MX-5 Miata Mazdaspeed 2004-05 (BP-ZET turbo, no VVT) → AMP EFI MS3Pro EVO+ HC (auto)
MX-5 Miata Mazdaspeed 2004-05 (BP-ZET turbo, no VVT) — AMP EFI — MS3Pro EVO+ HC
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-17
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.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 72 wires · 11 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 | SP-14V-1 | MS3PROEVOHC-A-35 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | MS3PROEVOHC-B-3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MS3PROEVOHC-B-5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MS3PROEVOHC-B-7 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MS3PROEVOHC-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-0V-1 | MS3PROEVOHC-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-0V-1 | MS3PROEVOHC-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MS3PROEVOHC-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | MS3PROEVOHC-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MS3PROEVOHC-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MS3PROEVOHC-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MS3PROEVOHC-C-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-4-L | MS3PROEVOHC-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-3-Y | MS3PROEVOHC-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | MS3PROEVOHC-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-3-V | MS3PROEVOHC-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | MS3PROEVOHC-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-4-M | MS3PROEVOHC-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-3-F | MS3PROEVOHC-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-I | MS3PROEVOHC-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-2-A | MS3PROEVOHC-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-2-D | MS3PROEVOHC-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-2-G | MS3PROEVOHC-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-2-J | MS3PROEVOHC-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-4-X | MS3PROEVOHC-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-4-V | MS3PROEVOHC-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-4-P | MS3PROEVOHC-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-4-S | MS3PROEVOHC-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-B | MS3PROEVOHC-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-C | MS3PROEVOHC-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-K | MS3PROEVOHC-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-M | MS3PROEVOHC-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-3-H | MS3PROEVOHC-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-2-O | MS3PROEVOHC-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-4-D | RLY1-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | SP-14V-1 | RLY1-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | RLY1-R-COIL- | MS3PROEVOHC-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-4-E | RLY2-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | SP-14V-1 | RLY2-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | SP-14V-1 | RLY2-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | RLY2-R-COIL- | MS3PROEVOHC-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-3-J | MS3PROEVOHC-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-P | MS3PROEVOHC-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-2-Q | MS3PROEVOHC-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-2-E | MS3PROEVOHC-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-2-F | MS3PROEVOHC-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-2-H | MS3PROEVOHC-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-2-I | MS3PROEVOHC-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-2-N | MS3PROEVOHC-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-2-R | MS3PROEVOHC-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-3-O | MS3PROEVOHC-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-4-AE | MS3PROEVOHC-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-4-AA | MS3PROEVOHC-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-4-W | MS3PROEVOHC-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-4-R | MS3PROEVOHC-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-4-N | MS3PROEVOHC-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-4-AD | MS3PROEVOHC-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-3-T | MS3PROEVOHC-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-3-S | MS3PROEVOHC-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-4-B | MS3PROEVOHC-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-4-C | MS3PROEVOHC-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-4-F | MS3PROEVOHC-C-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-4-H | MS3PROEVOHC-C-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-4-I | MS3PROEVOHC-B-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W72 | OEM-4-J | MS3PROEVOHC-B-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
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 | MS3PROEVOHC-A-35 | MS3PROEVOHC-A-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MS3PROEVOHC-A-35 | MS3PROEVOHC-B-3 | open (OL) | +12 V supply must not touch power ground | |
| 3 | MS3PROEVOHC-A-8 | MS3PROEVOHC-A-13 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 4 | RLY1-R-OUT | MS3PROEVOHC-A-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 5 | RLY2-R-OUT | MS3PROEVOHC-A-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 6 | MS3PROEVOHC-A-35 | MS3PROEVOHC-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 7 | MS3PROEVOHC-B-3 | MS3PROEVOHC-A-8 | open (OL) | power ground must not touch 5 V sensor reference | |
| 8 | MS3PROEVOHC-B-3 | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 9 | MS3PROEVOHC-B-3 | RLY2-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 10 | RLY1-R-OUT | MS3PROEVOHC-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 11 | RLY2-R-OUT | MS3PROEVOHC-A-8 | 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
MS3PROEVOHC-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | High current out 1 | — | W49 | — | 0.5 | OEM-3-J | — | — | — |
| 10 | MAT in | — | W62 | — | 0.5 | OEM-4-R | — | — | — |
| 11 | CLT in | — | W33 | — | 0.5 | OEM-4-P | — | — | — |
| 12 | Analog In 6 | — | — | — | — | — | — | — | — |
| 13 | Logic Ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W36 | — | 0.5 | OEM-2-C | — | — | — |
| 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 | — | W31 | — | 0.5 | OEM-4-X | — | — | — |
| 2 | High current out 2 | — | W50 | — | 0.5 | OEM-3-P | — | — | — |
| 20 | Analog in 2 | — | W59 | — | 0.5 | OEM-4-AE | — | — | — |
| 21 | Analog in 3 | — | W61 | — | 0.5 | OEM-4-W | — | — | — |
| 22 | Analog In 4 | — | W63 | — | 0.5 | OEM-4-N | — | — | — |
| 23 | Analog In 5 | — | W64 | — | 0.5 | OEM-4-AD | — | — | — |
| 24 | Tach out | — | W58 | — | 0.5 | OEM-3-O | — | — | — |
| 25 | O2 in | — | W60 | — | 0.5 | OEM-4-AA | — | — | — |
| 26 | CMP+ | — | W22 | — | 0.5 | OEM-3-V | — | — | — |
| 27 | CMP− | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Fuel pump relay out | — | W35 | — | 0.5 | OEM-2-B | — | — | — |
| 29 | PWM out 2 | — | W38 | — | 0.5 | OEM-2-M | — | — | — |
| 3 | Injector out J | — | W27 | — | 0.5 | OEM-2-A | — | — | — |
| 30 | PWM out 3 | — | W40 | — | 0.5 | OEM-2-O | — | — | — |
| 31 | Knock in 1 | — | W24 | — | 0.5 | OEM-4-M | — | — | — |
| 32 | Digital switched in 1 | — | W66 | — | 0.5 | OEM-3-S | — | — | — |
| 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-2-D | — | — | — |
| 5 | High current out 3 | — | W51 | — | 0.5 | OEM-2-Q | — | — | — |
| 6 | CKP+ | — | W20 | — | 0.5 | OEM-3-Y | — | — | — |
| 7 | Knock In 2 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out | — | W19 | — | 0.5 | OEM-4-L | — | — | — |
| 9 | TPS in | — | W32 | — | 0.5 | OEM-4-V | — | — | — |
MS3PROEVOHC-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | W29 | — | 0.5 | OEM-2-G | — | — | — |
| 10 | Injector out F | — | W30 | — | 0.5 | OEM-2-J | — | — | — |
| 11 | Injector out G | — | W52 | — | 0.5 | OEM-2-E | — | — | — |
| 12 | Injector out H | — | W53 | — | 0.5 | OEM-2-F | — | — | — |
| 13 | Spark out G | — | W25 | — | 0.5 | OEM-3-F | — | — | — |
| 14 | Spark out E | — | W26 | — | 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 | — | W34 | — | 0.5 | OEM-4-S | — | — | — |
| 2 | Injector out B | — | W54 | — | 0.5 | OEM-2-H | — | — | — |
| 20 | Digital switched in 2 | — | W67 | — | 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) | — | W65 | — | 0.5 | OEM-3-T | — | — | — |
| 29 | Digital switched in 3 | — | W68 | — | 0.5 | OEM-4-C | — | — | — |
| 3 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 30 | Stepper IAC out 1B | — | — | — | — | — | — | — | — |
| 31 | Stepper IAC out 1A | — | — | — | — | — | — | — | — |
| 32 | Stepper IAC out 2A | — | — | — | — | — | — | — | — |
| 33 | Stepper IAC out 2B | — | — | — | — | — | — | — | — |
| 34 | Digital Frequency in 1 (VR+) | — | W71 | — | 0.5 | OEM-4-I | — | — | — |
| 35 | Digital Frequency in 1 (VR−) | — | W72 | — | 0.5 | OEM-4-J | — | — | — |
| 4 | Injector out C | — | W55 | — | 0.5 | OEM-2-I | — | — | — |
| 5 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | W56 | — | 0.5 | OEM-2-N | — | — | — |
| 7 | Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | W57 | — | 0.5 | OEM-2-R | — | — | — |
| 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 | — | W48 | — | 0.5 | RLY2-R-COIL- | — | — | — |
| 10 | Digital switched in 5 | — | W70 | — | 0.5 | OEM-4-H | — | — | — |
| 11 | Digital switched in 4 | — | W69 | — | 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 | — | 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 | — | W44 | — | 0.5 | RLY1-R-COIL- | — | — | — |
| 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 | — | W39 | — | 0.5 | OEM-3-H | — | — | — |
| 4 | Digital out 1 | — | W37 | — | 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 | — | W27 | — | 0.5 | MS3PROEVOHC-A-3 | — | — | — |
| B | Cooling fan relay | — | W35 | — | 0.5 | MS3PROEVOHC-A-28 | — | — | — |
| C | Condenser fan relay | — | W36 | — | 0.5 | MS3PROEVOHC-A-14 | — | — | — |
| D | Injector 2 | — | W28 | — | 0.5 | MS3PROEVOHC-A-4 | — | — | — |
| E | EGR valve | — | W52 | — | 0.5 | MS3PROEVOHC-B-11 | — | — | — |
| F | EGR valve | — | W53 | — | 0.5 | MS3PROEVOHC-B-12 | — | — | — |
| G | Injector 3 | — | W29 | — | 0.5 | MS3PROEVOHC-B-1 | — | — | — |
| H | EGR valve | — | W54 | — | 0.5 | MS3PROEVOHC-B-2 | — | — | — |
| I | EGR valve | — | W55 | — | 0.5 | MS3PROEVOHC-B-4 | — | — | — |
| J | Injector 4 | — | W30 | — | 0.5 | MS3PROEVOHC-B-10 | — | — | — |
| K | A/C clutch relay | — | W37 | — | 0.5 | MS3PROEVOHC-C-4 | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Fuel pump relay | — | W38 | — | 0.5 | MS3PROEVOHC-A-29 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | W56 | — | 0.5 | MS3PROEVOHC-B-6 | — | — | — |
| O | Fuel pump relay (non-immobiliser) | — | W40 | — | 0.5 | MS3PROEVOHC-A-30 | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W51 | — | 0.5 | MS3PROEVOHC-A-5 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | W57 | — | 0.5 | MS3PROEVOHC-B-8 | — | — | — |
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 | Purge solenoid valve | — | — | — | — | — | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | NC | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W25 | — | 0.5 | MS3PROEVOHC-B-13 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Main relay | — | W39 | — | 0.5 | MS3PROEVOHC-C-3 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W26 | — | 0.5 | MS3PROEVOHC-B-14 | — | — | — |
| J | Front O2 heater | — | W49 | — | 0.5 | MS3PROEVOHC-A-1 | — | — | — |
| K | EVAP leak detection pump | — | — | — | — | — | — | — | — |
| L | NC | — | — | — | — | — | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| N | NC | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | W58 | — | 0.5 | MS3PROEVOHC-A-24 | — | — | — |
| P | Rear O2 heater | — | W50 | — | 0.5 | MS3PROEVOHC-A-2 | — | — | — |
| Q | Data link connector (K-line) | — | — | — | — | — | — | — | — |
| R | NC | — | — | — | — | — | — | — | — |
| S | Immobiliser | — | W66 | — | 0.5 | MS3PROEVOHC-A-32 | — | — | — |
| T | Vehicle speed | — | W65 | — | 0.5 | MS3PROEVOHC-B-28 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W22 | — | 0.5 | MS3PROEVOHC-A-26 | — | — | — |
| W | NC | — | — | — | — | — | — | — | — |
| X | NC | — | — | — | — | — | — | — | — |
| Y | Crank position (CKP) | — | W20 | — | 0.5 | MS3PROEVOHC-A-6 | — | — | — |
| Z | NC | — | — | — | — | — | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W60 | — | 0.5 | MS3PROEVOHC-A-25 | — | — | — |
| AB | NC | — | — | — | — | — | — | — | — |
| AC | Data link connector (DLC TEN, turbo) | — | — | — | — | — | — | — | — |
| AD | Fuel level | — | W64 | — | 0.5 | MS3PROEVOHC-A-23 | — | — | — |
| AE | BARO/MAP sensor (turbo boost pressure) | — | W59 | — | 0.5 | MS3PROEVOHC-A-20 | — | — | — |
| 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 | — | W67 | — | 0.5 | MS3PROEVOHC-B-20 | — | — | — |
| C | Power steering pressure switch | — | W68 | — | 0.5 | MS3PROEVOHC-B-29 | — | — | — |
| D | Boost control solenoid (turbo) | — | W41 | — | 0.5 | RLY1-R-OUT | — | — | — |
| E | Boost control solenoid (turbo) | — | W45 | — | 0.5 | RLY2-R-OUT | — | — | — |
| F | A/C request | — | W69 | — | 0.5 | MS3PROEVOHC-C-11 | — | — | — |
| G | NC | — | — | — | — | — | — | — | — |
| H | Neutral switch | — | W70 | — | 0.5 | MS3PROEVOHC-C-10 | — | — | — |
| I | Clutch switch | — | W71 | — | 0.5 | MS3PROEVOHC-B-34 | — | — | — |
| J | VTCS vacuum switch | — | W72 | — | 0.5 | MS3PROEVOHC-B-35 | — | — | — |
| K | NC | — | — | — | — | — | — | — | — |
| L | +5V sensor supply | — | W19 | — | 0.5 | MS3PROEVOHC-A-8 | — | — | — |
| M | Knock sensor | — | W24 | — | 0.5 | MS3PROEVOHC-A-31 | — | — | — |
| N | Intake air temperature (IAT) | — | W63 | — | 0.5 | MS3PROEVOHC-A-22 | — | — | — |
| O | Signal ground | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W33 | — | 0.5 | MS3PROEVOHC-A-11 | — | — | — |
| Q | NC | — | — | — | — | — | — | — | — |
| R | Intake air temperature 2 (IAT2, turbo) | — | W62 | — | 0.5 | MS3PROEVOHC-A-10 | — | — | — |
| S | Ignition switch (IG1) sense | — | W34 | — | 0.5 | MS3PROEVOHC-B-19 | — | — | — |
| T | Generator output voltage (terminal P) | — | — | — | — | — | — | — | — |
| U | NC | — | — | — | — | — | — | — | — |
| V | Throttle position (TPS) | — | W32 | — | 0.5 | MS3PROEVOHC-A-9 | — | — | — |
| W | Front O2 signal | — | W61 | — | 0.5 | MS3PROEVOHC-A-21 | — | — | — |
| X | Mass air flow (MAF) | — | W31 | — | 0.5 | MS3PROEVOHC-A-19 | — | — | — |
| Y | NC | — | — | — | — | — | — | — | — |
| Z | TCM (automatic only) | — | — | — | — | — | — | — | — |
RLY1-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W43 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W44 | — | 0.5 | MS3PROEVOHC-C-2 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W42 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W41 | — | 0.5 | OEM-4-D | — | — | — |
RLY2-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W47 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W48 | — | 0.5 | MS3PROEVOHC-C-1 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W46 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W45 | — | 0.5 | OEM-4-E | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-4-O | — | — | — |
| 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-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MS3PROEVOHC-A-35 | — | — | — |
| 1 | — | — | W42 | — | 0.5 | RLY1-R-IN | — | — | — |
| 1 | — | — | W43 | — | 0.5 | RLY1-R-COIL+ | — | — | — |
| 1 | — | — | W46 | — | 0.5 | RLY2-R-IN | — | — | — |
| 1 | — | — | W47 | — | 0.5 | RLY2-R-COIL+ | — | — | — |
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-4-A | — | — | — |
| 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-2-A | Injector 1 | injector_out | MS3PROEVOHC-A-3 | Injector out J | injector_out | corroborated | |
| OEM-2-B | Cooling fan relay | low_side_out | MS3PROEVOHC-A-28 | Fuel pump relay out | low_side_out | corroborated | |
| OEM-2-C | Condenser fan relay | low_side_out | MS3PROEVOHC-A-14 | PWM / Idle Out 1 | low_side_out | corroborated | |
| OEM-2-D | Injector 2 | injector_out | MS3PROEVOHC-A-4 | Injector out I | injector_out | corroborated | |
| OEM-2-E | EGR valve | low_side_out | MS3PROEVOHC-B-11 | Injector out G | injector_out | corroborated | |
| OEM-2-F | EGR valve | low_side_out | MS3PROEVOHC-B-12 | Injector out H | injector_out | corroborated | |
| OEM-2-G | Injector 3 | injector_out | MS3PROEVOHC-B-1 | Injector out A | injector_out | corroborated | |
| OEM-2-H | EGR valve | low_side_out | MS3PROEVOHC-B-2 | Injector out B | injector_out | corroborated | |
| OEM-2-I | EGR valve | low_side_out | MS3PROEVOHC-B-4 | Injector out C | injector_out | corroborated | |
| OEM-2-J | Injector 4 | injector_out | MS3PROEVOHC-B-10 | Injector out F | injector_out | corroborated | |
| OEM-2-K | A/C clutch relay | low_side_out | MS3PROEVOHC-C-4 | Digital out 1 | low_side_out | corroborated | |
| OEM-2-L | NC | — | — | — | — | single_source | |
| OEM-2-M | Fuel pump relay | low_side_out | MS3PROEVOHC-A-29 | PWM out 2 | low_side_out | corroborated | |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | MS3PROEVOHC-B-6 | Injector out D | injector_out | corroborated | |
| OEM-2-O | Fuel pump relay (non-immobiliser) | low_side_out | MS3PROEVOHC-A-30 | PWM out 3 | low_side_out | corroborated | |
| OEM-2-P | ISC valve +14V feed | power_in | MS3PROEVOHC-A-35 + RLY1-R-COIL+ + RLY1-R-IN + RLY2-R-COIL+ + RLY2-R-IN | 12V+ switched power in + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | corroborated | |
| OEM-2-Q | ISC valve low side | low_side_out | MS3PROEVOHC-A-5 | High current out 3 | low_side_out | corroborated | |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | MS3PROEVOHC-B-8 | Injector out E | injector_out | corroborated | |
| OEM-3-A | Power ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-3-B | Power ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-3-C | Purge solenoid valve | low_side_out | — | — | — | corroborated | |
| OEM-3-D | EGR boost solenoid | — | — | — | — | conflict | |
| OEM-3-E | NC | — | — | — | — | single_source | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | MS3PROEVOHC-B-13 | Spark out G | ignition_out | corroborated | |
| OEM-3-G | NC | — | — | — | — | single_source | |
| OEM-3-H | Main relay | low_side_out | MS3PROEVOHC-C-3 | Digital out 2 | low_side_out | corroborated | |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | MS3PROEVOHC-B-14 | Spark out E | ignition_out | corroborated | |
| OEM-3-J | Front O2 heater | low_side_out | MS3PROEVOHC-A-1 | High current out 1 | low_side_out | corroborated | |
| OEM-3-K | EVAP leak detection pump | low_side_out | — | — | — | corroborated | |
| OEM-3-L | NC | — | — | — | — | single_source | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | corroborated | |
| OEM-3-N | NC | — | — | — | — | single_source | |
| OEM-3-O | Tachometer output | tacho_out | MS3PROEVOHC-A-24 | Tach out | tacho_out | corroborated | |
| OEM-3-P | Rear O2 heater | low_side_out | MS3PROEVOHC-A-2 | High current out 2 | low_side_out | corroborated | |
| OEM-3-Q | Data link connector (K-line) | serial | — | — | — | corroborated | |
| OEM-3-R | NC | — | — | — | — | single_source | |
| OEM-3-S | Immobiliser | digital_in | MS3PROEVOHC-A-32 | Digital switched in 1 | digital_in | corroborated | |
| OEM-3-T | Vehicle speed | digital_in | MS3PROEVOHC-B-28 | Digital frequency in 1 (unconditioned) | digital_in | corroborated | |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | corroborated | |
| OEM-3-V | Cam position (CMP) | trigger_in | MS3PROEVOHC-A-26 | CMP+ | trigger_in | corroborated | |
| OEM-3-W | NC | — | — | — | — | single_source | |
| OEM-3-X | NC | — | — | — | — | single_source | |
| OEM-3-Y | Crank position (CKP) | trigger_in | MS3PROEVOHC-A-6 | CKP+ | trigger_in | corroborated | |
| OEM-3-Z | NC | — | — | — | — | single_source | |
| OEM-4-A | Power ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-4-AA | Rear O2 signal | lambda_nb_in | MS3PROEVOHC-A-25 | O2 in | lambda_nb_in | corroborated | |
| OEM-4-AB | NC | — | — | — | — | single_source | |
| OEM-4-AC | Data link connector (DLC TEN, turbo) | serial | — | — | — | BrY | single_source |
| OEM-4-AD | Fuel level | analog_in | MS3PROEVOHC-A-23 | Analog In 5 | analog_in | corroborated | |
| OEM-4-AE | BARO/MAP sensor (turbo boost pressure) | analog_in | MS3PROEVOHC-A-20 | Analog in 2 | analog_in | LY | single_source |
| OEM-4-AF | ECU power +14V (main relay) | power_in | MS3PROEVOHC-A-35 + RLY1-R-COIL+ + RLY1-R-IN + RLY2-R-COIL+ + RLY2-R-IN | 12V+ switched power in + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | corroborated | |
| OEM-4-AG | Constant +12V | power_in | — | — | — | corroborated | |
| OEM-4-AH | EVAP leak detection pump solenoid valve | low_side_out | — | — | — | corroborated | |
| OEM-4-B | Brake switch | digital_in | MS3PROEVOHC-B-20 | Digital switched in 2 | digital_in | corroborated | |
| OEM-4-C | Power steering pressure switch | digital_in | MS3PROEVOHC-B-29 | Digital switched in 3 | digital_in | corroborated | |
| OEM-4-D | Boost control solenoid (turbo) | high_side_out | RLY1-R-OUT | Relay contact output (switched +12 V to load) | power_out | Y | single_source |
| OEM-4-E | Boost control solenoid (turbo) | high_side_out | RLY2-R-OUT | Relay contact output (switched +12 V to load) | power_out | Y | single_source |
| OEM-4-F | A/C request | digital_in | MS3PROEVOHC-C-11 | Digital switched in 4 | digital_in | corroborated | |
| OEM-4-G | NC | — | — | — | — | single_source | |
| OEM-4-H | Neutral switch | digital_in | MS3PROEVOHC-C-10 | Digital switched in 5 | digital_in | corroborated | |
| OEM-4-I | Clutch switch | digital_in | MS3PROEVOHC-B-34 | Digital Frequency in 1 (VR+) | digital_in | corroborated | |
| OEM-4-J | VTCS vacuum switch | digital_in | MS3PROEVOHC-B-35 | Digital Frequency in 1 (VR−) | digital_in | corroborated | |
| OEM-4-K | NC | — | — | — | — | single_source | |
| OEM-4-L | +5V sensor supply | vref | MS3PROEVOHC-A-8 | 5V+ VREF out | vref | corroborated | |
| OEM-4-M | Knock sensor | knock_in | MS3PROEVOHC-A-31 | Knock in 1 | knock_in | corroborated | |
| OEM-4-N | Intake air temperature (IAT) | temp_in | MS3PROEVOHC-A-22 | Analog In 4 | analog_in | corroborated | |
| OEM-4-O | 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 | corroborated | |
| OEM-4-P | Coolant temperature (ECT) | temp_in | MS3PROEVOHC-A-11 | CLT in | temp_in | corroborated | |
| OEM-4-Q | NC | — | — | — | — | single_source | |
| OEM-4-R | Intake air temperature 2 (IAT2, turbo) | temp_in | MS3PROEVOHC-A-10 | MAT in | temp_in | VY | single_source |
| OEM-4-S | Ignition switch (IG1) sense | digital_in | MS3PROEVOHC-B-19 | Digital switched 12V in | digital_in | corroborated | |
| OEM-4-T | Generator output voltage (terminal P) | — | — | — | — | corroborated | |
| OEM-4-U | NC | — | — | — | — | single_source | |
| OEM-4-V | Throttle position (TPS) | analog_in | MS3PROEVOHC-A-9 | TPS in | analog_in | corroborated | |
| OEM-4-W | Front O2 signal | lambda_nb_in | MS3PROEVOHC-A-21 | Analog in 3 | analog_in | corroborated | |
| OEM-4-X | Mass air flow (MAF) | analog_in | MS3PROEVOHC-A-19 | Analog in 1 | analog_in | corroborated | |
| OEM-4-Y | NC | — | — | — | — | single_source | |
| OEM-4-Z | TCM (automatic only) | — | — | — | — | corroborated |
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 | 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-4-A | 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-4-O | 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-4-L | MS3PROEVOHC-A-8 | 0.5 | no route | +5V sensor supply | — | |
| W20 | OEM-3-Y | MS3PROEVOHC-A-6 | 0.5 | no route | Crank position (CKP) | — | |
| W21 | SP-0V-1 | MS3PROEVOHC-A-15 | 0.5 | no route | CKP− | — | |
| W22 | OEM-3-V | MS3PROEVOHC-A-26 | 0.5 | no route | Cam position (CMP) | — | |
| W23 | SP-0V-1 | MS3PROEVOHC-A-27 | 0.5 | no route | CMP− | — | |
| W24 | OEM-4-M | MS3PROEVOHC-A-31 | 0.5 | no route | Knock sensor | — | |
| W25 | OEM-3-F | MS3PROEVOHC-B-13 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W26 | OEM-3-I | MS3PROEVOHC-B-14 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W27 | OEM-2-A | MS3PROEVOHC-A-3 | 0.5 | no route | Injector 1 | — | |
| W28 | OEM-2-D | MS3PROEVOHC-A-4 | 0.5 | no route | Injector 2 | — | |
| W29 | OEM-2-G | MS3PROEVOHC-B-1 | 0.5 | no route | Injector 3 | — | |
| W30 | OEM-2-J | MS3PROEVOHC-B-10 | 0.5 | no route | Injector 4 | — | |
| W31 | OEM-4-X | MS3PROEVOHC-A-19 | 0.5 | no route | Mass air flow (MAF) | — | |
| W32 | OEM-4-V | MS3PROEVOHC-A-9 | 0.5 | no route | Throttle position (TPS) | — | |
| W33 | OEM-4-P | MS3PROEVOHC-A-11 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W34 | OEM-4-S | MS3PROEVOHC-B-19 | 0.5 | no route | Ignition switch (IG1) sense | — | |
| W35 | OEM-2-B | MS3PROEVOHC-A-28 | 0.5 | no route | Cooling fan relay | — | |
| W36 | OEM-2-C | MS3PROEVOHC-A-14 | 0.5 | no route | Condenser fan relay | — | |
| W37 | OEM-2-K | MS3PROEVOHC-C-4 | 0.5 | no route | A/C clutch relay | — | |
| W38 | OEM-2-M | MS3PROEVOHC-A-29 | 0.5 | no route | Fuel pump relay | — | |
| W39 | OEM-3-H | MS3PROEVOHC-C-3 | 0.5 | no route | Main relay | — | |
| W40 | OEM-2-O | MS3PROEVOHC-A-30 | 0.5 | no route | Fuel pump relay (non-immobiliser) | — | |
| W41 | OEM-4-D | RLY1-R-OUT | 0.5 | no route | Boost control solenoid (turbo) | — | |
| W42 | SP-14V-1 | RLY1-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W43 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W44 | RLY1-R-COIL- | MS3PROEVOHC-C-2 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W45 | OEM-4-E | RLY2-R-OUT | 0.5 | no route | Boost control solenoid (turbo) | — | |
| W46 | SP-14V-1 | RLY2-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W47 | SP-14V-1 | RLY2-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W48 | RLY2-R-COIL- | MS3PROEVOHC-C-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W49 | OEM-3-J | MS3PROEVOHC-A-1 | 0.5 | no route | Front O2 heater | — | |
| W50 | OEM-3-P | MS3PROEVOHC-A-2 | 0.5 | no route | Rear O2 heater | — | |
| W51 | OEM-2-Q | MS3PROEVOHC-A-5 | 0.5 | no route | ISC valve low side | — | |
| W52 | OEM-2-E | MS3PROEVOHC-B-11 | 0.5 | no route | EGR valve | — | |
| W53 | OEM-2-F | MS3PROEVOHC-B-12 | 0.5 | no route | EGR valve | — | |
| W54 | OEM-2-H | MS3PROEVOHC-B-2 | 0.5 | no route | EGR valve | — | |
| W55 | OEM-2-I | MS3PROEVOHC-B-4 | 0.5 | no route | EGR valve | — | |
| W56 | OEM-2-N | MS3PROEVOHC-B-6 | 0.5 | no route | VTCS solenoid (intake butterflies) | — | |
| W57 | OEM-2-R | MS3PROEVOHC-B-8 | 0.5 | no route | Malfunction indicator lamp (MIL) | — | |
| W58 | OEM-3-O | MS3PROEVOHC-A-24 | 0.5 | no route | Tachometer output | — | |
| W59 | OEM-4-AE | MS3PROEVOHC-A-20 | 0.5 | no route | BARO/MAP sensor (turbo boost pressure) | — | |
| W60 | OEM-4-AA | MS3PROEVOHC-A-25 | 0.5 | no route | Rear O2 signal | — | |
| W61 | OEM-4-W | MS3PROEVOHC-A-21 | 0.5 | no route | Front O2 signal | — | |
| W62 | OEM-4-R | MS3PROEVOHC-A-10 | 0.5 | no route | Intake air temperature 2 (IAT2, turbo) | — | |
| W63 | OEM-4-N | MS3PROEVOHC-A-22 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W64 | OEM-4-AD | MS3PROEVOHC-A-23 | 0.5 | no route | Fuel level | — | |
| W65 | OEM-3-T | MS3PROEVOHC-B-28 | 0.5 | no route | Vehicle speed | — | |
| W66 | OEM-3-S | MS3PROEVOHC-A-32 | 0.5 | no route | Immobiliser | — | |
| W67 | OEM-4-B | MS3PROEVOHC-B-20 | 0.5 | no route | Brake switch | — | |
| W68 | OEM-4-C | MS3PROEVOHC-B-29 | 0.5 | no route | Power steering pressure switch | — | |
| W69 | OEM-4-F | MS3PROEVOHC-C-11 | 0.5 | no route | A/C request | — | |
| W70 | OEM-4-H | MS3PROEVOHC-C-10 | 0.5 | no route | Neutral switch | — | |
| W71 | OEM-4-I | MS3PROEVOHC-B-34 | 0.5 | no route | Clutch switch | — | |
| W72 | OEM-4-J | MS3PROEVOHC-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 (9)
| Severity | Code | Subject | Message |
|---|---|---|---|
| info | NET_FAMILY | MS3PROEVOHC-A-18 ↔ MS3PROEVOHC-A-27 | MS3PROEVOHC-A-18 "Sensor return" [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-2-E ↔ MS3PROEVOHC-B-11 | OEM-2-E "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-F ↔ MS3PROEVOHC-B-12 | OEM-2-F "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-H ↔ MS3PROEVOHC-B-2 | OEM-2-H "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-2-I ↔ MS3PROEVOHC-B-4 | OEM-2-I "EGR valve" [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-2-N ↔ MS3PROEVOHC-B-6 | OEM-2-N "VTCS 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-2-R ↔ MS3PROEVOHC-B-8 | OEM-2-R "Malfunction indicator lamp (MIL)" [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. |
| info | NET_FAMILY | OEM-4-N ↔ MS3PROEVOHC-A-22 | OEM-4-N "Intake air temperature (IAT)" [temp_in] is wired to MS3PROEVOHC-A-22 "Analog In 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one. |
| info | UNMAPPED | OEM | 10 optional OEM pins are not mapped: OEM-3-C Purge solenoid valve; OEM-3-D EGR boost solenoid; OEM-3-K EVAP leak detection pump; OEM-3-M Alternator control; OEM-3-Q Data link connector (K-line); OEM-3-U Charge lamp; OEM-4-AC Data link connector (DLC TEN, turbo); OEM-4-AH EVAP leak detection pump solenoid valve; 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
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Mazda BP-ZET not found in the ECU's docs (downgraded: no verbatim source states this trigger mode) Auto-mapped by auto_map() from the library pin data on 2026-10-17. Review every wire against both manuals before building. Not wired: - OEM-4 AG: Constant +12V: AMP EFI MS3Pro EVO+ HC has no battery-constant input; not needed - OEM-3 C: Purge solenoid valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on AMP EFI MS3Pro EVO+ HC - OEM-3 K: EVAP leak detection pump: no free low_side/relay_control/heater_low_side/ls_hs/injector on AMP EFI MS3Pro EVO+ HC - OEM-3 M: Alternator control: no free low_side/relay_control/heater_low_side/ls_hs/injector on AMP EFI MS3Pro EVO+ HC - OEM-3 U: Charge lamp: no free low_side/relay_control/heater_low_side/ls_hs/injector on AMP EFI MS3Pro EVO+ HC - OEM-4 AH: EVAP leak detection pump solenoid valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on AMP EFI MS3Pro EVO+ HC - OEM-3 Q: Data link connector (K-line): no free k_line on AMP EFI MS3Pro EVO+ HC - OEM-4 AC: Data link connector (DLC TEN, turbo): no free k_line on AMP EFI MS3Pro EVO+ HC - OEM-3 D: EGR boost solenoid: 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 | Bosch relay catalogue (mini ISO relays) | https://www.bosch-ibusiness.com/media/downloads/kataloge/relay/2025_10_bosch_relay_catalogue.pdf | archive | 2026-10-05 | 20344cff1ef3 |
| 4 | community_copy | Honda S2000 Service Manual 2000–2008, Fuel and Emissions Systems | https://www.s2000.wiki/view/images/7/7f/Service_Manual_2000-2008.pdf | archive | 2026-10-05 | a470cfc928e9 |
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |
| 4 | vendor_doc | Omron G8V-RH-1C7T-R-DC12 high-current micro 280 automotive relay datasheet | https://www.alldatasheet.com/datasheet-pdf/pdf/333797/OMRON/G8V-RH-1C7T-R-DC12.html | — | 2026-10-05 | 764a0505a941 |