MX-5 Miata NB1 1999-00 (BP-4W) → MaxxECU MaxxECU GEN2 TRACK (auto)
MX-5 Miata NB1 1999-00 (BP-4W) — MaxxECU — MaxxECU GEN2 TRACK
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-05
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAXXECUGEN2T-MX1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition 1 | — | W17 | — | 0.5 | OEM-3-G | — | — | — |
| 10 | Digital/VR 1 SIGNAL + | — | W14 | — | 0.5 | OEM-2-J | — | — | — |
| 11 | Digital/VR 1 SIGNAL - | — | — | — | — | — | — | — | — |
| 12 | Digital/VR 1 POWER SUPPLY | — | W13 | — | 0.5 | OEM-2-I | — | — | — |
| 13 | Digital/VR 1 SHIELD | — | — | — | — | — | — | — | — |
| 14 | SENSOR GND | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | CAN L | — | — | — | — | — | — | — | — |
| 16 | CAN H | — | — | — | — | — | — | — | — |
| 17 | GP out 5 (GND) | — | W29 | — | 0.5 | OEM-3-O | — | — | — |
| 18 | Digital/VR 2 SIGNAL + | — | W15 | — | 0.5 | OEM-2-H | — | — | — |
| 19 | Digital/VR 2 SIGNAL - | — | — | — | — | — | — | — | — |
| 2 | Ignition 2 | — | W18 | — | 0.5 | OEM-3-H | — | — | — |
| 20 | Digital/VR 2 POWER SUPPLY | — | — | — | — | — | — | — | — |
| 21 | Digital/VR 2 SHIELD | — | — | — | — | — | — | — | — |
| 22 | 5V power supply | — | — | — | — | — | — | — | — |
| 23 | Digital/VR 3 SIGNAL + | — | W48 | — | 0.5 | OEM-2-D | — | — | — |
| 24 | Digital/VR 4 SIGNAL + | — | W49 | — | 0.5 | OEM-1-F | — | — | — |
| 25 | 12V supply 1 | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | AIN 1 | — | W39 | — | 0.5 | OEM-2-L | — | — | — |
| 27 | AIN 2 | — | W40 | — | 0.5 | OEM-3-E | — | — | — |
| 28 | AIN 3 | — | W41 | — | 0.5 | OEM-2-C | — | — | — |
| 29 | AIN 4 | — | W42 | — | 0.5 | OEM-3-J | — | — | — |
| 3 | Ignition 3 | — | — | — | — | — | — | — | — |
| 30 | AIN 5 | — | W43 | — | 0.5 | OEM-2-E | — | — | — |
| 31 | INJECTOR 1 | — | W19 | — | 0.5 | OEM-3-W | — | — | — |
| 32 | INJECTOR 2 | — | W20 | — | 0.5 | OEM-3-X | — | — | — |
| 33 | INJECTOR 3 | — | W21 | — | 0.5 | OEM-3-Y | — | — | — |
| 34 | INJECTOR 4 | — | W22 | — | 0.5 | OEM-3-Z | — | — | — |
| 4 | Ignition 4 | — | — | — | — | — | — | — | — |
| 5 | GP out 1 (GND) | — | W23 | — | 0.5 | OEM-1-I | — | — | — |
| 6 | GP out 2 (GND) | — | W24 | — | 0.5 | OEM-1-R | — | — | — |
| 7 | GP out 3 (GND) | — | W25 | — | 0.5 | OEM-1-S | — | — | — |
| 8 | GP out 4 (GND) | — | W26 | — | 0.5 | OEM-3-N | — | — | — |
| 9 | Engine gnd | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUGEN2T-MX2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition 5 | — | — | — | — | — | — | — | — |
| 10 | WBO2 Sensor 1 VS | — | — | — | — | — | — | — | — |
| 11 | WBO2 Sensor 1 COM/VREF | — | — | — | — | — | — | — | — |
| 12 | GP OUT 7 / WBO2 Sensor 1 H- | — | W27 | — | 0.5 | OEM-1-U | — | — | — |
| 13 | AIN 9 | — | W47 | — | 0.5 | OEM-3-S | — | — | — |
| 14 | AIN 10 | — | W52 | — | 0.5 | OEM-1-V | — | — | — |
| 15 | AIN 11 | — | W53 | — | 0.5 | OEM-3-I | — | — | — |
| 16 | AIN 12 | — | — | — | — | — | — | — | — |
| 17 | AIN 13 | — | — | — | — | — | — | — | — |
| 18 | WBO2 sensor 1 RCAL | — | — | — | — | — | — | — | — |
| 19 | WBO2 sensor 1 IP | — | — | — | — | — | — | — | — |
| 2 | Ignition 6 | — | — | — | — | — | — | — | — |
| 20 | 12V WBO2 sensor 1 H+ | — | — | — | — | — | — | — | — |
| 21 | WBO2 sensor 1 SHIELD | — | — | — | — | — | — | — | — |
| 22 | AIN 14 | — | — | — | — | — | — | — | — |
| 23 | AIN 15 | — | — | — | — | — | — | — | — |
| 24 | 12V supply 3 | — | — | — | — | — | — | — | — |
| 25 | 12V supply 2 | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 26 | KNOCK1 SHIELD | — | — | — | — | — | — | — | — |
| 27 | KNOCK 1- | — | — | — | — | — | — | — | — |
| 28 | KNOCK 1+ | — | W16 | — | 0.5 | OEM-2-F | — | — | — |
| 29 | KNOCK 2 SHIELD | — | — | — | — | — | — | — | — |
| 3 | GP out 6 (GND) | — | W30 | — | 0.5 | OEM-1-E | — | — | — |
| 30 | KNOCK 2- | — | — | — | — | — | — | — | — |
| 31 | KNOCK 2+ | — | — | — | — | — | — | — | — |
| 32 | AIN 16 | — | — | — | — | — | — | — | — |
| 33 | INJECTOR 5 | — | W31 | — | 0.5 | OEM-1-O | — | — | — |
| 34 | INJECTOR 6 | — | W32 | — | 0.5 | OEM-1-Q | — | — | — |
| 4 | AIN 6 | — | W44 | — | 0.5 | OEM-2-B | — | — | — |
| 5 | AIN 7 | — | W45 | — | 0.5 | OEM-2-A | — | — | — |
| 6 | AIN 8 | — | W46 | — | 0.5 | OEM-3-K | — | — | — |
| 7 | GP out 13 (H-BRIDGE 1) | — | W35 | — | 0.5 | OEM-2-O | — | — | — |
| 8 | GP out 14 (H-BRIDGE 1) | — | W36 | — | 0.5 | OEM-2-P | — | — | — |
| 9 | Engine gnd | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUGEN2T-MX3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | GP out 15 (H-BRIDGE 2) | — | W37 | — | 0.5 | OEM-3-L | — | — | — |
| 10 | WBO2 sensor 2 VS | — | — | — | — | — | — | — | — |
| 11 | WBO2 sensor 2 COM/VREF | — | — | — | — | — | — | — | — |
| 12 | GP Out 8 (GND) / WBO2 Sensor 2 H- | — | W28 | — | 0.5 | OEM-3-V | — | — | — |
| 14 | GP OUT 9 (12V) | — | — | — | — | — | — | — | — |
| 15 | GP OUT 10 (12V) | — | — | — | — | — | — | — | — |
| 16 | GP OUT 11 (12V) | — | — | — | — | — | — | — | — |
| 17 | GP OUT 12 (12V) | — | — | — | — | — | — | — | — |
| 18 | WBO2 sensor 2 RCAL | — | — | — | — | — | — | — | — |
| 19 | WBO2 sensor 2 IP | — | — | — | — | — | — | — | — |
| 2 | GP out 16 (H-BRIDGE 2) | — | W38 | — | 0.5 | OEM-3-Q | — | — | — |
| 20 | 12V WBO2 sensor 2 (H+) | — | — | — | — | — | — | — | — |
| 21 | Digital/VR 5 SIGNAL + | — | W50 | — | 0.5 | OEM-1-G | — | — | — |
| 22 | Digital/VR 5 SIGNAL - | — | — | — | — | — | — | — | — |
| 23 | Digital/VR 5 SHIELD | — | — | — | — | — | — | — | — |
| 24 | CAN 2 L | — | — | — | — | — | — | — | — |
| 25 | CAN 2 H | — | — | — | — | — | — | — | — |
| 26 | Digital/VR 6 SIGNAL + | — | W51 | — | 0.5 | OEM-1-P | — | — | — |
| 27 | Digital/VR 6 SIGNAL - | — | — | — | — | — | — | — | — |
| 28 | Digital/VR 6 SHIELD | — | — | — | — | — | — | — | — |
| 29 | INJECTOR 7 | — | W33 | — | 0.5 | OEM-2-M | — | — | — |
| 3 | Ignition 7 | — | — | — | — | — | — | — | — |
| 30 | INJECTOR 8 | — | W34 | — | 0.5 | OEM-2-N | — | — | — |
| 4 | Ignition 8 | — | — | — | — | — | — | — | — |
| 9 | Engine gnd | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
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) | — | W30 | — | 0.5 | MAXXECUGEN2T-MX2-3 | — | — | — |
| F | Brake switch | — | W49 | — | 0.5 | MAXXECUGEN2T-MX1-24 | — | — | — |
| G | Power steering pressure switch | — | W50 | — | 0.5 | MAXXECUGEN2T-MX3-21 | — | — | — |
| I | Condenser fan relay | — | W23 | — | 0.5 | MAXXECUGEN2T-MX1-5 | — | — | — |
| O | Alternator control | — | W31 | — | 0.5 | MAXXECUGEN2T-MX2-33 | — | — | — |
| P | A/C request | — | W51 | — | 0.5 | MAXXECUGEN2T-MX3-26 | — | — | — |
| Q | Charge lamp | — | W32 | — | 0.5 | MAXXECUGEN2T-MX2-34 | — | — | — |
| R | Cooling fan relay | — | W24 | — | 0.5 | MAXXECUGEN2T-MX1-6 | — | — | — |
| S | A/C clutch relay | — | W25 | — | 0.5 | MAXXECUGEN2T-MX1-7 | — | — | — |
| U | Front O2 heater | — | W27 | — | 0.5 | MAXXECUGEN2T-MX2-12 | — | — | — |
| V | Neutral switch | — | W52 | — | 0.5 | MAXXECUGEN2T-MX2-14 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Fuel tank pressure | — | W45 | — | 0.5 | MAXXECUGEN2T-MX2-5 | — | — | — |
| B | Intake air temperature (IAT) | — | W44 | — | 0.5 | MAXXECUGEN2T-MX2-4 | — | — | — |
| C | Front O2 signal | — | W41 | — | 0.5 | MAXXECUGEN2T-MX1-28 | — | — | — |
| D | Vehicle speed | — | W48 | — | 0.5 | MAXXECUGEN2T-MX1-23 | — | — | — |
| E | Coolant temperature (ECT) | — | W43 | — | 0.5 | MAXXECUGEN2T-MX1-30 | — | — | — |
| F | Knock sensor | — | W16 | — | 0.5 | MAXXECUGEN2T-MX2-28 | — | — | — |
| H | Cam position (CMP) | — | W15 | — | 0.5 | MAXXECUGEN2T-MX1-18 | — | — | — |
| I | +5V sensor supply | — | W13 | — | 0.5 | MAXXECUGEN2T-MX1-12 | — | — | — |
| J | Crank position (CKP) | — | W14 | — | 0.5 | MAXXECUGEN2T-MX1-10 | — | — | — |
| K | Tachometer output | — | — | — | — | — | — | — | — |
| L | Mass air flow (MAF) | — | W39 | — | 0.5 | MAXXECUGEN2T-MX1-26 | — | — | — |
| M | EGR valve | — | W33 | — | 0.5 | MAXXECUGEN2T-MX3-29 | — | — | — |
| N | EGR valve | — | W34 | — | 0.5 | MAXXECUGEN2T-MX3-30 | — | — | — |
| O | EGR valve | — | W35 | — | 0.5 | MAXXECUGEN2T-MX2-7 | — | — | — |
| P | EGR valve | — | W36 | — | 0.5 | MAXXECUGEN2T-MX2-8 | — | — | — |
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 | — | — | — |
| C | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Throttle position (TPS) | — | W40 | — | 0.5 | MAXXECUGEN2T-MX1-27 | — | — | — |
| F | Signal ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W17 | — | 0.5 | MAXXECUGEN2T-MX1-1 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W18 | — | 0.5 | MAXXECUGEN2T-MX1-2 | — | — | — |
| I | Clutch switch | — | W53 | — | 0.5 | MAXXECUGEN2T-MX2-15 | — | — | — |
| J | Rear O2 signal | — | W42 | — | 0.5 | MAXXECUGEN2T-MX1-29 | — | — | — |
| K | Fuel level | — | W46 | — | 0.5 | MAXXECUGEN2T-MX2-6 | — | — | — |
| L | Evap purge solenoid | — | W37 | — | 0.5 | MAXXECUGEN2T-MX3-1 | — | — | — |
| M | ISC valve +14V feed | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| N | Fuel pump relay | — | W26 | — | 0.5 | MAXXECUGEN2T-MX1-8 | — | — | — |
| O | ISC valve low side | — | W29 | — | 0.5 | MAXXECUGEN2T-MX1-17 | — | — | — |
| Q | VICS solenoid (intake butterflies) | — | W38 | — | 0.5 | MAXXECUGEN2T-MX3-2 | — | — | — |
| S | EGR boost sensor | — | W47 | — | 0.5 | MAXXECUGEN2T-MX2-13 | — | — | — |
| T | EGR boost solenoid | — | — | — | — | — | — | — | — |
| U | Canister drain cut valve (CDCV) | — | — | — | — | — | — | — | — |
| V | Rear O2 heater | — | W28 | — | 0.5 | MAXXECUGEN2T-MX3-12 | — | — | — |
| W | Injector 1 | — | W19 | — | 0.5 | MAXXECUGEN2T-MX1-31 | — | — | — |
| X | Injector 2 | — | W20 | — | 0.5 | MAXXECUGEN2T-MX1-32 | — | — | — |
| Y | Injector 3 | — | W21 | — | 0.5 | MAXXECUGEN2T-MX1-33 | — | — | — |
| Z | Injector 4 | — | W22 | — | 0.5 | MAXXECUGEN2T-MX1-34 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-3-F | — | — | — |
| 1 | — | — | W12 | — | 0.5 | MAXXECUGEN2T-MX1-14 | — | — | — |
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 | MAXXECUGEN2T-MX1-25 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MAXXECUGEN2T-MX2-25 | — | — | — |
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-3-C | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MAXXECUGEN2T-MX1-9 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MAXXECUGEN2T-MX2-9 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUGEN2T-MX3-9 | — | — | — |
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 | MAXXECUGEN2T-MX1-25 + MAXXECUGEN2T-MX2-25 | 12V supply 1 + 12V supply 2 | power_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | MAXXECUGEN2T-MX2-3 | GP out 6 (GND) | low_side_out | single_source | |
| OEM-1-F | Brake switch | digital_in | MAXXECUGEN2T-MX1-24 | Digital/VR 4 SIGNAL + | digital_in | single_source | |
| OEM-1-G | Power steering pressure switch | digital_in | MAXXECUGEN2T-MX3-21 | Digital/VR 5 SIGNAL + | digital_in | single_source | |
| OEM-1-I | Condenser fan relay | low_side_out | MAXXECUGEN2T-MX1-5 | GP out 1 (GND) | low_side_out | single_source | |
| OEM-1-O | Alternator control | low_side_out | MAXXECUGEN2T-MX2-33 | INJECTOR 5 | injector_out | single_source | |
| OEM-1-P | A/C request | digital_in | MAXXECUGEN2T-MX3-26 | Digital/VR 6 SIGNAL + | digital_in | single_source | |
| OEM-1-Q | Charge lamp | low_side_out | MAXXECUGEN2T-MX2-34 | INJECTOR 6 | injector_out | single_source | |
| OEM-1-R | Cooling fan relay | low_side_out | MAXXECUGEN2T-MX1-6 | GP out 2 (GND) | low_side_out | single_source | |
| OEM-1-S | A/C clutch relay | low_side_out | MAXXECUGEN2T-MX1-7 | GP out 3 (GND) | low_side_out | single_source | |
| OEM-1-U | Front O2 heater | low_side_out | MAXXECUGEN2T-MX2-12 | GP OUT 7 / WBO2 Sensor 1 H- | low_side_out | single_source | |
| OEM-1-V | Neutral switch | digital_in | MAXXECUGEN2T-MX2-14 | AIN 10 | analog_in | single_source | |
| OEM-2-A | Fuel tank pressure | analog_in | MAXXECUGEN2T-MX2-5 | AIN 7 | analog_in | single_source | |
| OEM-2-B | Intake air temperature (IAT) | temp_in | MAXXECUGEN2T-MX2-4 | AIN 6 | analog_in | single_source | |
| OEM-2-C | Front O2 signal | lambda_nb_in | MAXXECUGEN2T-MX1-28 | AIN 3 | analog_in | single_source | |
| OEM-2-D | Vehicle speed | digital_in | MAXXECUGEN2T-MX1-23 | Digital/VR 3 SIGNAL + | digital_in | single_source | |
| OEM-2-E | Coolant temperature (ECT) | temp_in | MAXXECUGEN2T-MX1-30 | AIN 5 | analog_in | single_source | |
| OEM-2-F | Knock sensor | knock_in | MAXXECUGEN2T-MX2-28 | KNOCK 1+ | knock_in | single_source | |
| OEM-2-H | Cam position (CMP) | trigger_in | MAXXECUGEN2T-MX1-18 | Digital/VR 2 SIGNAL + | trigger_in | single_source | |
| OEM-2-I | +5V sensor supply | vref | MAXXECUGEN2T-MX1-12 | Digital/VR 1 POWER SUPPLY | vref | single_source | |
| OEM-2-J | Crank position (CKP) | trigger_in | MAXXECUGEN2T-MX1-10 | Digital/VR 1 SIGNAL + | trigger_in | single_source | |
| OEM-2-K | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-2-L | Mass air flow (MAF) | analog_in | MAXXECUGEN2T-MX1-26 | AIN 1 | analog_in | single_source | |
| OEM-2-M | EGR valve | low_side_out | MAXXECUGEN2T-MX3-29 | INJECTOR 7 | injector_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | MAXXECUGEN2T-MX3-30 | INJECTOR 8 | injector_out | single_source | |
| OEM-2-O | EGR valve | low_side_out | MAXXECUGEN2T-MX2-7 | GP out 13 (H-BRIDGE 1) | hbridge_out | single_source | |
| OEM-2-P | EGR valve | low_side_out | MAXXECUGEN2T-MX2-8 | GP out 14 (H-BRIDGE 1) | hbridge_out | single_source | |
| OEM-3-A | Power ground | ground | MAXXECUGEN2T-MX1-9 + MAXXECUGEN2T-MX2-9 + MAXXECUGEN2T-MX3-9 | Engine gnd + Engine gnd + Engine gnd | ground | single_source | |
| OEM-3-B | Power ground | ground | MAXXECUGEN2T-MX1-9 + MAXXECUGEN2T-MX2-9 + MAXXECUGEN2T-MX3-9 | Engine gnd + Engine gnd + Engine gnd | ground | single_source | |
| OEM-3-C | Power ground | ground | MAXXECUGEN2T-MX1-9 + MAXXECUGEN2T-MX2-9 + MAXXECUGEN2T-MX3-9 | Engine gnd + Engine gnd + Engine gnd | ground | single_source | |
| OEM-3-E | Throttle position (TPS) | analog_in | MAXXECUGEN2T-MX1-27 | AIN 2 | analog_in | single_source | |
| OEM-3-F | Signal ground | sensor_ground | MAXXECUGEN2T-MX1-14 | SENSOR GND | sensor_ground | single_source | |
| OEM-3-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | MAXXECUGEN2T-MX1-1 | Ignition 1 | ignition_out | single_source | |
| OEM-3-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | MAXXECUGEN2T-MX1-2 | Ignition 2 | ignition_out | single_source | |
| OEM-3-I | Clutch switch | digital_in | MAXXECUGEN2T-MX2-15 | AIN 11 | analog_in | single_source | |
| OEM-3-J | Rear O2 signal | lambda_nb_in | MAXXECUGEN2T-MX1-29 | AIN 4 | analog_in | single_source | |
| OEM-3-K | Fuel level | analog_in | MAXXECUGEN2T-MX2-6 | AIN 8 | analog_in | single_source | |
| OEM-3-L | Evap purge solenoid | low_side_out | MAXXECUGEN2T-MX3-1 | GP out 15 (H-BRIDGE 2) | hbridge_out | single_source | |
| OEM-3-M | ISC valve +14V feed | power_in | MAXXECUGEN2T-MX1-25 + MAXXECUGEN2T-MX2-25 | 12V supply 1 + 12V supply 2 | power_in | single_source | |
| OEM-3-N | Fuel pump relay | low_side_out | MAXXECUGEN2T-MX1-8 | GP out 4 (GND) | low_side_out | single_source | |
| OEM-3-O | ISC valve low side | low_side_out | MAXXECUGEN2T-MX1-17 | GP out 5 (GND) | low_side_out | single_source | |
| OEM-3-Q | VICS solenoid (intake butterflies) | low_side_out | MAXXECUGEN2T-MX3-2 | GP out 16 (H-BRIDGE 2) | hbridge_out | single_source | |
| OEM-3-S | EGR boost sensor | analog_in | MAXXECUGEN2T-MX2-13 | AIN 9 | analog_in | single_source | |
| OEM-3-T | EGR boost solenoid | low_side_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 | MAXXECUGEN2T-MX3-12 | GP Out 8 (GND) / WBO2 Sensor 2 H- | low_side_out | single_source | |
| OEM-3-W | Injector 1 | injector_out | MAXXECUGEN2T-MX1-31 | INJECTOR 1 | injector_out | single_source | |
| OEM-3-X | Injector 2 | injector_out | MAXXECUGEN2T-MX1-32 | INJECTOR 2 | injector_out | single_source | |
| OEM-3-Y | Injector 3 | injector_out | MAXXECUGEN2T-MX1-33 | INJECTOR 3 | injector_out | single_source | |
| OEM-3-Z | Injector 4 | injector_out | MAXXECUGEN2T-MX1-34 | INJECTOR 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 | MAXXECUGEN2T-MX1-25 | 0.85 | no route | 12V supply 1 | — | |
| W4 | SP-14V-1 | MAXXECUGEN2T-MX2-25 | 0.85 | no route | 12V supply 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-3-C | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | SP-GND-1 | MAXXECUGEN2T-MX1-9 | 0.85 | no route | Engine gnd | — | |
| W9 | SP-GND-1 | MAXXECUGEN2T-MX2-9 | 0.85 | no route | Engine gnd | — | |
| W10 | SP-GND-1 | MAXXECUGEN2T-MX3-9 | 0.85 | no route | Engine gnd | — | |
| W11 | OEM-3-F | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W12 | SP-0V-1 | MAXXECUGEN2T-MX1-14 | 0.5 | no route | SENSOR GND | — | |
| W13 | OEM-2-I | MAXXECUGEN2T-MX1-12 | 0.5 | no route | +5V sensor supply | — | |
| W14 | OEM-2-J | MAXXECUGEN2T-MX1-10 | 0.5 | no route | Crank position (CKP) | — | |
| W15 | OEM-2-H | MAXXECUGEN2T-MX1-18 | 0.5 | no route | Cam position (CMP) | — | |
| W16 | OEM-2-F | MAXXECUGEN2T-MX2-28 | 0.5 | no route | Knock sensor | — | |
| W17 | OEM-3-G | MAXXECUGEN2T-MX1-1 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W18 | OEM-3-H | MAXXECUGEN2T-MX1-2 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W19 | OEM-3-W | MAXXECUGEN2T-MX1-31 | 0.5 | no route | Injector 1 | — | |
| W20 | OEM-3-X | MAXXECUGEN2T-MX1-32 | 0.5 | no route | Injector 2 | — | |
| W21 | OEM-3-Y | MAXXECUGEN2T-MX1-33 | 0.5 | no route | Injector 3 | — | |
| W22 | OEM-3-Z | MAXXECUGEN2T-MX1-34 | 0.5 | no route | Injector 4 | — | |
| W23 | OEM-1-I | MAXXECUGEN2T-MX1-5 | 0.5 | no route | Condenser fan relay | — | |
| W24 | OEM-1-R | MAXXECUGEN2T-MX1-6 | 0.5 | no route | Cooling fan relay | — | |
| W25 | OEM-1-S | MAXXECUGEN2T-MX1-7 | 0.5 | no route | A/C clutch relay | — | |
| W26 | OEM-3-N | MAXXECUGEN2T-MX1-8 | 0.5 | no route | Fuel pump relay | — | |
| W27 | OEM-1-U | MAXXECUGEN2T-MX2-12 | 0.5 | no route | Front O2 heater | — | |
| W28 | OEM-3-V | MAXXECUGEN2T-MX3-12 | 0.5 | no route | Rear O2 heater | — | |
| W29 | OEM-3-O | MAXXECUGEN2T-MX1-17 | 0.5 | no route | ISC valve low side | — | |
| W30 | OEM-1-E | MAXXECUGEN2T-MX2-3 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W31 | OEM-1-O | MAXXECUGEN2T-MX2-33 | 0.5 | no route | Alternator control | — | |
| W32 | OEM-1-Q | MAXXECUGEN2T-MX2-34 | 0.5 | no route | Charge lamp | — | |
| W33 | OEM-2-M | MAXXECUGEN2T-MX3-29 | 0.5 | no route | EGR valve | — | |
| W34 | OEM-2-N | MAXXECUGEN2T-MX3-30 | 0.5 | no route | EGR valve | — | |
| W35 | OEM-2-O | MAXXECUGEN2T-MX2-7 | 0.5 | no route | EGR valve | — | |
| W36 | OEM-2-P | MAXXECUGEN2T-MX2-8 | 0.5 | no route | EGR valve | — | |
| W37 | OEM-3-L | MAXXECUGEN2T-MX3-1 | 0.5 | no route | Evap purge solenoid | — | |
| W38 | OEM-3-Q | MAXXECUGEN2T-MX3-2 | 0.5 | no route | VICS solenoid (intake butterflies) | — | |
| W39 | OEM-2-L | MAXXECUGEN2T-MX1-26 | 0.5 | no route | Mass air flow (MAF) | — | |
| W40 | OEM-3-E | MAXXECUGEN2T-MX1-27 | 0.5 | no route | Throttle position (TPS) | — | |
| W41 | OEM-2-C | MAXXECUGEN2T-MX1-28 | 0.5 | no route | Front O2 signal | — | |
| W42 | OEM-3-J | MAXXECUGEN2T-MX1-29 | 0.5 | no route | Rear O2 signal | — | |
| W43 | OEM-2-E | MAXXECUGEN2T-MX1-30 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W44 | OEM-2-B | MAXXECUGEN2T-MX2-4 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W45 | OEM-2-A | MAXXECUGEN2T-MX2-5 | 0.5 | no route | Fuel tank pressure | — | |
| W46 | OEM-3-K | MAXXECUGEN2T-MX2-6 | 0.5 | no route | Fuel level | — | |
| W47 | OEM-3-S | MAXXECUGEN2T-MX2-13 | 0.5 | no route | EGR boost sensor | — | |
| W48 | OEM-2-D | MAXXECUGEN2T-MX1-23 | 0.5 | no route | Vehicle speed | — | |
| W49 | OEM-1-F | MAXXECUGEN2T-MX1-24 | 0.5 | no route | Brake switch | — | |
| W50 | OEM-1-G | MAXXECUGEN2T-MX3-21 | 0.5 | no route | Power steering pressure switch | — | |
| W51 | OEM-1-P | MAXXECUGEN2T-MX3-26 | 0.5 | no route | A/C request | — | |
| W52 | OEM-1-V | MAXXECUGEN2T-MX2-14 | 0.5 | no route | Neutral switch | — | |
| W53 | OEM-3-I | MAXXECUGEN2T-MX2-15 | 0.5 | no route | Clutch 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 (13)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-1-V ↔ MAXXECUGEN2T-MX2-14 | OEM-1-V "Neutral switch" [digital_in] is wired to MAXXECUGEN2T-MX2-14 "AIN 10" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-2-O ↔ MAXXECUGEN2T-MX2-7 | OEM-2-O "EGR valve" [low_side_out] is wired to MAXXECUGEN2T-MX2-7 "GP out 13 (H-BRIDGE 1)" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-P ↔ MAXXECUGEN2T-MX2-8 | OEM-2-P "EGR valve" [low_side_out] is wired to MAXXECUGEN2T-MX2-8 "GP out 14 (H-BRIDGE 1)" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-I ↔ MAXXECUGEN2T-MX2-15 | OEM-3-I "Clutch switch" [digital_in] is wired to MAXXECUGEN2T-MX2-15 "AIN 11" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-3-L ↔ MAXXECUGEN2T-MX3-1 | OEM-3-L "Evap purge solenoid" [low_side_out] is wired to MAXXECUGEN2T-MX3-1 "GP out 15 (H-BRIDGE 2)" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-Q ↔ MAXXECUGEN2T-MX3-2 | OEM-3-Q "VICS solenoid (intake butterflies)" [low_side_out] is wired to MAXXECUGEN2T-MX3-2 "GP out 16 (H-BRIDGE 2)" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-1-O ↔ MAXXECUGEN2T-MX2-33 | OEM-1-O "Alternator control" [low_side_out] is wired to MAXXECUGEN2T-MX2-33 "INJECTOR 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-Q ↔ MAXXECUGEN2T-MX2-34 | OEM-1-Q "Charge lamp" [low_side_out] is wired to MAXXECUGEN2T-MX2-34 "INJECTOR 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-B ↔ MAXXECUGEN2T-MX2-4 | OEM-2-B "Intake air temperature (IAT)" [temp_in] is wired to MAXXECUGEN2T-MX2-4 "AIN 6" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-E ↔ MAXXECUGEN2T-MX1-30 | OEM-2-E "Coolant temperature (ECT)" [temp_in] is wired to MAXXECUGEN2T-MX1-30 "AIN 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | NET_FAMILY | OEM-2-M ↔ MAXXECUGEN2T-MX3-29 | OEM-2-M "EGR valve" [low_side_out] is wired to MAXXECUGEN2T-MX3-29 "INJECTOR 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-N ↔ MAXXECUGEN2T-MX3-30 | OEM-2-N "EGR valve" [low_side_out] is wired to MAXXECUGEN2T-MX3-30 "INJECTOR 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 3 optional OEM pins are not mapped: OEM-2-K Tachometer output; OEM-3-T EGR boost solenoid; 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 GEN2 TRACK has no battery-constant input; not needed - OEM-3 T: EGR boost solenoid: no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU GEN2 TRACK - OEM-3 U: Canister drain cut valve (CDCV): no free low_side/ls_hs/injector/hbridge on MaxxECU MaxxECU GEN2 TRACK - OEM-2 K: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MaxxECU MaxxECU GEN2 TRACK - MAXXECUGEN2T-MX2 24: 12V supply 3: 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 MX5NB1X install manual (NB1 1999-00) | https://linkecu.com/documentation/MX5XNB1.pdf |
| 4 | vendor_doc | MaxxECU GEN2 pinout (RACE MX1–MX4 / TRACK MX1–MX3) | http://www.maxxecu.com/webhelp/wirings-maxxecu_gen2_pinout.html |