MX-5 Miata NB2 2001-05 (BP-Z3, VVT; excludes Mazdaspeed) → rusEFI Proteus (auto)
MX-5 Miata NB2 2001-05 (BP-Z3, VVT; excludes Mazdaspeed) — rusEFI — Proteus
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 | 68 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 | PROTEUS-Black23-23 | 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 | PROTEUS-Black23-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-4-L | PROTEUS-White35-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-Y | PROTEUS-Black23-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-3-V | PROTEUS-Black23-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-4-M | PROTEUS-White35-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-3-F | PROTEUS-Black35-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-3-I | PROTEUS-Black35-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-2-A | PROTEUS-Black35-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-2-D | PROTEUS-Black35-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-2-G | PROTEUS-Black35-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-J | PROTEUS-Black35-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-4-S | PROTEUS-Black23-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-B | PROTEUS-Black35-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-C | PROTEUS-Black35-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-K | PROTEUS-Black35-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-M | PROTEUS-Black35-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-3-H | PROTEUS-Black35-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-2-O | PROTEUS-Black35-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-3-J | PROTEUS-Black35-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-3-P | PROTEUS-Black23-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-2-Q | PROTEUS-Black35-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-2-E | PROTEUS-Black35-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-2-F | PROTEUS-Black35-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-2-H | PROTEUS-Black35-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-2-I | PROTEUS-Black35-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-2-N | PROTEUS-Black23-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-2-R | PROTEUS-Black23-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-3-C | PROTEUS-Black23-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-4-X | PROTEUS-White35-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-4-AE | PROTEUS-White35-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-4-V | PROTEUS-White35-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-4-AA | PROTEUS-White35-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-4-W | PROTEUS-White35-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-4-P | PROTEUS-White35-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-4-N | PROTEUS-White35-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-4-AD | PROTEUS-White35-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-3-T | PROTEUS-Black23-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-3-S | PROTEUS-Black23-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-4-B | PROTEUS-Black23-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-4-C | PROTEUS-Black23-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-4-F | PROTEUS-Black23-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-4-H | PROTEUS-White35-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-4-I | PROTEUS-White35-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-4-J | PROTEUS-White35-17 | 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 | PROTEUS-Black23-23 | PROTEUS-Black23-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | PROTEUS-Black23-23 | PROTEUS-Black23-14 | open (OL) | +12 V supply must not touch power ground | |
| 3 | PROTEUS-White35-10 | PROTEUS-Black23-13 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | PROTEUS-Black23-14 | PROTEUS-White35-10 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | PROTEUS-Black23-23 | PROTEUS-White35-10 | open (OL) | +12 V supply 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
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W32 | — | 0.5 | PROTEUS-Black35-3 | — | — | — |
| B | Cooling fan relay | — | W37 | — | 0.5 | PROTEUS-Black35-20 | — | — | — |
| C | Condenser fan relay | — | W38 | — | 0.5 | PROTEUS-Black35-9 | — | — | — |
| D | Injector 2 | — | W33 | — | 0.5 | PROTEUS-Black35-15 | — | — | — |
| E | EGR valve | — | W46 | — | 0.5 | PROTEUS-Black35-6 | — | — | — |
| F | EGR valve | — | W47 | — | 0.5 | PROTEUS-Black35-7 | — | — | — |
| G | Injector 3 | — | W34 | — | 0.5 | PROTEUS-Black35-4 | — | — | — |
| H | EGR valve | — | W48 | — | 0.5 | PROTEUS-Black35-19 | — | — | — |
| I | EGR valve | — | W49 | — | 0.5 | PROTEUS-Black35-8 | — | — | — |
| J | Injector 4 | — | W35 | — | 0.5 | PROTEUS-Black35-16 | — | — | — |
| K | A/C clutch relay | — | W39 | — | 0.5 | PROTEUS-Black35-21 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Fuel pump relay | — | W40 | — | 0.5 | PROTEUS-Black35-10 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | W50 | — | 0.5 | PROTEUS-Black23-7 | — | — | — |
| O | Fuel pump relay (non-immobiliser) | — | W42 | — | 0.5 | PROTEUS-Black35-12 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W45 | — | 0.5 | PROTEUS-Black35-5 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | W51 | — | 0.5 | PROTEUS-Black23-15 | — | — | — |
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 | — | W52 | — | 0.5 | PROTEUS-Black23-8 | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | NC | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W30 | — | 0.5 | PROTEUS-Black35-35 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Main relay | — | W41 | — | 0.5 | PROTEUS-Black35-11 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W31 | — | 0.5 | PROTEUS-Black35-34 | — | — | — |
| J | Front O2 heater | — | W43 | — | 0.5 | PROTEUS-Black35-23 | — | — | — |
| K | EVAP leak detection pump | — | — | — | — | — | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| N | NC | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | W44 | — | 0.5 | PROTEUS-Black23-6 | — | — | — |
| Q | Data link connector (K-line) | — | — | — | — | — | — | — | — |
| R | NC | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W62 | — | 0.5 | PROTEUS-Black23-10 | — | — | — |
| T | Vehicle speed | — | W61 | — | 0.5 | PROTEUS-Black23-2 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W28 | — | 0.5 | PROTEUS-Black23-1 | — | — | — |
| W | NC | — | — | — | — | — | — | — | — |
| X | NC | — | — | — | — | — | — | — | — |
| Y | Crank position (CKP) | — | W26 | — | 0.5 | PROTEUS-Black23-5 | — | — | — |
| 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 | — | W56 | — | 0.5 | PROTEUS-White35-25 | — | — | — |
| AB | NC | — | — | — | — | — | — | — | — |
| AC | TCM (automatic only) | — | — | — | — | — | — | — | — |
| AD | Fuel level | — | W60 | — | 0.5 | PROTEUS-White35-26 | — | — | — |
| AE | Pressure sensor (Mazda: EGR boost sensor) | — | W54 | — | 0.5 | PROTEUS-White35-24 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | — | — | — | — | — | — | — |
| AH | EVAP leak detection pump solenoid valve | — | — | — | — | — | — | — | — |
| B | Brake switch | — | W63 | — | 0.5 | PROTEUS-Black23-3 | — | — | — |
| C | Power steering pressure switch | — | W64 | — | 0.5 | PROTEUS-Black23-9 | — | — | — |
| D | VVT oil-control solenoid +12V feed | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| E | Diagnostic (DLC TEN) (NA) | — | — | — | — | — | — | — | — |
| F | A/C request | — | W65 | — | 0.5 | PROTEUS-Black23-11 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | W66 | — | 0.5 | PROTEUS-White35-16 | — | — | — |
| I | Clutch switch | — | W67 | — | 0.5 | PROTEUS-White35-27 | — | — | — |
| J | VTCS vacuum switch | — | W68 | — | 0.5 | PROTEUS-White35-17 | — | — | — |
| K | NC | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W25 | — | 0.5 | PROTEUS-White35-10 | — | — | — |
| M | Knock sensor | — | W29 | — | 0.5 | PROTEUS-White35-34 | — | — | — |
| N | Intake air temperature (IAT) | — | W59 | — | 0.5 | PROTEUS-White35-30 | — | — | — |
| O | Signal ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W58 | — | 0.5 | PROTEUS-White35-20 | — | — | — |
| Q | NC | — | — | — | — | — | — | — | — |
| R | VVT oil-control solenoid (low-side control) | — | — | — | — | — | — | — | — |
| S | Ignition switch (IG1) sense | — | W36 | — | 0.5 | PROTEUS-Black23-18 | — | — | — |
| T | Generator output voltage (terminal P) | — | — | — | — | — | — | — | — |
| U | NC | — | — | — | — | — | — | — | — |
| V | Throttle position (TPS) | — | W55 | — | 0.5 | PROTEUS-White35-14 | — | — | — |
| W | Front O2 signal | — | W57 | — | 0.5 | PROTEUS-White35-15 | — | — | — |
| X | Mass air flow (MAF) | — | W53 | — | 0.5 | PROTEUS-White35-13 | — | — | — |
| Y | NC | — | — | — | — | — | — | — | — |
| Z | TCM (automatic only) | — | — | — | — | — | — | — | — |
PROTEUS-Black23
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Digital 2 | — | W28 | — | 0.5 | OEM-3-V | — | — | — |
| 10 | Digital 1 | — | W62 | — | 0.5 | OEM-3-S | — | — | — |
| 11 | Digital 6 | — | W65 | — | 0.5 | OEM-4-F | — | — | — |
| 12 | VR 2 negative | — | — | — | — | — | — | — | — |
| 13 | VR 1 negative | — | W27 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | ETB 2 positive | — | W51 | — | 0.5 | OEM-2-R | — | — | — |
| 16 | CAN 1 Low | — | — | — | — | — | — | — | — |
| 17 | CAN 1 High | — | — | — | — | — | — | — | — |
| 18 | Ignition switch in | — | W36 | — | 0.5 | OEM-4-S | — | — | — |
| 19 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Digital 3 | — | W61 | — | 0.5 | OEM-3-T | — | — | — |
| 20 | Power ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | CAN 2 Low | — | — | — | — | — | — | — | — |
| 22 | CAN 2 High | — | — | — | — | — | — | — | — |
| 23 | Main relay feed | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Digital 4 | — | W63 | — | 0.5 | OEM-4-B | — | — | — |
| 4 | VR 2 positive | — | — | — | — | — | — | — | — |
| 5 | VR 1 positive | — | W26 | — | 0.5 | OEM-3-Y | — | — | — |
| 6 | ETB 1 negative | — | W44 | — | 0.5 | OEM-3-P | — | — | — |
| 7 | ETB 1 positive | — | W50 | — | 0.5 | OEM-2-N | — | — | — |
| 8 | ETB 2 negative | — | W52 | — | 0.5 | OEM-3-C | — | — | — |
| 9 | Digital 5 | — | W64 | — | 0.5 | OEM-4-C | — | — | — |
PROTEUS-Black35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Highside 2 | — | — | — | — | — | — | — | — |
| 10 | Lowside 13 | — | W40 | — | 0.5 | OEM-2-M | — | — | — |
| 11 | Lowside 14 | — | W41 | — | 0.5 | OEM-3-H | — | — | — |
| 12 | Lowside 15 | — | W42 | — | 0.5 | OEM-2-O | — | — | — |
| 13 | Highside 3 | — | — | — | — | — | — | — | — |
| 14 | Highside 4 | — | — | — | — | — | — | — | — |
| 15 | Injector 2 | — | W33 | — | 0.5 | OEM-2-D | — | — | — |
| 16 | Injector 4 | — | W35 | — | 0.5 | OEM-2-J | — | — | — |
| 17 | Power ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Power ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Injector 8 | — | W48 | — | 0.5 | OEM-2-H | — | — | — |
| 2 | Highside 1 | — | — | — | — | — | — | — | — |
| 20 | Lowside 10 | — | W37 | — | 0.5 | OEM-2-B | — | — | — |
| 21 | Lowside 12 | — | W39 | — | 0.5 | OEM-2-K | — | — | — |
| 22 | Ignition 3 | — | — | — | — | — | — | — | — |
| 23 | Lowside 16 | — | W43 | — | 0.5 | OEM-3-J | — | — | — |
| 24 | Power ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Ignition 12 | — | — | — | — | — | — | — | — |
| 26 | Ignition 11 | — | — | — | — | — | — | — | — |
| 27 | Ignition 10 | — | — | — | — | — | — | — | — |
| 28 | Ignition 9 | — | — | — | — | — | — | — | — |
| 29 | Ignition 8 | — | — | — | — | — | — | — | — |
| 3 | Injector 1 | — | W32 | — | 0.5 | OEM-2-A | — | — | — |
| 30 | Ignition 7 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 5 | — | — | — | — | — | — | — | — |
| 33 | Ignition 4 | — | — | — | — | — | — | — | — |
| 34 | Ignition 2 | — | W31 | — | 0.5 | OEM-3-I | — | — | — |
| 35 | Ignition 1 | — | W30 | — | 0.5 | OEM-3-F | — | — | — |
| 4 | Injector 3 | — | W34 | — | 0.5 | OEM-2-G | — | — | — |
| 5 | Injector 5 | — | W45 | — | 0.5 | OEM-2-Q | — | — | — |
| 6 | Injector 6 | — | W46 | — | 0.5 | OEM-2-E | — | — | — |
| 7 | Injector 7 | — | W47 | — | 0.5 | OEM-2-F | — | — | — |
| 8 | Injector 9 | — | W49 | — | 0.5 | OEM-2-I | — | — | — |
| 9 | Lowside 11 | — | W38 | — | 0.5 | OEM-2-C | — | — | — |
PROTEUS-White35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | 5V supply #2 | — | W25 | — | 0.5 | OEM-4-L | — | — | — |
| 11 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 12 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 13 | Analog Volt 1 | — | W53 | — | 0.5 | OEM-4-X | — | — | — |
| 14 | Analog Volt 3 | — | W55 | — | 0.5 | OEM-4-V | — | — | — |
| 15 | Analog Volt 5 | — | W57 | — | 0.5 | OEM-4-W | — | — | — |
| 16 | Analog Volt 7 | — | W66 | — | 0.5 | OEM-4-H | — | — | — |
| 17 | Analog Volt 9 | — | W68 | — | 0.5 | OEM-4-J | — | — | — |
| 18 | Analog Volt 11 | — | — | — | — | — | — | — | — |
| 19 | Thermistor 1 | — | — | — | — | — | — | — | — |
| 2 | Sensor ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | Coolant temp (CLT) | — | W58 | — | 0.5 | OEM-4-P | — | — | — |
| 21 | 5V supply #1 | — | — | — | — | — | — | — | — |
| 22 | 5V supply #2 | — | — | — | — | — | — | — | — |
| 23 | Sensor ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Analog Volt 2 | — | W54 | — | 0.5 | OEM-4-AE | — | — | — |
| 25 | Analog Volt 4 | — | W56 | — | 0.5 | OEM-4-AA | — | — | — |
| 26 | Analog Volt 6 | — | W60 | — | 0.5 | OEM-4-AD | — | — | — |
| 27 | Analog Volt 8 | — | W67 | — | 0.5 | OEM-4-I | — | — | — |
| 28 | Analog Volt 10 | — | — | — | — | — | — | — | — |
| 29 | Sensor ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Sensor ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Intake air temp (IAT) | — | W59 | — | 0.5 | OEM-4-N | — | — | — |
| 31 | Thermistor 4 | — | — | — | — | — | — | — | — |
| 32 | 5V supply #1 | — | — | — | — | — | — | — | — |
| 33 | 5V supply #2 | — | — | — | — | — | — | — | — |
| 34 | Knock 1 | — | W29 | — | 0.5 | OEM-4-M | — | — | — |
| 35 | Knock 2 | — | — | — | — | — | — | — | — |
| 4 | Sensor ground | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Sensor ground | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Sensor ground | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 9 | 5V supply #1 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W15 | — | 0.5 | PROTEUS-White35-1 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | PROTEUS-White35-2 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | PROTEUS-White35-23 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | PROTEUS-White35-29 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | PROTEUS-White35-3 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | PROTEUS-White35-4 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | PROTEUS-White35-5 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | PROTEUS-White35-6 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | PROTEUS-White35-7 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | PROTEUS-White35-8 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | PROTEUS-Black23-13 | — | — | — |
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 | PROTEUS-Black23-23 | — | — | — |
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 | PROTEUS-Black23-14 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | PROTEUS-Black23-19 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | PROTEUS-Black23-20 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | PROTEUS-Black35-17 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | PROTEUS-Black35-18 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | PROTEUS-Black35-24 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | PROTEUS-Black35-3 | Injector 1 | injector_out | YB | single_source |
| OEM-2-B | Cooling fan relay | low_side_out | PROTEUS-Black35-20 | Lowside 10 | low_side_out | RY | single_source |
| OEM-2-C | Condenser fan relay | low_side_out | PROTEUS-Black35-9 | Lowside 11 | low_side_out | LW | single_source |
| OEM-2-D | Injector 2 | injector_out | PROTEUS-Black35-15 | Injector 2 | injector_out | VG | single_source |
| OEM-2-E | EGR valve | low_side_out | PROTEUS-Black35-6 | Injector 6 | injector_out | Lg | single_source |
| OEM-2-F | EGR valve | low_side_out | PROTEUS-Black35-7 | Injector 7 | injector_out | WG | single_source |
| OEM-2-G | Injector 3 | injector_out | PROTEUS-Black35-4 | Injector 3 | injector_out | YR | single_source |
| OEM-2-H | EGR valve | low_side_out | PROTEUS-Black35-19 | Injector 8 | injector_out | PB | single_source |
| OEM-2-I | EGR valve | low_side_out | PROTEUS-Black35-8 | Injector 9 | injector_out | P | single_source |
| OEM-2-J | Injector 4 | injector_out | PROTEUS-Black35-16 | Injector 4 | injector_out | YG | single_source |
| OEM-2-K | A/C clutch relay | low_side_out | PROTEUS-Black35-21 | Lowside 12 | low_side_out | LB | single_source |
| OEM-2-L | NC | — | — | — | — | unverified | |
| OEM-2-M | Fuel pump relay | low_side_out | PROTEUS-Black35-10 | Lowside 13 | low_side_out | RW | single_source |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | PROTEUS-Black23-7 | ETB 1 positive | hbridge_out | BW | single_source |
| OEM-2-O | Fuel pump relay (non-immobiliser) | low_side_out | PROTEUS-Black35-12 | Lowside 15 | low_side_out | R | single_source |
| OEM-2-P | ISC valve +14V feed | power_in | PROTEUS-Black23-23 | Main relay feed | power_in | Or | single_source |
| OEM-2-Q | ISC valve low side | low_side_out | PROTEUS-Black35-5 | Injector 5 | injector_out | VR | single_source |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | PROTEUS-Black23-15 | ETB 2 positive | hbridge_out | WL | single_source |
| OEM-3-A | Power ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | B | single_source |
| OEM-3-B | Power ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | BR | single_source |
| OEM-3-C | Purge solenoid valve | low_side_out | PROTEUS-Black23-8 | ETB 2 negative | hbridge_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 | PROTEUS-Black35-35 | Ignition 1 | ignition_out | BrW | single_source |
| OEM-3-G | NC | — | — | — | — | unverified | |
| OEM-3-H | Main relay | low_side_out | PROTEUS-Black35-11 | Lowside 14 | low_side_out | LOr | single_source |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | PROTEUS-Black35-34 | Ignition 2 | ignition_out | BY | single_source |
| OEM-3-J | Front O2 heater | low_side_out | PROTEUS-Black35-23 | Lowside 16 | low_side_out | BOr | single_source |
| OEM-3-K | EVAP leak detection pump | low_side_out | — | — | — | YB | single_source |
| OEM-3-L | NC | — | — | — | — | unverified | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | GyR | single_source |
| OEM-3-N | NC | — | — | — | — | unverified | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | GOr | single_source |
| OEM-3-P | Rear O2 heater | low_side_out | PROTEUS-Black23-6 | ETB 1 negative | hbridge_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 | PROTEUS-Black23-10 | Digital 1 | digital_in | RB | single_source |
| OEM-3-T | Vehicle speed | digital_in | PROTEUS-Black23-2 | Digital 3 | digital_in | GR | single_source |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | BrR | single_source |
| OEM-3-V | Cam position (CMP) | trigger_in | PROTEUS-Black23-1 | Digital 2 | trigger_in | GyL | single_source |
| OEM-3-W | NC | — | — | — | — | unverified | |
| OEM-3-X | NC | — | — | — | — | unverified | |
| OEM-3-Y | Crank position (CKP) | trigger_in | PROTEUS-Black23-5 | VR 1 positive | trigger_in | VW | single_source |
| OEM-3-Z | NC | — | — | — | — | unverified | |
| OEM-4-A | Power ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | BL | single_source |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | PROTEUS-White35-25 | Analog Volt 4 | analog_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 | PROTEUS-White35-26 | Analog Volt 6 | analog_in | BrB | single_source |
| OEM-4-AE | Pressure sensor (Mazda: EGR boost sensor) | analog_in | PROTEUS-White35-24 | Analog Volt 2 | analog_in | LY | corroborated |
| OEM-4-AF | ECU power +14V (main relay) | power_in | PROTEUS-Black23-23 | Main relay feed | 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 | — | — | — | RG | single_source |
| OEM-4-B | Brake switch | digital_in | PROTEUS-Black23-3 | Digital 4 | digital_in | G | single_source |
| OEM-4-C | Power steering pressure switch | digital_in | PROTEUS-Black23-9 | Digital 5 | digital_in | Br | single_source |
| OEM-4-D | VVT oil-control solenoid +12V feed | power_in | PROTEUS-Black23-23 | Main relay feed | power_in | Y | single_source |
| OEM-4-E | Diagnostic (DLC TEN) (NA) | serial | — | — | — | LY | single_source |
| OEM-4-F | A/C request | digital_in | PROTEUS-Black23-11 | Digital 6 | digital_in | LgB | single_source |
| OEM-4-G | NC | — | — | — | — | unverified | |
| OEM-4-H | Neutral switch | digital_in | PROTEUS-White35-16 | Analog Volt 7 | analog_in | V | single_source |
| OEM-4-I | Clutch switch | digital_in | PROTEUS-White35-27 | Analog Volt 8 | analog_in | WG | single_source |
| OEM-4-J | VTCS vacuum switch | digital_in | PROTEUS-White35-17 | Analog Volt 9 | analog_in | Or | single_source |
| OEM-4-K | NC | — | — | — | — | unverified | |
| OEM-4-L | +5V sensor supply | vref | PROTEUS-White35-10 | 5V supply #2 | vref | LgR | single_source |
| OEM-4-M | Knock sensor | knock_in | PROTEUS-White35-34 | Knock 1 | knock_in | W | single_source |
| OEM-4-N | Intake air temperature (IAT) | temp_in | PROTEUS-White35-30 | Intake air temp (IAT) | temp_in | PL | single_source |
| OEM-4-O | Signal ground | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | BR | single_source |
| OEM-4-P | Coolant temperature (ECT) | temp_in | PROTEUS-White35-20 | Coolant temp (CLT) | temp_in | RL | single_source |
| OEM-4-Q | NC | — | — | — | — | unverified | |
| OEM-4-R | VVT oil-control solenoid (low-side control) | low_side_out | — | — | — | VY | corroborated |
| OEM-4-S | Ignition switch (IG1) sense | digital_in | PROTEUS-Black23-18 | Ignition switch 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 | PROTEUS-White35-14 | Analog Volt 3 | analog_in | GB | single_source |
| OEM-4-W | Front O2 signal | lambda_nb_in | PROTEUS-White35-15 | Analog Volt 5 | analog_in | L | single_source |
| OEM-4-X | Mass air flow (MAF) | analog_in | PROTEUS-White35-13 | Analog Volt 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 | PROTEUS-Black23-23 | 0.85 | no route | Main relay feed | — | |
| 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 | PROTEUS-Black23-14 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | no route | Power ground | — | |
| W11 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | no route | Power ground | — | |
| W12 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | no route | Power ground | — | |
| W13 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | no route | Power ground | — | |
| W14 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W15 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | no route | Sensor ground | — | |
| W16 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | no route | Sensor ground | — | |
| W17 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | no route | Sensor ground | — | |
| W18 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | no route | Sensor ground | — | |
| W19 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | no route | Sensor ground | — | |
| W20 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | no route | Sensor ground | — | |
| W21 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | no route | Sensor ground | — | |
| W22 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | no route | Sensor ground | — | |
| W23 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | no route | Sensor ground | — | |
| W24 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | no route | Sensor ground | — | |
| W25 | OEM-4-L | PROTEUS-White35-10 | 0.5 | no route | +5V sensor supply | — | |
| W26 | OEM-3-Y | PROTEUS-Black23-5 | 0.5 | no route | Crank position (CKP) | — | |
| W27 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | no route | VR 1 negative | — | |
| W28 | OEM-3-V | PROTEUS-Black23-1 | 0.5 | no route | Cam position (CMP) | — | |
| W29 | OEM-4-M | PROTEUS-White35-34 | 0.5 | no route | Knock sensor | — | |
| W30 | OEM-3-F | PROTEUS-Black35-35 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W31 | OEM-3-I | PROTEUS-Black35-34 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W32 | OEM-2-A | PROTEUS-Black35-3 | 0.5 | no route | Injector 1 | — | |
| W33 | OEM-2-D | PROTEUS-Black35-15 | 0.5 | no route | Injector 2 | — | |
| W34 | OEM-2-G | PROTEUS-Black35-4 | 0.5 | no route | Injector 3 | — | |
| W35 | OEM-2-J | PROTEUS-Black35-16 | 0.5 | no route | Injector 4 | — | |
| W36 | OEM-4-S | PROTEUS-Black23-18 | 0.5 | no route | Ignition switch (IG1) sense | — | |
| W37 | OEM-2-B | PROTEUS-Black35-20 | 0.5 | no route | Cooling fan relay | — | |
| W38 | OEM-2-C | PROTEUS-Black35-9 | 0.5 | no route | Condenser fan relay | — | |
| W39 | OEM-2-K | PROTEUS-Black35-21 | 0.5 | no route | A/C clutch relay | — | |
| W40 | OEM-2-M | PROTEUS-Black35-10 | 0.5 | no route | Fuel pump relay | — | |
| W41 | OEM-3-H | PROTEUS-Black35-11 | 0.5 | no route | Main relay | — | |
| W42 | OEM-2-O | PROTEUS-Black35-12 | 0.5 | no route | Fuel pump relay (non-immobiliser) | — | |
| W43 | OEM-3-J | PROTEUS-Black35-23 | 0.5 | no route | Front O2 heater | — | |
| W44 | OEM-3-P | PROTEUS-Black23-6 | 0.5 | no route | Rear O2 heater | — | |
| W45 | OEM-2-Q | PROTEUS-Black35-5 | 0.5 | no route | ISC valve low side | — | |
| W46 | OEM-2-E | PROTEUS-Black35-6 | 0.5 | no route | EGR valve | — | |
| W47 | OEM-2-F | PROTEUS-Black35-7 | 0.5 | no route | EGR valve | — | |
| W48 | OEM-2-H | PROTEUS-Black35-19 | 0.5 | no route | EGR valve | — | |
| W49 | OEM-2-I | PROTEUS-Black35-8 | 0.5 | no route | EGR valve | — | |
| W50 | OEM-2-N | PROTEUS-Black23-7 | 0.5 | no route | VTCS solenoid (intake butterflies) | — | |
| W51 | OEM-2-R | PROTEUS-Black23-15 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W52 | OEM-3-C | PROTEUS-Black23-8 | 0.5 | no route | Purge solenoid valve | — | |
| W53 | OEM-4-X | PROTEUS-White35-13 | 0.5 | no route | Mass air flow (MAF) | — | |
| W54 | OEM-4-AE | PROTEUS-White35-24 | 0.5 | no route | Pressure sensor (Mazda: EGR boost sensor) | — | |
| W55 | OEM-4-V | PROTEUS-White35-14 | 0.5 | no route | Throttle position (TPS) | — | |
| W56 | OEM-4-AA | PROTEUS-White35-25 | 0.5 | no route | Rear O2 signal | — | |
| W57 | OEM-4-W | PROTEUS-White35-15 | 0.5 | no route | Front O2 signal | — | |
| W58 | OEM-4-P | PROTEUS-White35-20 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W59 | OEM-4-N | PROTEUS-White35-30 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W60 | OEM-4-AD | PROTEUS-White35-26 | 0.5 | no route | Fuel level | — | |
| W61 | OEM-3-T | PROTEUS-Black23-2 | 0.5 | no route | Vehicle speed | — | |
| W62 | OEM-3-S | PROTEUS-Black23-10 | 0.5 | no route | Immobiliser | — | |
| W63 | OEM-4-B | PROTEUS-Black23-3 | 0.5 | no route | Brake switch | — | |
| W64 | OEM-4-C | PROTEUS-Black23-9 | 0.5 | no route | Power steering pressure switch | — | |
| W65 | OEM-4-F | PROTEUS-Black23-11 | 0.5 | no route | A/C request | — | |
| W66 | OEM-4-H | PROTEUS-White35-16 | 0.5 | no route | Neutral switch | — | |
| W67 | OEM-4-I | PROTEUS-White35-27 | 0.5 | no route | Clutch switch | — | |
| W68 | OEM-4-J | PROTEUS-White35-17 | 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 (14)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-2-N ↔ PROTEUS-Black23-7 | OEM-2-N "VTCS solenoid (intake butterflies)" [low_side_out] is wired to PROTEUS-Black23-7 "ETB 1 positive" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-R ↔ PROTEUS-Black23-15 | OEM-2-R "Malfunction indicator lamp (MIL)" [low_side_out] is wired to PROTEUS-Black23-15 "ETB 2 positive" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-C ↔ PROTEUS-Black23-8 | OEM-3-C "Purge solenoid valve" [low_side_out] is wired to PROTEUS-Black23-8 "ETB 2 negative" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-P ↔ PROTEUS-Black23-6 | OEM-3-P "Rear O2 heater" [low_side_out] is wired to PROTEUS-Black23-6 "ETB 1 negative" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-4-H ↔ PROTEUS-White35-16 | OEM-4-H "Neutral switch" [digital_in] is wired to PROTEUS-White35-16 "Analog Volt 7" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-4-I ↔ PROTEUS-White35-27 | OEM-4-I "Clutch switch" [digital_in] is wired to PROTEUS-White35-27 "Analog Volt 8" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-4-J ↔ PROTEUS-White35-17 | OEM-4-J "VTCS vacuum switch" [digital_in] is wired to PROTEUS-White35-17 "Analog Volt 9" [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-2-E ↔ PROTEUS-Black35-6 | OEM-2-E "EGR valve" [low_side_out] is wired to PROTEUS-Black35-6 "Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-F ↔ PROTEUS-Black35-7 | OEM-2-F "EGR valve" [low_side_out] is wired to PROTEUS-Black35-7 "Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-H ↔ PROTEUS-Black35-19 | OEM-2-H "EGR valve" [low_side_out] is wired to PROTEUS-Black35-19 "Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-I ↔ PROTEUS-Black35-8 | OEM-2-I "EGR valve" [low_side_out] is wired to PROTEUS-Black35-8 "Injector 9" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-Q ↔ PROTEUS-Black35-5 | OEM-2-Q "ISC valve low side" [low_side_out] is wired to PROTEUS-Black35-5 "Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | PROTEUS-White35-7 ↔ PROTEUS-Black23-13 | PROTEUS-White35-7 "Sensor ground" [sensor_ground] is wired to PROTEUS-Black23-13 "VR 1 negative" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 12 optional OEM pins are not mapped: OEM-3-D EGR boost solenoid; OEM-3-K EVAP leak detection pump; OEM-3-M Alternator control; OEM-3-O Tachometer output; OEM-3-Q Data link connector (K-line); OEM-3-U Charge lamp; OEM-4-AC TCM (automatic only); OEM-4-AH EVAP leak detection pump solenoid valve; OEM-4-E Diagnostic (DLC TEN) (NA); OEM-4-R VVT oil-control solenoid (low-side control); 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: rusEFI Proteus has no battery-constant input; not needed - OEM-3 K: EVAP leak detection pump: no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-3 M: Alternator control: no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-3 U: Charge lamp: no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-4 AH: EVAP leak detection pump solenoid valve: no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-4 R: VVT oil-control solenoid (low-side control): no free low_side/ls_hs/injector/hbridge on rusEFI Proteus - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on rusEFI Proteus - OEM-3 Q: Data link connector (K-line): no free k_line on rusEFI Proteus - OEM-4 E: Diagnostic (DLC TEN) (NA): no free k_line on rusEFI Proteus - 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 | 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 |
| 4 | vendor_doc | rusEFI Proteus — board connector definitions (Black35 / White35 / Black23) | https://github.com/rusefi/rusefi/tree/master/firmware/config/boards/proteus/connectors | archive | 2026-10-05 | 738a2ea934c0 |
| 2 | expert_report | Justin Barrera — Miata NA/NB wiring corrections | — | — | — | — |