Mazda RX-7 FD 1992-2002 (13B-REW twin-turbo) → MaxxECU MaxxECU PRO REV10+ (auto)
Mazda RX-7 FD 1992-2002 (13B-REW twin-turbo) — MaxxECU — MaxxECU PRO
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12
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 | none |
| Size of the job | 64 wires · 10 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-D-4A | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-D-4E | 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-1AF | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-1AJ | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-1L | 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-1AB | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-A-1X | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-C-3AB | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-C-3S | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-3A | MAXXECUPRO-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C-3R | MAXXECUPRO-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-3U | MAXXECUPRO-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-3O | MAXXECUPRO-C4-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-D-4AF | MAXXECUPRO-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-D-4AJ | MAXXECUPRO-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-D-4AN | MAXXECUPRO-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-1Q | MAXXECUPRO-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-1U | MAXXECUPRO-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-1Y | MAXXECUPRO-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-1AC | MAXXECUPRO-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-D-4C | MAXXECUPRO-C3-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-1AA | MAXXECUPRO-C3-L3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-1AE | MAXXECUPRO-C3-L2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-1S | MAXXECUPRO-C3-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-1W | MAXXECUPRO-C3-M3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-1H | MAXXECUPRO-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-D-4D | MAXXECUPRO-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-D-4F | MAXXECUPRO-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-D-4G | MAXXECUPRO-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-D-4I | MAXXECUPRO-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-D-4K | MAXXECUPRO-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-D-4L | MAXXECUPRO-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-1C | MAXXECUPRO-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-1E | MAXXECUPRO-C4-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-1G | MAXXECUPRO-C4-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-1I | MAXXECUPRO-C4-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-1K | MAXXECUPRO-C4-G4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-1M | MAXXECUPRO-C4-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-1O | MAXXECUPRO-C4-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-C-3G | MAXXECUPRO-C4-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-D-4M | MAXXECUPRO-C4-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-D-4AH | MAXXECUPRO-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-C-3I | MAXXECUPRO-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-C-3D | MAXXECUPRO-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-C-3W | MAXXECUPRO-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-C-3T | MAXXECUPRO-C1-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-C-3V | MAXXECUPRO-C4-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-C-3H | MAXXECUPRO-C3-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-D-4Q | MAXXECUPRO-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-D-4AA | MAXXECUPRO-C3-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-D-4S | MAXXECUPRO-C3-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-D-4V | MAXXECUPRO-C1-K4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-D-4W | MAXXECUPRO-C4-D3 | 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-G1 | MAXXECUPRO-C1-M4 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 2 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 3 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-M4 | open (OL) | sensor ground must not touch +12 V supply | |
| 4 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-G1 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-M4 | open (OL) | power ground must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
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 | — | W41 | — | 0.5 | OEM-D-4I | — | — | — |
| A2 | IGN 1 | — | W25 | — | 0.5 | OEM-D-4AF | — | — | — |
| A3 | IGN 2 | — | W26 | — | 0.5 | OEM-D-4AJ | — | — | — |
| A4 | GPO 8/TACHO | — | W44 | — | 0.5 | OEM-A-1C | — | — | — |
| B1 | GPO 6 | — | W42 | — | 0.5 | OEM-D-4K | — | — | — |
| B2 | IGN 3 | — | W27 | — | 0.5 | OEM-D-4AN | — | — | — |
| B3 | IGN 4 | — | — | — | — | — | — | — | — |
| B4 | GPO 1 | — | W37 | — | 0.5 | OEM-A-1H | — | — | — |
| C1 | GPO 7 | — | W43 | — | 0.5 | OEM-D-4L | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W38 | — | 0.5 | OEM-D-4D | — | — | — |
| D1 | WBO2 Heater- | — | — | — | — | — | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W39 | — | 0.5 | OEM-D-4F | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W40 | — | 0.5 | OEM-D-4G | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W21 | — | 0.5 | OEM-C-3A | — | — | — |
| G2 | TPS/AIN | — | W54 | — | 0.5 | OEM-C-3I | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W22 | — | 0.5 | OEM-C-3R | — | — | — |
| H4 | HOME | — | W23 | — | 0.5 | OEM-C-3U | — | — | — |
| J1 | AIN 1 (temperature) | — | W56 | — | 0.5 | OEM-C-3W | — | — | — |
| J2 | AIN 2 (temperature) | — | W57 | — | 0.5 | OEM-C-3T | — | — | — |
| J3 | AIN 3 (0-5V) | — | W53 | — | 0.5 | OEM-D-4AH | — | — | — |
| J4 | AIN 4 (0-5V) | — | W55 | — | 0.5 | OEM-C-3D | — | — | — |
| K1 | INJ 1 | — | W28 | — | 0.5 | OEM-A-1Q | — | — | — |
| K2 | INJ 2 | — | W29 | — | 0.5 | OEM-A-1U | — | — | — |
| K3 | DIN/VR 1 | — | W60 | — | 0.5 | OEM-D-4Q | — | — | — |
| K4 | DIN/VR 2 | — | W63 | — | 0.5 | OEM-D-4V | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | — | — | — | — | — | — | — |
| L4 | Engine GND | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W30 | — | 0.5 | OEM-A-1Y | — | — | — |
| M2 | INJ 4 | — | W31 | — | 0.5 | OEM-A-1AC | — | — | — |
| M3 | INJ 5 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| A2 | DIN/VR 5 | — | — | — | — | — | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W61 | — | 0.5 | OEM-D-4AA | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W62 | — | 0.5 | OEM-D-4S | — | — | — |
| 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) | — | W59 | — | 0.5 | OEM-C-3H | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | — | — | — | — | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | — | — | — | — | — | — | — |
| D3 | ANALOG IN 8 (0-5V) | — | — | — | — | — | — | — | — |
| D4 | GPO 20 (12V) | — | — | — | — | — | — | — | — |
| E1 | GPO 10/WBO2 2 HTR | — | — | — | — | — | — | — | — |
| 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) | — | — | — | — | — | — | — | — |
| H1 | INJECTOR OUT 13 | — | — | — | — | — | — | — | — |
| H2 | IGNITION OUT 12 | — | — | — | — | — | — | — | — |
| H3 | IGNITION OUT 10 | — | — | — | — | — | — | — | — |
| H4 | GPO 16 (12V) | — | — | — | — | — | — | — | — |
| J1 | INJECTOR OUT 16 | — | — | — | — | — | — | — | — |
| J2 | SENSOR GND | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| J4 | GPO 17 (12V) | — | — | — | — | — | — | — | — |
| K1 | INJECTOR OUT 10 | — | — | — | — | — | — | — | — |
| K2 | INJECTOR OUT 9 | — | — | — | — | — | — | — | — |
| K3 | KEY IN 12V | — | W32 | — | 0.5 | OEM-D-4C | — | — | — |
| K4 | GPO 18 (12V) | — | — | — | — | — | — | — | — |
| L1 | INJECTOR OUT 11 | — | — | — | — | — | — | — | — |
| L2 | GPO 12/MOTOR 1 + | — | W34 | — | 0.5 | OEM-A-1AE | — | — | — |
| L3 | GPO 11/MOTOR 1 - | — | W33 | — | 0.5 | OEM-A-1AA | — | — | — |
| L4 | ENGINE GROUND 2 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJECTOR OUT 12 | — | — | — | — | — | — | — | — |
| M2 | GPO 13/MOTOR 2 + | — | W35 | — | 0.5 | OEM-A-1S | — | — | — |
| M3 | GPO 14/MOTOR 2 - | — | W36 | — | 0.5 | OEM-A-1W | — | — | — |
| 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) | — | W58 | — | 0.5 | OEM-C-3V | — | — | — |
| C4 | AIN 20 (temp) | — | — | — | — | — | — | — | — |
| D1 | AIN 21 (temp) | — | — | — | — | — | — | — | — |
| D2 | AIN 22 (temp) | — | — | — | — | — | — | — | — |
| D3 | DIN 8 (switch) | — | W64 | — | 0.5 | OEM-D-4W | — | — | — |
| D4 | DIN 9 (switch) | — | — | — | — | — | — | — | — |
| E1 | DIN 10 (switch) | — | — | — | — | — | — | — | — |
| E2 | DIN 11 (switch) | — | — | — | — | — | — | — | — |
| E3 | +5V sensor supply 3 | — | — | — | — | — | — | — | — |
| E4 | 5-10V sensor supply | — | — | — | — | — | — | — | — |
| F1 | GPO 23-30 flyback | — | — | — | — | — | — | — | — |
| F2 | Knock 1 | — | W24 | — | 0.5 | OEM-C-3O | — | — | — |
| F3 | Knock 2 | — | — | — | — | — | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W45 | — | 0.5 | OEM-A-1E | — | — | — |
| G2 | GPO 24 | — | W46 | — | 0.5 | OEM-A-1G | — | — | — |
| G3 | GPO 25 | — | W47 | — | 0.5 | OEM-A-1I | — | — | — |
| G4 | GPO 26 | — | W48 | — | 0.5 | OEM-A-1K | — | — | — |
| H1 | GPO 27 | — | W49 | — | 0.5 | OEM-A-1M | — | — | — |
| H2 | GPO 28 | — | W50 | — | 0.5 | OEM-A-1O | — | — | — |
| H3 | GPO 29 | — | W51 | — | 0.5 | OEM-C-3G | — | — | — |
| H4 | GPO 30 | — | W52 | — | 0.5 | OEM-D-4M | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1AA | OMP stepper phase B1 | — | W33 | — | 0.5 | MAXXECUPRO-C3-L3 | — | — | — |
| 1AB | Sensor ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 1AC | Injector 4 (rear secondary) | — | W31 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| 1AE | OMP stepper phase A1 | — | W34 | — | 0.5 | MAXXECUPRO-C3-L2 | — | — | — |
| 1AF | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 1AJ | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 1C | Idle speed control (ISC) solenoid | — | W44 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| 1E | Turbo charge control solenoid | — | W45 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
| 1G | Purge solenoid | — | W46 | — | 0.5 | MAXXECUPRO-C4-G2 | — | — | — |
| 1H | Cooling fan relay (low speed) | — | W37 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| 1I | Turbo charge relief solenoid | — | W47 | — | 0.5 | MAXXECUPRO-C4-G3 | — | — | — |
| 1K | Turbo pre-control solenoid | — | W48 | — | 0.5 | MAXXECUPRO-C4-G4 | — | — | — |
| 1L | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 1M | Turbo control solenoid | — | W49 | — | 0.5 | MAXXECUPRO-C4-H1 | — | — | — |
| 1O | Boost control solenoid | — | W50 | — | 0.5 | MAXXECUPRO-C4-H2 | — | — | — |
| 1Q | Injector 1 (front primary) | — | W28 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| 1S | OMP stepper phase B2 | — | W35 | — | 0.5 | MAXXECUPRO-C3-M2 | — | — | — |
| 1U | Injector 2 (rear primary) | — | W29 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| 1W | OMP stepper phase A2 | — | W36 | — | 0.5 | MAXXECUPRO-C3-M3 | — | — | — |
| 1X | Sensor ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 1Y | Injector 3 (front secondary) | — | W30 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
OEM-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 3A | +5V sensor supply | — | W21 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
| 3AB | Sensor ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 3D | O2 sensor (narrowband) | — | W55 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| 3G | Fuel pressure regulator control (PRC) solenoid | — | W51 | — | 0.5 | MAXXECUPRO-C4-H3 | — | — | — |
| 3H | OMP position sensor | — | W59 | — | 0.5 | MAXXECUPRO-C3-C3 | — | — | — |
| 3I | Throttle position (TPS, full range) | — | W54 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| 3O | Knock sensor | — | W24 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| 3R | Crank position (CAS NE) | — | W22 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
| 3S | Sensor ground (CAS) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 3T | Intake air temperature (IAT) | — | W57 | — | 0.5 | MAXXECUPRO-C1-J2 | — | — | — |
| 3U | Home position (CAS G) | — | W23 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| 3V | Fuel temperature | — | W58 | — | 0.5 | MAXXECUPRO-C4-C3 | — | — | — |
| 3W | Coolant temperature (ECT) | — | W56 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
OEM-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 4A | ECU main power (+12V via main relay/ECR) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 4AA | Brake pedal switch | — | W61 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| 4AF | Ignition front trailing | — | W25 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| 4AH | MAP sensor (PIM) | — | W53 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
| 4AJ | Ignition rear trailing | — | W26 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| 4AN | Ignition leading (wasted spark) | — | W27 | — | 0.5 | MAXXECUPRO-C1-B2 | — | — | — |
| 4B | Battery constant (+12V) | — | — | — | — | — | — | — | — |
| 4C | Ignition switch / start signal | — | W32 | — | 0.5 | MAXXECUPRO-C3-K3 | — | — | — |
| 4D | Air pump clutch relay | — | W38 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| 4E | ECU main power (+12V via main relay/ECR) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4F | Fuel pump speed relay | — | W39 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
| 4G | Fuel pump relay | — | W40 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| 4I | A/C relay | — | W41 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
| 4K | Cooling fan relay (low speed) | — | W42 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| 4L | Cooling fan relay (high speed) | — | W43 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| 4M | Tachometer output | — | W52 | — | 0.5 | MAXXECUPRO-C4-H4 | — | — | — |
| 4Q | Vehicle speed sensor | — | W60 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| 4S | Clutch switch | — | W62 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| 4V | A/C request | — | W63 | — | 0.5 | MAXXECUPRO-C1-K4 | — | — | — |
| 4W | Power steering pressure switch | — | W64 | — | 0.5 | MAXXECUPRO-C4-D3 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-A-1AB | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-A-1X | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-C-3AB | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-C-3S | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-D-4A | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-D-4E | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MAXXECUPRO-C1-M4 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MAXXECUPRO-C3-M4 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-A-1AF | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-1AJ | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-1L | — | — | — |
| 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-A-1AA | OMP stepper phase B1 | hbridge_out | MAXXECUPRO-C3-L3 | GPO 11/MOTOR 1 - | hbridge_out | single_source | |
| OEM-A-1AB | Sensor ground | 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-1AC | Injector 4 (rear secondary) | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | single_source | |
| OEM-A-1AE | OMP stepper phase A1 | hbridge_out | MAXXECUPRO-C3-L2 | GPO 12/MOTOR 1 + | hbridge_out | single_source | |
| OEM-A-1AF | Power ground | 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-1AJ | Power ground | 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-1C | Idle speed control (ISC) solenoid | low_side_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-A-1E | Turbo charge control solenoid | low_side_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | single_source | |
| OEM-A-1G | Purge solenoid | low_side_out | MAXXECUPRO-C4-G2 | GPO 24 | low_side_out | single_source | |
| OEM-A-1H | Cooling fan relay (low speed) | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-A-1I | Turbo charge relief solenoid | low_side_out | MAXXECUPRO-C4-G3 | GPO 25 | low_side_out | single_source | |
| OEM-A-1K | Turbo pre-control solenoid | low_side_out | MAXXECUPRO-C4-G4 | GPO 26 | low_side_out | single_source | |
| OEM-A-1L | Power ground | 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-1M | Turbo control solenoid | low_side_out | MAXXECUPRO-C4-H1 | GPO 27 | low_side_out | single_source | |
| OEM-A-1O | Boost control solenoid | low_side_out | MAXXECUPRO-C4-H2 | GPO 28 | low_side_out | single_source | |
| OEM-A-1Q | Injector 1 (front primary) | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-A-1S | OMP stepper phase B2 | hbridge_out | MAXXECUPRO-C3-M2 | GPO 13/MOTOR 2 + | hbridge_out | single_source | |
| OEM-A-1U | Injector 2 (rear primary) | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-A-1W | OMP stepper phase A2 | hbridge_out | MAXXECUPRO-C3-M3 | GPO 14/MOTOR 2 - | hbridge_out | single_source | |
| OEM-A-1X | Sensor ground | 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-1Y | Injector 3 (front secondary) | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-C-3A | +5V sensor supply | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-C-3AB | Sensor ground | 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-C-3D | O2 sensor (narrowband) | lambda_nb_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-C-3G | Fuel pressure regulator control (PRC) solenoid | low_side_out | MAXXECUPRO-C4-H3 | GPO 29 | low_side_out | single_source | |
| OEM-C-3H | OMP position sensor | analog_in | MAXXECUPRO-C3-C3 | ANALOG IN 5 (0-5V) | analog_in | single_source | |
| OEM-C-3I | Throttle position (TPS, full range) | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-C-3O | Knock sensor | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | knock_in | single_source | |
| OEM-C-3R | Crank position (CAS NE) | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | single_source | |
| OEM-C-3S | Sensor ground (CAS) | 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-C-3T | Intake air temperature (IAT) | temp_in | MAXXECUPRO-C1-J2 | AIN 2 (temperature) | temp_in | single_source | |
| OEM-C-3U | Home position (CAS G) | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | single_source | |
| OEM-C-3V | Fuel temperature | temp_in | MAXXECUPRO-C4-C3 | AIN 19 (temp) | temp_in | single_source | |
| OEM-C-3W | Coolant temperature (ECT) | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-D-4A | ECU main power (+12V via main relay/ECR) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-D-4AA | Brake pedal switch | digital_in | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | single_source | |
| OEM-D-4AF | Ignition front trailing | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | single_source | |
| OEM-D-4AH | MAP sensor (PIM) | analog_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-D-4AJ | Ignition rear trailing | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | single_source | |
| OEM-D-4AN | Ignition leading (wasted spark) | ignition_out | MAXXECUPRO-C1-B2 | IGN 3 | ignition_out | single_source | |
| OEM-D-4B | Battery constant (+12V) | power_in | — | — | — | single_source | |
| OEM-D-4C | Ignition switch / start signal | digital_in | MAXXECUPRO-C3-K3 | KEY IN 12V | digital_in | single_source | |
| OEM-D-4D | Air pump clutch relay | low_side_out | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-D-4E | ECU main power (+12V via main relay/ECR) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-D-4F | Fuel pump speed relay | low_side_out | MAXXECUPRO-C1-D4 | GPO 3 | low_side_out | single_source | |
| OEM-D-4G | Fuel pump relay | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-D-4I | A/C relay | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | single_source | |
| OEM-D-4K | Cooling fan relay (low speed) | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-D-4L | Cooling fan relay (high speed) | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-D-4M | Tachometer output | tacho_out | MAXXECUPRO-C4-H4 | GPO 30 | low_side_out | single_source | |
| OEM-D-4Q | Vehicle speed sensor | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-D-4S | Clutch switch | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | single_source | |
| OEM-D-4V | A/C request | digital_in | MAXXECUPRO-C1-K4 | DIN/VR 2 | digital_in | single_source | |
| OEM-D-4W | Power steering pressure switch | digital_in | MAXXECUPRO-C4-D3 | DIN 8 (switch) | digital_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-D-4A | SP-14V-1 | 0.85 | no route | ECU main power (+12V via main relay/ECR) | — | |
| W2 | OEM-D-4E | SP-14V-1 | 0.85 | no route | ECU main power (+12V via main relay/ECR) | — | |
| 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-1AF | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-A-1AJ | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-A-1L | SP-GND-1 | 0.85 | no route | Power ground | — | |
| 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-1AB | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W14 | OEM-A-1X | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W15 | OEM-C-3AB | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W16 | OEM-C-3S | SP-0V-1 | 0.5 | no route | Sensor ground (CAS) | — | |
| W17 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W18 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W19 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W20 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W21 | OEM-C-3A | MAXXECUPRO-C1-G1 | 0.5 | no route | +5V sensor supply | — | |
| W22 | OEM-C-3R | MAXXECUPRO-C1-H3 | 0.5 | no route | Crank position (CAS NE) | — | |
| W23 | OEM-C-3U | MAXXECUPRO-C1-H4 | 0.5 | no route | Home position (CAS G) | — | |
| W24 | OEM-C-3O | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock sensor | — | |
| W25 | OEM-D-4AF | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition front trailing | — | |
| W26 | OEM-D-4AJ | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition rear trailing | — | |
| W27 | OEM-D-4AN | MAXXECUPRO-C1-B2 | 0.5 | no route | Ignition leading (wasted spark) | — | |
| W28 | OEM-A-1Q | MAXXECUPRO-C1-K1 | 0.5 | no route | Injector 1 (front primary) | — | |
| W29 | OEM-A-1U | MAXXECUPRO-C1-K2 | 0.5 | no route | Injector 2 (rear primary) | — | |
| W30 | OEM-A-1Y | MAXXECUPRO-C1-M1 | 0.5 | no route | Injector 3 (front secondary) | — | |
| W31 | OEM-A-1AC | MAXXECUPRO-C1-M2 | 0.5 | no route | Injector 4 (rear secondary) | — | |
| W32 | OEM-D-4C | MAXXECUPRO-C3-K3 | 0.5 | no route | Ignition switch / start signal | — | |
| W33 | OEM-A-1AA | MAXXECUPRO-C3-L3 | 0.5 | no route | OMP stepper phase B1 | — | |
| W34 | OEM-A-1AE | MAXXECUPRO-C3-L2 | 0.5 | no route | OMP stepper phase A1 | — | |
| W35 | OEM-A-1S | MAXXECUPRO-C3-M2 | 0.5 | no route | OMP stepper phase B2 | — | |
| W36 | OEM-A-1W | MAXXECUPRO-C3-M3 | 0.5 | no route | OMP stepper phase A2 | — | |
| W37 | OEM-A-1H | MAXXECUPRO-C1-B4 | 0.5 | no route | Cooling fan relay (low speed) | — | |
| W38 | OEM-D-4D | MAXXECUPRO-C1-C4 | 0.5 | no route | Air pump clutch relay | — | |
| W39 | OEM-D-4F | MAXXECUPRO-C1-D4 | 0.5 | no route | Fuel pump speed relay | — | |
| W40 | OEM-D-4G | MAXXECUPRO-C1-E4 | 0.5 | no route | Fuel pump relay | — | |
| W41 | OEM-D-4I | MAXXECUPRO-C1-A1 | 0.5 | no route | A/C relay | — | |
| W42 | OEM-D-4K | MAXXECUPRO-C1-B1 | 0.5 | no route | Cooling fan relay (low speed) | — | |
| W43 | OEM-D-4L | MAXXECUPRO-C1-C1 | 0.5 | no route | Cooling fan relay (high speed) | — | |
| W44 | OEM-A-1C | MAXXECUPRO-C1-A4 | 0.5 | no route | Idle speed control (ISC) solenoid | — | |
| W45 | OEM-A-1E | MAXXECUPRO-C4-G1 | 0.5 | no route | Turbo charge control solenoid | — | |
| W46 | OEM-A-1G | MAXXECUPRO-C4-G2 | 0.5 | no route | Purge solenoid | — | |
| W47 | OEM-A-1I | MAXXECUPRO-C4-G3 | 0.5 | no route | Turbo charge relief solenoid | — | |
| W48 | OEM-A-1K | MAXXECUPRO-C4-G4 | 0.5 | no route | Turbo pre-control solenoid | — | |
| W49 | OEM-A-1M | MAXXECUPRO-C4-H1 | 0.5 | no route | Turbo control solenoid | — | |
| W50 | OEM-A-1O | MAXXECUPRO-C4-H2 | 0.5 | no route | Boost control solenoid | — | |
| W51 | OEM-C-3G | MAXXECUPRO-C4-H3 | 0.5 | no route | Fuel pressure regulator control (PRC) solenoid | — | |
| W52 | OEM-D-4M | MAXXECUPRO-C4-H4 | 0.5 | no route | Tachometer output | — | |
| W53 | OEM-D-4AH | MAXXECUPRO-C1-J3 | 0.5 | no route | MAP sensor (PIM) | — | |
| W54 | OEM-C-3I | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position (TPS, full range) | — | |
| W55 | OEM-C-3D | MAXXECUPRO-C1-J4 | 0.5 | no route | O2 sensor (narrowband) | — | |
| W56 | OEM-C-3W | MAXXECUPRO-C1-J1 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W57 | OEM-C-3T | MAXXECUPRO-C1-J2 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W58 | OEM-C-3V | MAXXECUPRO-C4-C3 | 0.5 | no route | Fuel temperature | — | |
| W59 | OEM-C-3H | MAXXECUPRO-C3-C3 | 0.5 | no route | OMP position sensor | — | |
| W60 | OEM-D-4Q | MAXXECUPRO-C1-K3 | 0.5 | no route | Vehicle speed sensor | — | |
| W61 | OEM-D-4AA | MAXXECUPRO-C3-A3 | 0.5 | no route | Brake pedal switch | — | |
| W62 | OEM-D-4S | MAXXECUPRO-C3-A4 | 0.5 | no route | Clutch switch | — | |
| W63 | OEM-D-4V | MAXXECUPRO-C1-K4 | 0.5 | no route | A/C request | — | |
| W64 | OEM-D-4W | MAXXECUPRO-C4-D3 | 0.5 | no route | Power steering pressure switch | — |
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 |
|---|---|---|---|
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-A1 | MAXXECUPRO-C1-A1 "GPO 5" drives OEM-D-4I A/C relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B1 | MAXXECUPRO-C1-B1 "GPO 6" drives OEM-D-4K Cooling fan relay (low speed) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B4 | MAXXECUPRO-C1-B4 "GPO 1" drives OEM-A-1H Cooling fan relay (low speed) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-C1 | MAXXECUPRO-C1-C1 "GPO 7" drives OEM-D-4L Cooling fan relay (high speed) (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-C4 | MAXXECUPRO-C1-C4 "GPO 2" drives OEM-D-4D Air pump clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-D4 | MAXXECUPRO-C1-D4 "GPO 3" drives OEM-D-4F Fuel pump speed relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-E4 | MAXXECUPRO-C1-E4 "GPO 4" drives OEM-D-4G Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-D-4M ↔ MAXXECUPRO-C4-H4 | OEM-D-4M "Tachometer output" [tacho_out] is wired to MAXXECUPRO-C4-H4 "GPO 30" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-D-4B | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Fit check: needs add-on. Resolve these before building: - Oil metering pump stepper driver needed; not documented for this ECU - Sequential twin-turbo control needed; not documented for this ECU - Trigger pattern needs a workaround: "Suzuki 13B sequential" in the trigger list — likely a mislabelled Mazda 13B rotary pattern. 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 4B: Battery constant (+12V): MaxxECU MaxxECU PRO has no battery-constant input; not needed
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Haltech: RX7 FD Series 7-8 Nexus PnP adapter pinout (HT-186338) | https://www.haltech.com/wp-admin/admin-ajax.php?action=ht_get_file&id=681af8c0cc78f3b6860e615e&op=1 | — | — | — |
| 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 |
| 2 | forum | defreezemotorsport: MS3 FD3S 16-bit ECU pinout | https://defreezemotorsport.ru/doku.php?id=ms3:fd3s162 | — | — | — |