MX-5 Miata NB2 2001-05 (BP-Z3, VVT; excludes Mazdaspeed) → AMP EFI MS3Pro EVO+ (auto)
MX-5 Miata NB2 2001-05 (BP-Z3, VVT; excludes Mazdaspeed) — AMP EFI — MS3Pro EVO+
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-11
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
Install modifications
Steps on the car itself, outside the harness. Every harness for this car inherits them.
- Re-route the pressure-sensor vacuum hose to the intake manifoldrequired
Re-route the pressure sensor's (Mazda "EGR boost sensor", pin 4AE) vacuum hose directly to the intake manifold, bypassing the EGR boost solenoid. The stock ECU multiplexes baro + MAP through that solenoid: with it off the sensor reads atmosphere, with it energized it reads manifold. After re-routing the sensor reads MAP only, so the standalone needs its own barometric source — its onboard baro sensor if fitted, or a separate baro sensor on a spare analog input. (Alternative, not recommended: keep the hose stock and have the ECU energize the solenoid permanently via a low-side output switched with ignition; this costs an output.)
Why: With the solenoid off (its default) the sensor reads atmospheric pressure, not manifold pressure, so a standalone that uses this sensor as its MAP input would read the wrong value.
Where: EGR boost solenoid and the pressure sensor's vacuum hose (sensor signal 4AE).
Source: Justin Barrera — Miata NA/NB wiring corrections
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 70 wires · 9 connectors · 0 part lines |
| Tools | Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink |
| Order of work | 1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up. |
Build checklist
Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.
| Wire | From | To | Gauge | Colour | Cut | Label | Crimp A | Crimp B | Pin A | Pin B | Continuity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-4-D | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | MS3PROEVO-A-35 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MS3PROEVO-B-3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MS3PROEVO-B-5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MS3PROEVO-B-7 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MS3PROEVO-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | MS3PROEVO-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MS3PROEVO-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | MS3PROEVO-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MS3PROEVO-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MS3PROEVO-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MS3PROEVO-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MS3PROEVO-C-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-4-L | MS3PROEVO-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-3-Y | MS3PROEVO-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | MS3PROEVO-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-3-V | MS3PROEVO-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | MS3PROEVO-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-4-M | MS3PROEVO-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-F | MS3PROEVO-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-3-I | MS3PROEVO-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-2-A | MS3PROEVO-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-2-D | MS3PROEVO-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-2-G | MS3PROEVO-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-2-J | MS3PROEVO-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-4-S | MS3PROEVO-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-2-B | MS3PROEVO-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-C | MS3PROEVO-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-K | MS3PROEVO-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-M | MS3PROEVO-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-3-H | MS3PROEVO-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-O | MS3PROEVO-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-3-J | MS3PROEVO-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-3-P | MS3PROEVO-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-2-Q | MS3PROEVO-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-2-E | MS3PROEVO-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-2-F | MS3PROEVO-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-2-H | MS3PROEVO-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-2-I | MS3PROEVO-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-2-N | MS3PROEVO-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-2-R | MS3PROEVO-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-3-C | MS3PROEVO-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-3-K | MS3PROEVO-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-M | MS3PROEVO-B-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-3-U | MS3PROEVO-B-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-4-AH | MS3PROEVO-B-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-4-R | MS3PROEVO-B-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-3-O | MS3PROEVO-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-4-X | MS3PROEVO-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-4-AE | MS3PROEVO-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-4-V | MS3PROEVO-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-4-AA | MS3PROEVO-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-4-W | MS3PROEVO-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-4-P | MS3PROEVO-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-4-N | MS3PROEVO-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-4-AD | MS3PROEVO-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-3-T | MS3PROEVO-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-3-S | MS3PROEVO-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-4-B | MS3PROEVO-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-4-C | MS3PROEVO-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-4-F | MS3PROEVO-C-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-4-H | MS3PROEVO-C-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-4-I | MS3PROEVO-B-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-4-J | MS3PROEVO-B-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Pre-power install steps (make these cuts/modifications on the car first, then verify the checks below): Re-route the pressure-sensor vacuum hose to the intake manifold.
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | MS3PROEVO-A-35 | MS3PROEVO-A-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MS3PROEVO-A-35 | MS3PROEVO-B-3 | open (OL) | +12 V supply must not touch power ground | |
| 3 | MS3PROEVO-A-8 | MS3PROEVO-A-13 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | MS3PROEVO-A-35 | MS3PROEVO-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | MS3PROEVO-B-3 | MS3PROEVO-A-8 | open (OL) | power ground must not touch 5 V sensor reference |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MS3PROEVO-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | High current out 1 | — | W41 | — | 0.5 | OEM-2-Q | — | — | — |
| 10 | MAT in | — | W60 | — | 0.5 | OEM-4-P | — | — | — |
| 11 | CLT in | — | W61 | — | 0.5 | OEM-4-N | — | — | — |
| 12 | Analog In 6 | — | — | — | — | — | — | — | — |
| 13 | Logic Ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W34 | — | 0.5 | OEM-2-C | — | — | — |
| 15 | CKP− | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 17 | Analog In 7 | — | — | — | — | — | — | — | — |
| 18 | Sensor return | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Analog in 1 | — | W55 | — | 0.5 | OEM-4-X | — | — | — |
| 2 | High current out 2 | — | W42 | — | 0.5 | OEM-2-E | — | — | — |
| 20 | Analog in 2 | — | W56 | — | 0.5 | OEM-4-AE | — | — | — |
| 21 | Analog in 3 | — | W59 | — | 0.5 | OEM-4-W | — | — | — |
| 22 | Analog In 4 | — | W62 | — | 0.5 | OEM-4-AD | — | — | — |
| 23 | Analog In 5 | — | — | — | — | — | — | — | — |
| 24 | Tach out | — | W54 | — | 0.5 | OEM-3-O | — | — | — |
| 25 | O2 in | — | W58 | — | 0.5 | OEM-4-AA | — | — | — |
| 26 | CMP+ | — | W23 | — | 0.5 | OEM-3-V | — | — | — |
| 27 | CMP− | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Fuel pump relay out | — | W33 | — | 0.5 | OEM-2-B | — | — | — |
| 29 | PWM out 2 | — | W36 | — | 0.5 | OEM-2-M | — | — | — |
| 3 | Injector out J | — | W28 | — | 0.5 | OEM-2-A | — | — | — |
| 30 | PWM out 3 | — | W38 | — | 0.5 | OEM-2-O | — | — | — |
| 31 | Knock in 1 | — | W25 | — | 0.5 | OEM-4-M | — | — | — |
| 32 | Digital switched in 1 | — | W64 | — | 0.5 | OEM-3-S | — | — | — |
| 33 | CAN L | — | — | — | — | — | — | — | — |
| 34 | CAN H | — | — | — | — | — | — | — | — |
| 35 | 12V+ switched power in | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Injector out I | — | W29 | — | 0.5 | OEM-2-D | — | — | — |
| 5 | High current out 3 | — | W43 | — | 0.5 | OEM-2-F | — | — | — |
| 6 | CKP+ | — | W21 | — | 0.5 | OEM-3-Y | — | — | — |
| 7 | Knock In 2 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out | — | W20 | — | 0.5 | OEM-4-L | — | — | — |
| 9 | TPS in | — | W57 | — | 0.5 | OEM-4-V | — | — | — |
MS3PROEVO-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | W30 | — | 0.5 | OEM-2-G | — | — | — |
| 10 | Injector out F | — | W31 | — | 0.5 | OEM-2-J | — | — | — |
| 11 | Injector out G | — | W44 | — | 0.5 | OEM-2-H | — | — | — |
| 12 | Injector out H | — | W45 | — | 0.5 | OEM-2-I | — | — | — |
| 13 | Spark out G | — | W26 | — | 0.5 | OEM-3-F | — | — | — |
| 14 | Spark out E | — | W27 | — | 0.5 | OEM-3-I | — | — | — |
| 15 | Spark out C | — | — | — | — | — | — | — | — |
| 16 | Spark out H | — | — | — | — | — | — | — | — |
| 17 | Digital frequency in 2 (Hall) | — | — | — | — | — | — | — | — |
| 18 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 19 | Digital switched 12V in | — | W32 | — | 0.5 | OEM-4-S | — | — | — |
| 2 | Injector out B | — | W46 | — | 0.5 | OEM-2-N | — | — | — |
| 20 | Digital switched in 2 | — | W65 | — | 0.5 | OEM-4-B | — | — | — |
| 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) | — | W63 | — | 0.5 | OEM-3-T | — | — | — |
| 29 | Digital switched in 3 | — | W66 | — | 0.5 | OEM-4-C | — | — | — |
| 3 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Stepper IAC out 1B | — | W50 | — | 0.5 | OEM-3-M | — | — | — |
| 31 | Stepper IAC out 1A | — | W51 | — | 0.5 | OEM-3-U | — | — | — |
| 32 | Stepper IAC out 2A | — | W52 | — | 0.5 | OEM-4-AH | — | — | — |
| 33 | Stepper IAC out 2B | — | W53 | — | 0.5 | OEM-4-R | — | — | — |
| 34 | Digital Frequency in 1 (VR+) | — | W69 | — | 0.5 | OEM-4-I | — | — | — |
| 35 | Digital Frequency in 1 (VR−) | — | W70 | — | 0.5 | OEM-4-J | — | — | — |
| 4 | Injector out C | — | W47 | — | 0.5 | OEM-2-R | — | — | — |
| 5 | Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | W48 | — | 0.5 | OEM-3-C | — | — | — |
| 7 | Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | W49 | — | 0.5 | OEM-3-K | — | — | — |
| 9 | Ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
MS3PROEVO-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM out 5 | — | W40 | — | 0.5 | OEM-3-P | — | — | — |
| 10 | Digital switched in 5 | — | W68 | — | 0.5 | OEM-4-H | — | — | — |
| 11 | Digital switched in 4 | — | W67 | — | 0.5 | OEM-4-F | — | — | — |
| 12 | Digital I/O 5 | — | — | — | — | — | — | — | — |
| 13 | Digital I/O 3 | — | — | — | — | — | — | — | — |
| 14 | Digital I/O 1 | — | — | — | — | — | — | — | — |
| 15 | 5V+ VREF out 2 | — | — | — | — | — | — | — | — |
| 17 | Sensor return | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Sensor return | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor return | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | PWM out 4 | — | W39 | — | 0.5 | OEM-3-J | — | — | — |
| 20 | Sensor return | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Sensor return | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | 5V+ VREF out 1 | — | — | — | — | — | — | — | — |
| 3 | Digital out 2 | — | W37 | — | 0.5 | OEM-3-H | — | — | — |
| 4 | Digital out 1 | — | W35 | — | 0.5 | OEM-2-K | — | — | — |
| 5 | Digital I/O 4 | — | — | — | — | — | — | — | — |
| 6 | Digital I/O 2 | — | — | — | — | — | — | — | — |
| 7 | Analog in 8 | — | — | — | — | — | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W28 | — | 0.5 | MS3PROEVO-A-3 | — | — | — |
| B | Cooling fan relay | — | W33 | — | 0.5 | MS3PROEVO-A-28 | — | — | — |
| C | Condenser fan relay | — | W34 | — | 0.5 | MS3PROEVO-A-14 | — | — | — |
| D | Injector 2 | — | W29 | — | 0.5 | MS3PROEVO-A-4 | — | — | — |
| E | EGR valve | — | W42 | — | 0.5 | MS3PROEVO-A-2 | — | — | — |
| F | EGR valve | — | W43 | — | 0.5 | MS3PROEVO-A-5 | — | — | — |
| G | Injector 3 | — | W30 | — | 0.5 | MS3PROEVO-B-1 | — | — | — |
| H | EGR valve | — | W44 | — | 0.5 | MS3PROEVO-B-11 | — | — | — |
| I | EGR valve | — | W45 | — | 0.5 | MS3PROEVO-B-12 | — | — | — |
| J | Injector 4 | — | W31 | — | 0.5 | MS3PROEVO-B-10 | — | — | — |
| K | A/C clutch relay | — | W35 | — | 0.5 | MS3PROEVO-C-4 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Fuel pump relay | — | W36 | — | 0.5 | MS3PROEVO-A-29 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | W46 | — | 0.5 | MS3PROEVO-B-2 | — | — | — |
| O | Fuel pump relay (non-immobiliser) | — | W38 | — | 0.5 | MS3PROEVO-A-30 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W41 | — | 0.5 | MS3PROEVO-A-1 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | W47 | — | 0.5 | MS3PROEVO-B-4 | — | — | — |
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 | Purge solenoid valve | — | W48 | — | 0.5 | MS3PROEVO-B-6 | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | NC | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W26 | — | 0.5 | MS3PROEVO-B-13 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Main relay | — | W37 | — | 0.5 | MS3PROEVO-C-3 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W27 | — | 0.5 | MS3PROEVO-B-14 | — | — | — |
| J | Front O2 heater | — | W39 | — | 0.5 | MS3PROEVO-C-2 | — | — | — |
| K | EVAP leak detection pump | — | W49 | — | 0.5 | MS3PROEVO-B-8 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Alternator control | — | W50 | — | 0.5 | MS3PROEVO-B-30 | — | — | — |
| N | NC | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | W54 | — | 0.5 | MS3PROEVO-A-24 | — | — | — |
| P | Rear O2 heater | — | W40 | — | 0.5 | MS3PROEVO-C-1 | — | — | — |
| Q | Data link connector (K-line) | — | — | — | — | — | — | — | — |
| R | NC | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W64 | — | 0.5 | MS3PROEVO-A-32 | — | — | — |
| T | Vehicle speed | — | W63 | — | 0.5 | MS3PROEVO-B-28 | — | — | — |
| U | Charge lamp | — | W51 | — | 0.5 | MS3PROEVO-B-31 | — | — | — |
| V | Cam position (CMP) | — | W23 | — | 0.5 | MS3PROEVO-A-26 | — | — | — |
| W | NC | — | — | — | — | — | — | — | — |
| X | NC | — | — | — | — | — | — | — | — |
| Y | Crank position (CKP) | — | W21 | — | 0.5 | MS3PROEVO-A-6 | — | — | — |
| Z | NC | — | — | — | — | — | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W58 | — | 0.5 | MS3PROEVO-A-25 | — | — | — |
| AB | NC | — | — | — | — | — | — | — | — |
| AC | TCM (automatic only) | — | — | — | — | — | — | — | — |
| AD | Fuel level | — | W62 | — | 0.5 | MS3PROEVO-A-22 | — | — | — |
| AE | Pressure sensor (Mazda: EGR boost sensor) | — | W56 | — | 0.5 | MS3PROEVO-A-20 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | — | — | — | — | — | — | — |
| AH | EVAP leak detection pump solenoid valve | — | W52 | — | 0.5 | MS3PROEVO-B-32 | — | — | — |
| B | Brake switch | — | W65 | — | 0.5 | MS3PROEVO-B-20 | — | — | — |
| C | Power steering pressure switch | — | W66 | — | 0.5 | MS3PROEVO-B-29 | — | — | — |
| D | VVT oil-control solenoid +12V feed | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| E | Diagnostic (DLC TEN) (NA) | — | — | — | — | — | — | — | — |
| F | A/C request | — | W67 | — | 0.5 | MS3PROEVO-C-11 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | W68 | — | 0.5 | MS3PROEVO-C-10 | — | — | — |
| I | Clutch switch | — | W69 | — | 0.5 | MS3PROEVO-B-34 | — | — | — |
| J | VTCS vacuum switch | — | W70 | — | 0.5 | MS3PROEVO-B-35 | — | — | — |
| K | NC | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W20 | — | 0.5 | MS3PROEVO-A-8 | — | — | — |
| M | Knock sensor | — | W25 | — | 0.5 | MS3PROEVO-A-31 | — | — | — |
| N | Intake air temperature (IAT) | — | W61 | — | 0.5 | MS3PROEVO-A-11 | — | — | — |
| O | Signal ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W60 | — | 0.5 | MS3PROEVO-A-10 | — | — | — |
| Q | NC | — | — | — | — | — | — | — | — |
| R | VVT oil-control solenoid (low-side control) | — | W53 | — | 0.5 | MS3PROEVO-B-33 | — | — | — |
| S | Ignition switch (IG1) sense | — | W32 | — | 0.5 | MS3PROEVO-B-19 | — | — | — |
| T | Generator output voltage (terminal P) | — | — | — | — | — | — | — | — |
| U | NC | — | — | — | — | — | — | — | — |
| V | Throttle position (TPS) | — | W57 | — | 0.5 | MS3PROEVO-A-9 | — | — | — |
| W | Front O2 signal | — | W59 | — | 0.5 | MS3PROEVO-A-21 | — | — | — |
| X | Mass air flow (MAF) | — | W55 | — | 0.5 | MS3PROEVO-A-19 | — | — | — |
| Y | NC | — | — | — | — | — | — | — | — |
| Z | TCM (automatic only) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W13 | — | 0.5 | MS3PROEVO-A-13 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MS3PROEVO-A-18 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | MS3PROEVO-C-17 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MS3PROEVO-C-18 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MS3PROEVO-C-19 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MS3PROEVO-C-20 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MS3PROEVO-C-21 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | MS3PROEVO-A-15 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | MS3PROEVO-A-27 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-4-D | — | — | — |
| 1 | — | — | W4 | — | 0.85 | MS3PROEVO-A-35 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MS3PROEVO-B-3 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROEVO-B-5 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MS3PROEVO-B-7 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MS3PROEVO-B-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | MS3PROEVO-A-3 | Injector out J | injector_out | YB | single_source |
| OEM-2-B | Cooling fan relay | low_side_out | MS3PROEVO-A-28 | Fuel pump relay out | low_side_out | RY | single_source |
| OEM-2-C | Condenser fan relay | low_side_out | MS3PROEVO-A-14 | PWM / Idle Out 1 | low_side_out | LW | single_source |
| OEM-2-D | Injector 2 | injector_out | MS3PROEVO-A-4 | Injector out I | injector_out | VG | single_source |
| OEM-2-E | EGR valve | low_side_out | MS3PROEVO-A-2 | High current out 2 | low_side_out | Lg | single_source |
| OEM-2-F | EGR valve | low_side_out | MS3PROEVO-A-5 | High current out 3 | low_side_out | WG | single_source |
| OEM-2-G | Injector 3 | injector_out | MS3PROEVO-B-1 | Injector out A | injector_out | YR | single_source |
| OEM-2-H | EGR valve | low_side_out | MS3PROEVO-B-11 | Injector out G | injector_out | PB | single_source |
| OEM-2-I | EGR valve | low_side_out | MS3PROEVO-B-12 | Injector out H | injector_out | P | single_source |
| OEM-2-J | Injector 4 | injector_out | MS3PROEVO-B-10 | Injector out F | injector_out | YG | single_source |
| OEM-2-K | A/C clutch relay | low_side_out | MS3PROEVO-C-4 | Digital out 1 | low_side_out | LB | single_source |
| OEM-2-L | NC | — | — | — | — | unverified | |
| OEM-2-M | Fuel pump relay | low_side_out | MS3PROEVO-A-29 | PWM out 2 | low_side_out | RW | single_source |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | MS3PROEVO-B-2 | Injector out B | injector_out | BW | single_source |
| OEM-2-O | Fuel pump relay (non-immobiliser) | low_side_out | MS3PROEVO-A-30 | PWM out 3 | low_side_out | R | single_source |
| OEM-2-P | ISC valve +14V feed | power_in | MS3PROEVO-A-35 | 12V+ switched power in | power_in | Or | single_source |
| OEM-2-Q | ISC valve low side | low_side_out | MS3PROEVO-A-1 | High current out 1 | low_side_out | VR | single_source |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | MS3PROEVO-B-4 | Injector out C | injector_out | WL | single_source |
| OEM-3-A | Power ground | ground | MS3PROEVO-B-3 + MS3PROEVO-B-5 + MS3PROEVO-B-7 + MS3PROEVO-B-9 | Ground + Ground + Ground + Ground | ground | B | single_source |
| OEM-3-B | Power ground | ground | MS3PROEVO-B-3 + MS3PROEVO-B-5 + MS3PROEVO-B-7 + MS3PROEVO-B-9 | Ground + Ground + Ground + Ground | ground | BR | single_source |
| OEM-3-C | Purge solenoid valve | low_side_out | MS3PROEVO-B-6 | Injector out D | injector_out | GY | single_source |
| OEM-3-D | EGR boost solenoid | — | — | — | — | GyB | single_source |
| OEM-3-E | NC | — | — | — | — | unverified | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | MS3PROEVO-B-13 | Spark out G | ignition_out | BrW | single_source |
| OEM-3-G | NC | — | — | — | — | unverified | |
| OEM-3-H | Main relay | low_side_out | MS3PROEVO-C-3 | Digital out 2 | low_side_out | LOr | single_source |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | MS3PROEVO-B-14 | Spark out E | ignition_out | BY | single_source |
| OEM-3-J | Front O2 heater | low_side_out | MS3PROEVO-C-2 | PWM out 4 | low_side_out | BOr | single_source |
| OEM-3-K | EVAP leak detection pump | low_side_out | MS3PROEVO-B-8 | Injector out E | injector_out | YB | single_source |
| OEM-3-L | NC | — | — | — | — | unverified | |
| OEM-3-M | Alternator control | low_side_out | MS3PROEVO-B-30 | Stepper IAC out 1B | hbridge_out | GyR | single_source |
| OEM-3-N | NC | — | — | — | — | unverified | |
| OEM-3-O | Tachometer output | tacho_out | MS3PROEVO-A-24 | Tach out | tacho_out | GOr | single_source |
| OEM-3-P | Rear O2 heater | low_side_out | MS3PROEVO-C-1 | PWM out 5 | low_side_out | WB | single_source |
| OEM-3-Q | Data link connector (K-line) | serial | — | — | — | GW | single_source |
| OEM-3-R | NC | — | — | — | — | unverified | |
| OEM-3-S | Immobiliser | digital_in | MS3PROEVO-A-32 | Digital switched in 1 | digital_in | RB | single_source |
| OEM-3-T | Vehicle speed | digital_in | MS3PROEVO-B-28 | Digital frequency in 1 (unconditioned) | digital_in | GR | single_source |
| OEM-3-U | Charge lamp | low_side_out | MS3PROEVO-B-31 | Stepper IAC out 1A | hbridge_out | BrR | single_source |
| OEM-3-V | Cam position (CMP) | trigger_in | MS3PROEVO-A-26 | CMP+ | trigger_in | GyL | single_source |
| OEM-3-W | NC | — | — | — | — | unverified | |
| OEM-3-X | NC | — | — | — | — | unverified | |
| OEM-3-Y | Crank position (CKP) | trigger_in | MS3PROEVO-A-6 | CKP+ | trigger_in | VW | single_source |
| OEM-3-Z | NC | — | — | — | — | unverified | |
| OEM-4-A | Power ground | ground | MS3PROEVO-B-3 + MS3PROEVO-B-5 + MS3PROEVO-B-7 + MS3PROEVO-B-9 | Ground + Ground + Ground + Ground | ground | BL | single_source |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | MS3PROEVO-A-25 | O2 in | lambda_nb_in | R | single_source |
| OEM-4-AB | NC | — | — | — | — | unverified | |
| OEM-4-AC | TCM (automatic only) | — | — | — | — | VG | single_source |
| OEM-4-AD | Fuel level | analog_in | MS3PROEVO-A-22 | Analog In 4 | analog_in | BrB | single_source |
| OEM-4-AE | Pressure sensor (Mazda: EGR boost sensor) | analog_in | MS3PROEVO-A-20 | Analog in 2 | analog_in | LY | corroborated |
| OEM-4-AF | ECU power +14V (main relay) | power_in | MS3PROEVO-A-35 | 12V+ switched power in | power_in | WR | single_source |
| OEM-4-AG | Constant +12V | power_in | — | — | — | LR | single_source |
| OEM-4-AH | EVAP leak detection pump solenoid valve | low_side_out | MS3PROEVO-B-32 | Stepper IAC out 2A | hbridge_out | RG | single_source |
| OEM-4-B | Brake switch | digital_in | MS3PROEVO-B-20 | Digital switched in 2 | digital_in | G | single_source |
| OEM-4-C | Power steering pressure switch | digital_in | MS3PROEVO-B-29 | Digital switched in 3 | digital_in | Br | single_source |
| OEM-4-D | VVT oil-control solenoid +12V feed | power_in | MS3PROEVO-A-35 | 12V+ switched power in | power_in | Y | single_source |
| OEM-4-E | Diagnostic (DLC TEN) (NA) | serial | — | — | — | LY | single_source |
| OEM-4-F | A/C request | digital_in | MS3PROEVO-C-11 | Digital switched in 4 | digital_in | LgB | single_source |
| OEM-4-G | NC | — | — | — | — | unverified | |
| OEM-4-H | Neutral switch | digital_in | MS3PROEVO-C-10 | Digital switched in 5 | digital_in | V | single_source |
| OEM-4-I | Clutch switch | digital_in | MS3PROEVO-B-34 | Digital Frequency in 1 (VR+) | digital_in | WG | single_source |
| OEM-4-J | VTCS vacuum switch | digital_in | MS3PROEVO-B-35 | Digital Frequency in 1 (VR−) | digital_in | Or | single_source |
| OEM-4-K | NC | — | — | — | — | unverified | |
| OEM-4-L | +5V sensor supply | vref | MS3PROEVO-A-8 | 5V+ VREF out | vref | LgR | single_source |
| OEM-4-M | Knock sensor | knock_in | MS3PROEVO-A-31 | Knock in 1 | knock_in | W | single_source |
| OEM-4-N | Intake air temperature (IAT) | temp_in | MS3PROEVO-A-11 | CLT in | temp_in | PL | single_source |
| OEM-4-O | Signal ground | sensor_ground | MS3PROEVO-A-13 + MS3PROEVO-A-15 + MS3PROEVO-A-18 + MS3PROEVO-A-27 + MS3PROEVO-C-17 + MS3PROEVO-C-18 + MS3PROEVO-C-19 + MS3PROEVO-C-20 + MS3PROEVO-C-21 | Logic Ground + CKP− + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | BR | single_source |
| OEM-4-P | Coolant temperature (ECT) | temp_in | MS3PROEVO-A-10 | MAT in | temp_in | RL | single_source |
| OEM-4-Q | NC | — | — | — | — | unverified | |
| OEM-4-R | VVT oil-control solenoid (low-side control) | low_side_out | MS3PROEVO-B-33 | Stepper IAC out 2B | hbridge_out | VY | corroborated |
| OEM-4-S | Ignition switch (IG1) sense | digital_in | MS3PROEVO-B-19 | Digital switched 12V in | digital_in | BW | single_source |
| OEM-4-T | Generator output voltage (terminal P) | — | — | — | — | Gy | single_source |
| OEM-4-U | NC | — | — | — | — | unverified | |
| OEM-4-V | Throttle position (TPS) | analog_in | MS3PROEVO-A-9 | TPS in | analog_in | GB | single_source |
| OEM-4-W | Front O2 signal | lambda_nb_in | MS3PROEVO-A-21 | Analog in 3 | analog_in | L | single_source |
| OEM-4-X | Mass air flow (MAF) | analog_in | MS3PROEVO-A-19 | Analog in 1 | analog_in | P | single_source |
| OEM-4-Y | NC | — | — | — | — | unverified | |
| OEM-4-Z | TCM (automatic only) | — | — | — | — | PB | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W3 | OEM-4-D | SP-14V-1 | 0.85 | no route | VVT oil-control solenoid +12V feed | — | |
| W4 | SP-14V-1 | MS3PROEVO-A-35 | 0.85 | no route | 12V+ switched power in | — | |
| W5 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-4-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | SP-GND-1 | MS3PROEVO-B-3 | 0.85 | no route | Ground | — | |
| W9 | SP-GND-1 | MS3PROEVO-B-5 | 0.85 | no route | Ground | — | |
| W10 | SP-GND-1 | MS3PROEVO-B-7 | 0.85 | no route | Ground | — | |
| W11 | SP-GND-1 | MS3PROEVO-B-9 | 0.85 | no route | Ground | — | |
| W12 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W13 | SP-0V-1 | MS3PROEVO-A-13 | 0.5 | no route | Logic Ground | — | |
| W14 | SP-0V-1 | MS3PROEVO-A-18 | 0.5 | no route | Sensor return | — | |
| W15 | SP-0V-1 | MS3PROEVO-C-17 | 0.5 | no route | Sensor return | — | |
| W16 | SP-0V-1 | MS3PROEVO-C-18 | 0.5 | no route | Sensor return | — | |
| W17 | SP-0V-1 | MS3PROEVO-C-19 | 0.5 | no route | Sensor return | — | |
| W18 | SP-0V-1 | MS3PROEVO-C-20 | 0.5 | no route | Sensor return | — | |
| W19 | SP-0V-1 | MS3PROEVO-C-21 | 0.5 | no route | Sensor return | — | |
| W20 | OEM-4-L | MS3PROEVO-A-8 | 0.5 | no route | +5V sensor supply | — | |
| W21 | OEM-3-Y | MS3PROEVO-A-6 | 0.5 | no route | Crank position (CKP) | — | |
| W22 | SP-0V-1 | MS3PROEVO-A-15 | 0.5 | no route | CKP− | — | |
| W23 | OEM-3-V | MS3PROEVO-A-26 | 0.5 | no route | Cam position (CMP) | — | |
| W24 | SP-0V-1 | MS3PROEVO-A-27 | 0.5 | no route | CMP− | — | |
| W25 | OEM-4-M | MS3PROEVO-A-31 | 0.5 | no route | Knock sensor | — | |
| W26 | OEM-3-F | MS3PROEVO-B-13 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W27 | OEM-3-I | MS3PROEVO-B-14 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W28 | OEM-2-A | MS3PROEVO-A-3 | 0.5 | no route | Injector 1 | — | |
| W29 | OEM-2-D | MS3PROEVO-A-4 | 0.5 | no route | Injector 2 | — | |
| W30 | OEM-2-G | MS3PROEVO-B-1 | 0.5 | no route | Injector 3 | — | |
| W31 | OEM-2-J | MS3PROEVO-B-10 | 0.5 | no route | Injector 4 | — | |
| W32 | OEM-4-S | MS3PROEVO-B-19 | 0.5 | no route | Ignition switch (IG1) sense | — | |
| W33 | OEM-2-B | MS3PROEVO-A-28 | 0.5 | no route | Cooling fan relay | — | |
| W34 | OEM-2-C | MS3PROEVO-A-14 | 0.5 | no route | Condenser fan relay | — | |
| W35 | OEM-2-K | MS3PROEVO-C-4 | 0.5 | no route | A/C clutch relay | — | |
| W36 | OEM-2-M | MS3PROEVO-A-29 | 0.5 | no route | Fuel pump relay | — | |
| W37 | OEM-3-H | MS3PROEVO-C-3 | 0.5 | no route | Main relay | — | |
| W38 | OEM-2-O | MS3PROEVO-A-30 | 0.5 | no route | Fuel pump relay (non-immobiliser) | — | |
| W39 | OEM-3-J | MS3PROEVO-C-2 | 0.5 | no route | Front O2 heater | — | |
| W40 | OEM-3-P | MS3PROEVO-C-1 | 0.5 | no route | Rear O2 heater | — | |
| W41 | OEM-2-Q | MS3PROEVO-A-1 | 0.5 | no route | ISC valve low side | — | |
| W42 | OEM-2-E | MS3PROEVO-A-2 | 0.5 | no route | EGR valve | — | |
| W43 | OEM-2-F | MS3PROEVO-A-5 | 0.5 | no route | EGR valve | — | |
| W44 | OEM-2-H | MS3PROEVO-B-11 | 0.5 | no route | EGR valve | — | |
| W45 | OEM-2-I | MS3PROEVO-B-12 | 0.5 | no route | EGR valve | — | |
| W46 | OEM-2-N | MS3PROEVO-B-2 | 0.5 | no route | VTCS solenoid (intake butterflies) | — | |
| W47 | OEM-2-R | MS3PROEVO-B-4 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W48 | OEM-3-C | MS3PROEVO-B-6 | 0.5 | no route | Purge solenoid valve | — | |
| W49 | OEM-3-K | MS3PROEVO-B-8 | 0.5 | no route | EVAP leak detection pump | — | |
| W50 | OEM-3-M | MS3PROEVO-B-30 | 0.5 | no route | Alternator control | — | |
| W51 | OEM-3-U | MS3PROEVO-B-31 | 0.5 | no route | Charge lamp | — | |
| W52 | OEM-4-AH | MS3PROEVO-B-32 | 0.5 | no route | EVAP leak detection pump solenoid valve | — | |
| W53 | OEM-4-R | MS3PROEVO-B-33 | 0.5 | no route | VVT oil-control solenoid (low-side control) | — | |
| W54 | OEM-3-O | MS3PROEVO-A-24 | 0.5 | no route | Tachometer output | — | |
| W55 | OEM-4-X | MS3PROEVO-A-19 | 0.5 | no route | Mass air flow (MAF) | — | |
| W56 | OEM-4-AE | MS3PROEVO-A-20 | 0.5 | no route | Pressure sensor (Mazda: EGR boost sensor) | — | |
| W57 | OEM-4-V | MS3PROEVO-A-9 | 0.5 | no route | Throttle position (TPS) | — | |
| W58 | OEM-4-AA | MS3PROEVO-A-25 | 0.5 | no route | Rear O2 signal | — | |
| W59 | OEM-4-W | MS3PROEVO-A-21 | 0.5 | no route | Front O2 signal | — | |
| W60 | OEM-4-P | MS3PROEVO-A-10 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W61 | OEM-4-N | MS3PROEVO-A-11 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W62 | OEM-4-AD | MS3PROEVO-A-22 | 0.5 | no route | Fuel level | — | |
| W63 | OEM-3-T | MS3PROEVO-B-28 | 0.5 | no route | Vehicle speed | — | |
| W64 | OEM-3-S | MS3PROEVO-A-32 | 0.5 | no route | Immobiliser | — | |
| W65 | OEM-4-B | MS3PROEVO-B-20 | 0.5 | no route | Brake switch | — | |
| W66 | OEM-4-C | MS3PROEVO-B-29 | 0.5 | no route | Power steering pressure switch | — | |
| W67 | OEM-4-F | MS3PROEVO-C-11 | 0.5 | no route | A/C request | — | |
| W68 | OEM-4-H | MS3PROEVO-C-10 | 0.5 | no route | Neutral switch | — | |
| W69 | OEM-4-I | MS3PROEVO-B-34 | 0.5 | no route | Clutch switch | — | |
| W70 | OEM-4-J | MS3PROEVO-B-35 | 0.5 | no route | VTCS vacuum switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (12)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-3-M ↔ MS3PROEVO-B-30 | OEM-3-M "Alternator control" [low_side_out] is wired to MS3PROEVO-B-30 "Stepper IAC out 1B" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-U ↔ MS3PROEVO-B-31 | OEM-3-U "Charge lamp" [low_side_out] is wired to MS3PROEVO-B-31 "Stepper IAC out 1A" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-4-AH ↔ MS3PROEVO-B-32 | OEM-4-AH "EVAP leak detection pump solenoid valve" [low_side_out] is wired to MS3PROEVO-B-32 "Stepper IAC out 2A" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-4-R ↔ MS3PROEVO-B-33 | OEM-4-R "VVT oil-control solenoid (low-side control)" [low_side_out] is wired to MS3PROEVO-B-33 "Stepper IAC out 2B" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | NET_FAMILY | OEM-2-H ↔ MS3PROEVO-B-11 | OEM-2-H "EGR valve" [low_side_out] is wired to MS3PROEVO-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-I ↔ MS3PROEVO-B-12 | OEM-2-I "EGR valve" [low_side_out] is wired to MS3PROEVO-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-N ↔ MS3PROEVO-B-2 | OEM-2-N "VTCS solenoid (intake butterflies)" [low_side_out] is wired to MS3PROEVO-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-2-R ↔ MS3PROEVO-B-4 | OEM-2-R "Malfunction indicator lamp (MIL)" [low_side_out] is wired to MS3PROEVO-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-C ↔ MS3PROEVO-B-6 | OEM-3-C "Purge solenoid valve" [low_side_out] is wired to MS3PROEVO-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-K ↔ MS3PROEVO-B-8 | OEM-3-K "EVAP leak detection pump" [low_side_out] is wired to MS3PROEVO-B-8 "Injector out E" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-O ↔ MS3PROEVO-A-15 | OEM-4-O "Signal ground" [sensor_ground] is wired to MS3PROEVO-A-15 "CKP−" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 6 optional OEM pins are not mapped: OEM-3-D EGR boost solenoid; OEM-3-Q Data link connector (K-line); OEM-4-AC TCM (automatic only); OEM-4-E Diagnostic (DLC TEN) (NA); OEM-4-T Generator output voltage (terminal P); OEM-4-Z TCM (automatic only) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-4-AG | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-4 AG: Constant +12V: AMP EFI MS3Pro EVO+ has no battery-constant input; not needed - OEM-3 Q: Data link connector (K-line): no free k_line on AMP EFI MS3Pro EVO+ - OEM-4 E: Diagnostic (DLC TEN) (NA): no free k_line on AMP EFI MS3Pro EVO+ - OEM-3 D: EGR boost solenoid: not classified in the library; wire by hand - OEM-4 AC: TCM (automatic only): not classified in the library; wire by hand - OEM-4 T: Generator output voltage (terminal P): not classified in the library; wire by hand - OEM-4 Z: TCM (automatic only): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | oem_manual | 2005 Mazda MX-5 Miata Engine Performance Control System (PCM terminal voltage reference, BP and BP WITH TC) | https://trull.org/alex/pubmirror/www.mellens.net/mazda/Mazda-Miata-2005/engine_control_system.pdf | — | — | — |
| 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 | archive | 2026-10-05 | d5dd8a31822d |
| 4 | vendor_doc | Adaptronic eSel039 Select Plugin ECU for Mazda MX5 / Miata NB8B/C (OEM ECU pinout) | https://www.miataturbo.net/attachments/ecus-tuning-54/04-msm-ecu-pinout-104032/nb8bc_oem_ecu_pinouts-224948d1602912806 | — | — | — |
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |
| 4 | oem_manual | Mazda MX-5 NB2 (2003) wiring diagram — engine / starting / charging | https://web.archive.org/web/20191104195207/http://mellens.net/mazda/mazda_miata_extra_manual/2003_wiring.pdf | — | 2026-10-05 | 5ee0777f12c1 |
| 2 | expert_report | Justin Barrera — Miata NA/NB wiring corrections | — | — | — | — |