: Alternator FR signal: no free frequency_in/switch_in on Link G4X MonsoonX - OEM-5 F2: Front VTEC pressure switch: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-5 F4: Rear VTEC pressure switch: no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-B 7: Neutral switch (M/T) / gear position (A/T): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-C 11: Starter switch (STS): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-C 3: A/C switch (ACS): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-C 5: A/C pressure switch (PDSW): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-C 7: Clutch switch (M/T): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-C 9: Service check connector (SCS): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - OEM-D 8: Ignition timing adjuster (IGADJ): no free switch_in/frequency_in/analog_0_5 on Link G4X MonsoonX - 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 | Bosch relay catalogue (mini ISO relays) | https://www.bosch-ibusiness.com/media/downloads/kataloge/relay/2025_10_bosch_relay_catalogue.pdf | archive | 2026-10-05 | 20344cff1ef3 |
| 4 | community_copy | Honda S2000 Service Manual 2000–2008, Fuel and Emissions Systems | https://www.s2000.wiki/view/images/7/7f/Service_Manual_2000-2008.pdf | archive | 2026-10-05 | a470cfc928e9 |
| 4 | vendor_doc | Link: G4X MonsoonX quickstart + RET 115-1000 | https://linkecu.com/documentation/MonsoonXQuickstartGuide.pdf | archive | 2026-10-05 | e8d432b273d6 |
| 4 | vendor_doc | Omron G8V-RH-1C7T-R-DC12 high-current micro 280 automotive relay datasheet | https://www.alldatasheet.com/datasheet-pdf/pdf/333797/OMRON/G8V-RH-1C7T-R-DC12.html | — | 2026-10-05 | 764a0505a941 |
| 3 | community_copy | YourSpec: Link G4X MonsoonX flying-lead harness wiring list | https://wpm.yourspec.com/projects/view/1469 | — | — | — |
| 3 | vendor_doc | dodo-upgrades: Honda OBD1 V6 ECU pinout | https://dodo-upgrades.nl/index.php/obd1-v6-pinouts/ | archive | 2026-10-05 | f9539af28904 |