MX-5 Miata NB1 1999-00 (BP-4W) → AMP EFI MS3Pro EVO+ HC (auto)
MX-5 Miata NB1 1999-00 (BP-4W) — AMP EFI — MS3Pro EVO+ HC
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MS3PROEVOHC-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | High current out 1 | — | W39 | — | 0.5 | OEM-1-O | — | — | — |
| 10 | MAT in | — | W54 | — | 0.5 | OEM-2-E | — | — | — |
| 11 | CLT in | — | W55 | — | 0.5 | OEM-2-B | — | — | — |
| 12 | Analog In 6 | — | — | — | — | — | — | — | — |
| 13 | Logic Ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W32 | — | 0.5 | OEM-1-R | — | — | — |
| 15 | CKP− | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 17 | Analog In 7 | — | — | — | — | — | — | — | — |
| 18 | Sensor return | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Analog in 1 | — | W50 | — | 0.5 | OEM-2-L | — | — | — |
| 2 | High current out 2 | — | W40 | — | 0.5 | OEM-1-Q | — | — | — |
| 20 | Analog in 2 | — | W53 | — | 0.5 | OEM-3-J | — | — | — |
| 21 | Analog in 3 | — | W56 | — | 0.5 | OEM-2-A | — | — | — |
| 22 | Analog In 4 | — | W57 | — | 0.5 | OEM-3-K | — | — | — |
| 23 | Analog In 5 | — | W58 | — | 0.5 | OEM-3-S | — | — | — |
| 24 | Tach out | — | W49 | — | 0.5 | OEM-2-K | — | — | — |
| 25 | O2 in | — | W52 | — | 0.5 | OEM-2-C | — | — | — |
| 26 | CMP+ | — | W22 | — | 0.5 | OEM-2-H | — | — | — |
| 27 | CMP− | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Fuel pump relay out | — | W31 | — | 0.5 | OEM-1-I | — | — | — |
| 29 | PWM out 2 | — | W34 | — | 0.5 | OEM-3-N | — | — | — |
| 3 | Injector out J | — | W27 | — | 0.5 | OEM-3-W | — | — | — |
| 30 | PWM out 3 | — | W36 | — | 0.5 | OEM-3-V | — | — | — |
| 31 | Knock in 1 | — | W24 | — | 0.5 | OEM-2-F | — | — | — |
| 32 | Digital switched in 1 | — | W60 | — | 0.5 | OEM-1-F | — | — | — |
| 33 | CAN L | — | — | — | — | — | — | — | — |
| 34 | CAN H | — | — | — | — | — | — | — | — |
| 35 | 12V+ switched power in | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Injector out I | — | W28 | — | 0.5 | OEM-3-X | — | — | — |
| 5 | High current out 3 | — | W41 | — | 0.5 | OEM-2-M | — | — | — |
| 6 | CKP+ | — | W20 | — | 0.5 | OEM-2-J | — | — | — |
| 7 | Knock In 2 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out | — | W19 | — | 0.5 | OEM-2-I | — | — | — |
| 9 | TPS in | — | W51 | — | 0.5 | OEM-3-E | — | — | — |
MS3PROEVOHC-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | W29 | — | 0.5 | OEM-3-Y | — | — | — |
| 10 | Injector out F | — | W30 | — | 0.5 | OEM-3-Z | — | — | — |
| 11 | Injector out G | — | W42 | — | 0.5 | OEM-2-N | — | — | — |
| 12 | Injector out H | — | W43 | — | 0.5 | OEM-2-O | — | — | — |
| 13 | Spark out G | — | W25 | — | 0.5 | OEM-3-G | — | — | — |
| 14 | Spark out E | — | W26 | — | 0.5 | OEM-3-H | — | — | — |
| 15 | Spark out C | — | — | — | — | — | — | — | — |
| 16 | Spark out H | — | — | — | — | — | — | — | — |
| 17 | Digital frequency in 2 (Hall) | — | — | — | — | — | — | — | — |
| 18 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 19 | Digital switched 12V in | — | — | — | — | — | — | — | — |
| 2 | Injector out B | — | W44 | — | 0.5 | OEM-2-P | — | — | — |
| 20 | Digital switched in 2 | — | W61 | — | 0.5 | OEM-1-G | — | — | — |
| 21 | Digital frequency in 3 (unconditioned) | — | — | — | — | — | — | — | — |
| 22 | Digital Frequency in 3 (VR+) | — | — | — | — | — | — | — | — |
| 23 | Digital Frequency In 3 (VR−) | — | — | — | — | — | — | — | — |
| 24 | Spark out F | — | — | — | — | — | — | — | — |
| 25 | Spark out B | — | — | — | — | — | — | — | — |
| 26 | Spark out D | — | — | — | — | — | — | — | — |
| 27 | Spark out A | — | — | — | — | — | — | — | — |
| 28 | Digital frequency in 1 (unconditioned) | — | W59 | — | 0.5 | OEM-2-D | — | — | — |
| 29 | Digital switched in 3 | — | W62 | — | 0.5 | OEM-1-P | — | — | — |
| 3 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Stepper IAC out 1B | — | W48 | — | 0.5 | OEM-3-U | — | — | — |
| 31 | Stepper IAC out 1A | — | — | — | — | — | — | — | — |
| 32 | Stepper IAC out 2A | — | — | — | — | — | — | — | — |
| 33 | Stepper IAC out 2B | — | — | — | — | — | — | — | — |
| 34 | Digital Frequency in 1 (VR+) | — | — | — | — | — | — | — | — |
| 35 | Digital Frequency in 1 (VR−) | — | — | — | — | — | — | — | — |
| 4 | Injector out C | — | W45 | — | 0.5 | OEM-3-L | — | — | — |
| 5 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | W46 | — | 0.5 | OEM-3-Q | — | — | — |
| 7 | Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | W47 | — | 0.5 | OEM-3-T | — | — | — |
| 9 | Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
MS3PROEVOHC-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM out 5 | — | W38 | — | 0.5 | OEM-1-E | — | — | — |
| 10 | Digital switched in 5 | — | W64 | — | 0.5 | OEM-3-I | — | — | — |
| 11 | Digital switched in 4 | — | W63 | — | 0.5 | OEM-1-V | — | — | — |
| 12 | Digital I/O 5 | — | — | — | — | — | — | — | — |
| 13 | Digital I/O 3 | — | — | — | — | — | — | — | — |
| 14 | Digital I/O 1 | — | — | — | — | — | — | — | — |
| 15 | 5V+ VREF out 2 | — | — | — | — | — | — | — | — |
| 17 | Sensor return | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Sensor return | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor return | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | PWM out 4 | — | W37 | — | 0.5 | OEM-3-O | — | — | — |
| 20 | Sensor return | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Sensor return | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | 5V+ VREF out 1 | — | — | — | — | — | — | — | — |
| 3 | Digital out 2 | — | W35 | — | 0.5 | OEM-1-U | — | — | — |
| 4 | Digital out 1 | — | W33 | — | 0.5 | OEM-1-S | — | — | — |
| 5 | Digital I/O 4 | — | — | — | — | — | — | — | — |
| 6 | Digital I/O 2 | — | — | — | — | — | — | — | — |
| 7 | Analog in 8 | — | — | — | — | — | — | — | — |
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) | — | W38 | — | 0.5 | MS3PROEVOHC-C-1 | — | — | — |
| F | Brake switch | — | W60 | — | 0.5 | MS3PROEVOHC-A-32 | — | — | — |
| G | Power steering pressure switch | — | W61 | — | 0.5 | MS3PROEVOHC-B-20 | — | — | — |
| I | Condenser fan relay | — | W31 | — | 0.5 | MS3PROEVOHC-A-28 | — | — | — |
| O | Alternator control | — | W39 | — | 0.5 | MS3PROEVOHC-A-1 | — | — | — |
| P | A/C request | — | W62 | — | 0.5 | MS3PROEVOHC-B-29 | — | — | — |
| Q | Charge lamp | — | W40 | — | 0.5 | MS3PROEVOHC-A-2 | — | — | — |
| R | Cooling fan relay | — | W32 | — | 0.5 | MS3PROEVOHC-A-14 | — | — | — |
| S | A/C clutch relay | — | W33 | — | 0.5 | MS3PROEVOHC-C-4 | — | — | — |
| U | Front O2 heater | — | W35 | — | 0.5 | MS3PROEVOHC-C-3 | — | — | — |
| V | Neutral switch | — | W63 | — | 0.5 | MS3PROEVOHC-C-11 | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Fuel tank pressure | — | W56 | — | 0.5 | MS3PROEVOHC-A-21 | — | — | — |
| B | Intake air temperature (IAT) | — | W55 | — | 0.5 | MS3PROEVOHC-A-11 | — | — | — |
| C | Front O2 signal | — | W52 | — | 0.5 | MS3PROEVOHC-A-25 | — | — | — |
| D | Vehicle speed | — | W59 | — | 0.5 | MS3PROEVOHC-B-28 | — | — | — |
| E | Coolant temperature (ECT) | — | W54 | — | 0.5 | MS3PROEVOHC-A-10 | — | — | — |
| F | Knock sensor | — | W24 | — | 0.5 | MS3PROEVOHC-A-31 | — | — | — |
| H | Cam position (CMP) | — | W22 | — | 0.5 | MS3PROEVOHC-A-26 | — | — | — |
| I | +5V sensor supply | — | W19 | — | 0.5 | MS3PROEVOHC-A-8 | — | — | — |
| J | Crank position (CKP) | — | W20 | — | 0.5 | MS3PROEVOHC-A-6 | — | — | — |
| K | Tachometer output | — | W49 | — | 0.5 | MS3PROEVOHC-A-24 | — | — | — |
| L | Mass air flow (MAF) | — | W50 | — | 0.5 | MS3PROEVOHC-A-19 | — | — | — |
| M | EGR valve | — | W41 | — | 0.5 | MS3PROEVOHC-A-5 | — | — | — |
| N | EGR valve | — | W42 | — | 0.5 | MS3PROEVOHC-B-11 | — | — | — |
| O | EGR valve | — | W43 | — | 0.5 | MS3PROEVOHC-B-12 | — | — | — |
| P | EGR valve | — | W44 | — | 0.5 | MS3PROEVOHC-B-2 | — | — | — |
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) | — | W51 | — | 0.5 | MS3PROEVOHC-A-9 | — | — | — |
| F | Signal ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| G | Ignition 1 (coils 1+4, wasted spark) | — | W25 | — | 0.5 | MS3PROEVOHC-B-13 | — | — | — |
| H | Ignition 2 (coils 2+3, wasted spark) | — | W26 | — | 0.5 | MS3PROEVOHC-B-14 | — | — | — |
| I | Clutch switch | — | W64 | — | 0.5 | MS3PROEVOHC-C-10 | — | — | — |
| J | Rear O2 signal | — | W53 | — | 0.5 | MS3PROEVOHC-A-20 | — | — | — |
| K | Fuel level | — | W57 | — | 0.5 | MS3PROEVOHC-A-22 | — | — | — |
| L | Evap purge solenoid | — | W45 | — | 0.5 | MS3PROEVOHC-B-4 | — | — | — |
| M | ISC valve +14V feed | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| N | Fuel pump relay | — | W34 | — | 0.5 | MS3PROEVOHC-A-29 | — | — | — |
| O | ISC valve low side | — | W37 | — | 0.5 | MS3PROEVOHC-C-2 | — | — | — |
| Q | VICS solenoid (intake butterflies) | — | W46 | — | 0.5 | MS3PROEVOHC-B-6 | — | — | — |
| S | EGR boost sensor | — | W58 | — | 0.5 | MS3PROEVOHC-A-23 | — | — | — |
| T | EGR boost solenoid | — | W47 | — | 0.5 | MS3PROEVOHC-B-8 | — | — | — |
| U | Canister drain cut valve (CDCV) | — | W48 | — | 0.5 | MS3PROEVOHC-B-30 | — | — | — |
| V | Rear O2 heater | — | W36 | — | 0.5 | MS3PROEVOHC-A-30 | — | — | — |
| W | Injector 1 | — | W27 | — | 0.5 | MS3PROEVOHC-A-3 | — | — | — |
| X | Injector 2 | — | W28 | — | 0.5 | MS3PROEVOHC-A-4 | — | — | — |
| Y | Injector 3 | — | W29 | — | 0.5 | MS3PROEVOHC-B-1 | — | — | — |
| Z | Injector 4 | — | W30 | — | 0.5 | MS3PROEVOHC-B-10 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-3-F | — | — | — |
| 1 | — | — | W12 | — | 0.5 | MS3PROEVOHC-A-13 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | MS3PROEVOHC-A-18 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MS3PROEVOHC-C-17 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | MS3PROEVOHC-C-18 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MS3PROEVOHC-C-19 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MS3PROEVOHC-C-20 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MS3PROEVOHC-C-21 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | MS3PROEVOHC-A-15 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | MS3PROEVOHC-A-27 | — | — | — |
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 | MS3PROEVOHC-A-35 | — | — | — |
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 | MS3PROEVOHC-B-3 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MS3PROEVOHC-B-5 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROEVOHC-B-7 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MS3PROEVOHC-B-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 | MS3PROEVOHC-A-35 | 12V+ switched power in | power_in | single_source | |
| OEM-1-E | Malfunction indicator lamp (MIL) | low_side_out | MS3PROEVOHC-C-1 | PWM out 5 | low_side_out | single_source | |
| OEM-1-F | Brake switch | digital_in | MS3PROEVOHC-A-32 | Digital switched in 1 | digital_in | single_source | |
| OEM-1-G | Power steering pressure switch | digital_in | MS3PROEVOHC-B-20 | Digital switched in 2 | digital_in | single_source | |
| OEM-1-I | Condenser fan relay | low_side_out | MS3PROEVOHC-A-28 | Fuel pump relay out | low_side_out | single_source | |
| OEM-1-O | Alternator control | low_side_out | MS3PROEVOHC-A-1 | High current out 1 | low_side_out | single_source | |
| OEM-1-P | A/C request | digital_in | MS3PROEVOHC-B-29 | Digital switched in 3 | digital_in | single_source | |
| OEM-1-Q | Charge lamp | low_side_out | MS3PROEVOHC-A-2 | High current out 2 | low_side_out | single_source | |
| OEM-1-R | Cooling fan relay | low_side_out | MS3PROEVOHC-A-14 | PWM / Idle Out 1 | low_side_out | single_source | |
| OEM-1-S | A/C clutch relay | low_side_out | MS3PROEVOHC-C-4 | Digital out 1 | low_side_out | single_source | |
| OEM-1-U | Front O2 heater | low_side_out | MS3PROEVOHC-C-3 | Digital out 2 | low_side_out | single_source | |
| OEM-1-V | Neutral switch | digital_in | MS3PROEVOHC-C-11 | Digital switched in 4 | digital_in | single_source | |
| OEM-2-A | Fuel tank pressure | analog_in | MS3PROEVOHC-A-21 | Analog in 3 | analog_in | single_source | |
| OEM-2-B | Intake air temperature (IAT) | temp_in | MS3PROEVOHC-A-11 | CLT in | temp_in | single_source | |
| OEM-2-C | Front O2 signal | lambda_nb_in | MS3PROEVOHC-A-25 | O2 in | lambda_nb_in | single_source | |
| OEM-2-D | Vehicle speed | digital_in | MS3PROEVOHC-B-28 | Digital frequency in 1 (unconditioned) | digital_in | single_source | |
| OEM-2-E | Coolant temperature (ECT) | temp_in | MS3PROEVOHC-A-10 | MAT in | temp_in | single_source | |
| OEM-2-F | Knock sensor | knock_in | MS3PROEVOHC-A-31 | Knock in 1 | knock_in | single_source | |
| OEM-2-H | Cam position (CMP) | trigger_in | MS3PROEVOHC-A-26 | CMP+ | trigger_in | single_source | |
| OEM-2-I | +5V sensor supply | vref | MS3PROEVOHC-A-8 | 5V+ VREF out | vref | single_source | |
| OEM-2-J | Crank position (CKP) | trigger_in | MS3PROEVOHC-A-6 | CKP+ | trigger_in | single_source | |
| OEM-2-K | Tachometer output | tacho_out | MS3PROEVOHC-A-24 | Tach out | tacho_out | single_source | |
| OEM-2-L | Mass air flow (MAF) | analog_in | MS3PROEVOHC-A-19 | Analog in 1 | analog_in | single_source | |
| OEM-2-M | EGR valve | low_side_out | MS3PROEVOHC-A-5 | High current out 3 | low_side_out | single_source | |
| OEM-2-N | EGR valve | low_side_out | MS3PROEVOHC-B-11 | Injector out G | injector_out | single_source | |
| OEM-2-O | EGR valve | low_side_out | MS3PROEVOHC-B-12 | Injector out H | injector_out | single_source | |
| OEM-2-P | EGR valve | low_side_out | MS3PROEVOHC-B-2 | Injector out B | injector_out | single_source | |
| OEM-3-A | Power ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-3-B | Power ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-3-C | Power ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-3-E | Throttle position (TPS) | analog_in | MS3PROEVOHC-A-9 | TPS in | analog_in | single_source | |
| OEM-3-F | Signal ground | sensor_ground | MS3PROEVOHC-A-13 + MS3PROEVOHC-A-15 + MS3PROEVOHC-A-18 + MS3PROEVOHC-A-27 + MS3PROEVOHC-C-17 + MS3PROEVOHC-C-18 + MS3PROEVOHC-C-19 + MS3PROEVOHC-C-20 + MS3PROEVOHC-C-21 | Logic Ground + CKP− + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | single_source | |
| OEM-3-G | Ignition 1 (coils 1+4, wasted spark) | ignition_out | MS3PROEVOHC-B-13 | Spark out G | ignition_out | single_source | |
| OEM-3-H | Ignition 2 (coils 2+3, wasted spark) | ignition_out | MS3PROEVOHC-B-14 | Spark out E | ignition_out | single_source | |
| OEM-3-I | Clutch switch | digital_in | MS3PROEVOHC-C-10 | Digital switched in 5 | digital_in | single_source | |
| OEM-3-J | Rear O2 signal | lambda_nb_in | MS3PROEVOHC-A-20 | Analog in 2 | analog_in | single_source | |
| OEM-3-K | Fuel level | analog_in | MS3PROEVOHC-A-22 | Analog In 4 | analog_in | single_source | |
| OEM-3-L | Evap purge solenoid | low_side_out | MS3PROEVOHC-B-4 | Injector out C | injector_out | single_source | |
| OEM-3-M | ISC valve +14V feed | power_in | MS3PROEVOHC-A-35 | 12V+ switched power in | power_in | single_source | |
| OEM-3-N | Fuel pump relay | low_side_out | MS3PROEVOHC-A-29 | PWM out 2 | low_side_out | single_source | |
| OEM-3-O | ISC valve low side | low_side_out | MS3PROEVOHC-C-2 | PWM out 4 | low_side_out | single_source | |
| OEM-3-Q | VICS solenoid (intake butterflies) | low_side_out | MS3PROEVOHC-B-6 | Injector out D | injector_out | single_source | |
| OEM-3-S | EGR boost sensor | analog_in | MS3PROEVOHC-A-23 | Analog In 5 | analog_in | single_source | |
| OEM-3-T | EGR boost solenoid | low_side_out | MS3PROEVOHC-B-8 | Injector out E | injector_out | single_source | |
| OEM-3-U | Canister drain cut valve (CDCV) | low_side_out | MS3PROEVOHC-B-30 | Stepper IAC out 1B | hbridge_out | single_source | |
| OEM-3-V | Rear O2 heater | low_side_out | MS3PROEVOHC-A-30 | PWM out 3 | low_side_out | single_source | |
| OEM-3-W | Injector 1 | injector_out | MS3PROEVOHC-A-3 | Injector out J | injector_out | single_source | |
| OEM-3-X | Injector 2 | injector_out | MS3PROEVOHC-A-4 | Injector out I | injector_out | single_source | |
| OEM-3-Y | Injector 3 | injector_out | MS3PROEVOHC-B-1 | Injector out A | injector_out | single_source | |
| OEM-3-Z | Injector 4 | injector_out | MS3PROEVOHC-B-10 | Injector out F | 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 | MS3PROEVOHC-A-35 | 0.85 | no route | 12V+ switched power in | — | |
| 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 | MS3PROEVOHC-B-3 | 0.85 | no route | Ground | — | |
| W8 | SP-GND-1 | MS3PROEVOHC-B-5 | 0.85 | no route | Ground | — | |
| W9 | SP-GND-1 | MS3PROEVOHC-B-7 | 0.85 | no route | Ground | — | |
| W10 | SP-GND-1 | MS3PROEVOHC-B-9 | 0.85 | no route | Ground | — | |
| W11 | OEM-3-F | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W12 | SP-0V-1 | MS3PROEVOHC-A-13 | 0.5 | no route | Logic Ground | — | |
| W13 | SP-0V-1 | MS3PROEVOHC-A-18 | 0.5 | no route | Sensor return | — | |
| W14 | SP-0V-1 | MS3PROEVOHC-C-17 | 0.5 | no route | Sensor return | — | |
| W15 | SP-0V-1 | MS3PROEVOHC-C-18 | 0.5 | no route | Sensor return | — | |
| W16 | SP-0V-1 | MS3PROEVOHC-C-19 | 0.5 | no route | Sensor return | — | |
| W17 | SP-0V-1 | MS3PROEVOHC-C-20 | 0.5 | no route | Sensor return | — | |
| W18 | SP-0V-1 | MS3PROEVOHC-C-21 | 0.5 | no route | Sensor return | — | |
| W19 | OEM-2-I | MS3PROEVOHC-A-8 | 0.5 | no route | +5V sensor supply | — | |
| W20 | OEM-2-J | MS3PROEVOHC-A-6 | 0.5 | no route | Crank position (CKP) | — | |
| W21 | SP-0V-1 | MS3PROEVOHC-A-15 | 0.5 | no route | CKP− | — | |
| W22 | OEM-2-H | MS3PROEVOHC-A-26 | 0.5 | no route | Cam position (CMP) | — | |
| W23 | SP-0V-1 | MS3PROEVOHC-A-27 | 0.5 | no route | CMP− | — | |
| W24 | OEM-2-F | MS3PROEVOHC-A-31 | 0.5 | no route | Knock sensor | — | |
| W25 | OEM-3-G | MS3PROEVOHC-B-13 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W26 | OEM-3-H | MS3PROEVOHC-B-14 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W27 | OEM-3-W | MS3PROEVOHC-A-3 | 0.5 | no route | Injector 1 | — | |
| W28 | OEM-3-X | MS3PROEVOHC-A-4 | 0.5 | no route | Injector 2 | — | |
| W29 | OEM-3-Y | MS3PROEVOHC-B-1 | 0.5 | no route | Injector 3 | — | |
| W30 | OEM-3-Z | MS3PROEVOHC-B-10 | 0.5 | no route | Injector 4 | — | |
| W31 | OEM-1-I | MS3PROEVOHC-A-28 | 0.5 | no route | Condenser fan relay | — | |
| W32 | OEM-1-R | MS3PROEVOHC-A-14 | 0.5 | no route | Cooling fan relay | — | |
| W33 | OEM-1-S | MS3PROEVOHC-C-4 | 0.5 | no route | A/C clutch relay | — | |
| W34 | OEM-3-N | MS3PROEVOHC-A-29 | 0.5 | no route | Fuel pump relay | — | |
| W35 | OEM-1-U | MS3PROEVOHC-C-3 | 0.5 | no route | Front O2 heater | — | |
| W36 | OEM-3-V | MS3PROEVOHC-A-30 | 0.5 | no route | Rear O2 heater | — | |
| W37 | OEM-3-O | MS3PROEVOHC-C-2 | 0.5 | no route | ISC valve low side | — | |
| W38 | OEM-1-E | MS3PROEVOHC-C-1 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W39 | OEM-1-O | MS3PROEVOHC-A-1 | 0.5 | no route | Alternator control | — | |
| W40 | OEM-1-Q | MS3PROEVOHC-A-2 | 0.5 | no route | Charge lamp | — | |
| W41 | OEM-2-M | MS3PROEVOHC-A-5 | 0.5 | no route | EGR valve | — | |
| W42 | OEM-2-N | MS3PROEVOHC-B-11 | 0.5 | no route | EGR valve | — | |
| W43 | OEM-2-O | MS3PROEVOHC-B-12 | 0.5 | no route | EGR valve | — | |
| W44 | OEM-2-P | MS3PROEVOHC-B-2 | 0.5 | no route | EGR valve | — | |
| W45 | OEM-3-L | MS3PROEVOHC-B-4 | 0.5 | no route | Evap purge solenoid | — | |
| W46 | OEM-3-Q | MS3PROEVOHC-B-6 | 0.5 | no route | VICS solenoid (intake butterflies) | — | |
| W47 | OEM-3-T | MS3PROEVOHC-B-8 | 0.5 | no route | EGR boost solenoid | — | |
| W48 | OEM-3-U | MS3PROEVOHC-B-30 | 0.5 | no route | Canister drain cut valve (CDCV) | — | |
| W49 | OEM-2-K | MS3PROEVOHC-A-24 | 0.5 | no route | Tachometer output | — | |
| W50 | OEM-2-L | MS3PROEVOHC-A-19 | 0.5 | no route | Mass air flow (MAF) | — | |
| W51 | OEM-3-E | MS3PROEVOHC-A-9 | 0.5 | no route | Throttle position (TPS) | — | |
| W52 | OEM-2-C | MS3PROEVOHC-A-25 | 0.5 | no route | Front O2 signal | — | |
| W53 | OEM-3-J | MS3PROEVOHC-A-20 | 0.5 | no route | Rear O2 signal | — | |
| W54 | OEM-2-E | MS3PROEVOHC-A-10 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W55 | OEM-2-B | MS3PROEVOHC-A-11 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W56 | OEM-2-A | MS3PROEVOHC-A-21 | 0.5 | no route | Fuel tank pressure | — | |
| W57 | OEM-3-K | MS3PROEVOHC-A-22 | 0.5 | no route | Fuel level | — | |
| W58 | OEM-3-S | MS3PROEVOHC-A-23 | 0.5 | no route | EGR boost sensor | — | |
| W59 | OEM-2-D | MS3PROEVOHC-B-28 | 0.5 | no route | Vehicle speed | — | |
| W60 | OEM-1-F | MS3PROEVOHC-A-32 | 0.5 | no route | Brake switch | — | |
| W61 | OEM-1-G | MS3PROEVOHC-B-20 | 0.5 | no route | Power steering pressure switch | — | |
| W62 | OEM-1-P | MS3PROEVOHC-B-29 | 0.5 | no route | A/C request | — | |
| W63 | OEM-1-V | MS3PROEVOHC-C-11 | 0.5 | no route | Neutral switch | — | |
| W64 | OEM-3-I | MS3PROEVOHC-C-10 | 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 (8)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-3-U ↔ MS3PROEVOHC-B-30 | OEM-3-U "Canister drain cut valve (CDCV)" [low_side_out] is wired to MS3PROEVOHC-B-30 "Stepper IAC out 1B" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-2-N ↔ MS3PROEVOHC-B-11 | OEM-2-N "EGR valve" [low_side_out] is wired to MS3PROEVOHC-B-11 "Injector out G" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-O ↔ MS3PROEVOHC-B-12 | OEM-2-O "EGR valve" [low_side_out] is wired to MS3PROEVOHC-B-12 "Injector out H" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-P ↔ MS3PROEVOHC-B-2 | OEM-2-P "EGR valve" [low_side_out] is wired to MS3PROEVOHC-B-2 "Injector out B" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-F ↔ MS3PROEVOHC-A-27 | OEM-3-F "Signal ground" [sensor_ground] is wired to MS3PROEVOHC-A-27 "CMP−" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | NET_FAMILY | OEM-3-L ↔ MS3PROEVOHC-B-4 | OEM-3-L "Evap purge solenoid" [low_side_out] is wired to MS3PROEVOHC-B-4 "Injector out C" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-Q ↔ MS3PROEVOHC-B-6 | OEM-3-Q "VICS solenoid (intake butterflies)" [low_side_out] is wired to MS3PROEVOHC-B-6 "Injector out D" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-T ↔ MS3PROEVOHC-B-8 | OEM-3-T "EGR boost solenoid" [low_side_out] is wired to MS3PROEVOHC-B-8 "Injector out E" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
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: AMP EFI MS3Pro EVO+ HC has no battery-constant input; not needed - MS3PROEVOHC-B 19: Digital switched 12V in: 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 | AMP EFI: MS3Pro EVO+ / EVO+ HC manual (fw 1.6.1) pinout tables | https://cdn.shopify.com/s/files/1/0960/0014/7754/files/MS3Pro_User_Manual_Firmware_1.6.1_EVO.pdf?v=1760643022 |
| 4 | vendor_doc | Link G4X MX5NB1X install manual (NB1 1999-00) | https://linkecu.com/documentation/MX5XNB1.pdf |