Honda NSX NA1 1991-2005 (C30A) → MaxxECU MaxxECU PRO REV10+ (auto)
Honda NSX NA1 1991-2005 (C30A) — MaxxECU — MaxxECU PRO
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-07
Before you start
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 75 wires · 13 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-A-25 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-C-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MAXXECUPRO-C1-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-23 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-24 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-B-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-26 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-B-10 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-B-12 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-B-14 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-B-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-D-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-D-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-D-18 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-D-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-D-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | SP-5V1-1 | MAXXECUPRO-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-15 | MAXXECUPRO-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-11 | MAXXECUPRO-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-D-4 | MAXXECUPRO-C4-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-D-3 | MAXXECUPRO-C4-F3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-21 | MAXXECUPRO-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-22 | MAXXECUPRO-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-B-8 | MAXXECUPRO-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-6 | MAXXECUPRO-C1-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-4 | MAXXECUPRO-C1-C2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B-3 | MAXXECUPRO-C1-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-1 | MAXXECUPRO-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-3 | MAXXECUPRO-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-5 | MAXXECUPRO-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-2 | MAXXECUPRO-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-4 | MAXXECUPRO-C1-M3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-6 | MAXXECUPRO-C1-L3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-8 | MAXXECUPRO-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-15 | MAXXECUPRO-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-18 | MAXXECUPRO-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-7 | MAXXECUPRO-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-5-F5 | MAXXECUPRO-C3-G4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-5-F7 | MAXXECUPRO-C3-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-10 | MAXXECUPRO-C1-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A-12 | MAXXECUPRO-C3-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-11 | MAXXECUPRO-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-13 | MAXXECUPRO-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-14 | MAXXECUPRO-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-20 | MAXXECUPRO-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-9 | MAXXECUPRO-C4-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-C-4 | MAXXECUPRO-C4-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-D-17 | MAXXECUPRO-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-D-11 | MAXXECUPRO-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-D-14 | MAXXECUPRO-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-D-16 | MAXXECUPRO-C3-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-D-13 | MAXXECUPRO-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-D-15 | MAXXECUPRO-C1-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-D-12 | MAXXECUPRO-C3-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-C-2 | MAXXECUPRO-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-D-9 | MAXXECUPRO-C1-K4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-5-F2 | MAXXECUPRO-C3-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-5-F4 | MAXXECUPRO-C3-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-B-7 | MAXXECUPRO-C4-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-C-11 | MAXXECUPRO-C4-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-C-3 | MAXXECUPRO-C4-E1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W72 | OEM-C-5 | MAXXECUPRO-C4-E2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W73 | OEM-C-7 | MAXXECUPRO-C3-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W74 | OEM-C-9 | MAXXECUPRO-C3-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W75 | OEM-D-8 | MAXXECUPRO-C3-D2 | 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 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-H1 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 3 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-G1 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-M4 | open (OL) | power ground must not touch +12 V supply | |
| 5 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-G1 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECUPRO-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | GPO 5 | — | W52 | — | 0.5 | OEM-A-11 | — | — | — |
| A2 | IGN 1 | — | W32 | — | 0.5 | OEM-A-21 | — | — | — |
| A3 | IGN 2 | — | W33 | — | 0.5 | OEM-A-22 | — | — | — |
| A4 | GPO 8/TACHO | — | W55 | — | 0.5 | OEM-A-20 | — | — | — |
| B1 | GPO 6 | — | W53 | — | 0.5 | OEM-A-13 | — | — | — |
| B2 | IGN 3 | — | W34 | — | 0.5 | OEM-B-8 | — | — | — |
| B3 | IGN 4 | — | W35 | — | 0.5 | OEM-B-6 | — | — | — |
| B4 | GPO 1 | — | W44 | — | 0.5 | OEM-A-8 | — | — | — |
| C1 | GPO 7 | — | W54 | — | 0.5 | OEM-A-14 | — | — | — |
| C2 | IGN 5 | — | W36 | — | 0.5 | OEM-B-4 | — | — | — |
| C3 | IGN 6 | — | W37 | — | 0.5 | OEM-B-3 | — | — | — |
| C4 | GPO 2 | — | W45 | — | 0.5 | OEM-A-15 | — | — | — |
| D1 | WBO2 Heater- | — | W50 | — | 0.5 | OEM-A-10 | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W46 | — | 0.5 | OEM-A-18 | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W47 | — | 0.5 | OEM-A-7 | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W27 | — | 0.5 | SP-5V1-1 | — | — | — |
| G2 | TPS/AIN | — | W59 | — | 0.5 | OEM-D-11 | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W28 | — | 0.5 | OEM-B-15 | — | — | — |
| H4 | HOME | — | W29 | — | 0.5 | OEM-B-11 | — | — | — |
| J1 | AIN 1 (temperature) | — | W62 | — | 0.5 | OEM-D-13 | — | — | — |
| J2 | AIN 2 (temperature) | — | W63 | — | 0.5 | OEM-D-15 | — | — | — |
| J3 | AIN 3 (0-5V) | — | W58 | — | 0.5 | OEM-D-17 | — | — | — |
| J4 | AIN 4 (0-5V) | — | W60 | — | 0.5 | OEM-D-14 | — | — | — |
| K1 | INJ 1 | — | W38 | — | 0.5 | OEM-A-1 | — | — | — |
| K2 | INJ 2 | — | W39 | — | 0.5 | OEM-A-3 | — | — | — |
| K3 | DIN/VR 1 | — | W65 | — | 0.5 | OEM-C-2 | — | — | — |
| K4 | DIN/VR 2 | — | W66 | — | 0.5 | OEM-D-9 | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | W43 | — | 0.5 | OEM-A-6 | — | — | — |
| L4 | Engine GND | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W40 | — | 0.5 | OEM-A-5 | — | — | — |
| M2 | INJ 4 | — | W41 | — | 0.5 | OEM-A-2 | — | — | — |
| M3 | INJ 5 | — | W42 | — | 0.5 | OEM-A-4 | — | — | — |
| M4 | +12V ECU power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECUPRO-C2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | EGT 1+ | — | — | — | — | — | — | — | — |
| A2 | EGT 2+ | — | — | — | — | — | — | — | — |
| A3 | EGT 3+ | — | — | — | — | — | — | — | — |
| A4 | EGT 4+ | — | — | — | — | — | — | — | — |
| B1 | EGT 1- | — | — | — | — | — | — | — | — |
| B2 | EGT 2- | — | — | — | — | — | — | — | — |
| B3 | EGT 3- | — | — | — | — | — | — | — | — |
| B4 | EGT 4- | — | — | — | — | — | — | — | — |
| C1 | EGT 5+ | — | — | — | — | — | — | — | — |
| C2 | EGT 6+ | — | — | — | — | — | — | — | — |
| C3 | EGT 7+ | — | — | — | — | — | — | — | — |
| C4 | EGT 8+ | — | — | — | — | — | — | — | — |
| D1 | EGT 5- | — | — | — | — | — | — | — | — |
| D2 | EGT 6- | — | — | — | — | — | — | — | — |
| D3 | EGT 7- | — | — | — | — | — | — | — | — |
| D4 | EGT 8- | — | — | — | — | — | — | — | — |
| E1 | EGT 9+ | — | — | — | — | — | — | — | — |
| E2 | EGT 10+ | — | — | — | — | — | — | — | — |
| E3 | EGT 11+ | — | — | — | — | — | — | — | — |
| E4 | EGT 12+ | — | — | — | — | — | — | — | — |
| F1 | EGT 9- | — | — | — | — | — | — | — | — |
| F2 | EGT 10- | — | — | — | — | — | — | — | — |
| F3 | EGT 11- | — | — | — | — | — | — | — | — |
| F4 | EGT 12- | — | — | — | — | — | — | — | — |
| H1 | Engine ground 3 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| H2 | Engine ground 3 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| H3 | Engine ground 3 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUPRO-C3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | DIN/VR 4 | — | W73 | — | 0.5 | OEM-C-7 | — | — | — |
| A2 | DIN/VR 5 | — | W74 | — | 0.5 | OEM-C-9 | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W67 | — | 0.5 | OEM-5-F2 | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W68 | — | 0.5 | OEM-5-F4 | — | — | — |
| B1 | WBO2 2 RCAL | — | — | — | — | — | — | — | — |
| B2 | WBO2 2 IP | — | — | — | — | — | — | — | — |
| B3 | WBO2 2 VS | — | — | — | — | — | — | — | — |
| B4 | WBO2 2 COM | — | — | — | — | — | — | — | — |
| C1 | WBO2 2 Shield | — | — | — | — | — | — | — | — |
| C2 | +5V SENSOR SUPPLY 2 | — | — | — | — | — | — | — | — |
| C3 | ANALOG IN 5 (0-5V) | — | W61 | — | 0.5 | OEM-D-16 | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | W64 | — | 0.5 | OEM-D-12 | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | W75 | — | 0.5 | OEM-D-8 | — | — | — |
| D3 | ANALOG IN 8 (0-5V) | — | — | — | — | — | — | — | — |
| D4 | GPO 20 (12V) | — | — | — | — | — | — | — | — |
| E1 | GPO 10/WBO2 2 HTR | — | W51 | — | 0.5 | OEM-A-12 | — | — | — |
| E2 | ANALOG IN 9 (0-5V) | — | — | — | — | — | — | — | — |
| E3 | ANALOG IN 10 (0-5V) | — | — | — | — | — | — | — | — |
| E4 | GPO 21 (12V) | — | — | — | — | — | — | — | — |
| F1 | INJECTOR OUT 15 | — | — | — | — | — | — | — | — |
| F2 | ANALOG IN 11 (0-5V) | — | — | — | — | — | — | — | — |
| F3 | ANALOG IN 12 (0-5V) | — | — | — | — | — | — | — | — |
| F4 | GPO 22 (12V) | — | — | — | — | — | — | — | — |
| G1 | INJECTOR OUT 14 | — | — | — | — | — | — | — | — |
| G2 | IGNITION OUT 11 | — | — | — | — | — | — | — | — |
| G3 | IGNITION OUT 9 | — | — | — | — | — | — | — | — |
| G4 | GPO 15 (12V) | — | W48 | — | 0.5 | OEM-5-F5 | — | — | — |
| H1 | INJECTOR OUT 13 | — | — | — | — | — | — | — | — |
| H2 | IGNITION OUT 12 | — | — | — | — | — | — | — | — |
| H3 | IGNITION OUT 10 | — | — | — | — | — | — | — | — |
| H4 | GPO 16 (12V) | — | W49 | — | 0.5 | OEM-5-F7 | — | — | — |
| J1 | INJECTOR OUT 16 | — | — | — | — | — | — | — | — |
| J2 | SENSOR GND | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| J4 | GPO 17 (12V) | — | — | — | — | — | — | — | — |
| K1 | INJECTOR OUT 10 | — | — | — | — | — | — | — | — |
| K2 | INJECTOR OUT 9 | — | — | — | — | — | — | — | — |
| K3 | KEY IN 12V | — | — | — | — | — | — | — | — |
| K4 | GPO 18 (12V) | — | — | — | — | — | — | — | — |
| L1 | INJECTOR OUT 11 | — | — | — | — | — | — | — | — |
| L2 | GPO 12/MOTOR 1 + | — | — | — | — | — | — | — | — |
| L3 | GPO 11/MOTOR 1 - | — | — | — | — | — | — | — | — |
| L4 | ENGINE GROUND 2 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJECTOR OUT 12 | — | — | — | — | — | — | — | — |
| M2 | GPO 13/MOTOR 2 + | — | — | — | — | — | — | — | — |
| M3 | GPO 14/MOTOR 2 - | — | — | — | — | — | — | — | — |
| M4 | 12V ECU 2 | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECUPRO-C4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | CAN 2 H | — | — | — | — | — | — | — | — |
| A2 | CAN 2 L | — | — | — | — | — | — | — | — |
| A3 | 0-5V out 1 | — | — | — | — | — | — | — | — |
| A4 | 0-5V out 2 | — | — | — | — | — | — | — | — |
| B1 | AIN 18 (0-5V) | — | — | — | — | — | — | — | — |
| B2 | AIN 17 (0-5V) | — | — | — | — | — | — | — | — |
| B3 | AIN 16 (0-5V) | — | — | — | — | — | — | — | — |
| B4 | AIN 15 (0-5V) | — | — | — | — | — | — | — | — |
| C1 | AIN 14 (0-5V) | — | — | — | — | — | — | — | — |
| C2 | AIN 13 (0-5V) | — | — | — | — | — | — | — | — |
| C3 | AIN 19 (temp) | — | — | — | — | — | — | — | — |
| C4 | AIN 20 (temp) | — | — | — | — | — | — | — | — |
| D1 | AIN 21 (temp) | — | — | — | — | — | — | — | — |
| D2 | AIN 22 (temp) | — | — | — | — | — | — | — | — |
| D3 | DIN 8 (switch) | — | W69 | — | 0.5 | OEM-B-7 | — | — | — |
| D4 | DIN 9 (switch) | — | W70 | — | 0.5 | OEM-C-11 | — | — | — |
| E1 | DIN 10 (switch) | — | W71 | — | 0.5 | OEM-C-3 | — | — | — |
| E2 | DIN 11 (switch) | — | W72 | — | 0.5 | OEM-C-5 | — | — | — |
| E3 | +5V sensor supply 3 | — | — | — | — | — | — | — | — |
| E4 | 5-10V sensor supply | — | — | — | — | — | — | — | — |
| F1 | GPO 23-30 flyback | — | — | — | — | — | — | — | — |
| F2 | Knock 1 | — | W30 | — | 0.5 | OEM-D-4 | — | — | — |
| F3 | Knock 2 | — | W31 | — | 0.5 | OEM-D-3 | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W56 | — | 0.5 | OEM-A-9 | — | — | — |
| G2 | GPO 24 | — | W57 | — | 0.5 | OEM-C-4 | — | — | — |
| G3 | GPO 25 | — | — | — | — | — | — | — | — |
| G4 | GPO 26 | — | — | — | — | — | — | — | — |
| H1 | GPO 27 | — | — | — | — | — | — | — | — |
| H2 | GPO 28 | — | — | — | — | — | — | — | — |
| H3 | GPO 29 | — | — | — | — | — | — | — | — |
| H4 | GPO 30 | — | — | — | — | — | — | — | — |
OEM-5
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| F2 | Front VTEC pressure switch | — | W67 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| F4 | Rear VTEC pressure switch | — | W68 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| F5 | Front VTEC solenoid valve | — | W48 | — | 0.5 | MAXXECUPRO-C3-G4 | — | — | — |
| F7 | Rear VTEC solenoid valve | — | W49 | — | 0.5 | MAXXECUPRO-C3-H4 | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector 1 | — | W38 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| 10 | Front O2 sensor heater (HTCNTF) | — | W50 | — | 0.5 | MAXXECUPRO-C1-D1 | — | — | — |
| 11 | EGR control solenoid | — | W52 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
| 12 | Rear O2 sensor heater (HTCNTR) | — | W51 | — | 0.5 | MAXXECUPRO-C3-E1 | — | — | — |
| 13 | Check engine light (WARN) | — | W53 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| 14 | Chamber volume control solenoid (BPS) | — | W54 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| 15 | A/C clutch relay (ACC) | — | W45 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| 18 | Radiator fan control (FANCNTR) | — | W46 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
| 2 | Injector 4 | — | W41 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| 20 | EVAP purge cut-off solenoid (PGS) | — | W55 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| 21 | Ignition coil 1 | — | W32 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| 22 | Ignition coil 2 | — | W33 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| 23 | Power ground (PG1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | Power ground (PG2) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | ECU power (IGP1) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | Sensor ground (LG1) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Injector 2 | — | W39 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| 4 | Injector 5 | — | W42 | — | 0.5 | MAXXECUPRO-C1-M3 | — | — | — |
| 5 | Injector 3 | — | W40 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
| 6 | Injector 6 | — | W43 | — | 0.5 | MAXXECUPRO-C1-L3 | — | — | — |
| 7 | Main relay | — | W47 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| 8 | Fuel pump relay 2 (FLR2) | — | W44 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| 9 | Idle air control valve (IACV) | — | W56 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
OEM-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | CYL 2M — CYP sensor 2 return | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 11 | CYL 1P — CYP sensor 1 signal | — | W29 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| 12 | CYL 1M — CYP sensor 1 return | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | CRNK 2P — TDC sensor signal | — | — | — | — | — | — | — | — |
| 14 | CRNK 2M — TDC sensor return | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | CRNK 1P — crank sensor signal | — | W28 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
| 16 | CRNK 1M — crank sensor return | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Chassis ground (LG2) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Ignition coil 6 | — | W37 | — | 0.5 | MAXXECUPRO-C1-C3 | — | — | — |
| 4 | Ignition coil 5 | — | W36 | — | 0.5 | MAXXECUPRO-C1-C2 | — | — | — |
| 6 | Ignition coil 4 | — | W35 | — | 0.5 | MAXXECUPRO-C1-B3 | — | — | — |
| 7 | Neutral switch (M/T) / gear position (A/T) | — | W69 | — | 0.5 | MAXXECUPRO-C4-D3 | — | — | — |
| 8 | Ignition coil 3 | — | W34 | — | 0.5 | MAXXECUPRO-C1-B2 | — | — | — |
| 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) | — | W70 | — | 0.5 | MAXXECUPRO-C4-D4 | — | — | — |
| 12 | Traction control | — | — | — | — | — | — | — | — |
| 2 | Vehicle speed sensor (VSS) | — | W65 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| 3 | A/C switch (ACS) | — | W71 | — | 0.5 | MAXXECUPRO-C4-E1 | — | — | — |
| 4 | Tachometer output (NEP) | — | W57 | — | 0.5 | MAXXECUPRO-C4-G2 | — | — | — |
| 5 | A/C pressure switch (PDSW) | — | W72 | — | 0.5 | MAXXECUPRO-C4-E2 | — | — | — |
| 6 | Traction control | — | — | — | — | — | — | — | — |
| 7 | Clutch switch (M/T) | — | W73 | — | 0.5 | MAXXECUPRO-C3-A1 | — | — | — |
| 8 | Traction control | — | — | — | — | — | — | — | — |
| 9 | Service check connector (SCS) | — | W74 | — | 0.5 | MAXXECUPRO-C3-A2 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Battery backup (VBU) | — | — | — | — | — | — | — | — |
| 11 | Throttle position sensor (TPS) | — | W59 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| 12 | EGR lift sensor (EGRL) | — | W64 | — | 0.5 | MAXXECUPRO-C3-D1 | — | — | — |
| 13 | Engine coolant temperature (ECT) | — | W62 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
| 14 | Primary O2 sensor | — | W60 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| 15 | Intake air temperature (IAT) | — | W63 | — | 0.5 | MAXXECUPRO-C1-J2 | — | — | — |
| 16 | Secondary O2 sensor | — | W61 | — | 0.5 | MAXXECUPRO-C3-C3 | — | — | — |
| 17 | MAP sensor | — | W58 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
| 18 | +5V sensor supply (VCC) | — | W24 | — | 0.5 | SP-5V1-1 | — | — | — |
| 19 | +5V sensor supply (VCC) | — | W25 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | +5V sensor supply (VCC) | — | W26 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor ground (SG) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Sensor ground (SG) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Knock sensor — rear | — | W31 | — | 0.5 | MAXXECUPRO-C4-F3 | — | — | — |
| 4 | Knock sensor — front | — | W30 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| 5 | Traction control | — | — | — | — | — | — | — | — |
| 6 | Fuel pump voltage monitor (VFP) | — | — | — | — | — | — | — | — |
| 8 | Ignition timing adjuster (IGADJ) | — | W75 | — | 0.5 | MAXXECUPRO-C3-D2 | — | — | — |
| 9 | Alternator FR signal | — | W66 | — | 0.5 | MAXXECUPRO-C1-K4 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-A-26 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-B-10 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-B-12 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-B-14 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-B-16 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-D-21 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-D-22 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
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 | MAXXECUPRO-C1-M4 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MAXXECUPRO-C3-M4 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W24 | — | 0.5 | OEM-D-18 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | OEM-D-19 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | OEM-D-20 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-24 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MAXXECUPRO-C1-L4 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUPRO-C2-H1 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUPRO-C2-H2 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MAXXECUPRO-C2-H3 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | MAXXECUPRO-C3-L4 | — | — | — |
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 | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | single_source | |
| OEM-5-F4 | Rear VTEC pressure switch | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | single_source | |
| OEM-5-F5 | Front VTEC solenoid valve | high_side_out | MAXXECUPRO-C3-G4 | GPO 15 (12V) | high_side_out | single_source | |
| OEM-5-F7 | Rear VTEC solenoid valve | high_side_out | MAXXECUPRO-C3-H4 | GPO 16 (12V) | high_side_out | single_source | |
| OEM-A-1 | Injector 1 | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-A-10 | Front O2 sensor heater (HTCNTF) | low_side_out | MAXXECUPRO-C1-D1 | WBO2 Heater- | low_side_out | single_source | |
| OEM-A-11 | EGR control solenoid | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | single_source | |
| OEM-A-12 | Rear O2 sensor heater (HTCNTR) | low_side_out | MAXXECUPRO-C3-E1 | GPO 10/WBO2 2 HTR | low_side_out | single_source | |
| OEM-A-13 | Check engine light (WARN) | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-A-14 | Chamber volume control solenoid (BPS) | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-A-15 | A/C clutch relay (ACC) | low_side_out | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-A-18 | Radiator fan control (FANCNTR) | low_side_out | MAXXECUPRO-C1-D4 | GPO 3 | low_side_out | single_source | |
| OEM-A-2 | Injector 4 | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | single_source | |
| OEM-A-20 | EVAP purge cut-off solenoid (PGS) | low_side_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-A-21 | Ignition coil 1 | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | single_source | |
| OEM-A-22 | Ignition coil 2 | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | single_source | |
| OEM-A-23 | Power ground (PG1) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-A-24 | Power ground (PG2) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-A-25 | ECU power (IGP1) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-A-26 | Sensor ground (LG1) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-3 | Injector 2 | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-A-4 | Injector 5 | injector_out | MAXXECUPRO-C1-M3 | INJ 5 | injector_out | corroborated | |
| OEM-A-5 | Injector 3 | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-A-6 | Injector 6 | injector_out | MAXXECUPRO-C1-L3 | INJ 6 | injector_out | single_source | |
| OEM-A-7 | Main relay | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-A-8 | Fuel pump relay 2 (FLR2) | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-A-9 | Idle air control valve (IACV) | low_side_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | single_source | |
| OEM-B-10 | CYL 2M — CYP sensor 2 return | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B-11 | CYL 1P — CYP sensor 1 signal | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | single_source | |
| OEM-B-12 | CYL 1M — CYP sensor 1 return | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | 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 | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B-15 | CRNK 1P — crank sensor signal | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | single_source | |
| OEM-B-16 | CRNK 1M — crank sensor return | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-B-2 | Chassis ground (LG2) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-B-3 | Ignition coil 6 | ignition_out | MAXXECUPRO-C1-C3 | IGN 6 | ignition_out | single_source | |
| OEM-B-4 | Ignition coil 5 | ignition_out | MAXXECUPRO-C1-C2 | IGN 5 | ignition_out | single_source | |
| OEM-B-6 | Ignition coil 4 | ignition_out | MAXXECUPRO-C1-B3 | IGN 4 | ignition_out | single_source | |
| OEM-B-7 | Neutral switch (M/T) / gear position (A/T) | digital_in | MAXXECUPRO-C4-D3 | DIN 8 (switch) | digital_in | single_source | |
| OEM-B-8 | Ignition coil 3 | ignition_out | MAXXECUPRO-C1-B2 | IGN 3 | 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 | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-C-10 | Traction control | — | — | — | — | single_source | |
| OEM-C-11 | Starter switch (STS) | digital_in | MAXXECUPRO-C4-D4 | DIN 9 (switch) | digital_in | single_source | |
| OEM-C-12 | Traction control | — | — | — | — | single_source | |
| OEM-C-2 | Vehicle speed sensor (VSS) | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-C-3 | A/C switch (ACS) | digital_in | MAXXECUPRO-C4-E1 | DIN 10 (switch) | digital_in | single_source | |
| OEM-C-4 | Tachometer output (NEP) | tacho_out | MAXXECUPRO-C4-G2 | GPO 24 | low_side_out | single_source | |
| OEM-C-5 | A/C pressure switch (PDSW) | digital_in | MAXXECUPRO-C4-E2 | DIN 11 (switch) | digital_in | single_source | |
| OEM-C-6 | Traction control | — | — | — | — | single_source | |
| OEM-C-7 | Clutch switch (M/T) | digital_in | MAXXECUPRO-C3-A1 | DIN/VR 4 | digital_in | single_source | |
| OEM-C-8 | Traction control | — | — | — | — | single_source | |
| OEM-C-9 | Service check connector (SCS) | digital_in | MAXXECUPRO-C3-A2 | DIN/VR 5 | digital_in | single_source | |
| OEM-D-1 | Battery backup (VBU) | power_in | — | — | — | single_source | |
| OEM-D-11 | Throttle position sensor (TPS) | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-D-12 | EGR lift sensor (EGRL) | analog_in | MAXXECUPRO-C3-D1 | ANALOG IN 6 (0-5V) | analog_in | single_source | |
| OEM-D-13 | Engine coolant temperature (ECT) | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-D-14 | Primary O2 sensor | lambda_nb_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-D-15 | Intake air temperature (IAT) | temp_in | MAXXECUPRO-C1-J2 | AIN 2 (temperature) | temp_in | single_source | |
| OEM-D-16 | Secondary O2 sensor | lambda_nb_in | MAXXECUPRO-C3-C3 | ANALOG IN 5 (0-5V) | analog_in | single_source | |
| OEM-D-17 | MAP sensor | analog_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-D-18 | +5V sensor supply (VCC) | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-D-19 | +5V sensor supply (VCC) | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-D-20 | +5V sensor supply (VCC) | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-D-21 | Sensor ground (SG) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-D-22 | Sensor ground (SG) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-D-3 | Knock sensor — rear | knock_in | MAXXECUPRO-C4-F3 | Knock 2 | knock_in | single_source | |
| OEM-D-4 | Knock sensor — front | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | 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 | MAXXECUPRO-C3-D2 | ANALOG IN 7 (0-5V) | analog_in | single_source | |
| OEM-D-9 | Alternator FR signal | digital_in | MAXXECUPRO-C1-K4 | DIN/VR 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 | MAXXECUPRO-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W4 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | no route | 12V ECU 2 | — | |
| W5 | OEM-A-23 | SP-GND-1 | 0.85 | no route | Power ground (PG1) | — | |
| W6 | OEM-A-24 | SP-GND-1 | 0.85 | no route | Power ground (PG2) | — | |
| W7 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Chassis ground (LG2) | — | |
| W8 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | no route | Engine GND | — | |
| W9 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | no route | Engine ground 3 | — | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | no route | Engine ground 3 | — | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | no route | Engine ground 3 | — | |
| W12 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | no route | ENGINE GROUND 2 | — | |
| W13 | OEM-A-26 | SP-0V-1 | 0.5 | no route | Sensor ground (LG1) | — | |
| W14 | OEM-B-10 | SP-0V-1 | 0.5 | no route | CYL 2M — CYP sensor 2 return | — | |
| W15 | OEM-B-12 | SP-0V-1 | 0.5 | no route | CYL 1M — CYP sensor 1 return | — | |
| W16 | OEM-B-14 | SP-0V-1 | 0.5 | no route | CRNK 2M — TDC sensor return | — | |
| W17 | OEM-B-16 | SP-0V-1 | 0.5 | no route | CRNK 1M — crank sensor return | — | |
| W18 | OEM-D-21 | SP-0V-1 | 0.5 | no route | Sensor ground (SG) | — | |
| W19 | OEM-D-22 | SP-0V-1 | 0.5 | no route | Sensor ground (SG) | — | |
| W20 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W21 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W22 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W23 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W24 | OEM-D-18 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W25 | OEM-D-19 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W26 | OEM-D-20 | SP-5V1-1 | 0.5 | no route | +5V sensor supply (VCC) | — | |
| W27 | SP-5V1-1 | MAXXECUPRO-C1-G1 | 0.5 | no route | +5V sensor supply | — | |
| W28 | OEM-B-15 | MAXXECUPRO-C1-H3 | 0.5 | no route | CRNK 1P — crank sensor signal | — | |
| W29 | OEM-B-11 | MAXXECUPRO-C1-H4 | 0.5 | no route | CYL 1P — CYP sensor 1 signal | — | |
| W30 | OEM-D-4 | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock sensor — front | — | |
| W31 | OEM-D-3 | MAXXECUPRO-C4-F3 | 0.5 | no route | Knock sensor — rear | — | |
| W32 | OEM-A-21 | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition coil 1 | — | |
| W33 | OEM-A-22 | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition coil 2 | — | |
| W34 | OEM-B-8 | MAXXECUPRO-C1-B2 | 0.5 | no route | Ignition coil 3 | — | |
| W35 | OEM-B-6 | MAXXECUPRO-C1-B3 | 0.5 | no route | Ignition coil 4 | — | |
| W36 | OEM-B-4 | MAXXECUPRO-C1-C2 | 0.5 | no route | Ignition coil 5 | — | |
| W37 | OEM-B-3 | MAXXECUPRO-C1-C3 | 0.5 | no route | Ignition coil 6 | — | |
| W38 | OEM-A-1 | MAXXECUPRO-C1-K1 | 0.5 | no route | Injector 1 | — | |
| W39 | OEM-A-3 | MAXXECUPRO-C1-K2 | 0.5 | no route | Injector 2 | — | |
| W40 | OEM-A-5 | MAXXECUPRO-C1-M1 | 0.5 | no route | Injector 3 | — | |
| W41 | OEM-A-2 | MAXXECUPRO-C1-M2 | 0.5 | no route | Injector 4 | — | |
| W42 | OEM-A-4 | MAXXECUPRO-C1-M3 | 0.5 | no route | Injector 5 | — | |
| W43 | OEM-A-6 | MAXXECUPRO-C1-L3 | 0.5 | no route | Injector 6 | — | |
| W44 | OEM-A-8 | MAXXECUPRO-C1-B4 | 0.5 | no route | Fuel pump relay 2 (FLR2) | — | |
| W45 | OEM-A-15 | MAXXECUPRO-C1-C4 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W46 | OEM-A-18 | MAXXECUPRO-C1-D4 | 0.5 | no route | Radiator fan control (FANCNTR) | — | |
| W47 | OEM-A-7 | MAXXECUPRO-C1-E4 | 0.5 | no route | Main relay | — | |
| W48 | OEM-5-F5 | MAXXECUPRO-C3-G4 | 0.5 | no route | Front VTEC solenoid valve | — | |
| W49 | OEM-5-F7 | MAXXECUPRO-C3-H4 | 0.5 | no route | Rear VTEC solenoid valve | — | |
| W50 | OEM-A-10 | MAXXECUPRO-C1-D1 | 0.5 | no route | Front O2 sensor heater (HTCNTF) | — | |
| W51 | OEM-A-12 | MAXXECUPRO-C3-E1 | 0.5 | no route | Rear O2 sensor heater (HTCNTR) | — | |
| W52 | OEM-A-11 | MAXXECUPRO-C1-A1 | 0.5 | no route | EGR control solenoid | — | |
| W53 | OEM-A-13 | MAXXECUPRO-C1-B1 | 0.5 | no route | Check engine light (WARN) | — | |
| W54 | OEM-A-14 | MAXXECUPRO-C1-C1 | 0.5 | no route | Chamber volume control solenoid (BPS) | — | |
| W55 | OEM-A-20 | MAXXECUPRO-C1-A4 | 0.5 | no route | EVAP purge cut-off solenoid (PGS) | — | |
| W56 | OEM-A-9 | MAXXECUPRO-C4-G1 | 0.5 | no route | Idle air control valve (IACV) | — | |
| W57 | OEM-C-4 | MAXXECUPRO-C4-G2 | 0.5 | no route | Tachometer output (NEP) | — | |
| W58 | OEM-D-17 | MAXXECUPRO-C1-J3 | 0.5 | no route | MAP sensor | — | |
| W59 | OEM-D-11 | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W60 | OEM-D-14 | MAXXECUPRO-C1-J4 | 0.5 | no route | Primary O2 sensor | — | |
| W61 | OEM-D-16 | MAXXECUPRO-C3-C3 | 0.5 | no route | Secondary O2 sensor | — | |
| W62 | OEM-D-13 | MAXXECUPRO-C1-J1 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W63 | OEM-D-15 | MAXXECUPRO-C1-J2 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W64 | OEM-D-12 | MAXXECUPRO-C3-D1 | 0.5 | no route | EGR lift sensor (EGRL) | — | |
| W65 | OEM-C-2 | MAXXECUPRO-C1-K3 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W66 | OEM-D-9 | MAXXECUPRO-C1-K4 | 0.5 | no route | Alternator FR signal | — | |
| W67 | OEM-5-F2 | MAXXECUPRO-C3-A3 | 0.5 | no route | Front VTEC pressure switch | — | |
| W68 | OEM-5-F4 | MAXXECUPRO-C3-A4 | 0.5 | no route | Rear VTEC pressure switch | — | |
| W69 | OEM-B-7 | MAXXECUPRO-C4-D3 | 0.5 | no route | Neutral switch (M/T) / gear position (A/T) | — | |
| W70 | OEM-C-11 | MAXXECUPRO-C4-D4 | 0.5 | no route | Starter switch (STS) | — | |
| W71 | OEM-C-3 | MAXXECUPRO-C4-E1 | 0.5 | no route | A/C switch (ACS) | — | |
| W72 | OEM-C-5 | MAXXECUPRO-C4-E2 | 0.5 | no route | A/C pressure switch (PDSW) | — | |
| W73 | OEM-C-7 | MAXXECUPRO-C3-A1 | 0.5 | no route | Clutch switch (M/T) | — | |
| W74 | OEM-C-9 | MAXXECUPRO-C3-A2 | 0.5 | no route | Service check connector (SCS) | — | |
| W75 | OEM-D-8 | MAXXECUPRO-C3-D2 | 0.5 | no route | Ignition timing adjuster (IGADJ) | — |
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 (3)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-D-8 ↔ MAXXECUPRO-C3-D2 | OEM-D-8 "Ignition timing adjuster (IGADJ)" [digital_in] is wired to MAXXECUPRO-C3-D2 "ANALOG IN 7 (0-5V)" [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-C-4 ↔ MAXXECUPRO-C4-G2 | OEM-C-4 "Tachometer output (NEP)" [tacho_out] is wired to MAXXECUPRO-C4-G2 "GPO 24" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| info | UNMAPPED | OEM | 8 optional OEM pins are not mapped: 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-6 Traction control; OEM-C-8 Traction control; OEM-D-5 Traction control; OEM-D-6 Fuel pump voltage monitor (VFP) |
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 (MaxxECU trigger list has no C30A/C32B/NSX (Honda K20/K20A2/K20Z4/F20C only)) Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-D 1: Battery backup (VBU): MaxxECU MaxxECU PRO has no battery-constant input; not needed - OEM-B 13: CRNK 2P — TDC sensor signal: no free crank_vr/frequency_in input on MaxxECU MaxxECU PRO - OEM-B 9: CYL 2P — CYP sensor 2 signal: no free cam_vr/cam_hall/frequency_in input on MaxxECU MaxxECU PRO - 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 - MAXXECUPRO-C3 K3: KEY IN 12V: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source
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 | MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO) | http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html | archive | 2026-10-05 | 2e37b6814690 |
| 3 | vendor_doc | dodo-upgrades: Honda OBD1 V6 ECU pinout | https://dodo-upgrades.nl/index.php/obd1-v6-pinouts/ | archive | 2026-10-05 | f9539af28904 |