Mazda RX-7 FC 1986-92 (13B-T Turbo II) → MaxxECU MaxxECU PRO REV10+ (auto)
Mazda RX-7 FC 1986-92 (13B-T Turbo II) — MaxxECU — MaxxECU PRO
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-08
Before you start
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 55 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-3-I | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | MAXXECUPRO-C1-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-2-R | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-3-G | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-1-P | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-1-Q | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-2-C | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-2-A | MAXXECUPRO-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-1-T | MAXXECUPRO-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-1-N | MAXXECUPRO-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-1-R | MAXXECUPRO-C4-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-1-U | MAXXECUPRO-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-1-V | MAXXECUPRO-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-1-X | MAXXECUPRO-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-E | MAXXECUPRO-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-3-H | MAXXECUPRO-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-3-C | MAXXECUPRO-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-3-F | MAXXECUPRO-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-1-F | MAXXECUPRO-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-3-D | MAXXECUPRO-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-1-C | MAXXECUPRO-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-1-S | MAXXECUPRO-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-K | MAXXECUPRO-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-M | MAXXECUPRO-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-N | MAXXECUPRO-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-O | MAXXECUPRO-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-P | MAXXECUPRO-C4-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-Q | MAXXECUPRO-C4-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-1-M | MAXXECUPRO-C4-G3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-2-E | MAXXECUPRO-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-2-B | MAXXECUPRO-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-2-G | MAXXECUPRO-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-2-D | MAXXECUPRO-C3-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-2-I | MAXXECUPRO-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-2-J | MAXXECUPRO-C1-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-2-L | MAXXECUPRO-C4-C3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-2-F | MAXXECUPRO-C3-D1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-2-H | MAXXECUPRO-C3-D2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-1-O | MAXXECUPRO-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-1-E | MAXXECUPRO-C1-K4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-1-G | MAXXECUPRO-C3-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-1-H | MAXXECUPRO-C3-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-1-L | MAXXECUPRO-C4-D3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-3-B | MAXXECUPRO-C3-A1 | 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-L4 | open (OL) | 5 V sensor reference must not touch power ground | |
| 2 | MAXXECUPRO-C1-G1 | MAXXECUPRO-C1-M4 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 3 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 4 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-M4 | open (OL) | sensor ground must not touch +12 V supply | |
| 5 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-M4 | open (OL) | power ground must not touch +12 V supply |
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 | — | W34 | — | 0.5 | OEM-2-K | — | — | — |
| A2 | IGN 1 | — | W23 | — | 0.5 | OEM-1-U | — | — | — |
| A3 | IGN 2 | — | W24 | — | 0.5 | OEM-1-V | — | — | — |
| A4 | GPO 8/TACHO | — | W37 | — | 0.5 | OEM-2-O | — | — | — |
| B1 | GPO 6 | — | W35 | — | 0.5 | OEM-2-M | — | — | — |
| B2 | IGN 3 | — | W25 | — | 0.5 | OEM-1-X | — | — | — |
| B3 | IGN 4 | — | — | — | — | — | — | — | — |
| B4 | GPO 1 | — | W30 | — | 0.5 | OEM-1-F | — | — | — |
| C1 | GPO 7 | — | W36 | — | 0.5 | OEM-2-N | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W31 | — | 0.5 | OEM-3-D | — | — | — |
| D1 | WBO2 Heater- | — | — | — | — | — | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W32 | — | 0.5 | OEM-1-C | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W33 | — | 0.5 | OEM-1-S | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W19 | — | 0.5 | OEM-2-A | — | — | — |
| G2 | TPS/AIN | — | W43 | — | 0.5 | OEM-2-G | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W20 | — | 0.5 | OEM-1-T | — | — | — |
| H4 | HOME | — | W21 | — | 0.5 | OEM-1-N | — | — | — |
| J1 | AIN 1 (temperature) | — | W45 | — | 0.5 | OEM-2-I | — | — | — |
| J2 | AIN 2 (temperature) | — | W46 | — | 0.5 | OEM-2-J | — | — | — |
| J3 | AIN 3 (0-5V) | — | W41 | — | 0.5 | OEM-2-E | — | — | — |
| J4 | AIN 4 (0-5V) | — | W42 | — | 0.5 | OEM-2-B | — | — | — |
| K1 | INJ 1 | — | W26 | — | 0.5 | OEM-3-E | — | — | — |
| K2 | INJ 2 | — | W27 | — | 0.5 | OEM-3-H | — | — | — |
| K3 | DIN/VR 1 | — | W50 | — | 0.5 | OEM-1-O | — | — | — |
| K4 | DIN/VR 2 | — | W51 | — | 0.5 | OEM-1-E | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | — | — | — | — | — | — | — |
| L4 | Engine GND | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W28 | — | 0.5 | OEM-3-C | — | — | — |
| M2 | INJ 4 | — | W29 | — | 0.5 | OEM-3-F | — | — | — |
| M3 | INJ 5 | — | — | — | — | — | — | — | — |
| M4 | +12V ECU power supply | — | W2 | — | 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 | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| H2 | Engine ground 3 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| H3 | Engine ground 3 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUPRO-C3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | DIN/VR 4 | — | W55 | — | 0.5 | OEM-3-B | — | — | — |
| A2 | DIN/VR 5 | — | — | — | — | — | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W52 | — | 0.5 | OEM-1-G | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W53 | — | 0.5 | OEM-1-H | — | — | — |
| 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) | — | W44 | — | 0.5 | OEM-2-D | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | W48 | — | 0.5 | OEM-2-F | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | W49 | — | 0.5 | OEM-2-H | — | — | — |
| 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 | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W18 | — | 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 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJECTOR OUT 12 | — | — | — | — | — | — | — | — |
| M2 | GPO 13/MOTOR 2 + | — | — | — | — | — | — | — | — |
| M3 | GPO 14/MOTOR 2 - | — | — | — | — | — | — | — | — |
| M4 | 12V ECU 2 | — | W3 | — | 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) | — | W47 | — | 0.5 | OEM-2-L | — | — | — |
| C4 | AIN 20 (temp) | — | — | — | — | — | — | — | — |
| D1 | AIN 21 (temp) | — | — | — | — | — | — | — | — |
| D2 | AIN 22 (temp) | — | — | — | — | — | — | — | — |
| D3 | DIN 8 (switch) | — | W54 | — | 0.5 | OEM-1-L | — | — | — |
| 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 | — | W22 | — | 0.5 | OEM-1-R | — | — | — |
| F3 | Knock 2 | — | — | — | — | — | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W38 | — | 0.5 | OEM-2-P | — | — | — |
| G2 | GPO 24 | — | W39 | — | 0.5 | OEM-2-Q | — | — | — |
| G3 | GPO 25 | — | W40 | — | 0.5 | OEM-1-M | — | — | — |
| G4 | GPO 26 | — | — | — | — | — | — | — | — |
| H1 | GPO 27 | — | — | — | — | — | — | — | — |
| H2 | GPO 28 | — | — | — | — | — | — | — | — |
| H3 | GPO 29 | — | — | — | — | — | — | — | — |
| H4 | GPO 30 | — | — | — | — | — | — | — | — |
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| C | Air bypass solenoid | — | W32 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
| E | A/C request | — | W51 | — | 0.5 | MAXXECUPRO-C1-K4 | — | — | — |
| F | A/C clutch relay | — | W30 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| G | Neutral switch | — | W52 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| H | Water temperature switch | — | W53 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| L | Clutch switch | — | W54 | — | 0.5 | MAXXECUPRO-C4-D3 | — | — | — |
| M | Ignition feedback (tacho) | — | W40 | — | 0.5 | MAXXECUPRO-C4-G3 | — | — | — |
| N | CAS 2-tooth (G, cam) | — | W21 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| O | Vehicle speed (mileage sensor) | — | W50 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| P | CAS ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| Q | CAS ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| R | Knock input | — | W22 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| S | Port air valve | — | W33 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| T | CAS 24-tooth (NE, crank) | — | W20 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
| U | Ignition select (trailing rotor) | — | W23 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| V | Ignition leading | — | W24 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| X | Ignition trailing | — | W25 | — | 0.5 | MAXXECUPRO-C1-B2 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | 5V sensor supply | — | W19 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
| B | MAP (pressure) signal | — | W42 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| C | Sensor ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| D | O2 sensor signal | — | W44 | — | 0.5 | MAXXECUPRO-C3-C3 | — | — | — |
| E | Airflow signal (AFM) | — | W41 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
| F | Variable resistor (tuning) | — | W48 | — | 0.5 | MAXXECUPRO-C3-D1 | — | — | — |
| G | Throttle position (TPS) | — | W43 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| H | Atmospheric pressure (ATP) | — | W49 | — | 0.5 | MAXXECUPRO-C3-D2 | — | — | — |
| I | Coolant temperature (ECT) | — | W45 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
| J | Inlet air temperature (IAT) | — | W46 | — | 0.5 | MAXXECUPRO-C1-J2 | — | — | — |
| K | Turbo control valve (boost) | — | W34 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
| L | Manifold air temperature (MAT) | — | W47 | — | 0.5 | MAXXECUPRO-C4-C3 | — | — | — |
| M | Pressure regulator control valve | — | W35 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| N | EGR valve | — | W36 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| O | Switching valve | — | W37 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| P | Relief valve | — | W38 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
| Q | Idle control (BAC) | — | W39 | — | 0.5 | MAXXECUPRO-C4-G2 | — | — | — |
| R | Power ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Starter input | — | W55 | — | 0.5 | MAXXECUPRO-C3-A1 | — | — | — |
| C | Primary injector 2 | — | W28 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
| D | Starter inhibit / fuel pump control | — | W31 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| E | Primary injector 1 | — | W26 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| F | Secondary injector 2 | — | W29 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| G | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| H | Secondary injector 1 | — | W27 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| I | Ignition power (+12V via main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| J | Battery constant (+12V) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | OEM-1-P | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-1-Q | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-2-C | — | — | — |
| 1 | — | — | W15 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-3-I | — | — | — |
| 1 | — | — | W2 | — | 0.85 | MAXXECUPRO-C1-M4 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MAXXECUPRO-C3-M4 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-2-R | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-G | — | — | — |
| 1 | — | — | W7 | — | 0.85 | MAXXECUPRO-C1-L4 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MAXXECUPRO-C2-H1 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUPRO-C2-H2 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUPRO-C2-H3 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MAXXECUPRO-C3-L4 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-C | Air bypass solenoid | low_side_out | MAXXECUPRO-C1-D4 | GPO 3 | low_side_out | single_source | |
| OEM-1-E | A/C request | digital_in | MAXXECUPRO-C1-K4 | DIN/VR 2 | digital_in | single_source | |
| OEM-1-F | A/C clutch relay | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-1-G | Neutral switch | digital_in | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | corroborated | |
| OEM-1-H | Water temperature switch | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | corroborated | |
| OEM-1-L | Clutch switch | digital_in | MAXXECUPRO-C4-D3 | DIN 8 (switch) | digital_in | single_source | |
| OEM-1-M | Ignition feedback (tacho) | tacho_out | MAXXECUPRO-C4-G3 | GPO 25 | low_side_out | single_source | |
| OEM-1-N | CAS 2-tooth (G, cam) | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | corroborated | |
| OEM-1-O | Vehicle speed (mileage sensor) | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-1-P | CAS 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 | corroborated | |
| OEM-1-Q | CAS 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 | corroborated | |
| OEM-1-R | Knock input | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | knock_in | corroborated | |
| OEM-1-S | Port air valve | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-1-T | CAS 24-tooth (NE, crank) | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | corroborated | |
| OEM-1-U | Ignition select (trailing rotor) | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | corroborated | |
| OEM-1-V | Ignition leading | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | corroborated | |
| OEM-1-X | Ignition trailing | ignition_out | MAXXECUPRO-C1-B2 | IGN 3 | ignition_out | single_source | |
| OEM-2-A | 5V sensor supply | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-2-B | MAP (pressure) signal | analog_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-2-C | 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-2-D | O2 sensor signal | lambda_nb_in | MAXXECUPRO-C3-C3 | ANALOG IN 5 (0-5V) | analog_in | single_source | |
| OEM-2-E | Airflow signal (AFM) | analog_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-2-F | Variable resistor (tuning) | analog_in | MAXXECUPRO-C3-D1 | ANALOG IN 6 (0-5V) | analog_in | single_source | |
| OEM-2-G | Throttle position (TPS) | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-2-H | Atmospheric pressure (ATP) | analog_in | MAXXECUPRO-C3-D2 | ANALOG IN 7 (0-5V) | analog_in | single_source | |
| OEM-2-I | Coolant temperature (ECT) | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-2-J | Inlet air temperature (IAT) | temp_in | MAXXECUPRO-C1-J2 | AIN 2 (temperature) | temp_in | single_source | |
| OEM-2-K | Turbo control valve (boost) | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | single_source | |
| OEM-2-L | Manifold air temperature (MAT) | temp_in | MAXXECUPRO-C4-C3 | AIN 19 (temp) | temp_in | single_source | |
| OEM-2-M | Pressure regulator control valve | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-2-O | Switching valve | low_side_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-2-P | Relief valve | low_side_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | single_source | |
| OEM-2-Q | Idle control (BAC) | low_side_out | MAXXECUPRO-C4-G2 | GPO 24 | low_side_out | single_source | |
| OEM-2-R | 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-3-A | 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-3-B | Starter input | digital_in | MAXXECUPRO-C3-A1 | DIN/VR 4 | digital_in | single_source | |
| OEM-3-C | Primary injector 2 | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-3-D | Starter inhibit / fuel pump control | low_side_out | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-3-E | Primary injector 1 | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-3-F | Secondary injector 2 | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | single_source | |
| OEM-3-G | 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-3-H | Secondary injector 1 | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-3-I | Ignition power (+12V via main relay) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-3-J | Battery constant (+12V) | power_in | — | — | — | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-3-I | SP-14V-1 | 0.85 | no route | Ignition power (+12V via main relay) | — | |
| W2 | SP-14V-1 | MAXXECUPRO-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W3 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | no route | 12V ECU 2 | — | |
| W4 | OEM-2-R | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W5 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-G | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | SP-GND-1 | MAXXECUPRO-C1-L4 | 0.85 | no route | Engine GND | — | |
| W8 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | no route | Engine ground 3 | — | |
| W9 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | no route | Engine ground 3 | — | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | no route | Engine ground 3 | — | |
| W11 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | no route | ENGINE GROUND 2 | — | |
| W12 | OEM-1-P | SP-0V-1 | 0.5 | no route | CAS ground | — | |
| W13 | OEM-1-Q | SP-0V-1 | 0.5 | no route | CAS ground | — | |
| W14 | OEM-2-C | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W15 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W16 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W17 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W18 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W19 | OEM-2-A | MAXXECUPRO-C1-G1 | 0.5 | no route | 5V sensor supply | — | |
| W20 | OEM-1-T | MAXXECUPRO-C1-H3 | 0.5 | no route | CAS 24-tooth (NE, crank) | — | |
| W21 | OEM-1-N | MAXXECUPRO-C1-H4 | 0.5 | no route | CAS 2-tooth (G, cam) | — | |
| W22 | OEM-1-R | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock input | — | |
| W23 | OEM-1-U | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition select (trailing rotor) | — | |
| W24 | OEM-1-V | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition leading | — | |
| W25 | OEM-1-X | MAXXECUPRO-C1-B2 | 0.5 | no route | Ignition trailing | — | |
| W26 | OEM-3-E | MAXXECUPRO-C1-K1 | 0.5 | no route | Primary injector 1 | — | |
| W27 | OEM-3-H | MAXXECUPRO-C1-K2 | 0.5 | no route | Secondary injector 1 | — | |
| W28 | OEM-3-C | MAXXECUPRO-C1-M1 | 0.5 | no route | Primary injector 2 | — | |
| W29 | OEM-3-F | MAXXECUPRO-C1-M2 | 0.5 | no route | Secondary injector 2 | — | |
| W30 | OEM-1-F | MAXXECUPRO-C1-B4 | 0.5 | no route | A/C clutch relay | — | |
| W31 | OEM-3-D | MAXXECUPRO-C1-C4 | 0.5 | no route | Starter inhibit / fuel pump control | — | |
| W32 | OEM-1-C | MAXXECUPRO-C1-D4 | 0.5 | no route | Air bypass solenoid | — | |
| W33 | OEM-1-S | MAXXECUPRO-C1-E4 | 0.5 | no route | Port air valve | — | |
| W34 | OEM-2-K | MAXXECUPRO-C1-A1 | 0.5 | no route | Turbo control valve (boost) | — | |
| W35 | OEM-2-M | MAXXECUPRO-C1-B1 | 0.5 | no route | Pressure regulator control valve | — | |
| W36 | OEM-2-N | MAXXECUPRO-C1-C1 | 0.5 | no route | EGR valve | — | |
| W37 | OEM-2-O | MAXXECUPRO-C1-A4 | 0.5 | no route | Switching valve | — | |
| W38 | OEM-2-P | MAXXECUPRO-C4-G1 | 0.5 | no route | Relief valve | — | |
| W39 | OEM-2-Q | MAXXECUPRO-C4-G2 | 0.5 | no route | Idle control (BAC) | — | |
| W40 | OEM-1-M | MAXXECUPRO-C4-G3 | 0.5 | no route | Ignition feedback (tacho) | — | |
| W41 | OEM-2-E | MAXXECUPRO-C1-J3 | 0.5 | no route | Airflow signal (AFM) | — | |
| W42 | OEM-2-B | MAXXECUPRO-C1-J4 | 0.5 | no route | MAP (pressure) signal | — | |
| W43 | OEM-2-G | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position (TPS) | — | |
| W44 | OEM-2-D | MAXXECUPRO-C3-C3 | 0.5 | no route | O2 sensor signal | — | |
| W45 | OEM-2-I | MAXXECUPRO-C1-J1 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W46 | OEM-2-J | MAXXECUPRO-C1-J2 | 0.5 | no route | Inlet air temperature (IAT) | — | |
| W47 | OEM-2-L | MAXXECUPRO-C4-C3 | 0.5 | no route | Manifold air temperature (MAT) | — | |
| W48 | OEM-2-F | MAXXECUPRO-C3-D1 | 0.5 | no route | Variable resistor (tuning) | — | |
| W49 | OEM-2-H | MAXXECUPRO-C3-D2 | 0.5 | no route | Atmospheric pressure (ATP) | — | |
| W50 | OEM-1-O | MAXXECUPRO-C1-K3 | 0.5 | no route | Vehicle speed (mileage sensor) | — | |
| W51 | OEM-1-E | MAXXECUPRO-C1-K4 | 0.5 | no route | A/C request | — | |
| W52 | OEM-1-G | MAXXECUPRO-C3-A3 | 0.5 | no route | Neutral switch | — | |
| W53 | OEM-1-H | MAXXECUPRO-C3-A4 | 0.5 | no route | Water temperature switch | — | |
| W54 | OEM-1-L | MAXXECUPRO-C4-D3 | 0.5 | no route | Clutch switch | — | |
| W55 | OEM-3-B | MAXXECUPRO-C3-A1 | 0.5 | no route | Starter input | — |
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 (2)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B4 | MAXXECUPRO-C1-B4 "GPO 1" drives OEM-1-F A/C clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-1-M ↔ MAXXECUPRO-C4-G3 | OEM-1-M "Ignition feedback (tacho)" [tacho_out] is wired to MAXXECUPRO-C4-G3 "GPO 25" [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-3-J | 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 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-3 J: Battery constant (+12V): MaxxECU MaxxECU PRO has no battery-constant input; not needed - 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 | Adaptronic: Select RX7 Series 4 FC Turbo plug-in pinout | https://www.rx7club.com/attachments/adaptronic-engine-mgmt-aus-311/543323d1411579751-need-pin-out-diagram-s5-pnp-rx7_s4_sel_pinout.pdf | — | — | — |
| 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 | MSExtra: FC3S CAS wiring (NE/G) | https://www.msextra.com/forums/viewtopic.php?p=279694 | — | — | — |
| 2 | forum | NoPistons: S4 Turbo II main harness wiring (ECU plug, colours only) | https://www.nopistons.com/1st-generation-specific-16/thinking-putting-89-13bt-sa22-66354/page2/ | — | — | — |