MX-5 Miata NB1 1999-00 (BP-4W) → MaxxECU MaxxECU RACE REV9+ (auto)
MX-5 Miata NB1 1999-00 (BP-4W) — MaxxECU — MaxxECU RACE
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECURACE-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | GPO 5 | — | W27 | — | 0.5 | OEM-3-V | — | — | — |
| A2 | IGN 1 | — | W16 | — | 0.5 | OEM-3-G | — | — | — |
| A3 | IGN 2 | — | W17 | — | 0.5 | OEM-3-H | — | — | — |
| A4 | GPO 8/TACHO | — | W30 | — | 0.5 | OEM-1-O | — | — | — |
| B1 | GPO 6 | — | W28 | — | 0.5 | OEM-3-O | — | — | — |
| B2 | IGN 3 | — | — | — | — | — | — | — | — |
| B3 | IGN 4 | — | — | — | — | — | — | — | — |
| B4 | GPO 1 | — | W22 | — | 0.5 | OEM-1-I | — | — | — |
| C1 | GPO 7 | — | W29 | — | 0.5 | OEM-1-E | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W23 | — | 0.5 | OEM-1-R | — | — | — |
| D1 | WBO2 Heater- | — | W26 | — | 0.5 | OEM-1-U | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W24 | — | 0.5 | OEM-1-S | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W25 | — | 0.5 | OEM-3-N | — | — | — |
| F1 | CLT | — | — | — | — | — | — | — | — |
| F2 | IAT | — | — | — | — | — | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W12 | — | 0.5 | OEM-2-I | — | — | — |
| G2 | TPS/AIN | — | W40 | — | 0.5 | OEM-3-E | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W13 | — | 0.5 | OEM-2-J | — | — | — |
| H4 | HOME | — | W14 | — | 0.5 | OEM-2-H | — | — | — |
| J1 | AIN 1 (temperature) | — | W43 | — | 0.5 | OEM-2-E | — | — | — |
| J2 | AIN 2 (temperature) | — | W44 | — | 0.5 | OEM-2-B | — | — | — |
| J3 | AIN 3 (0-5V) | — | W39 | — | 0.5 | OEM-2-L | — | — | — |
| J4 | AIN 4 (0-5V) | — | W41 | — | 0.5 | OEM-2-C | — | — | — |
| K1 | INJ 1 | — | W18 | — | 0.5 | OEM-3-W | — | — | — |
| K2 | INJ 2 | — | W19 | — | 0.5 | OEM-3-X | — | — | — |
| K3 | DIN/VR 1 | — | W48 | — | 0.5 | OEM-2-D | — | — | — |
| K4 | DIN/VR 2 | — | W49 | — | 0.5 | OEM-1-F | — | — | — |
| L1 | INJ 8 | — | W34 | — | 0.5 | OEM-2-O | — | — | — |
| L2 | INJ 7 | — | W33 | — | 0.5 | OEM-2-N | — | — | — |
| L3 | INJ 6 | — | W32 | — | 0.5 | OEM-2-M | — | — | — |
| L4 | Engine GND | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W20 | — | 0.5 | OEM-3-Y | — | — | — |
| M2 | INJ 4 | — | W21 | — | 0.5 | OEM-3-Z | — | — | — |
| M3 | INJ 5 | — | W31 | — | 0.5 | OEM-1-Q | — | — | — |
| M4 | +12V ECU power supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECURACE-C2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | EGT 5+ | — | — | — | — | — | — | — | — |
| A2 | EGT 6+ | — | — | — | — | — | — | — | — |
| A3 | EGT 7+ | — | — | — | — | — | — | — | — |
| A4 | EGT 8+ | — | — | — | — | — | — | — | — |
| B1 | EGT 5- | — | — | — | — | — | — | — | — |
| B2 | EGT 6- | — | — | — | — | — | — | — | — |
| B3 | EGT 7- | — | — | — | — | — | — | — | — |
| B4 | EGT 8- | — | — | — | — | — | — | — | — |
| C1 | EGT 1+ | — | — | — | — | — | — | — | — |
| C2 | EGT 2+ | — | — | — | — | — | — | — | — |
| C3 | EGT 3+ | — | — | — | — | — | — | — | — |
| C4 | EGT 4+ | — | — | — | — | — | — | — | — |
| D1 | EGT 1- | — | — | — | — | — | — | — | — |
| D2 | EGT 2- | — | — | — | — | — | — | — | — |
| D3 | EGT 3- | — | — | — | — | — | — | — | — |
| D4 | EGT 4- | — | — | — | — | — | — | — | — |
| E1 | KNOCK GND | — | — | — | — | — | — | — | — |
| E2 | Knock 1 | — | W15 | — | 0.5 | OEM-2-F | — | — | — |
| E3 | Knock 2 | — | — | — | — | — | — | — | — |
| E4 | AIN 6 (0-5V) | — | W45 | — | 0.5 | OEM-2-A | — | — | — |
| F1 | AIN 7 (0-5V) | — | W46 | — | 0.5 | OEM-3-K | — | — | — |
| F2 | AIN 8 (0-5V) | — | W47 | — | 0.5 | OEM-3-S | — | — | — |
| F3 | DIN/VR 4 | — | W50 | — | 0.5 | OEM-1-G | — | — | — |
| F4 | DIN/VR 5 | — | W51 | — | 0.5 | OEM-1-P | — | — | — |
| G1 | GPO 15 (+12V) | — | — | — | — | — | — | — | — |
| G2 | GPO 16 (+12V) | — | — | — | — | — | — | — | — |
| G3 | AIN 5 (0-5V) | — | W42 | — | 0.5 | OEM-3-J | — | — | — |
| G4 | ENGINE GROUND | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| H1 | MOTOR 2+ | — | W37 | — | 0.5 | OEM-3-Q | — | — | — |
| H2 | MOTOR 1- | — | W35 | — | 0.5 | OEM-2-P | — | — | — |
| H3 | MOTOR 2- | — | W38 | — | 0.5 | OEM-3-T | — | — | — |
| H4 | MOTOR 1+ | — | W36 | — | 0.5 | OEM-3-L | — | — | — |
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Constant +12V | — | — | — | — | — | — | — | — |
| B | ECU power +14V (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| E | Malfunction indicator lamp (MIL) | — | W29 | — | 0.5 | MAXXECURACE-C1-C1 | — | — | — |
| F | Brake switch | — | W49 | — | 0.5 | MAXXECURACE-C1-K4 | — | — | — |
| G | Power steering pressure switch | — | W50 | — | 0.5 | MAXXECURACE-C2-F3 | — | — | — |
| I | Condenser fan relay | — | W22 | — | 0.5 | MAXXECURACE-C1-B4 | — | — | — |
| O | Alternator control | — | W30 | — | 0.5 | MAXXECURACE-C1-A4 | — | — | — |
| P | A/C request | — | W51 | — | 0.5 | MAXXECURACE-C2-F4 | — | — | — |
| Q | Charge lamp | — | W31 | — | 0.5 | MAXXECURACE-C1-M3 | — | — | — |
| R | Cooling fan relay | — | W23 | — | 0.5 | MAXXECURACE-C1-C4 | — | — | — |
| S | A/C clutch relay | — | W24 | — | 0.5 | MAXXECURACE-C1-D4 | — | — | — |
| U | Front O2 heater | — | W26 | — | 0.5 | MAXXECURACE-C1-D1 | — | — | — |
| V | Neutral switch | — | — | — | — | — | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Fuel tank pressure | — | W45 | — | 0.5 | MAXXECURACE-C2-E4 | — | — | — |
| B | Intake air temperature (IAT) | — | W44 | — | 0.5 | MAXXECURACE-C1-J2 | — | — | — |
| C | Front O2 signal | — | W41 | — | 0.5 | MAXXECURACE-C1-J4 | — | — | — |
| D | Vehicle speed | — | W48 | — | 0.5 | MAXXECURACE-C1-K3 | — | — | — |
| E | Coolant temperature (ECT) | — | W43 | — | 0.5 | MAXXECURACE-C1-J1 | — | — | — |
| F | Knock sensor | — | W15 | — | 0.5 | MAXXECURACE-C2-E2 | — | — | — |
| H | Cam position (CMP) | — | W14 | — | 0.5 | MAXXECURACE-C1-H4 | — | — | — |
| I | +5V sensor supply | — | W12 | — | 0.5 | MAXXECURACE-C1-G1 | — | — | — |
| J | Crank position (CKP) | — | W13 | — | 0.5 | MAXXECURACE-C1-H3 | — | — | — |
| K | Tachometer output | — | — | — | — | — | — | — | — |
| L | Mass air flow (MAF) | — | W39 | — | 0.5 | MAXXECURACE-C1-J3 | — | — | — |
| M | EGR valve | — | W32 | — | 0.5 | MAXXECURACE-C1-L3 | — | — | — |
| N | EGR valve | — | W33 | — | 0.5 | MAXXECURACE-C1-L2 | — | — | — |
| O | EGR valve | — | W34 | — | 0.5 | MAXXECURACE-C1-L1 | — | — | — |
| P | EGR valve | — | W35 | — | 0.5 | MAXXECURACE-C2-H2 | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| C | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Throttle position (TPS) | — | W40 | — | 0.5 | MAXXECURACE-C1-G2 | — | — | — |
| F | Signal ground | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W16 | — | 0.5 | MAXXECURACE-C1-A2 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W17 | — | 0.5 | MAXXECURACE-C1-A3 | — | — | — |
| I | Clutch switch | — | — | — | — | — | — | — | — |
| J | Rear O2 signal | — | W42 | — | 0.5 | MAXXECURACE-C2-G3 | — | — | — |
| K | Fuel level | — | W46 | — | 0.5 | MAXXECURACE-C2-F1 | — | — | — |
| L | Evap purge solenoid | — | W36 | — | 0.5 | MAXXECURACE-C2-H4 | — | — | — |
| M | ISC valve +14V feed | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| N | Fuel pump relay | — | W25 | — | 0.5 | MAXXECURACE-C1-E4 | — | — | — |
| O | ISC valve low side | — | W28 | — | 0.5 | MAXXECURACE-C1-B1 | — | — | — |
| Q | VICS solenoid (intake butterflies) | — | W37 | — | 0.5 | MAXXECURACE-C2-H1 | — | — | — |
| S | EGR boost sensor | — | W47 | — | 0.5 | MAXXECURACE-C2-F2 | — | — | — |
| T | EGR boost solenoid | — | W38 | — | 0.5 | MAXXECURACE-C2-H3 | — | — | — |
| U | Canister drain cut valve (CDCV) | — | — | — | — | — | — | — | — |
| V | Rear O2 heater | — | W27 | — | 0.5 | MAXXECURACE-C1-A1 | — | — | — |
| W | Injector 1 | — | W18 | — | 0.5 | MAXXECURACE-C1-K1 | — | — | — |
| X | Injector 2 | — | W19 | — | 0.5 | MAXXECURACE-C1-K2 | — | — | — |
| Y | Injector 3 | — | W20 | — | 0.5 | MAXXECURACE-C1-M1 | — | — | — |
| Z | Injector 4 | — | W21 | — | 0.5 | MAXXECURACE-C1-M2 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W9 | — | 0.5 | OEM-3-F | — | — | — |
| 1 | — | — | W10 | — | 0.5 | MAXXECURACE-C1-H1 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | MAXXECURACE-C1-H2 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-1-B | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-3-M | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MAXXECURACE-C1-M4 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-C | — | — | — |
| 1 | — | — | W7 | — | 0.85 | MAXXECURACE-C1-L4 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MAXXECURACE-C2-G4 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-A | Constant +12V | power_in | — | — | — | single_source | |
| OEM-1-B | ECU power +14V (main relay) | power_in | MAXXECURACE-C1-M4 | +12V ECU power supply | power_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | MAXXECURACE-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-1-F | Brake switch | digital_in | MAXXECURACE-C1-K4 | DIN/VR 2 | digital_in | single_source | |
| OEM-1-G | Power steering pressure switch | digital_in | MAXXECURACE-C2-F3 | DIN/VR 4 | digital_in | single_source | |
| OEM-1-I | Condenser fan relay | low_side_out | MAXXECURACE-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-1-O | Alternator control | low_side_out | MAXXECURACE-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-1-P | A/C request | digital_in | MAXXECURACE-C2-F4 | DIN/VR 5 | digital_in | single_source | |
| OEM-1-Q | Charge lamp | low_side_out | MAXXECURACE-C1-M3 | INJ 5 | injector_out | single_source | |
| OEM-1-R | Cooling fan relay | low_side_out | MAXXECURACE-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-1-S | A/C clutch relay | low_side_out | MAXXECURACE-C1-D4 | GPO 3 | low_side_out | single_source | |
| OEM-1-U | Front O2 heater | low_side_out | MAXXECURACE-C1-D1 | WBO2 Heater- | low_side_out | single_source | |
| OEM-1-V | Neutral switch | digital_in | — | — | — | single_source | |
| OEM-2-A | Fuel tank pressure | analog_in | MAXXECURACE-C2-E4 | AIN 6 (0-5V) | analog_in | single_source | |
| OEM-2-B | Intake air temperature (IAT) | temp_in | MAXXECURACE-C1-J2 | AIN 2 (temperature) | temp_in | single_source | |
| OEM-2-C | Front O2 signal | lambda_nb_in | MAXXECURACE-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-2-D | Vehicle speed | digital_in | MAXXECURACE-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-2-E | Coolant temperature (ECT) | temp_in | MAXXECURACE-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-2-F | Knock sensor | knock_in | MAXXECURACE-C2-E2 | Knock 1 | knock_in | single_source | |
| OEM-2-H | Cam position (CMP) | trigger_in | MAXXECURACE-C1-H4 | HOME | trigger_in | single_source | |
| OEM-2-I | +5V sensor supply | vref | MAXXECURACE-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-2-J | Crank position (CKP) | trigger_in | MAXXECURACE-C1-H3 | TRIGGER | trigger_in | single_source | |
| OEM-2-K | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-2-L | Mass air flow (MAF) | analog_in | MAXXECURACE-C1-J3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-2-M | EGR valve | low_side_out | MAXXECURACE-C1-L3 | INJ 6 | injector_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | MAXXECURACE-C1-L2 | INJ 7 | injector_out | single_source | |
| OEM-2-O | EGR valve | low_side_out | MAXXECURACE-C1-L1 | INJ 8 | injector_out | single_source | |
| OEM-2-P | EGR valve | low_side_out | MAXXECURACE-C2-H2 | MOTOR 1- | hbridge_out | single_source | |
| OEM-3-A | Power ground | ground | MAXXECURACE-C1-L4 + MAXXECURACE-C2-G4 | Engine GND + ENGINE GROUND | ground | single_source | |
| OEM-3-B | Power ground | ground | MAXXECURACE-C1-L4 + MAXXECURACE-C2-G4 | Engine GND + ENGINE GROUND | ground | single_source | |
| OEM-3-C | Power ground | ground | MAXXECURACE-C1-L4 + MAXXECURACE-C2-G4 | Engine GND + ENGINE GROUND | ground | single_source | |
| OEM-3-E | Throttle position (TPS) | analog_in | MAXXECURACE-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-3-F | Signal ground | sensor_ground | MAXXECURACE-C1-H1 + MAXXECURACE-C1-H2 | Sensor GND + Trigger GND | sensor_ground | single_source | |
| OEM-3-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | MAXXECURACE-C1-A2 | IGN 1 | ignition_out | single_source | |
| OEM-3-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | MAXXECURACE-C1-A3 | IGN 2 | ignition_out | single_source | |
| OEM-3-I | Clutch switch | digital_in | — | — | — | single_source | |
| OEM-3-J | Rear O2 signal | lambda_nb_in | MAXXECURACE-C2-G3 | AIN 5 (0-5V) | analog_in | single_source | |
| OEM-3-K | Fuel level | analog_in | MAXXECURACE-C2-F1 | AIN 7 (0-5V) | analog_in | single_source | |
| OEM-3-L | Evap purge solenoid | low_side_out | MAXXECURACE-C2-H4 | MOTOR 1+ | hbridge_out | single_source | |
| OEM-3-M | ISC valve +14V feed | power_in | MAXXECURACE-C1-M4 | +12V ECU power supply | power_in | single_source | |
| OEM-3-N | Fuel pump relay | low_side_out | MAXXECURACE-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-3-O | ISC valve low side | low_side_out | MAXXECURACE-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-3-Q | VICS solenoid (intake butterflies) | low_side_out | MAXXECURACE-C2-H1 | MOTOR 2+ | hbridge_out | single_source | |
| OEM-3-S | EGR boost sensor | analog_in | MAXXECURACE-C2-F2 | AIN 8 (0-5V) | analog_in | single_source | |
| OEM-3-T | EGR boost solenoid | low_side_out | MAXXECURACE-C2-H3 | MOTOR 2- | hbridge_out | single_source | |
| OEM-3-U | Canister drain cut valve (CDCV) | low_side_out | — | — | — | single_source | |
| OEM-3-V | Rear O2 heater | low_side_out | MAXXECURACE-C1-A1 | GPO 5 | low_side_out | single_source | |
| OEM-3-W | Injector 1 | injector_out | MAXXECURACE-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-3-X | Injector 2 | injector_out | MAXXECURACE-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-3-Y | Injector 3 | injector_out | MAXXECURACE-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-3-Z | Injector 4 | injector_out | MAXXECURACE-C1-M2 | INJ 4 | injector_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-1-B | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W2 | OEM-3-M | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W3 | SP-14V-1 | MAXXECURACE-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W5 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-C | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | SP-GND-1 | MAXXECURACE-C1-L4 | 0.85 | no route | Engine GND | — | |
| W8 | SP-GND-1 | MAXXECURACE-C2-G4 | 0.85 | no route | ENGINE GROUND | — | |
| W9 | OEM-3-F | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W10 | SP-0V-1 | MAXXECURACE-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W11 | SP-0V-1 | MAXXECURACE-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W12 | OEM-2-I | MAXXECURACE-C1-G1 | 0.5 | no route | +5V sensor supply | — | |
| W13 | OEM-2-J | MAXXECURACE-C1-H3 | 0.5 | no route | Crank position (CKP) | — | |
| W14 | OEM-2-H | MAXXECURACE-C1-H4 | 0.5 | no route | Cam position (CMP) | — | |
| W15 | OEM-2-F | MAXXECURACE-C2-E2 | 0.5 | no route | Knock sensor | — | |
| W16 | OEM-3-G | MAXXECURACE-C1-A2 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W17 | OEM-3-H | MAXXECURACE-C1-A3 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W18 | OEM-3-W | MAXXECURACE-C1-K1 | 0.5 | no route | Injector 1 | — | |
| W19 | OEM-3-X | MAXXECURACE-C1-K2 | 0.5 | no route | Injector 2 | — | |
| W20 | OEM-3-Y | MAXXECURACE-C1-M1 | 0.5 | no route | Injector 3 | — | |
| W21 | OEM-3-Z | MAXXECURACE-C1-M2 | 0.5 | no route | Injector 4 | — | |
| W22 | OEM-1-I | MAXXECURACE-C1-B4 | 0.5 | no route | Condenser fan relay | — | |
| W23 | OEM-1-R | MAXXECURACE-C1-C4 | 0.5 | no route | Cooling fan relay | — | |
| W24 | OEM-1-S | MAXXECURACE-C1-D4 | 0.5 | no route | A/C clutch relay | — | |
| W25 | OEM-3-N | MAXXECURACE-C1-E4 | 0.5 | no route | Fuel pump relay | — | |
| W26 | OEM-1-U | MAXXECURACE-C1-D1 | 0.5 | no route | Front O2 heater | — | |
| W27 | OEM-3-V | MAXXECURACE-C1-A1 | 0.5 | no route | Rear O2 heater | — | |
| W28 | OEM-3-O | MAXXECURACE-C1-B1 | 0.5 | no route | ISC valve low side | — | |
| W29 | OEM-1-E | MAXXECURACE-C1-C1 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W30 | OEM-1-O | MAXXECURACE-C1-A4 | 0.5 | no route | Alternator control | — | |
| W31 | OEM-1-Q | MAXXECURACE-C1-M3 | 0.5 | no route | Charge lamp | — | |
| W32 | OEM-2-M | MAXXECURACE-C1-L3 | 0.5 | no route | EGR valve | — | |
| W33 | OEM-2-N | MAXXECURACE-C1-L2 | 0.5 | no route | EGR valve | — | |
| W34 | OEM-2-O | MAXXECURACE-C1-L1 | 0.5 | no route | EGR valve | — | |
| W35 | OEM-2-P | MAXXECURACE-C2-H2 | 0.5 | no route | EGR valve | — | |
| W36 | OEM-3-L | MAXXECURACE-C2-H4 | 0.5 | no route | Evap purge solenoid | — | |
| W37 | OEM-3-Q | MAXXECURACE-C2-H1 | 0.5 | no route | VICS solenoid (intake butterflies) | — | |
| W38 | OEM-3-T | MAXXECURACE-C2-H3 | 0.5 | no route | EGR boost solenoid | — | |
| W39 | OEM-2-L | MAXXECURACE-C1-J3 | 0.5 | no route | Mass air flow (MAF) | — | |
| W40 | OEM-3-E | MAXXECURACE-C1-G2 | 0.5 | no route | Throttle position (TPS) | — | |
| W41 | OEM-2-C | MAXXECURACE-C1-J4 | 0.5 | no route | Front O2 signal | — | |
| W42 | OEM-3-J | MAXXECURACE-C2-G3 | 0.5 | no route | Rear O2 signal | — | |
| W43 | OEM-2-E | MAXXECURACE-C1-J1 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W44 | OEM-2-B | MAXXECURACE-C1-J2 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W45 | OEM-2-A | MAXXECURACE-C2-E4 | 0.5 | no route | Fuel tank pressure | — | |
| W46 | OEM-3-K | MAXXECURACE-C2-F1 | 0.5 | no route | Fuel level | — | |
| W47 | OEM-3-S | MAXXECURACE-C2-F2 | 0.5 | no route | EGR boost sensor | — | |
| W48 | OEM-2-D | MAXXECURACE-C1-K3 | 0.5 | no route | Vehicle speed | — | |
| W49 | OEM-1-F | MAXXECURACE-C1-K4 | 0.5 | no route | Brake switch | — | |
| W50 | OEM-1-G | MAXXECURACE-C2-F3 | 0.5 | no route | Power steering pressure switch | — | |
| W51 | OEM-1-P | MAXXECURACE-C2-F4 | 0.5 | no route | A/C request | — |
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 (14)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | MAXXECURACE-C1-B1 | MAXXECURACE-C1-B1 "GPO 6" drives OEM-3-O ISC valve low side (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECURACE-C1-B4 | MAXXECURACE-C1-B4 "GPO 1" drives OEM-1-I Condenser fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECURACE-C1-C4 | MAXXECURACE-C1-C4 "GPO 2" drives OEM-1-R Cooling fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECURACE-C1-D4 | MAXXECURACE-C1-D4 "GPO 3" drives OEM-1-S A/C clutch relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECURACE-C1-E4 | MAXXECURACE-C1-E4 "GPO 4" drives OEM-3-N Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-2-P ↔ MAXXECURACE-C2-H2 | OEM-2-P "EGR valve" [low_side_out] is wired to MAXXECURACE-C2-H2 "MOTOR 1-" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-L ↔ MAXXECURACE-C2-H4 | OEM-3-L "Evap purge solenoid" [low_side_out] is wired to MAXXECURACE-C2-H4 "MOTOR 1+" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-Q ↔ MAXXECURACE-C2-H1 | OEM-3-Q "VICS solenoid (intake butterflies)" [low_side_out] is wired to MAXXECURACE-C2-H1 "MOTOR 2+" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-T ↔ MAXXECURACE-C2-H3 | OEM-3-T "EGR boost solenoid" [low_side_out] is wired to MAXXECURACE-C2-H3 "MOTOR 2-" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-1-Q ↔ MAXXECURACE-C1-M3 | OEM-1-Q "Charge lamp" [low_side_out] is wired to MAXXECURACE-C1-M3 "INJ 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-M ↔ MAXXECURACE-C1-L3 | OEM-2-M "EGR valve" [low_side_out] is wired to MAXXECURACE-C1-L3 "INJ 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-N ↔ MAXXECURACE-C1-L2 | OEM-2-N "EGR valve" [low_side_out] is wired to MAXXECURACE-C1-L2 "INJ 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-O ↔ MAXXECURACE-C1-L1 | OEM-2-O "EGR valve" [low_side_out] is wired to MAXXECURACE-C1-L1 "INJ 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 4 optional OEM pins are not mapped: OEM-1-V Neutral switch; OEM-2-K Tachometer output; OEM-3-I Clutch switch; OEM-3-U Canister drain cut valve (CDCV) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-1-A | 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-1 A: Constant +12V: MaxxECU MaxxECU RACE has no battery-constant input; not needed - OEM-3 U: Canister drain cut valve (CDCV): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU RACE - OEM-2 K: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU RACE - OEM-1 V: Neutral switch: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU RACE - OEM-3 I: Clutch switch: no free switch_in/frequency_in/analog_0_5 on MaxxECU MaxxECU RACE
Sources
| Reliability | Kind | Title | URL |
|---|---|---|---|
| 4 | vendor_doc | Link G4X MX5NB1X install manual (NB1 1999-00) | https://linkecu.com/documentation/MX5XNB1.pdf |
| 4 | vendor_doc | MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO) | http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html |