AP1 2000–03 (F20C) → AMP EFI MS3Pro Ultimate (auto)
AP1 2000–03 (F20C) — AMP EFI — MS3Pro Ultimate
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-04
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MS3PROULTIMA-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | High current out 1 | — | W49 | — | 0.5 | OEM-A-1 | — | — | — |
| 10 | MAT in | — | W63 | — | 0.5 | OEM-C-26 | — | — | — |
| 11 | CLT in | — | W64 | — | 0.5 | OEM-C-25 | — | — | — |
| 12 | Analog In 6 | — | W67 | — | 0.5 | OEM-C-24 | — | — | — |
| 13 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W42 | — | 0.5 | OEM-A-16 | — | — | — |
| 15 | CKP− | — | W28 | — | 0.5 | OEM-C-9 | — | — | — |
| 16 | Logic ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | Analog In 7 | — | — | — | — | — | — | — | — |
| 18 | Sensor return | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Analog in 1 | — | W58 | — | 0.5 | OEM-C-17 | — | — | — |
| 2 | High current out 2 | — | W50 | — | 0.5 | OEM-A-12 | — | — | — |
| 20 | Analog in 2 | — | W61 | — | 0.5 | OEM-C-15 | — | — | — |
| 21 | Analog in 3 | — | W62 | — | 0.5 | OEM-C-16 | — | — | — |
| 22 | Analog In 4 | — | W65 | — | 0.5 | OEM-A-29 | — | — | — |
| 23 | Analog In 5 | — | W66 | — | 0.5 | OEM-A-30 | — | — | — |
| 24 | Tach out | — | W57 | — | 0.5 | OEM-A-19 | — | — | — |
| 25 | O2 in | — | W60 | — | 0.5 | OEM-A-23 | — | — | — |
| 26 | CMP+ | — | W31 | — | 0.5 | OEM-C-20 | — | — | — |
| 27 | CMP− | — | W30 | — | 0.5 | OEM-C-21 | — | — | — |
| 28 | Fuel pump relay out | — | W41 | — | 0.5 | OEM-A-15 | — | — | — |
| 29 | PWM out 2 | — | W44 | — | 0.5 | OEM-A-20 | — | — | — |
| 3 | Injector out J | — | W37 | — | 0.5 | OEM-B-11 | — | — | — |
| 30 | PWM out 3 | — | W46 | — | 0.5 | OEM-C-1 | — | — | — |
| 31 | Knock in 1 | — | — | — | — | — | — | — | — |
| 32 | Digital switched in 1 | — | W70 | — | 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 | — | W38 | — | 0.5 | OEM-B-3 | — | — | — |
| 5 | High current out 3 | — | W51 | — | 0.5 | OEM-A-18 | — | — | — |
| 6 | CKP+ | — | W29 | — | 0.5 | OEM-C-8 | — | — | — |
| 7 | Knock In 2 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out 1 | — | W26 | — | 0.5 | OEM-C-19 | — | — | — |
| 9 | TPS in | — | W59 | — | 0.5 | OEM-C-27 | — | — | — |
MS3PROULTIMA-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | W39 | — | 0.5 | OEM-B-4 | — | — | — |
| 10 | Injector out F | — | W40 | — | 0.5 | OEM-B-5 | — | — | — |
| 11 | Injector out G | — | W52 | — | 0.5 | OEM-A-2 | — | — | — |
| 12 | Injector out H | — | W53 | — | 0.5 | OEM-A-3 | — | — | — |
| 13 | Spark out G | — | W33 | — | 0.5 | OEM-C-4 | — | — | — |
| 14 | Spark out E | — | W34 | — | 0.5 | OEM-C-12 | — | — | — |
| 15 | Spark out C | — | W35 | — | 0.5 | OEM-C-13 | — | — | — |
| 16 | Spark out H | — | W36 | — | 0.5 | OEM-C-14 | — | — | — |
| 17 | Digital frequency in 2 | — | — | — | — | — | — | — | — |
| 18 | Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Digital switched 12V in | — | — | — | — | — | — | — | — |
| 2 | Injector out B | — | W54 | — | 0.5 | OEM-A-4 | — | — | — |
| 20 | Digital switched in 2 | — | W71 | — | 0.5 | OEM-A-26 | — | — | — |
| 21 | Digital frequency in 3 | — | — | — | — | — | — | — | — |
| 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 | — | W32 | — | 0.5 | OEM-C-29 | — | — | — |
| 29 | Digital switched in 3 | — | W72 | — | 0.5 | OEM-A-27 | — | — | — |
| 3 | Ground | — | W11 | — | 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+ | — | W68 | — | 0.5 | OEM-A-9 | — | — | — |
| 35 | Digital Frequency in 1 VR− | — | W69 | — | 0.5 | OEM-C-5 | — | — | — |
| 4 | Injector out C | — | W55 | — | 0.5 | OEM-A-6 | — | — | — |
| 5 | Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | W56 | — | 0.5 | OEM-C-2 | — | — | — |
| 7 | Ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | — | — | — | — | — | — | — |
| 9 | Ground | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
MS3PROULTIMA-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM out 5 | — | W48 | — | 0.5 | OEM-B-23 | — | — | — |
| 10 | Digital switched in 5 | — | W74 | — | 0.5 | OEM-C-10 | — | — | — |
| 11 | Digital switched in 4 | — | W73 | — | 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 | — | W27 | — | 0.5 | OEM-C-28 | — | — | — |
| 16 | Fuel only battery 12V+ | — | — | — | — | — | — | — | — |
| 17 | Sensor return | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Sensor return | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor return | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | PWM out 4 | — | W47 | — | 0.5 | OEM-C-11 | — | — | — |
| 20 | Sensor return | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Sensor return | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | 5V+ VREF out 1 | — | — | — | — | — | — | — | — |
| 23 | Keep alive power | — | W4 | — | 0.85 | OEM-B-21 | — | — | — |
| 3 | Digital out 2 | — | W45 | — | 0.5 | OEM-A-28 | — | — | — |
| 4 | Digital out 1 | — | W43 | — | 0.5 | OEM-A-17 | — | — | — |
| 5 | Digital I/O 4 | — | — | — | — | — | — | — | — |
| 6 | Digital I/O 2 | — | — | — | — | — | — | — | — |
| 7 | Analog in 8 | — | — | — | — | — | — | — | — |
| 8 | 5V+ VREF out 2 | — | — | — | — | — | — | — | — |
| 9 | Fuel only coil negative | — | — | — | — | — | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coolant temp gauge drive | — | W49 | — | 0.5 | MS3PROULTIMA-A-1 | — | — | — |
| 2 | Air control valve solenoid | — | W52 | — | 0.5 | MS3PROULTIMA-B-11 | — | — | — |
| 3 | Evap bypass solenoid | — | W53 | — | 0.5 | MS3PROULTIMA-B-12 | — | — | — |
| 4 | Evap canister vent shut valve | — | W54 | — | 0.5 | MS3PROULTIMA-B-2 | — | — | — |
| 5 | NC | — | — | — | — | — | — | — | — |
| 6 | Evap canister purge valve | — | W55 | — | 0.5 | MS3PROULTIMA-B-4 | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Vehicle speed sensor | — | W68 | — | 0.5 | MS3PROULTIMA-B-34 | — | — | — |
| 10 | Service check signal | — | — | — | — | — | — | — | — |
| 11 | NC | — | — | — | — | — | — | — | — |
| 12 | Immobilizer indicator light | — | W50 | — | 0.5 | MS3PROULTIMA-A-2 | — | — | — |
| 13 | Immobilizer enable signal | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | Fuel pump relay (USDM) | — | W41 | — | 0.5 | MS3PROULTIMA-A-28 | — | — | — |
| 16 | Fuel pump relay (JDM) | — | W42 | — | 0.5 | MS3PROULTIMA-A-14 | — | — | — |
| 17 | A/C clutch relay | — | W43 | — | 0.5 | MS3PROULTIMA-C-4 | — | — | — |
| 18 | Check engine light (MIL) | — | W51 | — | 0.5 | MS3PROULTIMA-A-5 | — | — | — |
| 19 | Tacho output | — | W57 | — | 0.5 | MS3PROULTIMA-A-24 | — | — | — |
| 20 | Radiator fan relay | — | W44 | — | 0.5 | MS3PROULTIMA-A-29 | — | — | — |
| 21 | K-Line | — | — | — | — | — | — | — | — |
| 22 | NC | — | — | — | — | — | — | — | — |
| 23 | Secondary O2 sensor | — | W60 | — | 0.5 | MS3PROULTIMA-A-25 | — | — | — |
| 24 | Starter switch signal | — | W70 | — | 0.5 | MS3PROULTIMA-A-32 | — | — | — |
| 25 | Immobilizer code | — | — | — | — | — | — | — | — |
| 26 | Power steering load detect | — | W71 | — | 0.5 | MS3PROULTIMA-B-20 | — | — | — |
| 27 | A/C switch (request) | — | W72 | — | 0.5 | MS3PROULTIMA-B-29 | — | — | — |
| 28 | Air pump relay | — | W45 | — | 0.5 | MS3PROULTIMA-C-3 | — | — | — |
| 29 | Fuel tank pressure sensor | — | W65 | — | 0.5 | MS3PROULTIMA-A-22 | — | — | — |
| 30 | Electrical load detector | — | W66 | — | 0.5 | MS3PROULTIMA-A-23 | — | — | — |
| 31 | NC | — | — | — | — | — | — | — | — |
| 32 | Brake switch | — | W73 | — | 0.5 | MS3PROULTIMA-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 | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | Injector 2 | — | W38 | — | 0.5 | MS3PROULTIMA-A-4 | — | — | — |
| 4 | Injector 3 | — | W39 | — | 0.5 | MS3PROULTIMA-B-1 | — | — | — |
| 5 | Injector 4 | — | W40 | — | 0.5 | MS3PROULTIMA-B-10 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | NC | — | — | — | — | — | — | — | — |
| 8 | NC | — | — | — | — | — | — | — | — |
| 9 | Power source 2 (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Power ground 2 | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Injector 1 | — | W37 | — | 0.5 | MS3PROULTIMA-A-3 | — | — | — |
| 12 | VTEC solenoid | — | — | — | — | — | — | — | — |
| 13 | NC | — | — | — | — | — | — | — | — |
| 14 | NC | — | — | — | — | — | — | — | — |
| 15 | NC | — | — | — | — | — | — | — | — |
| 16 | NC | — | — | — | — | — | — | — | — |
| 17 | NC | — | — | — | — | — | — | — | — |
| 18 | NC | — | — | — | — | — | — | — | — |
| 19 | NC | — | — | — | — | — | — | — | — |
| 20 | Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | Backup power (battery constant) | — | W4 | — | 0.85 | MS3PROULTIMA-C-23 | — | — | — |
| 22 | Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Idle air control valve | — | W48 | — | 0.5 | MS3PROULTIMA-C-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 | — | W46 | — | 0.5 | MS3PROULTIMA-A-30 | — | — | — |
| 2 | Alternator control | — | W56 | — | 0.5 | MS3PROULTIMA-B-6 | — | — | — |
| 3 | Knock sensor | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 1 | — | W33 | — | 0.5 | MS3PROULTIMA-B-13 | — | — | — |
| 5 | Alternator FR signal | — | W69 | — | 0.5 | MS3PROULTIMA-B-35 | — | — | — |
| 6 | NC | — | — | — | — | — | — | — | — |
| 7 | Sensor ground 1 | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Crank sensor + (CKP+) | — | W29 | — | 0.5 | MS3PROULTIMA-A-6 | — | — | — |
| 9 | Crank sensor − (CKP−) | — | W28 | — | 0.5 | MS3PROULTIMA-A-15 | — | — | — |
| 10 | VTEC pressure switch | — | W74 | — | 0.5 | MS3PROULTIMA-C-10 | — | — | — |
| 11 | Secondary O2 heater control | — | W47 | — | 0.5 | MS3PROULTIMA-C-2 | — | — | — |
| 12 | Ignition coil 2 | — | W34 | — | 0.5 | MS3PROULTIMA-B-14 | — | — | — |
| 13 | Ignition coil 3 | — | W35 | — | 0.5 | MS3PROULTIMA-B-15 | — | — | — |
| 14 | Ignition coil 4 | — | W36 | — | 0.5 | MS3PROULTIMA-B-16 | — | — | — |
| 15 | Secondary O2 sensor | — | W61 | — | 0.5 | MS3PROULTIMA-A-20 | — | — | — |
| 16 | Primary O2 sensor | — | W62 | — | 0.5 | MS3PROULTIMA-A-21 | — | — | — |
| 17 | MAP sensor | — | W58 | — | 0.5 | MS3PROULTIMA-A-19 | — | — | — |
| 18 | Sensor ground 2 | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 5V supply 1 (MAP) | — | W26 | — | 0.5 | MS3PROULTIMA-A-8 | — | — | — |
| 20 | Cam (TDC1) sensor + | — | W31 | — | 0.5 | MS3PROULTIMA-A-26 | — | — | — |
| 21 | Cam (TDC1) sensor − | — | W30 | — | 0.5 | MS3PROULTIMA-A-27 | — | — | — |
| 22 | Knock sensor | — | — | — | — | — | — | — | — |
| 23 | NC | — | — | — | — | — | — | — | — |
| 24 | Air pump electric current sensor | — | W67 | — | 0.5 | MS3PROULTIMA-A-12 | — | — | — |
| 25 | Intake air temp sensor | — | W64 | — | 0.5 | MS3PROULTIMA-A-11 | — | — | — |
| 26 | Coolant temp sensor | — | W63 | — | 0.5 | MS3PROULTIMA-A-10 | — | — | — |
| 27 | Throttle position sensor | — | W59 | — | 0.5 | MS3PROULTIMA-A-9 | — | — | — |
| 28 | Sensor 5V supply 2 | — | W27 | — | 0.5 | MS3PROULTIMA-C-15 | — | — | — |
| 29 | Cam (TDC2) sensor + | — | W32 | — | 0.5 | MS3PROULTIMA-B-28 | — | — | — |
| 30 | Cam (TDC2) sensor − | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | Timing ground | — | W17 | — | 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 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W22 | — | 0.5 | MS3PROULTIMA-C-18 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-C-18 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-C-30 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-C-31 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-C-7 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MS3PROULTIMA-A-16 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MS3PROULTIMA-A-18 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | MS3PROULTIMA-C-17 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | MS3PROULTIMA-C-19 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | MS3PROULTIMA-C-20 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | MS3PROULTIMA-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 | MS3PROULTIMA-A-35 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-B-10 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-B-2 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-B-20 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-B-22 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROULTIMA-A-13 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MS3PROULTIMA-B-18 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MS3PROULTIMA-B-3 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | MS3PROULTIMA-B-5 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | MS3PROULTIMA-B-7 | — | — | — |
| 1 | — | — | W14 | — | 0.85 | MS3PROULTIMA-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 | MS3PROULTIMA-A-1 | High current out 1 | 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 | MS3PROULTIMA-A-2 | High current out 2 | 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 | MS3PROULTIMA-A-28 | Fuel pump relay out | low_side_out | corroborated | |
| OEM-A-16 | Fuel pump relay (JDM) | low_side_out | MS3PROULTIMA-A-14 | PWM / Idle Out 1 | low_side_out | single_source | |
| OEM-A-17 | A/C clutch relay | low_side_out | MS3PROULTIMA-C-4 | Digital out 1 | low_side_out | corroborated | |
| OEM-A-18 | Check engine light (MIL) | low_side_out | MS3PROULTIMA-A-5 | High current out 3 | low_side_out | corroborated | |
| OEM-A-19 | Tacho output | tacho_out | MS3PROULTIMA-A-24 | Tach out | tacho_out | corroborated | |
| OEM-A-2 | Air control valve solenoid | low_side_out | MS3PROULTIMA-B-11 | Injector out G | injector_out | single_source | |
| OEM-A-20 | Radiator fan relay | low_side_out | MS3PROULTIMA-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 | MS3PROULTIMA-A-25 | O2 in | lambda_nb_in | single_source | |
| OEM-A-24 | Starter switch signal | digital_in | MS3PROULTIMA-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 | MS3PROULTIMA-B-20 | Digital switched in 2 | digital_in | corroborated | |
| OEM-A-27 | A/C switch (request) | digital_in | MS3PROULTIMA-B-29 | Digital switched in 3 | digital_in | corroborated | |
| OEM-A-28 | Air pump relay | low_side_out | MS3PROULTIMA-C-3 | Digital out 2 | low_side_out | corroborated | |
| OEM-A-29 | Fuel tank pressure sensor | analog_in | MS3PROULTIMA-A-22 | Analog In 4 | analog_in | corroborated | |
| OEM-A-3 | Evap bypass solenoid | low_side_out | MS3PROULTIMA-B-12 | Injector out H | injector_out | single_source | |
| OEM-A-30 | Electrical load detector | analog_in | MS3PROULTIMA-A-23 | Analog In 5 | analog_in | corroborated | |
| OEM-A-31 | NC | — | — | — | — | unverified | |
| OEM-A-32 | Brake switch | digital_in | MS3PROULTIMA-C-11 | Digital switched in 4 | digital_in | corroborated | |
| OEM-A-4 | Evap canister vent shut valve | low_side_out | MS3PROULTIMA-B-2 | Injector out B | injector_out | single_source | |
| OEM-A-5 | NC | — | — | — | — | unverified | |
| OEM-A-6 | Evap canister purge valve | low_side_out | MS3PROULTIMA-B-4 | Injector out C | injector_out | single_source | |
| OEM-A-7 | NC | — | — | — | — | unverified | |
| OEM-A-8 | NC | — | — | — | — | unverified | |
| OEM-A-9 | Vehicle speed sensor | digital_in | MS3PROULTIMA-B-34 | Digital Frequency in 1 VR+ | digital_in | corroborated | |
| OEM-B-1 | Power source 1 (main relay) | power_in | MS3PROULTIMA-A-35 | 12V+ switched power in | power_in | corroborated | |
| OEM-B-10 | Power ground 2 | ground | MS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9 | Power ground + Ground + Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-B-11 | Injector 1 | injector_out | MS3PROULTIMA-A-3 | Injector out J | injector_out | corroborated | |
| OEM-B-12 | VTEC solenoid | high_side_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 | MS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9 | Power ground + Ground + Ground + Ground + Ground + Ground | ground | corroborated | |
| OEM-B-20 | Ground | ground | MS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9 | Power ground + Ground + Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-B-21 | Backup power (battery constant) | power_in | MS3PROULTIMA-C-23 | Keep alive power | power_in | single_source | |
| OEM-B-22 | Ground | ground | MS3PROULTIMA-A-13 + MS3PROULTIMA-B-18 + MS3PROULTIMA-B-3 + MS3PROULTIMA-B-5 + MS3PROULTIMA-B-7 + MS3PROULTIMA-B-9 | Power ground + Ground + Ground + Ground + Ground + Ground | ground | single_source | |
| OEM-B-23 | Idle air control valve | low_side_out | MS3PROULTIMA-C-1 | PWM out 5 | low_side_out | corroborated | |
| OEM-B-24 | NC | — | — | — | — | unverified | |
| OEM-B-25 | NC | — | — | — | — | unverified | |
| OEM-B-3 | Injector 2 | injector_out | MS3PROULTIMA-A-4 | Injector out I | injector_out | corroborated | |
| OEM-B-4 | Injector 3 | injector_out | MS3PROULTIMA-B-1 | Injector out A | injector_out | corroborated | |
| OEM-B-5 | Injector 4 | injector_out | MS3PROULTIMA-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 | MS3PROULTIMA-A-35 | 12V+ switched power in | power_in | corroborated | |
| OEM-C-1 | Primary O2 heater | low_side_out | MS3PROULTIMA-A-30 | PWM out 3 | low_side_out | corroborated | |
| OEM-C-10 | VTEC pressure switch | digital_in | MS3PROULTIMA-C-10 | Digital switched in 5 | digital_in | corroborated | |
| OEM-C-11 | Secondary O2 heater control | low_side_out | MS3PROULTIMA-C-2 | PWM out 4 | low_side_out | single_source | |
| OEM-C-12 | Ignition coil 2 | ignition_out | MS3PROULTIMA-B-14 | Spark out E | ignition_out | corroborated | |
| OEM-C-13 | Ignition coil 3 | ignition_out | MS3PROULTIMA-B-15 | Spark out C | ignition_out | corroborated | |
| OEM-C-14 | Ignition coil 4 | ignition_out | MS3PROULTIMA-B-16 | Spark out H | ignition_out | corroborated | |
| OEM-C-15 | Secondary O2 sensor | lambda_nb_in | MS3PROULTIMA-A-20 | Analog in 2 | analog_in | corroborated | |
| OEM-C-16 | Primary O2 sensor | lambda_nb_in | MS3PROULTIMA-A-21 | Analog in 3 | analog_in | corroborated | |
| OEM-C-17 | MAP sensor | analog_in | MS3PROULTIMA-A-19 | Analog in 1 | analog_in | corroborated | |
| OEM-C-18 | Sensor ground 2 | sensor_ground | MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | Logic ground + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground | corroborated | |
| OEM-C-19 | Sensor 5V supply 1 (MAP) | vref | MS3PROULTIMA-A-8 | 5V+ VREF out 1 | vref | corroborated | |
| OEM-C-2 | Alternator control | low_side_out | MS3PROULTIMA-B-6 | Injector out D | injector_out | single_source | |
| OEM-C-20 | Cam (TDC1) sensor + | trigger_in | MS3PROULTIMA-A-26 | CMP+ | trigger_in | corroborated | |
| OEM-C-21 | Cam (TDC1) sensor − | trigger_in | MS3PROULTIMA-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 | MS3PROULTIMA-A-12 | Analog In 6 | analog_in | single_source | |
| OEM-C-25 | Intake air temp sensor | temp_in | MS3PROULTIMA-A-11 | CLT in | temp_in | corroborated | |
| OEM-C-26 | Coolant temp sensor | temp_in | MS3PROULTIMA-A-10 | MAT in | temp_in | corroborated | |
| OEM-C-27 | Throttle position sensor | analog_in | MS3PROULTIMA-A-9 | TPS in | analog_in | corroborated | |
| OEM-C-28 | Sensor 5V supply 2 | vref | MS3PROULTIMA-C-15 | 5V+ VREF out 2 | vref | corroborated | |
| OEM-C-29 | Cam (TDC2) sensor + | trigger_in | MS3PROULTIMA-B-28 | Digital frequency in 1 | digital_in | corroborated | |
| OEM-C-3 | Knock sensor | knock_in | — | — | — | conflict | |
| OEM-C-30 | Cam (TDC2) sensor − | sensor_ground | MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | Logic ground + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground | corroborated | |
| OEM-C-31 | Timing ground | sensor_ground | MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | Logic ground + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground | single_source | |
| OEM-C-4 | Ignition coil 1 | ignition_out | MS3PROULTIMA-B-13 | Spark out G | ignition_out | corroborated | |
| OEM-C-5 | Alternator FR signal | digital_in | MS3PROULTIMA-B-35 | Digital Frequency in 1 VR− | digital_in | single_source | |
| OEM-C-6 | NC | — | — | — | — | unverified | |
| OEM-C-7 | Sensor ground 1 | sensor_ground | MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | Logic ground + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground | corroborated | |
| OEM-C-8 | Crank sensor + (CKP+) | trigger_in | MS3PROULTIMA-A-6 | CKP+ | trigger_in | corroborated | |
| OEM-C-9 | Crank sensor − (CKP−) | trigger_in | MS3PROULTIMA-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 | MS3PROULTIMA-A-35 | 0.85 | no route | 12V+ switched power in | — | |
| W4 | OEM-B-21 | MS3PROULTIMA-C-23 | 0.85 | no route | Backup power (battery constant) | — | |
| W5 | OEM-B-10 | SP-GND-1 | 0.85 | no route | Power ground 2 | — | |
| W6 | OEM-B-2 | SP-GND-1 | 0.85 | no route | Power ground 1 | — | |
| W7 | OEM-B-20 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W8 | OEM-B-22 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W9 | SP-GND-1 | MS3PROULTIMA-A-13 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | MS3PROULTIMA-B-18 | 0.85 | no route | Ground | — | |
| W11 | SP-GND-1 | MS3PROULTIMA-B-3 | 0.85 | no route | Ground | — | |
| W12 | SP-GND-1 | MS3PROULTIMA-B-5 | 0.85 | no route | Ground | — | |
| W13 | SP-GND-1 | MS3PROULTIMA-B-7 | 0.85 | no route | Ground | — | |
| W14 | SP-GND-1 | MS3PROULTIMA-B-9 | 0.85 | no route | Ground | — | |
| W15 | OEM-C-18 | SP-0V-1 | 0.5 | no route | Sensor ground 2 | — | |
| W16 | OEM-C-30 | SP-0V-1 | 0.5 | no route | Cam (TDC2) sensor − | — | |
| W17 | OEM-C-31 | SP-0V-1 | 0.5 | no route | Timing ground | — | |
| W18 | OEM-C-7 | SP-0V-1 | 0.5 | no route | Sensor ground 1 | — | |
| W19 | SP-0V-1 | MS3PROULTIMA-A-16 | 0.5 | no route | Logic ground | — | |
| W20 | SP-0V-1 | MS3PROULTIMA-A-18 | 0.5 | no route | Sensor return | — | |
| W21 | SP-0V-1 | MS3PROULTIMA-C-17 | 0.5 | no route | Sensor return | — | |
| W22 | SP-0V-1 | MS3PROULTIMA-C-18 | 0.5 | no route | Sensor return | — | |
| W23 | SP-0V-1 | MS3PROULTIMA-C-19 | 0.5 | no route | Sensor return | — | |
| W24 | SP-0V-1 | MS3PROULTIMA-C-20 | 0.5 | no route | Sensor return | — | |
| W25 | SP-0V-1 | MS3PROULTIMA-C-21 | 0.5 | no route | Sensor return | — | |
| W26 | OEM-C-19 | MS3PROULTIMA-A-8 | 0.5 | no route | Sensor 5V supply 1 (MAP) | — | |
| W27 | OEM-C-28 | MS3PROULTIMA-C-15 | 0.5 | no route | Sensor 5V supply 2 | — | |
| W28 | OEM-C-9 | MS3PROULTIMA-A-15 | 0.5 | no route | Crank sensor − (CKP−) | — | |
| W29 | OEM-C-8 | MS3PROULTIMA-A-6 | 0.5 | no route | Crank sensor + (CKP+) | — | |
| W30 | OEM-C-21 | MS3PROULTIMA-A-27 | 0.5 | no route | Cam (TDC1) sensor − | — | |
| W31 | OEM-C-20 | MS3PROULTIMA-A-26 | 0.5 | no route | Cam (TDC1) sensor + | — | |
| W32 | OEM-C-29 | MS3PROULTIMA-B-28 | 0.5 | no route | Cam (TDC2) sensor + | — | |
| W33 | OEM-C-4 | MS3PROULTIMA-B-13 | 0.5 | no route | Ignition coil 1 | — | |
| W34 | OEM-C-12 | MS3PROULTIMA-B-14 | 0.5 | no route | Ignition coil 2 | — | |
| W35 | OEM-C-13 | MS3PROULTIMA-B-15 | 0.5 | no route | Ignition coil 3 | — | |
| W36 | OEM-C-14 | MS3PROULTIMA-B-16 | 0.5 | no route | Ignition coil 4 | — | |
| W37 | OEM-B-11 | MS3PROULTIMA-A-3 | 0.5 | no route | Injector 1 | — | |
| W38 | OEM-B-3 | MS3PROULTIMA-A-4 | 0.5 | no route | Injector 2 | — | |
| W39 | OEM-B-4 | MS3PROULTIMA-B-1 | 0.5 | no route | Injector 3 | — | |
| W40 | OEM-B-5 | MS3PROULTIMA-B-10 | 0.5 | no route | Injector 4 | — | |
| W41 | OEM-A-15 | MS3PROULTIMA-A-28 | 0.5 | no route | Fuel pump relay (USDM) | — | |
| W42 | OEM-A-16 | MS3PROULTIMA-A-14 | 0.5 | no route | Fuel pump relay (JDM) | — | |
| W43 | OEM-A-17 | MS3PROULTIMA-C-4 | 0.5 | no route | A/C clutch relay | — | |
| W44 | OEM-A-20 | MS3PROULTIMA-A-29 | 0.5 | no route | Radiator fan relay | — | |
| W45 | OEM-A-28 | MS3PROULTIMA-C-3 | 0.5 | no route | Air pump relay | — | |
| W46 | OEM-C-1 | MS3PROULTIMA-A-30 | 0.5 | no route | Primary O2 heater | — | |
| W47 | OEM-C-11 | MS3PROULTIMA-C-2 | 0.5 | no route | Secondary O2 heater control | — | |
| W48 | OEM-B-23 | MS3PROULTIMA-C-1 | 0.5 | no route | Idle air control valve | — | |
| W49 | OEM-A-1 | MS3PROULTIMA-A-1 | 0.5 | no route | Coolant temp gauge drive | — | |
| W50 | OEM-A-12 | MS3PROULTIMA-A-2 | 0.5 | no route | Immobilizer indicator light | — | |
| W51 | OEM-A-18 | MS3PROULTIMA-A-5 | 0.5 | no route | Check engine light (MIL) | — | |
| W52 | OEM-A-2 | MS3PROULTIMA-B-11 | 0.5 | no route | Air control valve solenoid | — | |
| W53 | OEM-A-3 | MS3PROULTIMA-B-12 | 0.5 | no route | Evap bypass solenoid | — | |
| W54 | OEM-A-4 | MS3PROULTIMA-B-2 | 0.5 | no route | Evap canister vent shut valve | — | |
| W55 | OEM-A-6 | MS3PROULTIMA-B-4 | 0.5 | no route | Evap canister purge valve | — | |
| W56 | OEM-C-2 | MS3PROULTIMA-B-6 | 0.5 | no route | Alternator control | — | |
| W57 | OEM-A-19 | MS3PROULTIMA-A-24 | 0.5 | no route | Tacho output | — | |
| W58 | OEM-C-17 | MS3PROULTIMA-A-19 | 0.5 | no route | MAP sensor | — | |
| W59 | OEM-C-27 | MS3PROULTIMA-A-9 | 0.5 | no route | Throttle position sensor | — | |
| W60 | OEM-A-23 | MS3PROULTIMA-A-25 | 0.5 | no route | Secondary O2 sensor | — | |
| W61 | OEM-C-15 | MS3PROULTIMA-A-20 | 0.5 | no route | Secondary O2 sensor | — | |
| W62 | OEM-C-16 | MS3PROULTIMA-A-21 | 0.5 | no route | Primary O2 sensor | — | |
| W63 | OEM-C-26 | MS3PROULTIMA-A-10 | 0.5 | no route | Coolant temp sensor | — | |
| W64 | OEM-C-25 | MS3PROULTIMA-A-11 | 0.5 | no route | Intake air temp sensor | — | |
| W65 | OEM-A-29 | MS3PROULTIMA-A-22 | 0.5 | no route | Fuel tank pressure sensor | — | |
| W66 | OEM-A-30 | MS3PROULTIMA-A-23 | 0.5 | no route | Electrical load detector | — | |
| W67 | OEM-C-24 | MS3PROULTIMA-A-12 | 0.5 | no route | Air pump electric current sensor | — | |
| W68 | OEM-A-9 | MS3PROULTIMA-B-34 | 0.5 | no route | Vehicle speed sensor | — | |
| W69 | OEM-C-5 | MS3PROULTIMA-B-35 | 0.5 | no route | Alternator FR signal | — | |
| W70 | OEM-A-24 | MS3PROULTIMA-A-32 | 0.5 | no route | Starter switch signal | — | |
| W71 | OEM-A-26 | MS3PROULTIMA-B-20 | 0.5 | no route | Power steering load detect | — | |
| W72 | OEM-A-27 | MS3PROULTIMA-B-29 | 0.5 | no route | A/C switch (request) | — | |
| W73 | OEM-A-32 | MS3PROULTIMA-C-11 | 0.5 | no route | Brake switch | — | |
| W74 | OEM-C-10 | MS3PROULTIMA-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 (7)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-C-29 ↔ MS3PROULTIMA-B-28 | OEM-C-29 "Cam (TDC2) sensor +" [trigger_in] is wired to MS3PROULTIMA-B-28 "Digital frequency in 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| info | NET_FAMILY | OEM-A-2 ↔ MS3PROULTIMA-B-11 | OEM-A-2 "Air control valve solenoid" [low_side_out] is wired to MS3PROULTIMA-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-3 ↔ MS3PROULTIMA-B-12 | OEM-A-3 "Evap bypass solenoid" [low_side_out] is wired to MS3PROULTIMA-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-4 ↔ MS3PROULTIMA-B-2 | OEM-A-4 "Evap canister vent shut valve" [low_side_out] is wired to MS3PROULTIMA-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-6 ↔ MS3PROULTIMA-B-4 | OEM-A-6 "Evap canister purge valve" [low_side_out] is wired to MS3PROULTIMA-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-C-2 ↔ MS3PROULTIMA-B-6 | OEM-C-2 "Alternator control" [low_side_out] is wired to MS3PROULTIMA-B-6 "Injector out D" [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-12 VTEC solenoid; OEM-C-22 Knock sensor; OEM-C-3 Knock sensor |
Accepted (0)
| Code | Subject | Reason | By |
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Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-04. Review every wire against both manuals before building. Not wired: - OEM-C 3: Knock sensor: 2 stock pins named "Knock sensor" without a documented polarity / pairing; wire by hand - OEM-C 22: Knock sensor: 2 stock pins named "Knock sensor" without a documented polarity / pairing; wire by hand - OEM-B 12: VTEC solenoid: no free high_side/ls_hs/hbridge rated ≥ 1.0 A on AMP EFI MS3Pro Ultimate - OEM-A 21: K-Line: no free k_line on AMP EFI MS3Pro Ultimate - 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 - MS3PROULTIMA-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 |
|---|---|---|---|
| 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 |
| 4 | vendor_doc | AMP EFI: MS3Pro Ultimate manual (v1.210, fw 1.5.2) pinout tables | https://cdn.shopify.com/s/files/1/0960/0014/7754/files/MS3Pro_User_Manual_Firmware_1.5.2_ULTIMATE.pdf?v=1760706068 |
| 4 | vendor_doc | Haltech KB: F20C (AP1) engine | https://support.haltech.com/portal/en/kb/articles/f20c-ap1-engine |
| 4 | vendor_doc | Link S2000 AP1 PlugIn installation manual | https://linkecu.com/documentation/S2000X.pdf |
| 2 | forum | AllPinouts: 2000–2005 Honda S2000 ECU | https://allpinouts.org/pinouts/connectors/car/2000-2005-honda-s2000-ecu/ |
| 2 | forum | Autodata blog: ECU Pinout Honda S2000 2000-2004 | http://autodatas.blogspot.com/2012/11/ecu-pinout-honda-s2000-2000-2004.html |
| 2 | derived | Typical load estimates (relay coil ~0.2 A, high-Z injector ~1.2 A, VVT solenoid ~1 A) | — |