MX-5 Miata NB1 1999-00 (BP-4W) → MoTeC M800 universal (auto)
MX-5 Miata NB1 1999-00 (BP-4W) — MoTeC — M800
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
M800-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | AUX2 | — | W23 | — | 0.5 | OEM-1-R | — | — | — |
| 2 | 5V Engine Sensor Supply | — | W13 | — | 0.5 | OEM-2-I | — | — | — |
| 3 | IGN1 | — | W16 | — | 0.5 | OEM-3-G | — | — | — |
| 4 | IGN2 | — | W17 | — | 0.5 | OEM-3-H | — | — | — |
| 5 | IGN3 | — | — | — | — | — | — | — | — |
| 6 | IGN4 | — | — | — | — | — | — | — | — |
| 7 | IGN5 | — | — | — | — | — | — | — | — |
| 8 | IGN6 | — | — | — | — | — | — | — | — |
| 9 | 5V Auxiliary Sensor Supply | — | — | — | — | — | — | — | — |
| 10 | GND Battery Negative | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | GND Battery Negative | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | 8V Engine Sensor Supply | — | — | — | — | — | — | — | — |
| 13 | 8V Auxiliary Sensor and CAN Supply | — | — | — | — | — | — | — | — |
| 14 | AV1 | — | W34 | — | 0.5 | OEM-2-L | — | — | — |
| 15 | Analog Voltage Input 2 | — | W35 | — | 0.5 | OEM-3-E | — | — | — |
| 16 | Analog Voltage Input 3 | — | W36 | — | 0.5 | OEM-2-C | — | — | — |
| 17 | Analog Voltage Input 4 | — | W37 | — | 0.5 | OEM-3-J | — | — | — |
| 18 | AUX1 | — | W22 | — | 0.5 | OEM-1-I | — | — | — |
| 19 | INJ1 | — | W18 | — | 0.5 | OEM-3-W | — | — | — |
| 20 | INJ2 | — | W19 | — | 0.5 | OEM-3-X | — | — | — |
| 21 | INJ3 | — | W20 | — | 0.5 | OEM-3-Y | — | — | — |
| 22 | INJ4 | — | W21 | — | 0.5 | OEM-3-Z | — | — | — |
| 23 | AUX3 | — | W24 | — | 0.5 | OEM-1-S | — | — | — |
| 24 | AUX4 | — | W25 | — | 0.5 | OEM-3-N | — | — | — |
| 25 | Analog Voltage Input 5 | — | W40 | — | 0.5 | OEM-2-A | — | — | — |
| 26 | VBAT Battery Positive | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | INJ5 | — | W30 | — | 0.5 | OEM-1-O | — | — | — |
| 28 | INJ6 | — | W31 | — | 0.5 | OEM-1-Q | — | — | — |
| 29 | INJ7 | — | W32 | — | 0.5 | OEM-2-M | — | — | — |
| 30 | INJ8 | — | W33 | — | 0.5 | OEM-2-N | — | — | — |
| 31 | AUX5 | — | W26 | — | 0.5 | OEM-1-U | — | — | — |
| 32 | AUX6 | — | W27 | — | 0.5 | OEM-3-V | — | — | — |
| 33 | AUX7 | — | W28 | — | 0.5 | OEM-3-O | — | — | — |
| 34 | AUX8 | — | W29 | — | 0.5 | OEM-1-E | — | — | — |
M800-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Crank Reference Timing Input | — | W14 | — | 0.5 | OEM-2-J | — | — | — |
| 2 | Cam Sync Timing Input | — | W15 | — | 0.5 | OEM-2-H | — | — | — |
| 3 | Analog Temperature Input 1 | — | W38 | — | 0.5 | OEM-2-E | — | — | — |
| 4 | Analog Temperature Input 2 | — | W39 | — | 0.5 | OEM-2-B | — | — | — |
| 5 | Analog Temperature Input 3 | — | — | — | — | — | — | — | — |
| 6 | Analog Temperature Input 4 | — | — | — | — | — | — | — | — |
| 7 | Analog Temperature Input 5 | — | — | — | — | — | — | — | — |
| 8 | Digital Input 1 | — | W43 | — | 0.5 | OEM-2-D | — | — | — |
| 9 | Digital Input 2 | — | W44 | — | 0.5 | OEM-1-F | — | — | — |
| 10 | Digital Input 3 | — | W45 | — | 0.5 | OEM-1-G | — | — | — |
| 11 | Digital Input 4 | — | W46 | — | 0.5 | OEM-1-P | — | — | — |
| 12 | Lambda2 Sense Voltage | — | — | — | — | — | — | — | — |
| 13 | Lambda2 Pump Current | — | — | — | — | — | — | — | — |
| 14 | 0V Comms Reference | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | 0V Auxiliary Sensor Supply | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | 0V Engine Sensor Supply | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | RS232 Transmit Data | — | — | — | — | — | — | — | — |
| 18 | RS232 Receive Data | — | — | — | — | — | — | — | — |
| 19 | Analog Temperature Input 6 | — | — | — | — | — | — | — | — |
| 20 | Analog Voltage Input 6 | — | W41 | — | 0.5 | OEM-3-K | — | — | — |
| 21 | AV7 | — | W42 | — | 0.5 | OEM-3-S | — | — | — |
| 22 | AV8 | — | W47 | — | 0.5 | OEM-1-V | — | — | — |
| 23 | CAN Bus High | — | — | — | — | — | — | — | — |
| 24 | CAN Bus Low | — | — | — | — | — | — | — | — |
| 25 | Lambda1 Sense Voltage | — | — | — | — | — | — | — | — |
| 26 | Lambda1 Pump Current | — | — | — | — | — | — | — | — |
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 | M800-A-34 | — | — | — |
| F | Brake switch | — | W44 | — | 0.5 | M800-B-9 | — | — | — |
| G | Power steering pressure switch | — | W45 | — | 0.5 | M800-B-10 | — | — | — |
| I | Condenser fan relay | — | W22 | — | 0.5 | M800-A-18 | — | — | — |
| O | Alternator control | — | W30 | — | 0.5 | M800-A-27 | — | — | — |
| P | A/C request | — | W46 | — | 0.5 | M800-B-11 | — | — | — |
| Q | Charge lamp | — | W31 | — | 0.5 | M800-A-28 | — | — | — |
| R | Cooling fan relay | — | W23 | — | 0.5 | M800-A-1 | — | — | — |
| S | A/C clutch relay | — | W24 | — | 0.5 | M800-A-23 | — | — | — |
| U | Front O2 heater | — | W26 | — | 0.5 | M800-A-31 | — | — | — |
| V | Neutral switch | — | W47 | — | 0.5 | M800-B-22 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Fuel tank pressure | — | W40 | — | 0.5 | M800-A-25 | — | — | — |
| B | Intake air temperature (IAT) | — | W39 | — | 0.5 | M800-B-4 | — | — | — |
| C | Front O2 signal | — | W36 | — | 0.5 | M800-A-16 | — | — | — |
| D | Vehicle speed | — | W43 | — | 0.5 | M800-B-8 | — | — | — |
| E | Coolant temperature (ECT) | — | W38 | — | 0.5 | M800-B-3 | — | — | — |
| F | Knock sensor | — | — | — | — | — | — | — | — |
| H | Cam position (CMP) | — | W15 | — | 0.5 | M800-B-2 | — | — | — |
| I | +5V sensor supply | — | W13 | — | 0.5 | M800-A-2 | — | — | — |
| J | Crank position (CKP) | — | W14 | — | 0.5 | M800-B-1 | — | — | — |
| K | Tachometer output | — | — | — | — | — | — | — | — |
| L | Mass air flow (MAF) | — | W34 | — | 0.5 | M800-A-14 | — | — | — |
| M | EGR valve | — | W32 | — | 0.5 | M800-A-29 | — | — | — |
| N | EGR valve | — | W33 | — | 0.5 | M800-A-30 | — | — | — |
| O | EGR valve | — | — | — | — | — | — | — | — |
| P | EGR valve | — | — | — | — | — | — | — | — |
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) | — | W35 | — | 0.5 | M800-A-15 | — | — | — |
| F | Signal ground | — | W9 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W16 | — | 0.5 | M800-A-3 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W17 | — | 0.5 | M800-A-4 | — | — | — |
| I | Clutch switch | — | — | — | — | — | — | — | — |
| J | Rear O2 signal | — | W37 | — | 0.5 | M800-A-17 | — | — | — |
| K | Fuel level | — | W41 | — | 0.5 | M800-B-20 | — | — | — |
| L | Evap purge solenoid | — | — | — | — | — | — | — | — |
| M | ISC valve +14V feed | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| N | Fuel pump relay | — | W25 | — | 0.5 | M800-A-24 | — | — | — |
| O | ISC valve low side | — | W28 | — | 0.5 | M800-A-33 | — | — | — |
| Q | VICS solenoid (intake butterflies) | — | — | — | — | — | — | — | — |
| S | EGR boost sensor | — | W42 | — | 0.5 | M800-B-21 | — | — | — |
| T | EGR boost solenoid | — | — | — | — | — | — | — | — |
| U | Canister drain cut valve (CDCV) | — | — | — | — | — | — | — | — |
| V | Rear O2 heater | — | W27 | — | 0.5 | M800-A-32 | — | — | — |
| W | Injector 1 | — | W18 | — | 0.5 | M800-A-19 | — | — | — |
| X | Injector 2 | — | W19 | — | 0.5 | M800-A-20 | — | — | — |
| Y | Injector 3 | — | W20 | — | 0.5 | M800-A-21 | — | — | — |
| Z | Injector 4 | — | W21 | — | 0.5 | M800-A-22 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W9 | — | 0.5 | OEM-3-F | — | — | — |
| 1 | — | — | W10 | — | 0.5 | M800-B-14 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | M800-B-15 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | M800-B-16 | — | — | — |
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 | M800-A-26 | — | — | — |
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 | M800-A-10 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | M800-A-11 | — | — | — |
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 | M800-A-26 | VBAT Battery Positive | power_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | M800-A-34 | AUX8 | switch_out | single_source | |
| OEM-1-F | Brake switch | digital_in | M800-B-9 | Digital Input 2 | digital_in | single_source | |
| OEM-1-G | Power steering pressure switch | digital_in | M800-B-10 | Digital Input 3 | digital_in | single_source | |
| OEM-1-I | Condenser fan relay | low_side_out | M800-A-18 | AUX1 | switch_out | single_source | |
| OEM-1-O | Alternator control | low_side_out | M800-A-27 | INJ5 | injector_out | single_source | |
| OEM-1-P | A/C request | digital_in | M800-B-11 | Digital Input 4 | digital_in | single_source | |
| OEM-1-Q | Charge lamp | low_side_out | M800-A-28 | INJ6 | injector_out | single_source | |
| OEM-1-R | Cooling fan relay | low_side_out | M800-A-1 | AUX2 | switch_out | single_source | |
| OEM-1-S | A/C clutch relay | low_side_out | M800-A-23 | AUX3 | switch_out | single_source | |
| OEM-1-U | Front O2 heater | low_side_out | M800-A-31 | AUX5 | switch_out | single_source | |
| OEM-1-V | Neutral switch | digital_in | M800-B-22 | AV8 | analog_in | single_source | |
| OEM-2-A | Fuel tank pressure | analog_in | M800-A-25 | Analog Voltage Input 5 | analog_in | single_source | |
| OEM-2-B | Intake air temperature (IAT) | temp_in | M800-B-4 | Analog Temperature Input 2 | temp_in | single_source | |
| OEM-2-C | Front O2 signal | lambda_nb_in | M800-A-16 | Analog Voltage Input 3 | analog_in | single_source | |
| OEM-2-D | Vehicle speed | digital_in | M800-B-8 | Digital Input 1 | digital_in | single_source | |
| OEM-2-E | Coolant temperature (ECT) | temp_in | M800-B-3 | Analog Temperature Input 1 | temp_in | single_source | |
| OEM-2-F | Knock sensor | knock_in | — | — | — | single_source | |
| OEM-2-H | Cam position (CMP) | trigger_in | M800-B-2 | Cam Sync Timing Input | trigger_in | single_source | |
| OEM-2-I | +5V sensor supply | vref | M800-A-2 | 5V Engine Sensor Supply | vref | single_source | |
| OEM-2-J | Crank position (CKP) | trigger_in | M800-B-1 | Crank Reference Timing Input | trigger_in | single_source | |
| OEM-2-K | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-2-L | Mass air flow (MAF) | analog_in | M800-A-14 | AV1 | analog_in | single_source | |
| OEM-2-M | EGR valve | low_side_out | M800-A-29 | INJ7 | injector_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | M800-A-30 | INJ8 | injector_out | single_source | |
| OEM-2-O | EGR valve | low_side_out | — | — | — | single_source | |
| OEM-2-P | EGR valve | low_side_out | — | — | — | single_source | |
| OEM-3-A | Power ground | ground | M800-A-10 + M800-A-11 | GND Battery Negative + GND Battery Negative | ground | single_source | |
| OEM-3-B | Power ground | ground | M800-A-10 + M800-A-11 | GND Battery Negative + GND Battery Negative | ground | single_source | |
| OEM-3-C | Power ground | ground | M800-A-10 + M800-A-11 | GND Battery Negative + GND Battery Negative | ground | single_source | |
| OEM-3-E | Throttle position (TPS) | analog_in | M800-A-15 | Analog Voltage Input 2 | analog_in | single_source | |
| OEM-3-F | Signal ground | sensor_ground | M800-B-14 + M800-B-15 + M800-B-16 | 0V Comms Reference + 0V Auxiliary Sensor Supply + 0V Engine Sensor Supply | sensor_ground | single_source | |
| OEM-3-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | M800-A-3 | IGN1 | ignition_out | single_source | |
| OEM-3-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | M800-A-4 | IGN2 | ignition_out | single_source | |
| OEM-3-I | Clutch switch | digital_in | — | — | — | single_source | |
| OEM-3-J | Rear O2 signal | lambda_nb_in | M800-A-17 | Analog Voltage Input 4 | analog_in | single_source | |
| OEM-3-K | Fuel level | analog_in | M800-B-20 | Analog Voltage Input 6 | analog_in | single_source | |
| OEM-3-L | Evap purge solenoid | low_side_out | — | — | — | single_source | |
| OEM-3-M | ISC valve +14V feed | power_in | M800-A-26 | VBAT Battery Positive | power_in | single_source | |
| OEM-3-N | Fuel pump relay | low_side_out | M800-A-24 | AUX4 | switch_out | single_source | |
| OEM-3-O | ISC valve low side | low_side_out | M800-A-33 | AUX7 | switch_out | single_source | |
| OEM-3-Q | VICS solenoid (intake butterflies) | low_side_out | — | — | — | single_source | |
| OEM-3-S | EGR boost sensor | analog_in | M800-B-21 | AV7 | 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 | M800-A-32 | AUX6 | switch_out | single_source | |
| OEM-3-W | Injector 1 | injector_out | M800-A-19 | INJ1 | injector_out | single_source | |
| OEM-3-X | Injector 2 | injector_out | M800-A-20 | INJ2 | injector_out | single_source | |
| OEM-3-Y | Injector 3 | injector_out | M800-A-21 | INJ3 | injector_out | single_source | |
| OEM-3-Z | Injector 4 | injector_out | M800-A-22 | INJ4 | 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 | M800-A-26 | 0.85 | no route | VBAT Battery Positive | — | |
| 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 | M800-A-10 | 0.85 | no route | GND Battery Negative | — | |
| W8 | SP-GND-1 | M800-A-11 | 0.85 | no route | GND Battery Negative | — | |
| W9 | OEM-3-F | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W10 | SP-0V-1 | M800-B-14 | 0.5 | no route | 0V Comms Reference | — | |
| W11 | SP-0V-1 | M800-B-15 | 0.5 | no route | 0V Auxiliary Sensor Supply | — | |
| W12 | SP-0V-1 | M800-B-16 | 0.5 | no route | 0V Engine Sensor Supply | — | |
| W13 | OEM-2-I | M800-A-2 | 0.5 | no route | +5V sensor supply | — | |
| W14 | OEM-2-J | M800-B-1 | 0.5 | no route | Crank position (CKP) | — | |
| W15 | OEM-2-H | M800-B-2 | 0.5 | no route | Cam position (CMP) | — | |
| W16 | OEM-3-G | M800-A-3 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W17 | OEM-3-H | M800-A-4 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W18 | OEM-3-W | M800-A-19 | 0.5 | no route | Injector 1 | — | |
| W19 | OEM-3-X | M800-A-20 | 0.5 | no route | Injector 2 | — | |
| W20 | OEM-3-Y | M800-A-21 | 0.5 | no route | Injector 3 | — | |
| W21 | OEM-3-Z | M800-A-22 | 0.5 | no route | Injector 4 | — | |
| W22 | OEM-1-I | M800-A-18 | 0.5 | no route | Condenser fan relay | — | |
| W23 | OEM-1-R | M800-A-1 | 0.5 | no route | Cooling fan relay | — | |
| W24 | OEM-1-S | M800-A-23 | 0.5 | no route | A/C clutch relay | — | |
| W25 | OEM-3-N | M800-A-24 | 0.5 | no route | Fuel pump relay | — | |
| W26 | OEM-1-U | M800-A-31 | 0.5 | no route | Front O2 heater | — | |
| W27 | OEM-3-V | M800-A-32 | 0.5 | no route | Rear O2 heater | — | |
| W28 | OEM-3-O | M800-A-33 | 0.5 | no route | ISC valve low side | — | |
| W29 | OEM-1-E | M800-A-34 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W30 | OEM-1-O | M800-A-27 | 0.5 | no route | Alternator control | — | |
| W31 | OEM-1-Q | M800-A-28 | 0.5 | no route | Charge lamp | — | |
| W32 | OEM-2-M | M800-A-29 | 0.5 | no route | EGR valve | — | |
| W33 | OEM-2-N | M800-A-30 | 0.5 | no route | EGR valve | — | |
| W34 | OEM-2-L | M800-A-14 | 0.5 | no route | Mass air flow (MAF) | — | |
| W35 | OEM-3-E | M800-A-15 | 0.5 | no route | Throttle position (TPS) | — | |
| W36 | OEM-2-C | M800-A-16 | 0.5 | no route | Front O2 signal | — | |
| W37 | OEM-3-J | M800-A-17 | 0.5 | no route | Rear O2 signal | — | |
| W38 | OEM-2-E | M800-B-3 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W39 | OEM-2-B | M800-B-4 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W40 | OEM-2-A | M800-A-25 | 0.5 | no route | Fuel tank pressure | — | |
| W41 | OEM-3-K | M800-B-20 | 0.5 | no route | Fuel level | — | |
| W42 | OEM-3-S | M800-B-21 | 0.5 | no route | EGR boost sensor | — | |
| W43 | OEM-2-D | M800-B-8 | 0.5 | no route | Vehicle speed | — | |
| W44 | OEM-1-F | M800-B-9 | 0.5 | no route | Brake switch | — | |
| W45 | OEM-1-G | M800-B-10 | 0.5 | no route | Power steering pressure switch | — | |
| W46 | OEM-1-P | M800-B-11 | 0.5 | no route | A/C request | — | |
| W47 | OEM-1-V | M800-B-22 | 0.5 | no route | Neutral switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | M800-A-PLUG | MoTeC | M800 connector A plug (count inferred) | 1.000 | ea |
| connector | M800-B-PLUG | MoTeC | M800 connector B plug (count inferred) | 1.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (19)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | M800-A-1 | M800-A-1 "AUX2" drives OEM-1-R Cooling fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | M800-A-18 | M800-A-18 "AUX1" drives OEM-1-I Condenser fan relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | M800-A-23 | M800-A-23 "AUX3" 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 | M800-A-24 | M800-A-24 "AUX4" drives OEM-3-N Fuel pump relay (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | M800-A-33 | M800-A-33 "AUX7" drives OEM-3-O ISC valve low side (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-1-V ↔ M800-B-22 | OEM-1-V "Neutral switch" [digital_in] is wired to M800-B-22 "AV8" [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. |
| info | NET_FAMILY | OEM-1-E ↔ M800-A-34 | OEM-1-E "Malfunction indicator lamp (MIL)" [low_side_out] is wired to M800-A-34 "AUX8" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-1-I ↔ M800-A-18 | OEM-1-I "Condenser fan relay" [low_side_out] is wired to M800-A-18 "AUX1" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-1-O ↔ M800-A-27 | OEM-1-O "Alternator control" [low_side_out] is wired to M800-A-27 "INJ5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-Q ↔ M800-A-28 | OEM-1-Q "Charge lamp" [low_side_out] is wired to M800-A-28 "INJ6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-R ↔ M800-A-1 | OEM-1-R "Cooling fan relay" [low_side_out] is wired to M800-A-1 "AUX2" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-1-S ↔ M800-A-23 | OEM-1-S "A/C clutch relay" [low_side_out] is wired to M800-A-23 "AUX3" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-1-U ↔ M800-A-31 | OEM-1-U "Front O2 heater" [low_side_out] is wired to M800-A-31 "AUX5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-2-M ↔ M800-A-29 | OEM-2-M "EGR valve" [low_side_out] is wired to M800-A-29 "INJ7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-N ↔ M800-A-30 | OEM-2-N "EGR valve" [low_side_out] is wired to M800-A-30 "INJ8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-N ↔ M800-A-24 | OEM-3-N "Fuel pump relay" [low_side_out] is wired to M800-A-24 "AUX4" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-3-O ↔ M800-A-33 | OEM-3-O "ISC valve low side" [low_side_out] is wired to M800-A-33 "AUX7" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-3-V ↔ M800-A-32 | OEM-3-V "Rear O2 heater" [low_side_out] is wired to M800-A-32 "AUX6" [switch_out]. Configure this output as low side. |
| info | UNMAPPED | OEM | 9 optional OEM pins are not mapped: OEM-2-F Knock sensor; OEM-2-K Tachometer output; OEM-2-O EGR valve; OEM-2-P EGR valve; OEM-3-I Clutch switch; OEM-3-L Evap purge solenoid; OEM-3-Q VICS solenoid (intake butterflies); 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: MoTeC M800 has no battery-constant input; not needed - OEM-2 F: Knock sensor: no free knock input on MoTeC M800 - OEM-2 O: EGR valve: no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-2 P: EGR valve: no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-3 L: Evap purge solenoid: no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-3 Q: VICS solenoid (intake butterflies): no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-3 T: EGR boost solenoid: no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-3 U: Canister drain cut valve (CDCV): no free low_side/ls_hs/injector/hbridge on MoTeC M800 - OEM-2 K: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MoTeC M800 - OEM-3 I: Clutch switch: no free switch_in/frequency_in/analog_0_5 on MoTeC M800
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 | MoTeC M400/M600/M800/M880 Manual — Appendix L: Pin list by Function | https://starracecars.com/wp-content/uploads/resources/M400_M600_M800_M880_Manual_A5.pdf |
| 4 | vendor_doc | MoTeC M800 OEM WRX56 Installation | https://motec.com.au |