AP1 2000–03 (F20C) → AMP EFI MS3Pro EVO+ HC (auto)
AP1 2000–03 (F20C) — AMP EFI — MS3Pro EVO+ HC
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-08
Before you start
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 76 wires · 11 connectors · 4 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-B-1 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-B-9 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MS3PROEVOHC-A-35 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-B-10 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-B-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-B-20 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-B-22 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MS3PROEVOHC-B-3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MS3PROEVOHC-B-5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MS3PROEVOHC-B-7 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MS3PROEVOHC-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-C-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-C-31 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-C-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | MS3PROEVOHC-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MS3PROEVOHC-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MS3PROEVOHC-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MS3PROEVOHC-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MS3PROEVOHC-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | MS3PROEVOHC-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | MS3PROEVOHC-C-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-19 | MS3PROEVOHC-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-28 | MS3PROEVOHC-C-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C-9 | MS3PROEVOHC-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-C-8 | MS3PROEVOHC-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-C-21 | MS3PROEVOHC-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-C-20 | MS3PROEVOHC-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-C-29 | MS3PROEVOHC-B-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | SP-0V-1 | MS3PROEVOHC-B-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-C-4 | MS3PROEVOHC-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-C-12 | MS3PROEVOHC-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-C-13 | MS3PROEVOHC-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-C-14 | MS3PROEVOHC-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-B-11 | MS3PROEVOHC-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-3 | MS3PROEVOHC-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-B-4 | MS3PROEVOHC-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-B-5 | MS3PROEVOHC-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-15 | MS3PROEVOHC-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-16 | MS3PROEVOHC-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-17 | MS3PROEVOHC-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-20 | MS3PROEVOHC-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-28 | MS3PROEVOHC-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-B-12 | RLY1-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | SP-14V-1 | RLY1-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | RLY1-R-COIL- | MS3PROEVOHC-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-C-1 | MS3PROEVOHC-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-C-11 | MS3PROEVOHC-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-B-23 | MS3PROEVOHC-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A-1 | MS3PROEVOHC-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-12 | MS3PROEVOHC-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-A-18 | MS3PROEVOHC-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-A-2 | MS3PROEVOHC-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-A-3 | MS3PROEVOHC-B-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-A-4 | MS3PROEVOHC-B-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-A-6 | MS3PROEVOHC-B-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-C-2 | MS3PROEVOHC-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-A-19 | MS3PROEVOHC-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-C-17 | MS3PROEVOHC-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-C-27 | MS3PROEVOHC-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-A-23 | MS3PROEVOHC-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-C-15 | MS3PROEVOHC-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-C-16 | MS3PROEVOHC-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-C-26 | MS3PROEVOHC-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-C-25 | MS3PROEVOHC-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-A-29 | MS3PROEVOHC-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-A-30 | MS3PROEVOHC-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-C-24 | MS3PROEVOHC-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-A-9 | MS3PROEVOHC-B-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-C-5 | MS3PROEVOHC-B-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W72 | OEM-A-24 | MS3PROEVOHC-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W73 | OEM-A-26 | MS3PROEVOHC-B-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W74 | OEM-A-27 | MS3PROEVOHC-B-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W75 | OEM-A-32 | MS3PROEVOHC-C-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W76 | OEM-C-10 | MS3PROEVOHC-C-10 | 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 | RLY1-R-OUT | MS3PROEVOHC-A-13 | open (OL) | +12 V supply must not touch sensor ground | |
| 4 | MS3PROEVOHC-A-13 | MS3PROEVOHC-A-8 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 5 | MS3PROEVOHC-A-13 | MS3PROEVOHC-C-15 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 6 | MS3PROEVOHC-A-35 | MS3PROEVOHC-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 7 | MS3PROEVOHC-A-35 | MS3PROEVOHC-C-15 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 8 | MS3PROEVOHC-B-3 | MS3PROEVOHC-A-8 | open (OL) | power ground must not touch 5 V sensor reference | |
| 9 | MS3PROEVOHC-B-3 | MS3PROEVOHC-C-15 | open (OL) | power ground must not touch 5 V sensor reference | |
| 10 | MS3PROEVOHC-B-3 | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 11 | RLY1-R-OUT | MS3PROEVOHC-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 12 | RLY1-R-OUT | MS3PROEVOHC-C-15 | open (OL) | +12 V supply must not touch 5 V sensor reference |
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 | — | W50 | — | 0.5 | OEM-B-23 | — | — | — |
| 10 | MAT in | — | W65 | — | 0.5 | OEM-C-26 | — | — | — |
| 11 | CLT in | — | W66 | — | 0.5 | OEM-C-25 | — | — | — |
| 12 | Analog In 6 | — | W69 | — | 0.5 | OEM-C-24 | — | — | — |
| 13 | Logic Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W40 | — | 0.5 | OEM-A-16 | — | — | — |
| 15 | CKP− | — | W25 | — | 0.5 | OEM-C-9 | — | — | — |
| 16 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 17 | Analog In 7 | — | — | — | — | — | — | — | — |
| 18 | Sensor return | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Analog in 1 | — | W60 | — | 0.5 | OEM-C-17 | — | — | — |
| 2 | High current out 2 | — | W51 | — | 0.5 | OEM-A-1 | — | — | — |
| 20 | Analog in 2 | — | W63 | — | 0.5 | OEM-C-15 | — | — | — |
| 21 | Analog in 3 | — | W64 | — | 0.5 | OEM-C-16 | — | — | — |
| 22 | Analog In 4 | — | W67 | — | 0.5 | OEM-A-29 | — | — | — |
| 23 | Analog In 5 | — | W68 | — | 0.5 | OEM-A-30 | — | — | — |
| 24 | Tach out | — | W59 | — | 0.5 | OEM-A-19 | — | — | — |
| 25 | O2 in | — | W62 | — | 0.5 | OEM-A-23 | — | — | — |
| 26 | CMP+ | — | W28 | — | 0.5 | OEM-C-20 | — | — | — |
| 27 | CMP− | — | W27 | — | 0.5 | OEM-C-21 | — | — | — |
| 28 | Fuel pump relay out | — | W39 | — | 0.5 | OEM-A-15 | — | — | — |
| 29 | PWM out 2 | — | W42 | — | 0.5 | OEM-A-20 | — | — | — |
| 3 | Injector out J | — | W35 | — | 0.5 | OEM-B-11 | — | — | — |
| 30 | PWM out 3 | — | W47 | — | 0.5 | RLY1-R-COIL- | — | — | — |
| 31 | Knock in 1 | — | — | — | — | — | — | — | — |
| 32 | Digital switched in 1 | — | W72 | — | 0.5 | OEM-A-24 | — | — | — |
| 33 | CAN L | — | — | — | — | — | — | — | — |
| 34 | CAN H | — | — | — | — | — | — | — | — |
| 35 | 12V+ switched power in | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Injector out I | — | W36 | — | 0.5 | OEM-B-3 | — | — | — |
| 5 | High current out 3 | — | W52 | — | 0.5 | OEM-A-12 | — | — | — |
| 6 | CKP+ | — | W26 | — | 0.5 | OEM-C-8 | — | — | — |
| 7 | Knock In 2 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out | — | W23 | — | 0.5 | OEM-C-19 | — | — | — |
| 9 | TPS in | — | W61 | — | 0.5 | OEM-C-27 | — | — | — |
MS3PROEVOHC-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | W37 | — | 0.5 | OEM-B-4 | — | — | — |
| 10 | Injector out F | — | W38 | — | 0.5 | OEM-B-5 | — | — | — |
| 11 | Injector out G | — | W53 | — | 0.5 | OEM-A-18 | — | — | — |
| 12 | Injector out H | — | W54 | — | 0.5 | OEM-A-2 | — | — | — |
| 13 | Spark out G | — | W31 | — | 0.5 | OEM-C-4 | — | — | — |
| 14 | Spark out E | — | W32 | — | 0.5 | OEM-C-12 | — | — | — |
| 15 | Spark out C | — | W33 | — | 0.5 | OEM-C-13 | — | — | — |
| 16 | Spark out H | — | W34 | — | 0.5 | OEM-C-14 | — | — | — |
| 17 | Digital frequency in 2 (Hall) | — | W71 | — | 0.5 | OEM-C-5 | — | — | — |
| 18 | Ground Shield Drain | — | — | — | — | — | — | — | — |
| 19 | Digital switched 12V in | — | — | — | — | — | — | — | — |
| 2 | Injector out B | — | W55 | — | 0.5 | OEM-A-3 | — | — | — |
| 20 | Digital switched in 2 | — | W73 | — | 0.5 | OEM-A-26 | — | — | — |
| 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) | — | W70 | — | 0.5 | OEM-A-9 | — | — | — |
| 29 | Digital switched in 3 | — | W74 | — | 0.5 | OEM-A-27 | — | — | — |
| 3 | Ground | — | W8 | — | 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+) | — | W29 | — | 0.5 | OEM-C-29 | — | — | — |
| 35 | Digital Frequency in 1 (VR−) | — | W30 | — | 0.5 | SP-0V-1 | — | — | — |
| 4 | Injector out C | — | W56 | — | 0.5 | OEM-A-4 | — | — | — |
| 5 | Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | W57 | — | 0.5 | OEM-A-6 | — | — | — |
| 7 | Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | W58 | — | 0.5 | OEM-C-2 | — | — | — |
| 9 | Ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
MS3PROEVOHC-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM out 5 | — | W49 | — | 0.5 | OEM-C-11 | — | — | — |
| 10 | Digital switched in 5 | — | W76 | — | 0.5 | OEM-C-10 | — | — | — |
| 11 | Digital switched in 4 | — | W75 | — | 0.5 | OEM-A-32 | — | — | — |
| 12 | Digital I/O 5 | — | — | — | — | — | — | — | — |
| 13 | Digital I/O 3 | — | — | — | — | — | — | — | — |
| 14 | Digital I/O 1 | — | — | — | — | — | — | — | — |
| 15 | 5V+ VREF out 2 | — | W24 | — | 0.5 | OEM-C-28 | — | — | — |
| 17 | Sensor return | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Sensor return | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor return | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | PWM out 4 | — | W48 | — | 0.5 | OEM-C-1 | — | — | — |
| 20 | Sensor return | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Sensor return | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | 5V+ VREF out 1 | — | — | — | — | — | — | — | — |
| 3 | Digital out 2 | — | W43 | — | 0.5 | OEM-A-28 | — | — | — |
| 4 | Digital out 1 | — | W41 | — | 0.5 | OEM-A-17 | — | — | — |
| 5 | Digital I/O 4 | — | — | — | — | — | — | — | — |
| 6 | Digital I/O 2 | — | — | — | — | — | — | — | — |
| 7 | Analog in 8 | — | — | — | — | — | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp gauge drive | — | W51 | — | 0.5 | MS3PROEVOHC-A-2 | — | — | — |
| 2 | Air control valve solenoid | — | W54 | — | 0.5 | MS3PROEVOHC-B-12 | — | — | — |
| 3 | Evap bypass solenoid | — | W55 | — | 0.5 | MS3PROEVOHC-B-2 | — | — | — |
| 4 | Evap canister vent shut valve | — | W56 | — | 0.5 | MS3PROEVOHC-B-4 | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | Evap canister purge valve | — | W57 | — | 0.5 | MS3PROEVOHC-B-6 | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Vehicle speed sensor | — | W70 | — | 0.5 | MS3PROEVOHC-B-28 | — | — | — |
| 10 | Service check signal | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | Immobilizer indicator light | — | W52 | — | 0.5 | MS3PROEVOHC-A-5 | — | — | — |
| 13 | Immobilizer enable signal | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | Fuel pump relay (USDM) | — | W39 | — | 0.5 | MS3PROEVOHC-A-28 | — | — | — |
| 16 | Fuel pump relay (JDM) | — | W40 | — | 0.5 | MS3PROEVOHC-A-14 | — | — | — |
| 17 | A/C clutch relay | — | W41 | — | 0.5 | MS3PROEVOHC-C-4 | — | — | — |
| 18 | Check engine light (MIL) | — | W53 | — | 0.5 | MS3PROEVOHC-B-11 | — | — | — |
| 19 | Tacho output | — | W59 | — | 0.5 | MS3PROEVOHC-A-24 | — | — | — |
| 20 | Radiator fan relay | — | W42 | — | 0.5 | MS3PROEVOHC-A-29 | — | — | — |
| 21 | K-Line | — | — | — | — | — | — | — | — |
| 22 | NC | — | — | — | — | — | — | — | — |
| 23 | Secondary O2 sensor | — | W62 | — | 0.5 | MS3PROEVOHC-A-25 | — | — | — |
| 24 | Starter switch signal | — | W72 | — | 0.5 | MS3PROEVOHC-A-32 | — | — | — |
| 25 | Immobilizer code | — | — | — | — | — | — | — | — |
| 26 | Power steering load detect | — | W73 | — | 0.5 | MS3PROEVOHC-B-20 | — | — | — |
| 27 | A/C switch (request) | — | W74 | — | 0.5 | MS3PROEVOHC-B-29 | — | — | — |
| 28 | Air pump relay | — | W43 | — | 0.5 | MS3PROEVOHC-C-3 | — | — | — |
| 29 | Fuel tank pressure sensor | — | W67 | — | 0.5 | MS3PROEVOHC-A-22 | — | — | — |
| 30 | Electrical load detector | — | W68 | — | 0.5 | MS3PROEVOHC-A-23 | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | Brake switch | — | W75 | — | 0.5 | MS3PROEVOHC-C-11 | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Power source 1 (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Power ground 1 | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Injector 2 | — | W36 | — | 0.5 | MS3PROEVOHC-A-4 | — | — | — |
| 4 | Injector 3 | — | W37 | — | 0.5 | MS3PROEVOHC-B-1 | — | — | — |
| 5 | Injector 4 | — | W38 | — | 0.5 | MS3PROEVOHC-B-10 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Power source 2 (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Power ground 2 | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Injector 1 | — | W35 | — | 0.5 | MS3PROEVOHC-A-3 | — | — | — |
| 12 | VTEC solenoid | — | W44 | — | 0.5 | RLY1-R-OUT | — | — | — |
| 13 | NC | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | NC | — | — | — | — | — | — | — | — |
| 17 | NC | — | — | — | — | — | — | — | — |
| 18 | NC | — | — | — | — | — | — | — | — |
| 19 | NC | — | — | — | — | — | — | — | — |
| 20 | Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | Backup power (battery constant) | — | — | — | — | — | — | — | — |
| 22 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Idle air control valve | — | W50 | — | 0.5 | MS3PROEVOHC-A-1 | — | — | — |
| 24 | NC | — | — | — | — | — | — | — | — |
| 25 | NC | — | — | — | — | — | — | — | — |
OEM-C
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Primary O2 heater | — | W48 | — | 0.5 | MS3PROEVOHC-C-2 | — | — | — |
| 2 | Alternator control | — | W58 | — | 0.5 | MS3PROEVOHC-B-8 | — | — | — |
| 3 | Knock sensor | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 1 | — | W31 | — | 0.5 | MS3PROEVOHC-B-13 | — | — | — |
| 5 | Alternator FR signal | — | W71 | — | 0.5 | MS3PROEVOHC-B-17 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | Sensor ground 1 | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Crank sensor + (CKP+) | — | W26 | — | 0.5 | MS3PROEVOHC-A-6 | — | — | — |
| 9 | Crank sensor − (CKP−) | — | W25 | — | 0.5 | MS3PROEVOHC-A-15 | — | — | — |
| 10 | VTEC pressure switch | — | W76 | — | 0.5 | MS3PROEVOHC-C-10 | — | — | — |
| 11 | Secondary O2 heater control | — | W49 | — | 0.5 | MS3PROEVOHC-C-1 | — | — | — |
| 12 | Ignition coil 2 | — | W32 | — | 0.5 | MS3PROEVOHC-B-14 | — | — | — |
| 13 | Ignition coil 3 | — | W33 | — | 0.5 | MS3PROEVOHC-B-15 | — | — | — |
| 14 | Ignition coil 4 | — | W34 | — | 0.5 | MS3PROEVOHC-B-16 | — | — | — |
| 15 | Secondary O2 sensor | — | W63 | — | 0.5 | MS3PROEVOHC-A-20 | — | — | — |
| 16 | Primary O2 sensor | — | W64 | — | 0.5 | MS3PROEVOHC-A-21 | — | — | — |
| 17 | MAP sensor | — | W60 | — | 0.5 | MS3PROEVOHC-A-19 | — | — | — |
| 18 | Sensor ground 2 | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 5V supply 1 (MAP) | — | W23 | — | 0.5 | MS3PROEVOHC-A-8 | — | — | — |
| 20 | Cam (TDC1) sensor + | — | W28 | — | 0.5 | MS3PROEVOHC-A-26 | — | — | — |
| 21 | Cam (TDC1) sensor − | — | W27 | — | 0.5 | MS3PROEVOHC-A-27 | — | — | — |
| 22 | Knock sensor | — | — | — | — | — | — | — | — |
| 23 | NC | — | — | — | — | — | — | — | — |
| 24 | Air pump electric current sensor | — | W69 | — | 0.5 | MS3PROEVOHC-A-12 | — | — | — |
| 25 | Intake air temp sensor | — | W66 | — | 0.5 | MS3PROEVOHC-A-11 | — | — | — |
| 26 | Coolant temp sensor | — | W65 | — | 0.5 | MS3PROEVOHC-A-10 | — | — | — |
| 27 | Throttle position sensor | — | W61 | — | 0.5 | MS3PROEVOHC-A-9 | — | — | — |
| 28 | Sensor 5V supply 2 | — | W24 | — | 0.5 | MS3PROEVOHC-C-15 | — | — | — |
| 29 | Cam (TDC2) sensor + | — | W29 | — | 0.5 | MS3PROEVOHC-B-34 | — | — | — |
| 30 | Cam (TDC2) sensor − | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Timing ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
OEM-D
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | NC | — | — | — | — | — | — | — | — |
| 2 | NC | — | — | — | — | — | — | — | — |
| 3 | NC | — | — | — | — | — | — | — | — |
| 4 | NC | — | — | — | — | — | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | NC | — | — | — | — | — | — | — | — |
| 10 | NC | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | NC | — | — | — | — | — | — | — | — |
| 13 | NC | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | NC | — | — | — | — | — | — | — | — |
RLY1-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (switched +12 V) | — | W46 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W47 | — | 0.5 | MS3PROEVOHC-A-30 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W45 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W44 | — | 0.5 | OEM-B-12 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W20 | — | 0.5 | MS3PROEVOHC-C-19 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-C-18 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C-30 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-C-31 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-C-7 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | MS3PROEVOHC-A-13 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MS3PROEVOHC-A-18 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MS3PROEVOHC-C-17 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MS3PROEVOHC-C-18 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | MS3PROEVOHC-C-20 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | MS3PROEVOHC-C-21 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | MS3PROEVOHC-B-35 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-B-1 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-B-9 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MS3PROEVOHC-A-35 | — | — | — |
| 1 | — | — | W45 | — | 0.5 | RLY1-R-IN | — | — | — |
| 1 | — | — | W46 | — | 0.5 | RLY1-R-COIL+ | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-B-10 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B-20 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B-22 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MS3PROEVOHC-B-3 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROEVOHC-B-5 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MS3PROEVOHC-B-7 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MS3PROEVOHC-B-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Coolant temp gauge drive | low_side_out | MS3PROEVOHC-A-2 | High current out 2 | low_side_out | corroborated | |
| OEM-A-10 | Service check signal | — | — | — | — | single_source | |
| OEM-A-11 | NC | — | — | — | — | unverified | |
| OEM-A-12 | Immobilizer indicator light | low_side_out | MS3PROEVOHC-A-5 | High current out 3 | low_side_out | single_source | |
| OEM-A-13 | Immobilizer enable signal | — | — | — | — | single_source | |
| OEM-A-14 | NC | — | — | — | — | unverified | |
| OEM-A-15 | Fuel pump relay (USDM) | low_side_out | MS3PROEVOHC-A-28 | Fuel pump relay out | low_side_out | corroborated | |
| OEM-A-16 | Fuel pump relay (JDM) | low_side_out | MS3PROEVOHC-A-14 | PWM / Idle Out 1 | low_side_out | single_source | |
| OEM-A-17 | A/C clutch relay | low_side_out | MS3PROEVOHC-C-4 | Digital out 1 | low_side_out | corroborated | |
| OEM-A-18 | Check engine light (MIL) | low_side_out | MS3PROEVOHC-B-11 | Injector out G | injector_out | corroborated | |
| OEM-A-19 | Tacho output | tacho_out | MS3PROEVOHC-A-24 | Tach out | tacho_out | corroborated | |
| OEM-A-2 | Air control valve solenoid | low_side_out | MS3PROEVOHC-B-12 | Injector out H | injector_out | single_source | |
| OEM-A-20 | Radiator fan relay | low_side_out | MS3PROEVOHC-A-29 | PWM out 2 | low_side_out | corroborated | |
| OEM-A-21 | K-Line | serial | — | — | — | single_source | |
| OEM-A-22 | NC | — | — | — | — | unverified | |
| OEM-A-23 | Secondary O2 sensor | lambda_nb_in | MS3PROEVOHC-A-25 | O2 in | lambda_nb_in | single_source | |
| OEM-A-24 | Starter switch signal | digital_in | MS3PROEVOHC-A-32 | Digital switched in 1 | digital_in | corroborated | |
| OEM-A-25 | Immobilizer code | — | — | — | — | single_source | |
| OEM-A-26 | Power steering load detect | digital_in | MS3PROEVOHC-B-20 | Digital switched in 2 | digital_in | corroborated | |
| OEM-A-27 | A/C switch (request) | digital_in | MS3PROEVOHC-B-29 | Digital switched in 3 | digital_in | corroborated | |
| OEM-A-28 | Air pump relay | low_side_out | MS3PROEVOHC-C-3 | Digital out 2 | low_side_out | corroborated | |
| OEM-A-29 | Fuel tank pressure sensor | analog_in | MS3PROEVOHC-A-22 | Analog In 4 | analog_in | corroborated | |
| OEM-A-3 | Evap bypass solenoid | low_side_out | MS3PROEVOHC-B-2 | Injector out B | injector_out | single_source | |
| OEM-A-30 | Electrical load detector | analog_in | MS3PROEVOHC-A-23 | Analog In 5 | analog_in | corroborated | |
| OEM-A-31 | NC | — | — | — | — | unverified | |
| OEM-A-32 | Brake switch | digital_in | MS3PROEVOHC-C-11 | Digital switched in 4 | digital_in | corroborated | |
| OEM-A-4 | Evap canister vent shut valve | low_side_out | MS3PROEVOHC-B-4 | Injector out C | injector_out | single_source | |
| OEM-A-5 | NC | — | — | — | — | unverified | |
| OEM-A-6 | Evap canister purge valve | low_side_out | MS3PROEVOHC-B-6 | Injector out D | injector_out | single_source | |
| OEM-A-7 | NC | — | — | — | — | unverified | |
| OEM-A-8 | NC | — | — | — | — | unverified | |
| OEM-A-9 | Vehicle speed sensor | digital_in | MS3PROEVOHC-B-28 | Digital frequency in 1 (unconditioned) | digital_in | corroborated | |
| OEM-B-1 | Power source 1 (main relay) | power_in | MS3PROEVOHC-A-35 + RLY1-R-COIL+ + RLY1-R-IN | 12V+ switched power in + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | corroborated | |
| OEM-B-10 | Power ground 2 | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-B-11 | Injector 1 | injector_out | MS3PROEVOHC-A-3 | Injector out J | injector_out | corroborated | |
| OEM-B-12 | VTEC solenoid | high_side_out | RLY1-R-OUT | Relay contact output (switched +12 V to load) | power_out | corroborated | |
| OEM-B-13 | NC | — | — | — | — | unverified | |
| OEM-B-14 | NC | — | — | — | — | unverified | |
| OEM-B-15 | NC | — | — | — | — | unverified | |
| OEM-B-16 | NC | — | — | — | — | unverified | |
| OEM-B-17 | NC | — | — | — | — | unverified | |
| OEM-B-18 | NC | — | — | — | — | unverified | |
| OEM-B-19 | NC | — | — | — | — | unverified | |
| OEM-B-2 | Power ground 1 | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-B-20 | Ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-B-21 | Backup power (battery constant) | power_in | — | — | — | single_source | |
| OEM-B-22 | Ground | ground | MS3PROEVOHC-B-3 + MS3PROEVOHC-B-5 + MS3PROEVOHC-B-7 + MS3PROEVOHC-B-9 | Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-B-23 | Idle air control valve | low_side_out | MS3PROEVOHC-A-1 | High current out 1 | low_side_out | corroborated | |
| OEM-B-24 | NC | — | — | — | — | unverified | |
| OEM-B-25 | NC | — | — | — | — | unverified | |
| OEM-B-3 | Injector 2 | injector_out | MS3PROEVOHC-A-4 | Injector out I | injector_out | corroborated | |
| OEM-B-4 | Injector 3 | injector_out | MS3PROEVOHC-B-1 | Injector out A | injector_out | corroborated | |
| OEM-B-5 | Injector 4 | injector_out | MS3PROEVOHC-B-10 | Injector out F | injector_out | corroborated | |
| OEM-B-6 | NC | — | — | — | — | unverified | |
| OEM-B-7 | NC | — | — | — | — | unverified | |
| OEM-B-8 | NC | — | — | — | — | unverified | |
| OEM-B-9 | Power source 2 (main relay) | power_in | MS3PROEVOHC-A-35 + RLY1-R-COIL+ + RLY1-R-IN | 12V+ switched power in + Relay coil positive (switched +12 V) + Relay contact input (switched +12 V) | power_in + power_out | corroborated | |
| OEM-C-1 | Primary O2 heater | low_side_out | MS3PROEVOHC-C-2 | PWM out 4 | low_side_out | corroborated | |
| OEM-C-10 | VTEC pressure switch | digital_in | MS3PROEVOHC-C-10 | Digital switched in 5 | digital_in | corroborated | |
| OEM-C-11 | Secondary O2 heater control | low_side_out | MS3PROEVOHC-C-1 | PWM out 5 | low_side_out | single_source | |
| OEM-C-12 | Ignition coil 2 | ignition_out | MS3PROEVOHC-B-14 | Spark out E | ignition_out | corroborated | |
| OEM-C-13 | Ignition coil 3 | ignition_out | MS3PROEVOHC-B-15 | Spark out C | ignition_out | corroborated | |
| OEM-C-14 | Ignition coil 4 | ignition_out | MS3PROEVOHC-B-16 | Spark out H | ignition_out | corroborated | |
| OEM-C-15 | Secondary O2 sensor | lambda_nb_in | MS3PROEVOHC-A-20 | Analog in 2 | analog_in | corroborated | |
| OEM-C-16 | Primary O2 sensor | lambda_nb_in | MS3PROEVOHC-A-21 | Analog in 3 | analog_in | corroborated | |
| OEM-C-17 | MAP sensor | analog_in | MS3PROEVOHC-A-19 | Analog in 1 | analog_in | corroborated | |
| OEM-C-18 | Sensor ground 2 | sensor_ground | MS3PROEVOHC-A-13 + MS3PROEVOHC-A-18 + MS3PROEVOHC-B-35 + MS3PROEVOHC-C-17 + MS3PROEVOHC-C-18 + MS3PROEVOHC-C-19 + MS3PROEVOHC-C-20 + MS3PROEVOHC-C-21 | Logic Ground + Sensor return + Digital Frequency in 1 (VR−) + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | digital_in + sensor_ground | corroborated | |
| OEM-C-19 | Sensor 5V supply 1 (MAP) | vref | MS3PROEVOHC-A-8 | 5V+ VREF out | vref | corroborated | |
| OEM-C-2 | Alternator control | low_side_out | MS3PROEVOHC-B-8 | Injector out E | injector_out | single_source | |
| OEM-C-20 | Cam (TDC1) sensor + | trigger_in | MS3PROEVOHC-A-26 | CMP+ | trigger_in | corroborated | |
| OEM-C-21 | Cam (TDC1) sensor − | trigger_in | MS3PROEVOHC-A-27 | CMP− | trigger_in | corroborated | |
| OEM-C-22 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-23 | NC | — | — | — | — | unverified | |
| OEM-C-24 | Air pump electric current sensor | analog_in | MS3PROEVOHC-A-12 | Analog In 6 | analog_in | single_source | |
| OEM-C-25 | Intake air temp sensor | temp_in | MS3PROEVOHC-A-11 | CLT in | temp_in | corroborated | |
| OEM-C-26 | Coolant temp sensor | temp_in | MS3PROEVOHC-A-10 | MAT in | temp_in | corroborated | |
| OEM-C-27 | Throttle position sensor | analog_in | MS3PROEVOHC-A-9 | TPS in | analog_in | corroborated | |
| OEM-C-28 | Sensor 5V supply 2 | vref | MS3PROEVOHC-C-15 | 5V+ VREF out 2 | vref | corroborated | |
| OEM-C-29 | Cam (TDC2) sensor + | trigger_in | MS3PROEVOHC-B-34 | Digital Frequency in 1 (VR+) | digital_in | corroborated | |
| OEM-C-3 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-30 | Cam (TDC2) sensor − | sensor_ground | MS3PROEVOHC-A-13 + MS3PROEVOHC-A-18 + MS3PROEVOHC-B-35 + MS3PROEVOHC-C-17 + MS3PROEVOHC-C-18 + MS3PROEVOHC-C-19 + MS3PROEVOHC-C-20 + MS3PROEVOHC-C-21 | Logic Ground + Sensor return + Digital Frequency in 1 (VR−) + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | digital_in + sensor_ground | corroborated | |
| OEM-C-31 | Timing ground | sensor_ground | MS3PROEVOHC-A-13 + MS3PROEVOHC-A-18 + MS3PROEVOHC-B-35 + MS3PROEVOHC-C-17 + MS3PROEVOHC-C-18 + MS3PROEVOHC-C-19 + MS3PROEVOHC-C-20 + MS3PROEVOHC-C-21 | Logic Ground + Sensor return + Digital Frequency in 1 (VR−) + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | digital_in + sensor_ground | single_source | |
| OEM-C-4 | Ignition coil 1 | ignition_out | MS3PROEVOHC-B-13 | Spark out G | ignition_out | corroborated | |
| OEM-C-5 | Alternator FR signal | digital_in | MS3PROEVOHC-B-17 | Digital frequency in 2 (Hall) | digital_in | single_source | |
| OEM-C-6 | NC | — | — | — | — | unverified | |
| OEM-C-7 | Sensor ground 1 | sensor_ground | MS3PROEVOHC-A-13 + MS3PROEVOHC-A-18 + MS3PROEVOHC-B-35 + MS3PROEVOHC-C-17 + MS3PROEVOHC-C-18 + MS3PROEVOHC-C-19 + MS3PROEVOHC-C-20 + MS3PROEVOHC-C-21 | Logic Ground + Sensor return + Digital Frequency in 1 (VR−) + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | digital_in + sensor_ground | corroborated | |
| OEM-C-8 | Crank sensor + (CKP+) | trigger_in | MS3PROEVOHC-A-6 | CKP+ | trigger_in | corroborated | |
| OEM-C-9 | Crank sensor − (CKP−) | trigger_in | MS3PROEVOHC-A-15 | CKP− | trigger_in | corroborated | |
| OEM-D-1 | NC | — | — | — | — | unverified | |
| OEM-D-10 | NC | — | — | — | — | unverified | |
| OEM-D-11 | NC | — | — | — | — | unverified | |
| OEM-D-12 | NC | — | — | — | — | unverified | |
| OEM-D-13 | NC | — | — | — | — | unverified | |
| OEM-D-14 | NC | — | — | — | — | unverified | |
| OEM-D-15 | NC | — | — | — | — | unverified | |
| OEM-D-16 | NC | — | — | — | — | unverified | |
| OEM-D-2 | NC | — | — | — | — | unverified | |
| OEM-D-3 | NC | — | — | — | — | unverified | |
| OEM-D-4 | NC | — | — | — | — | unverified | |
| OEM-D-5 | NC | — | — | — | — | unverified | |
| OEM-D-6 | NC | — | — | — | — | unverified | |
| OEM-D-7 | NC | — | — | — | — | unverified | |
| OEM-D-8 | NC | — | — | — | — | unverified | |
| OEM-D-9 | NC | — | — | — | — | unverified |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-B-1 | SP-14V-1 | 0.85 | no route | Power source 1 (main relay) | — | |
| W2 | OEM-B-9 | SP-14V-1 | 0.85 | no route | Power source 2 (main relay) | — | |
| W3 | SP-14V-1 | MS3PROEVOHC-A-35 | 0.85 | no route | 12V+ switched power in | — | |
| W4 | OEM-B-10 | SP-GND-1 | 0.85 | no route | Power ground 2 | — | |
| W5 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Power ground 1 | — | |
| W6 | OEM-B-20 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W7 | OEM-B-22 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W8 | SP-GND-1 | MS3PROEVOHC-B-3 | 0.85 | no route | Ground | — | |
| W9 | SP-GND-1 | MS3PROEVOHC-B-5 | 0.85 | no route | Ground | — | |
| W10 | SP-GND-1 | MS3PROEVOHC-B-7 | 0.85 | no route | Ground | — | |
| W11 | SP-GND-1 | MS3PROEVOHC-B-9 | 0.85 | no route | Ground | — | |
| W12 | OEM-C-18 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W13 | OEM-C-30 | SP-0V-1 | 0.5 | no route | Cam (TDC2) sensor − | — | |
| W14 | OEM-C-31 | SP-0V-1 | 0.5 | no route | Timing ground | — | |
| W15 | OEM-C-7 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W16 | SP-0V-1 | MS3PROEVOHC-A-13 | 0.5 | no route | Logic Ground | — | |
| W17 | SP-0V-1 | MS3PROEVOHC-A-18 | 0.5 | no route | Sensor return | — | |
| W18 | SP-0V-1 | MS3PROEVOHC-C-17 | 0.5 | no route | Sensor return | — | |
| W19 | SP-0V-1 | MS3PROEVOHC-C-18 | 0.5 | no route | Sensor return | — | |
| W20 | SP-0V-1 | MS3PROEVOHC-C-19 | 0.5 | no route | Sensor return | — | |
| W21 | SP-0V-1 | MS3PROEVOHC-C-20 | 0.5 | no route | Sensor return | — | |
| W22 | SP-0V-1 | MS3PROEVOHC-C-21 | 0.5 | no route | Sensor return | — | |
| W23 | OEM-C-19 | MS3PROEVOHC-A-8 | 0.5 | no route | Sensor 5V supply 1 (MAP) | — | |
| W24 | OEM-C-28 | MS3PROEVOHC-C-15 | 0.5 | no route | Sensor 5V supply 2 | — | |
| W25 | OEM-C-9 | MS3PROEVOHC-A-15 | 0.5 | no route | Crank sensor − (CKP−) | — | |
| W26 | OEM-C-8 | MS3PROEVOHC-A-6 | 0.5 | no route | Crank sensor + (CKP+) | — | |
| W27 | OEM-C-21 | MS3PROEVOHC-A-27 | 0.5 | no route | Cam (TDC1) sensor − | — | |
| W28 | OEM-C-20 | MS3PROEVOHC-A-26 | 0.5 | no route | Cam (TDC1) sensor + | — | |
| W29 | OEM-C-29 | MS3PROEVOHC-B-34 | 0.5 | no route | Cam (TDC2) sensor + | — | |
| W30 | SP-0V-1 | MS3PROEVOHC-B-35 | 0.5 | no route | Digital Frequency in 1 (VR−) | — | |
| W31 | OEM-C-4 | MS3PROEVOHC-B-13 | 0.5 | no route | Ignition coil 1 | — | |
| W32 | OEM-C-12 | MS3PROEVOHC-B-14 | 0.5 | no route | Ignition coil 2 | — | |
| W33 | OEM-C-13 | MS3PROEVOHC-B-15 | 0.5 | no route | Ignition coil 3 | — | |
| W34 | OEM-C-14 | MS3PROEVOHC-B-16 | 0.5 | no route | Ignition coil 4 | — | |
| W35 | OEM-B-11 | MS3PROEVOHC-A-3 | 0.5 | no route | Injector 1 | — | |
| W36 | OEM-B-3 | MS3PROEVOHC-A-4 | 0.5 | no route | Injector 2 | — | |
| W37 | OEM-B-4 | MS3PROEVOHC-B-1 | 0.5 | no route | Injector 3 | — | |
| W38 | OEM-B-5 | MS3PROEVOHC-B-10 | 0.5 | no route | Injector 4 | — | |
| W39 | OEM-A-15 | MS3PROEVOHC-A-28 | 0.5 | no route | Fuel pump relay (USDM) | — | |
| W40 | OEM-A-16 | MS3PROEVOHC-A-14 | 0.5 | no route | Fuel pump relay (JDM) | — | |
| W41 | OEM-A-17 | MS3PROEVOHC-C-4 | 0.5 | no route | A/C clutch relay | — | |
| W42 | OEM-A-20 | MS3PROEVOHC-A-29 | 0.5 | no route | Radiator fan relay | — | |
| W43 | OEM-A-28 | MS3PROEVOHC-C-3 | 0.5 | no route | Air pump relay | — | |
| W44 | OEM-B-12 | RLY1-R-OUT | 0.5 | no route | VTEC solenoid | — | |
| W45 | SP-14V-1 | RLY1-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W46 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W47 | RLY1-R-COIL- | MS3PROEVOHC-A-30 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W48 | OEM-C-1 | MS3PROEVOHC-C-2 | 0.5 | no route | Primary O2 heater | — | |
| W49 | OEM-C-11 | MS3PROEVOHC-C-1 | 0.5 | no route | Secondary O2 heater control | — | |
| W50 | OEM-B-23 | MS3PROEVOHC-A-1 | 0.5 | no route | Idle air control valve | — | |
| W51 | OEM-A-1 | MS3PROEVOHC-A-2 | 0.5 | no route | Coolant temp gauge drive | — | |
| W52 | OEM-A-12 | MS3PROEVOHC-A-5 | 0.5 | no route | Immobilizer indicator light | — | |
| W53 | OEM-A-18 | MS3PROEVOHC-B-11 | 0.5 | no route | Check engine light (MIL) | — | |
| W54 | OEM-A-2 | MS3PROEVOHC-B-12 | 0.5 | no route | Air control valve solenoid | — | |
| W55 | OEM-A-3 | MS3PROEVOHC-B-2 | 0.5 | no route | Evap bypass solenoid | — | |
| W56 | OEM-A-4 | MS3PROEVOHC-B-4 | 0.5 | no route | Evap canister vent shut valve | — | |
| W57 | OEM-A-6 | MS3PROEVOHC-B-6 | 0.5 | no route | Evap canister purge valve | — | |
| W58 | OEM-C-2 | MS3PROEVOHC-B-8 | 0.5 | no route | Alternator control | — | |
| W59 | OEM-A-19 | MS3PROEVOHC-A-24 | 0.5 | no route | Tacho output | — | |
| W60 | OEM-C-17 | MS3PROEVOHC-A-19 | 0.5 | no route | MAP sensor | — | |
| W61 | OEM-C-27 | MS3PROEVOHC-A-9 | 0.5 | no route | Throttle position sensor | — | |
| W62 | OEM-A-23 | MS3PROEVOHC-A-25 | 0.5 | no route | Secondary O2 sensor | — | |
| W63 | OEM-C-15 | MS3PROEVOHC-A-20 | 0.5 | no route | Secondary O2 sensor | — | |
| W64 | OEM-C-16 | MS3PROEVOHC-A-21 | 0.5 | no route | Primary O2 sensor | — | |
| W65 | OEM-C-26 | MS3PROEVOHC-A-10 | 0.5 | no route | Coolant temp sensor | — | |
| W66 | OEM-C-25 | MS3PROEVOHC-A-11 | 0.5 | no route | Intake air temp sensor | — | |
| W67 | OEM-A-29 | MS3PROEVOHC-A-22 | 0.5 | no route | Fuel tank pressure sensor | — | |
| W68 | OEM-A-30 | MS3PROEVOHC-A-23 | 0.5 | no route | Electrical load detector | — | |
| W69 | OEM-C-24 | MS3PROEVOHC-A-12 | 0.5 | no route | Air pump electric current sensor | — | |
| W70 | OEM-A-9 | MS3PROEVOHC-B-28 | 0.5 | no route | Vehicle speed sensor | — | |
| W71 | OEM-C-5 | MS3PROEVOHC-B-17 | 0.5 | no route | Alternator FR signal | — | |
| W72 | OEM-A-24 | MS3PROEVOHC-A-32 | 0.5 | no route | Starter switch signal | — | |
| W73 | OEM-A-26 | MS3PROEVOHC-B-20 | 0.5 | no route | Power steering load detect | — | |
| W74 | OEM-A-27 | MS3PROEVOHC-B-29 | 0.5 | no route | A/C switch (request) | — | |
| W75 | OEM-A-32 | MS3PROEVOHC-C-11 | 0.5 | no route | Brake switch | — | |
| W76 | OEM-C-10 | MS3PROEVOHC-C-10 | 0.5 | no route | VTEC pressure switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 179679-6 | TE | S2000 2000–05 ECU harness plug B (25P, TE 040 Multi-Lock) | 1.000 | ea |
| connector | 179680-5 | TE | S2000 2000–05 ECU harness plug C (31P, TE 040 Multi-Lock) | 1.000 | ea |
| connector | 179681-6 | TE | S2000 2000–05 ECU harness plug A (32P, TE 040 Multi-Lock) | 1.000 | ea |
| connector | S2K-0005-ECU-D | Honda | S2000 2000–05 ECU plug D (P/N unknown) | 1.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (10)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | RLY1-R-OUT | RLY1-R-OUT "Relay contact output (switched +12 V to load)" drives OEM-B-12 VTEC solenoid (load 1.0 A) but its current rating is unknown. Check the ECU manual. |
| warn | NET_FAMILY | OEM-C-29 ↔ MS3PROEVOHC-B-34 | OEM-C-29 "Cam (TDC2) sensor +" [trigger_in] is wired to MS3PROEVOHC-B-34 "Digital Frequency in 1 (VR+)" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| info | NET_FAMILY | MS3PROEVOHC-B-35 ↔ MS3PROEVOHC-C-17 | MS3PROEVOHC-B-35 "Digital Frequency in 1 (VR−)" [digital_in] is wired to MS3PROEVOHC-C-17 "Sensor return" [sensor_ground]. A digital input used as a ground/identification strap (e.g. AT/MT ID is grounded on manual cars) is compatible with a sensor ground. |
| info | NET_FAMILY | OEM-A-18 ↔ MS3PROEVOHC-B-11 | OEM-A-18 "Check engine light (MIL)" [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-A-2 ↔ MS3PROEVOHC-B-12 | OEM-A-2 "Air control valve solenoid" [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-A-3 ↔ MS3PROEVOHC-B-2 | OEM-A-3 "Evap bypass solenoid" [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-A-4 ↔ MS3PROEVOHC-B-4 | OEM-A-4 "Evap canister vent shut 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-A-6 ↔ MS3PROEVOHC-B-6 | OEM-A-6 "Evap canister purge valve" [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-C-2 ↔ MS3PROEVOHC-B-8 | OEM-C-2 "Alternator control" [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 | UNMAPPED | OEM | 7 optional OEM pins are not mapped: OEM-A-10 Service check signal; OEM-A-13 Immobilizer enable signal; OEM-A-21 K-Line; OEM-A-25 Immobilizer code; OEM-B-21 Backup power (battery constant); OEM-C-22 Knock sensor; OEM-C-3 Knock sensor |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-B 21: Backup power (battery constant): AMP EFI MS3Pro EVO+ HC has no battery-constant input; not needed - OEM-C 22: Knock sensor: 2 stock pins named "Knock sensor" without a documented polarity / pairing; wire by hand - OEM-C 3: Knock sensor: 2 stock pins named "Knock sensor" without a documented polarity / pairing; wire by hand - OEM-A 21: K-Line: no free k_line on AMP EFI MS3Pro EVO+ HC - OEM-A 10: Service check signal: not classified in the library; wire by hand - OEM-A 13: Immobilizer enable signal: not classified in the library; wire by hand - OEM-A 25: Immobilizer code: not classified in the library; wire by hand - MS3PROEVOHC-B 19: Digital switched 12V in: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AEM 30-6052 Series 2 Plug & Play EMS, 2000–2005 S2000 (original ECU pinout) | https://documents.aemelectronics.com/techlibrary_30-6052_series_2_plug___play_ems.pdf | — | 2026-10-05 | 9f79620fff5a |
| 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 | 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 | vendor_doc | Haltech KB: F20C (AP1) engine | https://support.haltech.com/portal/en/kb/articles/f20c-ap1-engine | — | 2026-10-05 | e804da29d014 |
| 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 S2000 AP1 PlugIn installation manual | https://linkecu.com/documentation/S2000X.pdf | — | 2026-10-05 | d12b0ff3f006 |
| 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 |
| 2 | forum | AllPinouts: 2000–2005 Honda S2000 ECU | https://allpinouts.org/pinouts/connectors/car/2000-2005-honda-s2000-ecu/ | archive | 2026-10-05 | 81d874e0385d |
| 2 | forum | Autodata blog: ECU Pinout Honda S2000 2000-2004 | http://autodatas.blogspot.com/2012/11/ecu-pinout-honda-s2000-2000-2004.html | — | 2026-10-05 | 33b93af7640e |
| 2 | derived | Typical load estimates (relay coil ~0.2 A, high-Z injector ~1.2 A, VVT solenoid ~1 A) | — | — | — | — |