MX-5 Miata NB2 2001-05 (BP-Z3, VVT) → MaxxECU MaxxECU PRO REV10+ (auto)
MX-5 Miata NB2 2001-05 (BP-Z3, VVT) — MaxxECU — MaxxECU PRO
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04
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 | — | W32 | — | 0.5 | OEM-3-H | — | — | — |
| A2 | IGN 1 | — | W22 | — | 0.5 | OEM-3-F | — | — | — |
| A3 | IGN 2 | — | W23 | — | 0.5 | OEM-3-I | — | — | — |
| A4 | GPO 8/TACHO | — | W37 | — | 0.5 | OEM-2-F | — | — | — |
| B1 | GPO 6 | — | W35 | — | 0.5 | OEM-2-Q | — | — | — |
| B2 | IGN 3 | — | — | — | — | — | — | — | — |
| B3 | IGN 4 | — | — | — | — | — | — | — | — |
| B4 | GPO 1 | — | W28 | — | 0.5 | OEM-2-B | — | — | — |
| C1 | GPO 7 | — | W36 | — | 0.5 | OEM-2-E | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W29 | — | 0.5 | OEM-2-C | — | — | — |
| D1 | WBO2 Heater- | — | W33 | — | 0.5 | OEM-3-J | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W30 | — | 0.5 | OEM-2-K | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W31 | — | 0.5 | OEM-2-M | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W18 | — | 0.5 | OEM-4-L | — | — | — |
| G2 | TPS/AIN | — | W48 | — | 0.5 | OEM-4-V | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W19 | — | 0.5 | OEM-3-Y | — | — | — |
| H4 | HOME | — | W20 | — | 0.5 | OEM-3-V | — | — | — |
| J1 | AIN 1 (temperature) | — | W51 | — | 0.5 | OEM-4-P | — | — | — |
| J2 | AIN 2 (temperature) | — | W52 | — | 0.5 | OEM-4-N | — | — | — |
| J3 | AIN 3 (0-5V) | — | W47 | — | 0.5 | OEM-4-X | — | — | — |
| J4 | AIN 4 (0-5V) | — | W49 | — | 0.5 | OEM-4-AA | — | — | — |
| K1 | INJ 1 | — | W24 | — | 0.5 | OEM-2-A | — | — | — |
| K2 | INJ 2 | — | W25 | — | 0.5 | OEM-2-D | — | — | — |
| K3 | DIN/VR 1 | — | W54 | — | 0.5 | OEM-3-T | — | — | — |
| K4 | DIN/VR 2 | — | W55 | — | 0.5 | OEM-3-S | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | — | — | — | — | — | — | — |
| L4 | Engine GND | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W26 | — | 0.5 | OEM-2-G | — | — | — |
| M2 | INJ 4 | — | W27 | — | 0.5 | OEM-2-J | — | — | — |
| M3 | INJ 5 | — | W46 | — | 0.5 | OEM-4-D | — | — | — |
| 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 | — | W58 | — | 0.5 | OEM-4-F | — | — | — |
| A2 | DIN/VR 5 | — | — | — | — | — | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W56 | — | 0.5 | OEM-4-B | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W57 | — | 0.5 | OEM-4-C | — | — | — |
| 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) | — | W50 | — | 0.5 | OEM-4-W | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | W53 | — | 0.5 | OEM-4-AD | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | — | — | — | — | — | — | — |
| D3 | ANALOG IN 8 (0-5V) | — | — | — | — | — | — | — | — |
| D4 | GPO 20 (12V) | — | — | — | — | — | — | — | — |
| E1 | GPO 10/WBO2 2 HTR | — | W34 | — | 0.5 | OEM-3-P | — | — | — |
| 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 | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W17 | — | 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) | — | W59 | — | 0.5 | OEM-4-H | — | — | — |
| D4 | DIN 9 (switch) | — | W60 | — | 0.5 | OEM-4-I | — | — | — |
| E1 | DIN 10 (switch) | — | W61 | — | 0.5 | OEM-4-J | — | — | — |
| E2 | DIN 11 (switch) | — | — | — | — | — | — | — | — |
| E3 | +5V sensor supply 3 | — | — | — | — | — | — | — | — |
| E4 | 5-10V sensor supply | — | — | — | — | — | — | — | — |
| F1 | GPO 23-30 flyback | — | — | — | — | — | — | — | — |
| F2 | Knock 1 | — | W21 | — | 0.5 | OEM-4-M | — | — | — |
| F3 | Knock 2 | — | — | — | — | — | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W38 | — | 0.5 | OEM-2-H | — | — | — |
| G2 | GPO 24 | — | W39 | — | 0.5 | OEM-2-I | — | — | — |
| G3 | GPO 25 | — | W40 | — | 0.5 | OEM-2-N | — | — | — |
| G4 | GPO 26 | — | W41 | — | 0.5 | OEM-2-R | — | — | — |
| H1 | GPO 27 | — | W42 | — | 0.5 | OEM-3-D | — | — | — |
| H2 | GPO 28 | — | W43 | — | 0.5 | OEM-3-E | — | — | — |
| H3 | GPO 29 | — | W44 | — | 0.5 | OEM-3-M | — | — | — |
| H4 | GPO 30 | — | W45 | — | 0.5 | OEM-3-U | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W24 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| B | Cooling fan relay | — | W28 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| C | Condenser fan relay | — | W29 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| D | Injector 2 | — | W25 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| E | EGR valve | — | W36 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| F | EGR valve | — | W37 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| G | Injector 3 | — | W26 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
| H | EGR valve | — | W38 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
| I | EGR valve | — | W39 | — | 0.5 | MAXXECUPRO-C4-G2 | — | — | — |
| J | Injector 4 | — | W27 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| K | A/C clutch relay | — | W30 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
| M | Fuel pump relay | — | W31 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | W40 | — | 0.5 | MAXXECUPRO-C4-G3 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W35 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | W41 | — | 0.5 | MAXXECUPRO-C4-G4 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| D | EGR boost solenoid | — | W42 | — | 0.5 | MAXXECUPRO-C4-H1 | — | — | — |
| E | Charcoal canister purge | — | W43 | — | 0.5 | MAXXECUPRO-C4-H2 | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W22 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| H | Main relay | — | W32 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W23 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| J | Front O2 heater | — | W33 | — | 0.5 | MAXXECUPRO-C1-D1 | — | — | — |
| M | Alternator control | — | W44 | — | 0.5 | MAXXECUPRO-C4-H3 | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | W34 | — | 0.5 | MAXXECUPRO-C3-E1 | — | — | — |
| S | Immobiliser | — | W55 | — | 0.5 | MAXXECUPRO-C1-K4 | — | — | — |
| T | Vehicle speed | — | W54 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| U | Charge lamp | — | W45 | — | 0.5 | MAXXECUPRO-C4-H4 | — | — | — |
| V | Cam position (CMP) | — | W20 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| Y | Crank position (CKP) | — | W19 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W49 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| AD | Fuel level | — | W53 | — | 0.5 | MAXXECUPRO-C3-D1 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | — | — | — | — | — | — | — |
| B | Brake switch | — | W56 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| C | Power steering pressure switch | — | W57 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| D | VVT oil-control solenoid | — | W46 | — | 0.5 | MAXXECUPRO-C1-M3 | — | — | — |
| F | A/C request | — | W58 | — | 0.5 | MAXXECUPRO-C3-A1 | — | — | — |
| H | Neutral switch | — | W59 | — | 0.5 | MAXXECUPRO-C4-D3 | — | — | — |
| I | Clutch switch | — | W60 | — | 0.5 | MAXXECUPRO-C4-D4 | — | — | — |
| J | VTCS vacuum switch | — | W61 | — | 0.5 | MAXXECUPRO-C4-E1 | — | — | — |
| L | +5V sensor supply | — | W18 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
| M | Knock sensor | — | W21 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| N | Intake air temperature (IAT) | — | W52 | — | 0.5 | MAXXECUPRO-C1-J2 | — | — | — |
| O | Signal ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W51 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
| V | Throttle position (TPS) | — | W48 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| W | Front O2 signal | — | W50 | — | 0.5 | MAXXECUPRO-C3-C3 | — | — | — |
| X | Mass air flow (MAF) | — | W47 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 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-3-A | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-4-A | — | — | — |
| 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-2-A | Injector 1 | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-2-B | Cooling fan relay | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-2-C | Condenser fan relay | low_side_out | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-2-D | Injector 2 | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-2-E | EGR valve | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-2-F | EGR valve | low_side_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-2-G | Injector 3 | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-2-H | EGR valve | low_side_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | single_source | |
| OEM-2-I | EGR valve | low_side_out | MAXXECUPRO-C4-G2 | GPO 24 | low_side_out | single_source | |
| OEM-2-J | Injector 4 | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | single_source | |
| OEM-2-K | A/C clutch relay | low_side_out | MAXXECUPRO-C1-D4 | GPO 3 | low_side_out | single_source | |
| OEM-2-M | Fuel pump relay | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | MAXXECUPRO-C4-G3 | GPO 25 | low_side_out | single_source | |
| OEM-2-P | ISC valve +14V feed | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-2-Q | ISC valve low side | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | MAXXECUPRO-C4-G4 | GPO 26 | low_side_out | 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 | 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-D | EGR boost solenoid | low_side_out | MAXXECUPRO-C4-H1 | GPO 27 | low_side_out | single_source | |
| OEM-3-E | Charcoal canister purge | low_side_out | MAXXECUPRO-C4-H2 | GPO 28 | low_side_out | single_source | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | single_source | |
| OEM-3-H | Main relay | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | single_source | |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | single_source | |
| OEM-3-J | Front O2 heater | low_side_out | MAXXECUPRO-C1-D1 | WBO2 Heater- | low_side_out | single_source | |
| OEM-3-M | Alternator control | low_side_out | MAXXECUPRO-C4-H3 | GPO 29 | low_side_out | single_source | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-3-P | Rear O2 heater | low_side_out | MAXXECUPRO-C3-E1 | GPO 10/WBO2 2 HTR | low_side_out | single_source | |
| OEM-3-S | Immobiliser | digital_in | MAXXECUPRO-C1-K4 | DIN/VR 2 | digital_in | single_source | |
| OEM-3-T | Vehicle speed | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-3-U | Charge lamp | low_side_out | MAXXECUPRO-C4-H4 | GPO 30 | low_side_out | single_source | |
| OEM-3-V | Cam position (CMP) | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | single_source | |
| OEM-3-Y | Crank position (CKP) | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | single_source | |
| OEM-4-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-4-AA | Rear O2 signal | lambda_nb_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-4-AD | Fuel level | analog_in | MAXXECUPRO-C3-D1 | ANALOG IN 6 (0-5V) | analog_in | single_source | |
| OEM-4-AF | ECU power +14V (main relay) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-4-AG | Constant +12V | power_in | — | — | — | single_source | |
| OEM-4-B | Brake switch | digital_in | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | single_source | |
| OEM-4-C | Power steering pressure switch | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | single_source | |
| OEM-4-D | VVT oil-control solenoid | low_side_out | MAXXECUPRO-C1-M3 | INJ 5 | injector_out | single_source | |
| OEM-4-F | A/C request | digital_in | MAXXECUPRO-C3-A1 | DIN/VR 4 | digital_in | single_source | |
| OEM-4-H | Neutral switch | digital_in | MAXXECUPRO-C4-D3 | DIN 8 (switch) | digital_in | single_source | |
| OEM-4-I | Clutch switch | digital_in | MAXXECUPRO-C4-D4 | DIN 9 (switch) | digital_in | single_source | |
| OEM-4-J | VTCS vacuum switch | digital_in | MAXXECUPRO-C4-E1 | DIN 10 (switch) | digital_in | single_source | |
| OEM-4-L | +5V sensor supply | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-4-M | Knock sensor | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | knock_in | single_source | |
| OEM-4-N | Intake air temperature (IAT) | temp_in | MAXXECUPRO-C1-J2 | AIN 2 (temperature) | temp_in | single_source | |
| OEM-4-O | Signal 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-4-P | Coolant temperature (ECT) | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-4-V | Throttle position (TPS) | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-4-W | Front O2 signal | lambda_nb_in | MAXXECUPRO-C3-C3 | ANALOG IN 5 (0-5V) | analog_in | single_source | |
| OEM-4-X | Mass air flow (MAF) | analog_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| 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-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-4-A | 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-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W14 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W15 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W16 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W17 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W18 | OEM-4-L | MAXXECUPRO-C1-G1 | 0.5 | no route | +5V sensor supply | — | |
| W19 | OEM-3-Y | MAXXECUPRO-C1-H3 | 0.5 | no route | Crank position (CKP) | — | |
| W20 | OEM-3-V | MAXXECUPRO-C1-H4 | 0.5 | no route | Cam position (CMP) | — | |
| W21 | OEM-4-M | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock sensor | — | |
| W22 | OEM-3-F | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W23 | OEM-3-I | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W24 | OEM-2-A | MAXXECUPRO-C1-K1 | 0.5 | no route | Injector 1 | — | |
| W25 | OEM-2-D | MAXXECUPRO-C1-K2 | 0.5 | no route | Injector 2 | — | |
| W26 | OEM-2-G | MAXXECUPRO-C1-M1 | 0.5 | no route | Injector 3 | — | |
| W27 | OEM-2-J | MAXXECUPRO-C1-M2 | 0.5 | no route | Injector 4 | — | |
| W28 | OEM-2-B | MAXXECUPRO-C1-B4 | 0.5 | no route | Cooling fan relay | — | |
| W29 | OEM-2-C | MAXXECUPRO-C1-C4 | 0.5 | no route | Condenser fan relay | — | |
| W30 | OEM-2-K | MAXXECUPRO-C1-D4 | 0.5 | no route | A/C clutch relay | — | |
| W31 | OEM-2-M | MAXXECUPRO-C1-E4 | 0.5 | no route | Fuel pump relay | — | |
| W32 | OEM-3-H | MAXXECUPRO-C1-A1 | 0.5 | no route | Main relay | — | |
| W33 | OEM-3-J | MAXXECUPRO-C1-D1 | 0.5 | no route | Front O2 heater | — | |
| W34 | OEM-3-P | MAXXECUPRO-C3-E1 | 0.5 | no route | Rear O2 heater | — | |
| W35 | OEM-2-Q | MAXXECUPRO-C1-B1 | 0.5 | no route | ISC valve low side | — | |
| W36 | OEM-2-E | MAXXECUPRO-C1-C1 | 0.5 | no route | EGR valve | — | |
| W37 | OEM-2-F | MAXXECUPRO-C1-A4 | 0.5 | no route | EGR valve | — | |
| W38 | OEM-2-H | MAXXECUPRO-C4-G1 | 0.5 | no route | EGR valve | — | |
| W39 | OEM-2-I | MAXXECUPRO-C4-G2 | 0.5 | no route | EGR valve | — | |
| W40 | OEM-2-N | MAXXECUPRO-C4-G3 | 0.5 | no route | VTCS solenoid (intake butterflies) | — | |
| W41 | OEM-2-R | MAXXECUPRO-C4-G4 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W42 | OEM-3-D | MAXXECUPRO-C4-H1 | 0.5 | no route | EGR boost solenoid | — | |
| W43 | OEM-3-E | MAXXECUPRO-C4-H2 | 0.5 | no route | Charcoal canister purge | — | |
| W44 | OEM-3-M | MAXXECUPRO-C4-H3 | 0.5 | no route | Alternator control | — | |
| W45 | OEM-3-U | MAXXECUPRO-C4-H4 | 0.5 | no route | Charge lamp | — | |
| W46 | OEM-4-D | MAXXECUPRO-C1-M3 | 0.5 | no route | VVT oil-control solenoid | — | |
| W47 | OEM-4-X | MAXXECUPRO-C1-J3 | 0.5 | no route | Mass air flow (MAF) | — | |
| W48 | OEM-4-V | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position (TPS) | — | |
| W49 | OEM-4-AA | MAXXECUPRO-C1-J4 | 0.5 | no route | Rear O2 signal | — | |
| W50 | OEM-4-W | MAXXECUPRO-C3-C3 | 0.5 | no route | Front O2 signal | — | |
| W51 | OEM-4-P | MAXXECUPRO-C1-J1 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W52 | OEM-4-N | MAXXECUPRO-C1-J2 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W53 | OEM-4-AD | MAXXECUPRO-C3-D1 | 0.5 | no route | Fuel level | — | |
| W54 | OEM-3-T | MAXXECUPRO-C1-K3 | 0.5 | no route | Vehicle speed | — | |
| W55 | OEM-3-S | MAXXECUPRO-C1-K4 | 0.5 | no route | Immobiliser | — | |
| W56 | OEM-4-B | MAXXECUPRO-C3-A3 | 0.5 | no route | Brake switch | — | |
| W57 | OEM-4-C | MAXXECUPRO-C3-A4 | 0.5 | no route | Power steering pressure switch | — | |
| W58 | OEM-4-F | MAXXECUPRO-C3-A1 | 0.5 | no route | A/C request | — | |
| W59 | OEM-4-H | MAXXECUPRO-C4-D3 | 0.5 | no route | Neutral switch | — | |
| W60 | OEM-4-I | MAXXECUPRO-C4-D4 | 0.5 | no route | Clutch switch | — | |
| W61 | OEM-4-J | MAXXECUPRO-C4-E1 | 0.5 | no route | VTCS vacuum 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-3-H Main 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-2-Q ISC valve low side (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B4 | MAXXECUPRO-C1-B4 "GPO 1" drives OEM-2-B Cooling fan relay (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-2-C Condenser fan 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-2-K A/C clutch 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-2-M Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-4-D ↔ MAXXECUPRO-C1-M3 | OEM-4-D "VVT oil-control solenoid" [low_side_out] is wired to MAXXECUPRO-C1-M3 "INJ 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-3-O Tachometer output |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-4-AG | 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 2026-10-04. Review every wire against both manuals before building. Not wired: - OEM-4 AG: Constant +12V: MaxxECU MaxxECU PRO has no battery-constant input; not needed - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU PRO - 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 |
|---|---|---|---|
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf |
| 4 | vendor_doc | MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO) | http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html |