AP1 2000–03 (F20C) → AMP EFI MS3Pro Mini (auto)
AP1 2000–03 (F20C) — AMP EFI — MS3Pro Mini
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 | 49 wires · 10 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 | MS3PROMINI-A-1 | 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 | MS3PROMINI-A-22 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MS3PROMINI-A-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-C-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-C-30 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-C-31 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-C-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MS3PROMINI-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-C-19 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-C-28 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-5V1-1 | MS3PROMINI-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-C-8 | MS3PROMINI-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-C-9 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-C-20 | MS3PROMINI-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-C-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-C-29 | MS3PROMINI-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-C-4 | MS3PROMINI-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-C-12 | MS3PROMINI-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-C-13 | MS3PROMINI-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-C-14 | MS3PROMINI-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-11 | MS3PROMINI-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-3 | MS3PROMINI-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-4 | MS3PROMINI-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-B-5 | MS3PROMINI-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-15 | MS3PROMINI-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-16 | MS3PROMINI-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-17 | MS3PROMINI-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-20 | MS3PROMINI-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-28 | MS3PROMINI-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-B-12 | RLY1-R-OUT | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | SP-14V-1 | RLY1-R-IN | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | RLY1-R-COIL- | MS3PROMINI-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-C-17 | MS3PROMINI-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-C-27 | MS3PROMINI-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-23 | MS3PROMINI-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-C-15 | MS3PROMINI-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-C-16 | MS3PROMINI-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-C-26 | MS3PROMINI-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-C-25 | MS3PROMINI-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-9 | MS3PROMINI-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-C-5 | MS3PROMINI-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-24 | MS3PROMINI-A-29 | 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 | MS3PROMINI-A-1 | MS3PROMINI-A-21 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MS3PROMINI-A-1 | MS3PROMINI-A-22 | open (OL) | +12 V supply must not touch power ground | |
| 3 | RLY1-R-OUT | MS3PROMINI-A-21 | open (OL) | +12 V supply must not touch sensor ground | |
| 4 | MS3PROMINI-A-1 | MS3PROMINI-A-2 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | MS3PROMINI-A-21 | MS3PROMINI-A-2 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 6 | MS3PROMINI-A-22 | MS3PROMINI-A-2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 7 | MS3PROMINI-A-22 | RLY1-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 8 | RLY1-R-OUT | MS3PROMINI-A-2 | open (OL) | +12 V supply must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MS3PROMINI-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 12V+ switched power in | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Injector out F | — | W27 | — | 0.5 | OEM-B-11 | — | — | — |
| 11 | Injector out G | — | W28 | — | 0.5 | OEM-B-3 | — | — | — |
| 12 | Injector out H | — | W29 | — | 0.5 | OEM-B-4 | — | — | — |
| 13 | Analog in 1 | — | W40 | — | 0.5 | OEM-C-17 | — | — | — |
| 14 | Analog in 2 | — | W42 | — | 0.5 | OEM-A-23 | — | — | — |
| 15 | Analog in 3 | — | W43 | — | 0.5 | OEM-C-15 | — | — | — |
| 16 | Analog in 4 | — | W44 | — | 0.5 | OEM-C-16 | — | — | — |
| 17 | Spark out A | — | W23 | — | 0.5 | OEM-C-4 | — | — | — |
| 18 | Spark out B | — | W24 | — | 0.5 | OEM-C-12 | — | — | — |
| 19 | Spark out C | — | W25 | — | 0.5 | OEM-C-13 | — | — | — |
| 2 | +5V VREF out | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | Spark out D | — | W26 | — | 0.5 | OEM-C-14 | — | — | — |
| 21 | Sensor ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | CAN Low | — | — | — | — | — | — | — | — |
| 25 | CAN High | — | — | — | — | — | — | — | — |
| 26 | CLT in | — | W45 | — | 0.5 | OEM-C-26 | — | — | — |
| 27 | IAT in | — | W46 | — | 0.5 | OEM-C-25 | — | — | — |
| 28 | TPS in | — | W41 | — | 0.5 | OEM-C-27 | — | — | — |
| 29 | Digital switched in 1 / Flex fuel | — | W49 | — | 0.5 | OEM-A-24 | — | — | — |
| 3 | PWM out 1 / Idle | — | W32 | — | 0.5 | OEM-A-16 | — | — | — |
| 30 | CKP+ | — | W18 | — | 0.5 | OEM-C-8 | — | — | — |
| 31 | CKP- | — | — | — | — | — | — | — | — |
| 32 | CMP+ | — | W20 | — | 0.5 | OEM-C-20 | — | — | — |
| 33 | CMP- | — | W22 | — | 0.5 | OEM-C-29 | — | — | — |
| 34 | Digital frequency in 1 (Hall) | — | W47 | — | 0.5 | OEM-A-9 | — | — | — |
| 35 | Digital frequency in 2 (Hall) | — | W48 | — | 0.5 | OEM-C-5 | — | — | — |
| 4 | Fuel pump out | — | W31 | — | 0.5 | OEM-A-15 | — | — | — |
| 5 | Injector out A | — | W30 | — | 0.5 | OEM-B-5 | — | — | — |
| 6 | Injector out B | — | W33 | — | 0.5 | OEM-A-17 | — | — | — |
| 7 | Injector out C | — | W34 | — | 0.5 | OEM-A-20 | — | — | — |
| 8 | Injector out D | — | W35 | — | 0.5 | OEM-A-28 | — | — | — |
| 9 | Injector out E | — | W39 | — | 0.5 | RLY1-R-COIL- | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp gauge drive | — | — | — | — | — | — | — | — |
| 2 | Air control valve solenoid | — | — | — | — | — | — | — | — |
| 3 | Evap bypass solenoid | — | — | — | — | — | — | — | — |
| 4 | Evap canister vent shut valve | — | — | — | — | — | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | Evap canister purge valve | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Vehicle speed sensor | — | W47 | — | 0.5 | MS3PROMINI-A-34 | — | — | — |
| 10 | Service check signal | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | Immobilizer indicator light | — | — | — | — | — | — | — | — |
| 13 | Immobilizer enable signal | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | Fuel pump relay (USDM) | — | W31 | — | 0.5 | MS3PROMINI-A-4 | — | — | — |
| 16 | Fuel pump relay (JDM) | — | W32 | — | 0.5 | MS3PROMINI-A-3 | — | — | — |
| 17 | A/C clutch relay | — | W33 | — | 0.5 | MS3PROMINI-A-6 | — | — | — |
| 18 | Check engine light (MIL) | — | — | — | — | — | — | — | — |
| 19 | Tacho output | — | — | — | — | — | — | — | — |
| 20 | Radiator fan relay | — | W34 | — | 0.5 | MS3PROMINI-A-7 | — | — | — |
| 21 | K-Line | — | — | — | — | — | — | — | — |
| 22 | NC | — | — | — | — | — | — | — | — |
| 23 | Secondary O2 sensor | — | W42 | — | 0.5 | MS3PROMINI-A-14 | — | — | — |
| 24 | Starter switch signal | — | W49 | — | 0.5 | MS3PROMINI-A-29 | — | — | — |
| 25 | Immobilizer code | — | — | — | — | — | — | — | — |
| 26 | Power steering load detect | — | — | — | — | — | — | — | — |
| 27 | A/C switch (request) | — | — | — | — | — | — | — | — |
| 28 | Air pump relay | — | W35 | — | 0.5 | MS3PROMINI-A-8 | — | — | — |
| 29 | Fuel tank pressure sensor | — | — | — | — | — | — | — | — |
| 30 | Electrical load detector | — | — | — | — | — | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | Brake switch | — | — | — | — | — | — | — | — |
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 | — | W28 | — | 0.5 | MS3PROMINI-A-11 | — | — | — |
| 4 | Injector 3 | — | W29 | — | 0.5 | MS3PROMINI-A-12 | — | — | — |
| 5 | Injector 4 | — | W30 | — | 0.5 | MS3PROMINI-A-5 | — | — | — |
| 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 | — | W27 | — | 0.5 | MS3PROMINI-A-10 | — | — | — |
| 12 | VTEC solenoid | — | W36 | — | 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 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 2 | Alternator control | — | — | — | — | — | — | — | — |
| 3 | Knock sensor | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 1 | — | W23 | — | 0.5 | MS3PROMINI-A-17 | — | — | — |
| 5 | Alternator FR signal | — | W48 | — | 0.5 | MS3PROMINI-A-35 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | Sensor ground 1 | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Crank sensor + (CKP+) | — | W18 | — | 0.5 | MS3PROMINI-A-30 | — | — | — |
| 9 | Crank sensor − (CKP−) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | VTEC pressure switch | — | — | — | — | — | — | — | — |
| 11 | Secondary O2 heater control | — | — | — | — | — | — | — | — |
| 12 | Ignition coil 2 | — | W24 | — | 0.5 | MS3PROMINI-A-18 | — | — | — |
| 13 | Ignition coil 3 | — | W25 | — | 0.5 | MS3PROMINI-A-19 | — | — | — |
| 14 | Ignition coil 4 | — | W26 | — | 0.5 | MS3PROMINI-A-20 | — | — | — |
| 15 | Secondary O2 sensor | — | W43 | — | 0.5 | MS3PROMINI-A-15 | — | — | — |
| 16 | Primary O2 sensor | — | W44 | — | 0.5 | MS3PROMINI-A-16 | — | — | — |
| 17 | MAP sensor | — | W40 | — | 0.5 | MS3PROMINI-A-13 | — | — | — |
| 18 | Sensor ground 2 | — | W10 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 5V supply 1 (MAP) | — | W15 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | Cam (TDC1) sensor + | — | W20 | — | 0.5 | MS3PROMINI-A-32 | — | — | — |
| 21 | Cam (TDC1) sensor − | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Knock sensor | — | — | — | — | — | — | — | — |
| 23 | NC | — | — | — | — | — | — | — | — |
| 24 | Air pump electric current sensor | — | — | — | — | — | — | — | — |
| 25 | Intake air temp sensor | — | W46 | — | 0.5 | MS3PROMINI-A-27 | — | — | — |
| 26 | Coolant temp sensor | — | W45 | — | 0.5 | MS3PROMINI-A-26 | — | — | — |
| 27 | Throttle position sensor | — | W41 | — | 0.5 | MS3PROMINI-A-28 | — | — | — |
| 28 | Sensor 5V supply 2 | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 29 | Cam (TDC2) sensor + | — | W22 | — | 0.5 | MS3PROMINI-A-33 | — | — | — |
| 30 | Cam (TDC2) sensor − | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Timing ground | — | W12 | — | 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) | — | W38 | — | 0.5 | SP-14V-1 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W39 | — | 0.5 | MS3PROMINI-A-9 | — | — | — |
| IN | Relay contact input (switched +12 V) | — | W37 | — | 0.5 | SP-14V-1 | — | — | — |
| OUT | Relay contact output (switched +12 V to load) | — | W36 | — | 0.5 | OEM-B-12 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | MS3PROMINI-A-21 | — | — | — |
| 1 | — | — | W10 | — | 0.5 | OEM-C-18 | — | — | — |
| 1 | — | — | W11 | — | 0.5 | OEM-C-30 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-C-31 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-C-7 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-C-9 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-C-21 | — | — | — |
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 | MS3PROMINI-A-1 | — | — | — |
| 1 | — | — | W37 | — | 0.5 | RLY1-R-IN | — | — | — |
| 1 | — | — | W38 | — | 0.5 | RLY1-R-COIL+ | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-C-19 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-C-28 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MS3PROMINI-A-2 | — | — | — |
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 | MS3PROMINI-A-22 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROMINI-A-23 | — | — | — |
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 | — | — | — | corroborated | |
| OEM-A-10 | Service check signal | — | — | — | — | single_source | |
| OEM-A-11 | NC | — | — | — | — | unverified | |
| OEM-A-12 | Immobilizer indicator light | 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 | MS3PROMINI-A-4 | Fuel pump out | low_side_out | corroborated | |
| OEM-A-16 | Fuel pump relay (JDM) | low_side_out | MS3PROMINI-A-3 | PWM out 1 / Idle | low_side_out | single_source | |
| OEM-A-17 | A/C clutch relay | low_side_out | MS3PROMINI-A-6 | Injector out B | injector_out | corroborated | |
| OEM-A-18 | Check engine light (MIL) | low_side_out | — | — | — | corroborated | |
| OEM-A-19 | Tacho output | tacho_out | — | — | — | corroborated | |
| OEM-A-2 | Air control valve solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-20 | Radiator fan relay | low_side_out | MS3PROMINI-A-7 | Injector out C | injector_out | corroborated | |
| OEM-A-21 | K-Line | serial | — | — | — | single_source | |
| OEM-A-22 | NC | — | — | — | — | unverified | |
| OEM-A-23 | Secondary O2 sensor | lambda_nb_in | MS3PROMINI-A-14 | Analog in 2 | analog_in | single_source | |
| OEM-A-24 | Starter switch signal | digital_in | MS3PROMINI-A-29 | Digital switched in 1 / Flex fuel | digital_in | corroborated | |
| OEM-A-25 | Immobilizer code | — | — | — | — | single_source | |
| OEM-A-26 | Power steering load detect | digital_in | — | — | — | corroborated | |
| OEM-A-27 | A/C switch (request) | digital_in | — | — | — | corroborated | |
| OEM-A-28 | Air pump relay | low_side_out | MS3PROMINI-A-8 | Injector out D | injector_out | corroborated | |
| OEM-A-29 | Fuel tank pressure sensor | analog_in | — | — | — | corroborated | |
| OEM-A-3 | Evap bypass solenoid | low_side_out | — | — | — | single_source | |
| OEM-A-30 | Electrical load detector | analog_in | — | — | — | corroborated | |
| OEM-A-31 | NC | — | — | — | — | unverified | |
| OEM-A-32 | Brake switch | digital_in | — | — | — | corroborated | |
| OEM-A-4 | Evap canister vent shut valve | low_side_out | — | — | — | single_source | |
| OEM-A-5 | NC | — | — | — | — | unverified | |
| OEM-A-6 | Evap canister purge valve | low_side_out | — | — | — | single_source | |
| OEM-A-7 | NC | — | — | — | — | unverified | |
| OEM-A-8 | NC | — | — | — | — | unverified | |
| OEM-A-9 | Vehicle speed sensor | digital_in | MS3PROMINI-A-34 | Digital frequency in 1 (Hall) | digital_in | corroborated | |
| OEM-B-1 | Power source 1 (main relay) | power_in | MS3PROMINI-A-1 + 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 | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-B-11 | Injector 1 | injector_out | MS3PROMINI-A-10 | Injector out F | 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 | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | corroborated | |
| OEM-B-20 | Ground | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-B-21 | Backup power (battery constant) | power_in | — | — | — | single_source | |
| OEM-B-22 | Ground | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-B-23 | Idle air control valve | low_side_out | — | — | — | corroborated | |
| OEM-B-24 | NC | — | — | — | — | unverified | |
| OEM-B-25 | NC | — | — | — | — | unverified | |
| OEM-B-3 | Injector 2 | injector_out | MS3PROMINI-A-11 | Injector out G | injector_out | corroborated | |
| OEM-B-4 | Injector 3 | injector_out | MS3PROMINI-A-12 | Injector out H | injector_out | corroborated | |
| OEM-B-5 | Injector 4 | injector_out | MS3PROMINI-A-5 | Injector out A | 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 | MS3PROMINI-A-1 + 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 | — | — | — | corroborated | |
| OEM-C-10 | VTEC pressure switch | digital_in | — | — | — | corroborated | |
| OEM-C-11 | Secondary O2 heater control | low_side_out | — | — | — | single_source | |
| OEM-C-12 | Ignition coil 2 | ignition_out | MS3PROMINI-A-18 | Spark out B | ignition_out | corroborated | |
| OEM-C-13 | Ignition coil 3 | ignition_out | MS3PROMINI-A-19 | Spark out C | ignition_out | corroborated | |
| OEM-C-14 | Ignition coil 4 | ignition_out | MS3PROMINI-A-20 | Spark out D | ignition_out | corroborated | |
| OEM-C-15 | Secondary O2 sensor | lambda_nb_in | MS3PROMINI-A-15 | Analog in 3 | analog_in | corroborated | |
| OEM-C-16 | Primary O2 sensor | lambda_nb_in | MS3PROMINI-A-16 | Analog in 4 | analog_in | corroborated | |
| OEM-C-17 | MAP sensor | analog_in | MS3PROMINI-A-13 | Analog in 1 | analog_in | corroborated | |
| OEM-C-18 | Sensor ground 2 | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-C-19 | Sensor 5V supply 1 (MAP) | vref | MS3PROMINI-A-2 | +5V VREF out | vref | corroborated | |
| OEM-C-2 | Alternator control | low_side_out | — | — | — | single_source | |
| OEM-C-20 | Cam (TDC1) sensor + | trigger_in | MS3PROMINI-A-32 | CMP+ | trigger_in | corroborated | |
| OEM-C-21 | Cam (TDC1) sensor − | trigger_in | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-C-22 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-23 | NC | — | — | — | — | unverified | |
| OEM-C-24 | Air pump electric current sensor | analog_in | — | — | — | single_source | |
| OEM-C-25 | Intake air temp sensor | temp_in | MS3PROMINI-A-27 | IAT in | temp_in | corroborated | |
| OEM-C-26 | Coolant temp sensor | temp_in | MS3PROMINI-A-26 | CLT in | temp_in | corroborated | |
| OEM-C-27 | Throttle position sensor | analog_in | MS3PROMINI-A-28 | TPS in | analog_in | corroborated | |
| OEM-C-28 | Sensor 5V supply 2 | vref | MS3PROMINI-A-2 | +5V VREF out | vref | corroborated | |
| OEM-C-29 | Cam (TDC2) sensor + | trigger_in | MS3PROMINI-A-33 | CMP- | trigger_in | corroborated | |
| OEM-C-3 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-30 | Cam (TDC2) sensor − | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-C-31 | Timing ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | single_source | |
| OEM-C-4 | Ignition coil 1 | ignition_out | MS3PROMINI-A-17 | Spark out A | ignition_out | corroborated | |
| OEM-C-5 | Alternator FR signal | digital_in | MS3PROMINI-A-35 | Digital frequency in 2 (Hall) | digital_in | single_source | |
| OEM-C-6 | NC | — | — | — | — | unverified | |
| OEM-C-7 | Sensor ground 1 | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-C-8 | Crank sensor + (CKP+) | trigger_in | MS3PROMINI-A-30 | CKP+ | trigger_in | corroborated | |
| OEM-C-9 | Crank sensor − (CKP−) | trigger_in | MS3PROMINI-A-21 | Sensor ground | sensor_ground | 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 | MS3PROMINI-A-1 | 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 | MS3PROMINI-A-22 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | MS3PROMINI-A-23 | 0.85 | no route | Power ground | — | |
| W10 | OEM-C-18 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W11 | OEM-C-30 | SP-0V-1 | 0.5 | no route | Cam (TDC2) sensor − | — | |
| W12 | OEM-C-31 | SP-0V-1 | 0.5 | no route | Timing ground | — | |
| W13 | OEM-C-7 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W14 | SP-0V-1 | MS3PROMINI-A-21 | 0.5 | no route | Sensor ground | — | |
| W15 | OEM-C-19 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (MAP) | — | |
| W16 | OEM-C-28 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 | — | |
| W17 | SP-5V1-1 | MS3PROMINI-A-2 | 0.5 | no route | +5V VREF out | — | |
| W18 | OEM-C-8 | MS3PROMINI-A-30 | 0.5 | no route | Crank sensor + (CKP+) | — | |
| W19 | OEM-C-9 | SP-0V-1 | 0.5 | no route | Crank sensor − (CKP−) | — | |
| W20 | OEM-C-20 | MS3PROMINI-A-32 | 0.5 | no route | Cam (TDC1) sensor + | — | |
| W21 | OEM-C-21 | SP-0V-1 | 0.5 | no route | Cam (TDC1) sensor − | — | |
| W22 | OEM-C-29 | MS3PROMINI-A-33 | 0.5 | no route | Cam (TDC2) sensor + | — | |
| W23 | OEM-C-4 | MS3PROMINI-A-17 | 0.5 | no route | Ignition coil 1 | — | |
| W24 | OEM-C-12 | MS3PROMINI-A-18 | 0.5 | no route | Ignition coil 2 | — | |
| W25 | OEM-C-13 | MS3PROMINI-A-19 | 0.5 | no route | Ignition coil 3 | — | |
| W26 | OEM-C-14 | MS3PROMINI-A-20 | 0.5 | no route | Ignition coil 4 | — | |
| W27 | OEM-B-11 | MS3PROMINI-A-10 | 0.5 | no route | Injector 1 | — | |
| W28 | OEM-B-3 | MS3PROMINI-A-11 | 0.5 | no route | Injector 2 | — | |
| W29 | OEM-B-4 | MS3PROMINI-A-12 | 0.5 | no route | Injector 3 | — | |
| W30 | OEM-B-5 | MS3PROMINI-A-5 | 0.5 | no route | Injector 4 | — | |
| W31 | OEM-A-15 | MS3PROMINI-A-4 | 0.5 | no route | Fuel pump relay (USDM) | — | |
| W32 | OEM-A-16 | MS3PROMINI-A-3 | 0.5 | no route | Fuel pump relay (JDM) | — | |
| W33 | OEM-A-17 | MS3PROMINI-A-6 | 0.5 | no route | A/C clutch relay | — | |
| W34 | OEM-A-20 | MS3PROMINI-A-7 | 0.5 | no route | Radiator fan relay | — | |
| W35 | OEM-A-28 | MS3PROMINI-A-8 | 0.5 | no route | Air pump relay | — | |
| W36 | OEM-B-12 | RLY1-R-OUT | 0.5 | no route | VTEC solenoid | — | |
| W37 | SP-14V-1 | RLY1-R-IN | 0.5 | no route | Relay contact input (switched +12 V) | — | |
| W38 | SP-14V-1 | RLY1-R-COIL+ | 0.5 | no route | Relay coil positive (switched +12 V) | — | |
| W39 | RLY1-R-COIL- | MS3PROMINI-A-9 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W40 | OEM-C-17 | MS3PROMINI-A-13 | 0.5 | no route | MAP sensor | — | |
| W41 | OEM-C-27 | MS3PROMINI-A-28 | 0.5 | no route | Throttle position sensor | — | |
| W42 | OEM-A-23 | MS3PROMINI-A-14 | 0.5 | no route | Secondary O2 sensor | — | |
| W43 | OEM-C-15 | MS3PROMINI-A-15 | 0.5 | no route | Secondary O2 sensor | — | |
| W44 | OEM-C-16 | MS3PROMINI-A-16 | 0.5 | no route | Primary O2 sensor | — | |
| W45 | OEM-C-26 | MS3PROMINI-A-26 | 0.5 | no route | Coolant temp sensor | — | |
| W46 | OEM-C-25 | MS3PROMINI-A-27 | 0.5 | no route | Intake air temp sensor | — | |
| W47 | OEM-A-9 | MS3PROMINI-A-34 | 0.5 | no route | Vehicle speed sensor | — | |
| W48 | OEM-C-5 | MS3PROMINI-A-35 | 0.5 | no route | Alternator FR signal | — | |
| W49 | OEM-A-24 | MS3PROMINI-A-29 | 0.5 | no route | Starter switch signal | — |
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 (7)
| 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 | SUPPLY_GROUP | MS3PROMINI-A-2 + OEM-C-19 + OEM-C-28 + SP-5V1-1 | Supplies meant to stay independent share one net: OEM-C-19 [s2k_vcc1], OEM-C-28 [s2k_vcc2]. The new ECU has no free 5 V reference, so they share one: normal on a standalone, but a short on any of these sensors drops them all. |
| info | NET_FAMILY | OEM-A-17 ↔ MS3PROMINI-A-6 | OEM-A-17 "A/C clutch relay" [low_side_out] is wired to MS3PROMINI-A-6 "Injector out B" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-20 ↔ MS3PROMINI-A-7 | OEM-A-20 "Radiator fan relay" [low_side_out] is wired to MS3PROMINI-A-7 "Injector out C" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-28 ↔ MS3PROMINI-A-8 | OEM-A-28 "Air pump relay" [low_side_out] is wired to MS3PROMINI-A-8 "Injector out D" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-C-7 ↔ OEM-C-21 | OEM-C-7 "Sensor ground 1" [sensor_ground] is wired to OEM-C-21 "Cam (TDC1) sensor −" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 26 optional OEM pins are not mapped: OEM-A-1 Coolant temp gauge drive; OEM-A-10 Service check signal; OEM-A-12 Immobilizer indicator light; OEM-A-13 Immobilizer enable signal; OEM-A-18 Check engine light (MIL); OEM-A-19 Tacho output; OEM-A-2 Air control valve solenoid; OEM-A-21 K-Line; OEM-A-25 Immobilizer code; OEM-A-26 Power steering load detect; OEM-A-27 A/C switch (request); OEM-A-29 Fuel tank pressure sensor; OEM-A-3 Evap bypass solenoid; OEM-A-30 Electrical load detector; OEM-A-32 Brake switch; OEM-A-4 Evap canister vent shut valve; OEM-A-6 Evap canister purge valve; OEM-B-21 Backup power (battery constant); OEM-B-23 Idle air control valve; OEM-C-1 Primary O2 heater; OEM-C-10 VTEC pressure switch; OEM-C-11 Secondary O2 heater control; OEM-C-2 Alternator control; OEM-C-22 Knock sensor; OEM-C-24 Air pump electric current 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 Mini has no battery-constant input; not needed - OEM-C 22: Knock sensor: no free knock input on AMP EFI MS3Pro Mini - OEM-C 3: Knock sensor: no free knock input on AMP EFI MS3Pro Mini - OEM-C 1: Primary O2 heater: no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-C 11: Secondary O2 heater control: no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-B 23: Idle air control valve: no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on AMP EFI MS3Pro Mini - OEM-A 1: Coolant temp gauge drive: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 12: Immobilizer indicator light: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 18: Check engine light (MIL): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 2: Air control valve solenoid: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 3: Evap bypass solenoid: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 4: Evap canister vent shut valve: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 6: Evap canister purge valve: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-C 2: Alternator control: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-A 19: Tacho output: no free tacho/frequency_out/low_side/ls_hs on AMP EFI MS3Pro Mini - OEM-A 29: Fuel tank pressure sensor: no free analog_0_5 on AMP EFI MS3Pro Mini - OEM-A 30: Electrical load detector: no free analog_0_5 on AMP EFI MS3Pro Mini - OEM-C 24: Air pump electric current sensor: no free analog_0_5 on AMP EFI MS3Pro Mini - OEM-A 26: Power steering load detect: no free switch_in/frequency_in/analog_0_5 on AMP EFI MS3Pro Mini - OEM-A 27: A/C switch (request): no free switch_in/frequency_in/analog_0_5 on AMP EFI MS3Pro Mini - OEM-A 32: Brake switch: no free switch_in/frequency_in/analog_0_5 on AMP EFI MS3Pro Mini - OEM-C 10: VTEC pressure switch: no free switch_in/frequency_in/analog_0_5 on AMP EFI MS3Pro Mini - OEM-A 21: K-Line: no free k_line on AMP EFI MS3Pro Mini - 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
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 Mini manual (fw 1.6.1) pinout & output ratings | https://cdn.shopify.com/s/files/1/0960/0014/7754/files/MS3Pro_User_Manual_Firmware_1.6.1_Mini.pdf?v=1760643335 | archive | 2026-10-05 | bed7d8ae8408 |
| 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) | — | — | — | — |