RSX Type-S 2005-06 (K20Z1) → AMP EFI MS3Pro Mini (auto)
RSX Type-S 2005-06 (K20Z1) — 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 | 45 wires · 8 connectors · 4 part lines |
| Tools | 715131-1 · wire strippers · multimeter · heat gun + heat-shrink |
| Terminals | 316836-1 |
| 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-A-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MS3PROMINI-A-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-8 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-E-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MS3PROMINI-A-22 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MS3PROMINI-A-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-A-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-E-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | MS3PROMINI-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-20 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-21 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-E-6 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-5V1-1 | MS3PROMINI-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A-7 | MS3PROMINI-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-19 | MS3PROMINI-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-6 | MS3PROMINI-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-16 | MS3PROMINI-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-15 | MS3PROMINI-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-14 | MS3PROMINI-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-13 | MS3PROMINI-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-B-5 | MS3PROMINI-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-B-4 | MS3PROMINI-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-B-3 | MS3PROMINI-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-B-2 | MS3PROMINI-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-E-8 | MS3PROMINI-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-E-12 | MS3PROMINI-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-E-17 | MS3PROMINI-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-E-18 | MS3PROMINI-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-E-9 | MS3PROMINI-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-12 | MS3PROMINI-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-30 | MS3PROMINI-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-29 | MS3PROMINI-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-E-20 | MS3PROMINI-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-B-8 | MS3PROMINI-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-B-17 | MS3PROMINI-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-B-13 | MS3PROMINI-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-E-14 | MS3PROMINI-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-18 | MS3PROMINI-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-B-10 | MS3PROMINI-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-B-11 | MS3PROMINI-A-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | 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 | MS3PROMINI-A-2 | MS3PROMINI-A-21 | open (OL) | 5 V sensor reference 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-22 | MS3PROMINI-A-2 | open (OL) | power ground 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 | — | W26 | — | 0.5 | OEM-B-5 | — | — | — |
| 11 | Injector out G | — | W27 | — | 0.5 | OEM-B-4 | — | — | — |
| 12 | Injector out H | — | W28 | — | 0.5 | OEM-B-3 | — | — | — |
| 13 | Analog in 1 | — | W36 | — | 0.5 | OEM-A-30 | — | — | — |
| 14 | Analog in 2 | — | W38 | — | 0.5 | OEM-E-20 | — | — | — |
| 15 | Analog in 3 | — | W41 | — | 0.5 | OEM-B-13 | — | — | — |
| 16 | Analog in 4 | — | W42 | — | 0.5 | OEM-E-14 | — | — | — |
| 17 | Spark out A | — | W22 | — | 0.5 | OEM-A-16 | — | — | — |
| 18 | Spark out B | — | W23 | — | 0.5 | OEM-A-15 | — | — | — |
| 19 | Spark out C | — | W24 | — | 0.5 | OEM-A-14 | — | — | — |
| 2 | +5V VREF out | — | W18 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | Spark out D | — | W25 | — | 0.5 | OEM-A-13 | — | — | — |
| 21 | Sensor ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Power ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | CAN Low | — | — | — | — | — | — | — | — |
| 25 | CAN High | — | — | — | — | — | — | — | — |
| 26 | CLT in | — | W39 | — | 0.5 | OEM-B-8 | — | — | — |
| 27 | IAT in | — | W40 | — | 0.5 | OEM-B-17 | — | — | — |
| 28 | TPS in | — | W37 | — | 0.5 | OEM-A-29 | — | — | — |
| 29 | Digital switched in 1 / Flex fuel | — | W43 | — | 0.5 | OEM-A-18 | — | — | — |
| 3 | PWM out 1 / Idle | — | W31 | — | 0.5 | OEM-E-12 | — | — | — |
| 30 | CKP+ | — | W19 | — | 0.5 | OEM-A-7 | — | — | — |
| 31 | CKP- | — | — | — | — | — | — | — | — |
| 32 | CMP+ | — | W20 | — | 0.5 | OEM-A-19 | — | — | — |
| 33 | CMP- | — | W21 | — | 0.5 | OEM-A-6 | — | — | — |
| 34 | Digital frequency in 1 (Hall) | — | W44 | — | 0.5 | OEM-B-10 | — | — | — |
| 35 | Digital frequency in 2 (Hall) | — | W45 | — | 0.5 | OEM-B-11 | — | — | — |
| 4 | Fuel pump out | — | W30 | — | 0.5 | OEM-E-8 | — | — | — |
| 5 | Injector out A | — | W29 | — | 0.5 | OEM-B-2 | — | — | — |
| 6 | Injector out B | — | W32 | — | 0.5 | OEM-E-17 | — | — | — |
| 7 | Injector out C | — | W33 | — | 0.5 | OEM-E-18 | — | — | — |
| 8 | Injector out D | — | W34 | — | 0.5 | OEM-E-9 | — | — | — |
| 9 | Injector out E | — | W35 | — | 0.5 | OEM-A-12 | — | — | — |
OEM-A
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Knock sensor (KS) | — | — | — | — | — | — | — | — |
| 2 | Ignition power 2 (IGP2) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Ignition power 1 (IGP1) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground 2 (PG2) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground 1 (PG1) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Camshaft position B (CMP B) | — | W21 | — | 0.5 | MS3PROMINI-A-33 | — | — | — |
| 7 | Crank position sensor (CKP) | — | W19 | — | 0.5 | MS3PROMINI-A-30 | — | — | — |
| 8 | Logic ground 2 (LG2) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 9 | Logic ground 1 (LG1) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | A/F sensor heater control (AFSHTC) | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Idle air control valve (IACV) | — | W35 | — | 0.5 | MS3PROMINI-A-9 | — | — | — |
| 13 | Ignition coil 4 (IGPLS4) | — | W25 | — | 0.5 | MS3PROMINI-A-20 | — | — | — |
| 14 | Ignition coil 3 (IGPLS3) | — | W24 | — | 0.5 | MS3PROMINI-A-19 | — | — | — |
| 15 | Ignition coil 2 (IGPLS2) | — | W23 | — | 0.5 | MS3PROMINI-A-18 | — | — | — |
| 16 | Ignition coil 1 (IGPLS1) | — | W22 | — | 0.5 | MS3PROMINI-A-17 | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — |
| 18 | Neutral position switch (NC) | — | W43 | — | 0.5 | MS3PROMINI-A-29 | — | — | — |
| 19 | Camshaft position A (CMP A) | — | W20 | — | 0.5 | MS3PROMINI-A-32 | — | — | — |
| 20 | Sensor 5V supply 2 (VCC2) | — | W15 | — | 0.5 | SP-5V1-1 | — | — | — |
| 21 | Sensor 5V supply 1 (VCC1) | — | W16 | — | 0.5 | SP-5V1-1 | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | Sensor ground 2 (SG2) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Sensor ground 1 (SG1) | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 25 | — | — | — | — | — | — | — | — | — |
| 26 | — | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — |
| 28 | A/F sensor - (AFS-, wideband Vs) | — | — | — | — | — | — | — | — |
| 29 | Throttle position sensor (TPS) | — | W37 | — | 0.5 | MS3PROMINI-A-28 | — | — | — |
| 30 | Manifold absolute pressure (MAP) | — | W36 | — | 0.5 | MS3PROMINI-A-13 | — | — | — |
| 31 | A/F sensor + (AFS+, wideband Ip) | — | — | — | — | — | — | — | — |
OEM-B
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | VTC oil control solenoid (+) | — | — | — | — | — | — | — | — |
| 2 | Injector 4 (INJ4) | — | W29 | — | 0.5 | MS3PROMINI-A-5 | — | — | — |
| 3 | Injector 3 (INJ3) | — | W28 | — | 0.5 | MS3PROMINI-A-12 | — | — | — |
| 4 | Injector 2 (INJ2) | — | W27 | — | 0.5 | MS3PROMINI-A-11 | — | — | — |
| 5 | Injector 1 (INJ1) | — | W26 | — | 0.5 | MS3PROMINI-A-10 | — | — | — |
| 6 | VTEC solenoid (VTS) | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Coolant temp sensor (ECT) | — | W39 | — | 0.5 | MS3PROMINI-A-26 | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | Alternator L signal (ALTL) | — | W44 | — | 0.5 | MS3PROMINI-A-34 | — | — | — |
| 11 | VTEC oil pressure switch (VTPSW) | — | W45 | — | 0.5 | MS3PROMINI-A-35 | — | — | — |
| 12 | — | — | — | — | — | — | — | — | — |
| 13 | Alternator FR signal (ALTF) | — | W41 | — | 0.5 | MS3PROMINI-A-15 | — | — | — |
| 14 | — | — | — | — | — | — | — | — | — |
| 15 | — | — | — | — | — | — | — | — | — |
| 16 | — | — | — | — | — | — | — | — | — |
| 17 | Intake air temp sensor (IAT) | — | W40 | — | 0.5 | MS3PROMINI-A-27 | — | — | — |
| 18 | Alternator control (ALTC) | — | — | — | — | — | — | — | — |
| 19 | — | — | — | — | — | — | — | — | — |
| 20 | — | — | — | — | — | — | — | — | — |
| 21 | Evap canister purge valve (PCS) | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — |
| 23 | — | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
OEM-E
Mating face
Wire side
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | — | — | — | — | — | — | — |
| 2 | — | — | — | — | — | — | — | — | — |
| 3 | Reverse lockout solenoid (RVS, Type-S) | — | — | — | — | — | — | — | — |
| 4 | Logic ground 3 (LG3) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Sensor ground 3 (SG3) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor 5V supply 3 (VCC3) | — | W17 | — | 0.5 | SP-5V1-1 | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | Main relay control (MRLY) | — | W30 | — | 0.5 | MS3PROMINI-A-4 | — | — | — |
| 9 | A/F sensor heater relay control (AFSHTCR) | — | W34 | — | 0.5 | MS3PROMINI-A-8 | — | — | — |
| 10 | Ignition switch signal (IG1) | — | — | — | — | — | — | — | — |
| 11 | — | — | — | — | — | — | — | — | — |
| 12 | Radiator fan control (FANC) | — | W31 | — | 0.5 | MS3PROMINI-A-3 | — | — | — |
| 13 | Multiplex communication (SEFMJ) | — | — | — | — | — | — | — | — |
| 14 | Fuel tank pressure sensor (FTP) | — | W42 | — | 0.5 | MS3PROMINI-A-16 | — | — | — |
| 15 | Electrical load detector (ELD) | — | — | — | — | — | — | — | — |
| 16 | Power steering pressure switch (PSPSW) | — | — | — | — | — | — | — | — |
| 17 | Immobilizer fuel pump relay (IMO FPR) | — | W32 | — | 0.5 | MS3PROMINI-A-6 | — | — | — |
| 18 | A/C clutch relay (ACC) | — | W33 | — | 0.5 | MS3PROMINI-A-7 | — | — | — |
| 19 | Evap vent shut valve (VSV) | — | — | — | — | — | — | — | — |
| 20 | Secondary heated O2 sensor (SHO2S) | — | W38 | — | 0.5 | MS3PROMINI-A-14 | — | — | — |
| 21 | Secondary O2 heater control (SO2SHTC) | — | — | — | — | — | — | — | — |
| 22 | Brake switch (BKSW) | — | — | — | — | — | — | — | — |
| 23 | K-line (diagnostic) | — | — | — | — | — | — | — | — |
| 24 | — | — | — | — | — | — | — | — | — |
| 25 | Engine speed pulse / tacho (NEP) | — | — | — | — | — | — | — | — |
| 26 | Vehicle speed output (VSSOUT) | — | — | — | — | — | — | — | — |
| 27 | Immobilizer code (IMOCD) | — | — | — | — | — | — | — | — |
| 28 | — | — | — | — | — | — | — | — | — |
| 29 | Service check signal (SCS) | — | — | — | — | — | — | — | — |
| 30 | Write enable signal (WEN) | — | — | — | — | — | — | — | — |
| 31 | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-A-23 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-A-24 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-E-5 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | MS3PROMINI-A-21 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W2 | — | 0.85 | OEM-A-3 | — | — | — |
| 1 | — | — | W1 | — | 0.85 | OEM-A-2 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MS3PROMINI-A-1 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-A-20 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-A-21 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-E-6 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MS3PROMINI-A-2 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-4 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-5 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-8 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-9 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-E-4 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROMINI-A-22 | — | — | — |
| 1 | — | — | W10 | — | 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 | Knock sensor (KS) | knock_in | — | — | — | single_source | |
| OEM-A-10 | A/F sensor heater control (AFSHTC) | low_side_out | — | — | — | single_source | |
| OEM-A-12 | Idle air control valve (IACV) | low_side_out | MS3PROMINI-A-9 | Injector out E | injector_out | single_source | |
| OEM-A-13 | Ignition coil 4 (IGPLS4) | ignition_out | MS3PROMINI-A-20 | Spark out D | ignition_out | single_source | |
| OEM-A-14 | Ignition coil 3 (IGPLS3) | ignition_out | MS3PROMINI-A-19 | Spark out C | ignition_out | single_source | |
| OEM-A-15 | Ignition coil 2 (IGPLS2) | ignition_out | MS3PROMINI-A-18 | Spark out B | ignition_out | single_source | |
| OEM-A-16 | Ignition coil 1 (IGPLS1) | ignition_out | MS3PROMINI-A-17 | Spark out A | ignition_out | single_source | |
| OEM-A-18 | Neutral position switch (NC) | digital_in | MS3PROMINI-A-29 | Digital switched in 1 / Flex fuel | digital_in | single_source | |
| OEM-A-19 | Camshaft position A (CMP A) | trigger_in | MS3PROMINI-A-32 | CMP+ | trigger_in | single_source | |
| OEM-A-2 | Ignition power 2 (IGP2) | power_in | MS3PROMINI-A-1 | 12V+ switched power in | power_in | single_source | |
| OEM-A-20 | Sensor 5V supply 2 (VCC2) | vref | MS3PROMINI-A-2 | +5V VREF out | vref | single_source | |
| OEM-A-21 | Sensor 5V supply 1 (VCC1) | vref | MS3PROMINI-A-2 | +5V VREF out | vref | single_source | |
| OEM-A-23 | Sensor ground 2 (SG2) | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | single_source | |
| OEM-A-24 | Sensor ground 1 (SG1) | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | single_source | |
| OEM-A-28 | A/F sensor - (AFS-, wideband Vs) | wb_vs | — | — | — | single_source | |
| OEM-A-29 | Throttle position sensor (TPS) | analog_in | MS3PROMINI-A-28 | TPS in | analog_in | single_source | |
| OEM-A-3 | Ignition power 1 (IGP1) | power_in | MS3PROMINI-A-1 | 12V+ switched power in | power_in | single_source | |
| OEM-A-30 | Manifold absolute pressure (MAP) | analog_in | MS3PROMINI-A-13 | Analog in 1 | analog_in | single_source | |
| OEM-A-31 | A/F sensor + (AFS+, wideband Ip) | wb_ip | — | — | — | single_source | |
| OEM-A-4 | Power ground 2 (PG2) | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-A-5 | Power ground 1 (PG1) | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-A-6 | Camshaft position B (CMP B) | trigger_in | MS3PROMINI-A-33 | CMP- | trigger_in | single_source | |
| OEM-A-7 | Crank position sensor (CKP) | trigger_in | MS3PROMINI-A-30 | CKP+ | trigger_in | single_source | |
| OEM-A-8 | Logic ground 2 (LG2) | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-A-9 | Logic ground 1 (LG1) | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-B-1 | VTC oil control solenoid (+) | low_side_out | — | — | — | single_source | |
| OEM-B-10 | Alternator L signal (ALTL) | digital_in | MS3PROMINI-A-34 | Digital frequency in 1 (Hall) | digital_in | single_source | |
| OEM-B-11 | VTEC oil pressure switch (VTPSW) | digital_in | MS3PROMINI-A-35 | Digital frequency in 2 (Hall) | digital_in | single_source | |
| OEM-B-13 | Alternator FR signal (ALTF) | analog_in | MS3PROMINI-A-15 | Analog in 3 | analog_in | single_source | |
| OEM-B-17 | Intake air temp sensor (IAT) | temp_in | MS3PROMINI-A-27 | IAT in | temp_in | single_source | |
| OEM-B-18 | Alternator control (ALTC) | low_side_out | — | — | — | single_source | |
| OEM-B-2 | Injector 4 (INJ4) | injector_out | MS3PROMINI-A-5 | Injector out A | injector_out | single_source | |
| OEM-B-21 | Evap canister purge valve (PCS) | low_side_out | — | — | — | single_source | |
| OEM-B-3 | Injector 3 (INJ3) | injector_out | MS3PROMINI-A-12 | Injector out H | injector_out | single_source | |
| OEM-B-4 | Injector 2 (INJ2) | injector_out | MS3PROMINI-A-11 | Injector out G | injector_out | single_source | |
| OEM-B-5 | Injector 1 (INJ1) | injector_out | MS3PROMINI-A-10 | Injector out F | injector_out | single_source | |
| OEM-B-6 | VTEC solenoid (VTS) | low_side_out | — | — | — | single_source | |
| OEM-B-8 | Coolant temp sensor (ECT) | temp_in | MS3PROMINI-A-26 | CLT in | temp_in | single_source | |
| OEM-E-10 | Ignition switch signal (IG1) | digital_in | — | — | — | single_source | |
| OEM-E-12 | Radiator fan control (FANC) | low_side_out | MS3PROMINI-A-3 | PWM out 1 / Idle | low_side_out | single_source | |
| OEM-E-13 | Multiplex communication (SEFMJ) | serial | — | — | — | single_source | |
| OEM-E-14 | Fuel tank pressure sensor (FTP) | analog_in | MS3PROMINI-A-16 | Analog in 4 | analog_in | single_source | |
| OEM-E-15 | Electrical load detector (ELD) | analog_in | — | — | — | single_source | |
| OEM-E-16 | Power steering pressure switch (PSPSW) | digital_in | — | — | — | single_source | |
| OEM-E-17 | Immobilizer fuel pump relay (IMO FPR) | low_side_out | MS3PROMINI-A-6 | Injector out B | injector_out | single_source | |
| OEM-E-18 | A/C clutch relay (ACC) | low_side_out | MS3PROMINI-A-7 | Injector out C | injector_out | single_source | |
| OEM-E-19 | Evap vent shut valve (VSV) | low_side_out | — | — | — | single_source | |
| OEM-E-20 | Secondary heated O2 sensor (SHO2S) | lambda_nb_in | MS3PROMINI-A-14 | Analog in 2 | analog_in | single_source | |
| OEM-E-21 | Secondary O2 heater control (SO2SHTC) | low_side_out | — | — | — | single_source | |
| OEM-E-22 | Brake switch (BKSW) | digital_in | — | — | — | single_source | |
| OEM-E-23 | K-line (diagnostic) | serial | — | — | — | single_source | |
| OEM-E-25 | Engine speed pulse / tacho (NEP) | tacho_out | — | — | — | single_source | |
| OEM-E-26 | Vehicle speed output (VSSOUT) | tacho_out | — | — | — | single_source | |
| OEM-E-27 | Immobilizer code (IMOCD) | — | — | — | — | single_source | |
| OEM-E-29 | Service check signal (SCS) | — | — | — | — | single_source | |
| OEM-E-3 | Reverse lockout solenoid (RVS, Type-S) | low_side_out | — | — | — | single_source | |
| OEM-E-30 | Write enable signal (WEN) | — | — | — | — | single_source | |
| OEM-E-31 | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-E-4 | Logic ground 3 (LG3) | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-E-5 | Sensor ground 3 (SG3) | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | single_source | |
| OEM-E-6 | Sensor 5V supply 3 (VCC3) | vref | MS3PROMINI-A-2 | +5V VREF out | vref | single_source | |
| OEM-E-8 | Main relay control (MRLY) | low_side_out | MS3PROMINI-A-4 | Fuel pump out | low_side_out | single_source | |
| OEM-E-9 | A/F sensor heater relay control (AFSHTCR) | low_side_out | MS3PROMINI-A-8 | Injector out D | injector_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-2 | SP-14V-1 | 0.85 | no route | Ignition power 2 (IGP2) | — | |
| W2 | OEM-A-3 | SP-14V-1 | 0.85 | no route | Ignition power 1 (IGP1) | — | |
| W3 | SP-14V-1 | MS3PROMINI-A-1 | 0.85 | no route | 12V+ switched power in | — | |
| W4 | OEM-A-4 | SP-GND-1 | 0.85 | no route | Power ground 2 (PG2) | — | |
| W5 | OEM-A-5 | SP-GND-1 | 0.85 | no route | Power ground 1 (PG1) | — | |
| W6 | OEM-A-8 | SP-GND-1 | 0.85 | no route | Logic ground 2 (LG2) | — | |
| W7 | OEM-A-9 | SP-GND-1 | 0.85 | no route | Logic ground 1 (LG1) | — | |
| W8 | OEM-E-4 | SP-GND-1 | 0.85 | no route | Logic ground 3 (LG3) | — | |
| W9 | SP-GND-1 | MS3PROMINI-A-22 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | MS3PROMINI-A-23 | 0.85 | no route | Power ground | — | |
| W11 | OEM-A-23 | SP-0V-1 | 0.5 | no route | Sensor ground 2 (SG2) | — | |
| W12 | OEM-A-24 | SP-0V-1 | 0.5 | no route | Sensor ground 1 (SG1) | — | |
| W13 | OEM-E-5 | SP-0V-1 | 0.5 | no route | Sensor ground 3 (SG3) | — | |
| W14 | SP-0V-1 | MS3PROMINI-A-21 | 0.5 | no route | Sensor ground | — | |
| W15 | OEM-A-20 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 2 (VCC2) | — | |
| W16 | OEM-A-21 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 1 (VCC1) | — | |
| W17 | OEM-E-6 | SP-5V1-1 | 0.5 | no route | Sensor 5V supply 3 (VCC3) | — | |
| W18 | SP-5V1-1 | MS3PROMINI-A-2 | 0.5 | no route | +5V VREF out | — | |
| W19 | OEM-A-7 | MS3PROMINI-A-30 | 0.5 | no route | Crank position sensor (CKP) | — | |
| W20 | OEM-A-19 | MS3PROMINI-A-32 | 0.5 | no route | Camshaft position A (CMP A) | — | |
| W21 | OEM-A-6 | MS3PROMINI-A-33 | 0.5 | no route | Camshaft position B (CMP B) | — | |
| W22 | OEM-A-16 | MS3PROMINI-A-17 | 0.5 | no route | Ignition coil 1 (IGPLS1) | — | |
| W23 | OEM-A-15 | MS3PROMINI-A-18 | 0.5 | no route | Ignition coil 2 (IGPLS2) | — | |
| W24 | OEM-A-14 | MS3PROMINI-A-19 | 0.5 | no route | Ignition coil 3 (IGPLS3) | — | |
| W25 | OEM-A-13 | MS3PROMINI-A-20 | 0.5 | no route | Ignition coil 4 (IGPLS4) | — | |
| W26 | OEM-B-5 | MS3PROMINI-A-10 | 0.5 | no route | Injector 1 (INJ1) | — | |
| W27 | OEM-B-4 | MS3PROMINI-A-11 | 0.5 | no route | Injector 2 (INJ2) | — | |
| W28 | OEM-B-3 | MS3PROMINI-A-12 | 0.5 | no route | Injector 3 (INJ3) | — | |
| W29 | OEM-B-2 | MS3PROMINI-A-5 | 0.5 | no route | Injector 4 (INJ4) | — | |
| W30 | OEM-E-8 | MS3PROMINI-A-4 | 0.5 | no route | Main relay control (MRLY) | — | |
| W31 | OEM-E-12 | MS3PROMINI-A-3 | 0.5 | no route | Radiator fan control (FANC) | — | |
| W32 | OEM-E-17 | MS3PROMINI-A-6 | 0.5 | no route | Immobilizer fuel pump relay (IMO FPR) | — | |
| W33 | OEM-E-18 | MS3PROMINI-A-7 | 0.5 | no route | A/C clutch relay (ACC) | — | |
| W34 | OEM-E-9 | MS3PROMINI-A-8 | 0.5 | no route | A/F sensor heater relay control (AFSHTCR) | — | |
| W35 | OEM-A-12 | MS3PROMINI-A-9 | 0.5 | no route | Idle air control valve (IACV) | — | |
| W36 | OEM-A-30 | MS3PROMINI-A-13 | 0.5 | no route | Manifold absolute pressure (MAP) | — | |
| W37 | OEM-A-29 | MS3PROMINI-A-28 | 0.5 | no route | Throttle position sensor (TPS) | — | |
| W38 | OEM-E-20 | MS3PROMINI-A-14 | 0.5 | no route | Secondary heated O2 sensor (SHO2S) | — | |
| W39 | OEM-B-8 | MS3PROMINI-A-26 | 0.5 | no route | Coolant temp sensor (ECT) | — | |
| W40 | OEM-B-17 | MS3PROMINI-A-27 | 0.5 | no route | Intake air temp sensor (IAT) | — | |
| W41 | OEM-B-13 | MS3PROMINI-A-15 | 0.5 | no route | Alternator FR signal (ALTF) | — | |
| W42 | OEM-E-14 | MS3PROMINI-A-16 | 0.5 | no route | Fuel tank pressure sensor (FTP) | — | |
| W43 | OEM-A-18 | MS3PROMINI-A-29 | 0.5 | no route | Neutral position switch (NC) | — | |
| W44 | OEM-B-10 | MS3PROMINI-A-34 | 0.5 | no route | Alternator L signal (ALTL) | — | |
| W45 | OEM-B-11 | MS3PROMINI-A-35 | 0.5 | no route | VTEC oil pressure switch (VTPSW) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | 1318682-6 | TE | K-series ECU harness plug A (040-3 HD plug assy, 31P) | 1.000 | ea |
| connector | 353029-1 | TE | K-series ECU harness plug B (040 H/D-3 plug HSG assy, 24P) | 1.000 | ea |
| connector | 353826-1 | TE | K-series ECU harness plug E (040 HD 31P plug HSG assy-B, 31P) | 1.000 | ea |
| terminal | 316836-1 | TE | Multilock 040 III HD socket, tin, 22–18 AWG (0.3–0.85 mm²) | 40.000 | ea |
ECU setup sheet
| Role | Engine ref | Engine signal | Sensor | ECU point | ECU function | ECU class | Setup flag |
|---|---|---|---|---|---|---|---|
| No configured channels. | |||||||
Findings
Open (9)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | DATASET_GAP | RSX ECU A | 6 of 31 cavities on RSX ECU A have no pin data (11,17,22,25,26,27). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU B | 11 of 24 cavities on RSX ECU B have no pin data (7,9,12,14,15,16,19,20,22,23,24). Anything there is invisible to these checks. |
| warn | DATASET_GAP | RSX ECU E | 6 of 31 cavities on RSX ECU E have no pin data (1,2,7,11,24,28). Anything there is invisible to these checks. |
| warn | SUPPLY_GROUP | MS3PROMINI-A-2 + OEM-A-20 + OEM-A-21 + OEM-E-6 + SP-5V1-1 | Supplies meant to stay independent share one net: OEM-A-20 [k_vcc2], OEM-A-21 [k_vcc1], OEM-E-6 [k_vcc3]. 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-12 ↔ MS3PROMINI-A-9 | OEM-A-12 "Idle air control valve (IACV)" [low_side_out] is wired to MS3PROMINI-A-9 "Injector out E" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-E-17 ↔ MS3PROMINI-A-6 | OEM-E-17 "Immobilizer fuel pump relay (IMO FPR)" [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-E-18 ↔ MS3PROMINI-A-7 | OEM-E-18 "A/C clutch relay (ACC)" [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-E-9 ↔ MS3PROMINI-A-8 | OEM-E-9 "A/F sensor heater relay control (AFSHTCR)" [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 | UNMAPPED | OEM | 23 optional OEM pins are not mapped: OEM-A-1 Knock sensor (KS); OEM-A-10 A/F sensor heater control (AFSHTC); OEM-A-28 A/F sensor - (AFS-, wideband Vs); OEM-A-31 A/F sensor + (AFS+, wideband Ip); OEM-B-1 VTC oil control solenoid (+); OEM-B-18 Alternator control (ALTC); OEM-B-21 Evap canister purge valve (PCS); OEM-B-6 VTEC solenoid (VTS); OEM-E-10 Ignition switch signal (IG1); OEM-E-13 Multiplex communication (SEFMJ); OEM-E-15 Electrical load detector (ELD); OEM-E-16 Power steering pressure switch (PSPSW); OEM-E-19 Evap vent shut valve (VSV); OEM-E-21 Secondary O2 heater control (SO2SHTC); OEM-E-22 Brake switch (BKSW); OEM-E-23 K-line (diagnostic); OEM-E-25 Engine speed pulse / tacho (NEP); OEM-E-26 Vehicle speed output (VSSOUT); OEM-E-27 Immobilizer code (IMOCD); OEM-E-29 Service check signal (SCS); OEM-E-3 Reverse lockout solenoid (RVS, Type-S); OEM-E-30 Write enable signal (WEN); OEM-E-31 Malfunction indicator lamp (MIL) |
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-A 1: Knock sensor (KS): no free knock input on AMP EFI MS3Pro Mini - OEM-E 10: Ignition switch signal (IG1): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); AMP EFI MS3Pro Mini has no dedicated key-on input - OEM-E 21: Secondary O2 heater control (SO2SHTC): no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-A 10: A/F sensor heater control (AFSHTC): no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-B 6: VTEC solenoid (VTS): no free low_side/ls_hs/injector/hbridge rated ≥ 1.0 A on AMP EFI MS3Pro Mini - OEM-B 1: VTC oil control solenoid (+): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-B 18: Alternator control (ALTC): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-B 21: Evap canister purge valve (PCS): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-E 19: Evap vent shut valve (VSV): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-E 3: Reverse lockout solenoid (RVS, Type-S): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-E 31: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-E 25: Engine speed pulse / tacho (NEP): no free tacho/frequency_out/low_side/ls_hs on AMP EFI MS3Pro Mini - OEM-E 26: Vehicle speed output (VSSOUT): no free frequency_out/tacho/low_side/ls_hs on AMP EFI MS3Pro Mini - OEM-A 31: A/F sensor + (AFS+, wideband Ip): no free wb_ip on AMP EFI MS3Pro Mini - OEM-A 28: A/F sensor - (AFS-, wideband Vs): no free wb_vs on AMP EFI MS3Pro Mini - OEM-E 15: Electrical load detector (ELD): no free analog_0_5 on AMP EFI MS3Pro Mini - OEM-E 16: Power steering pressure switch (PSPSW): no free switch_in/frequency_in/analog_0_5 on AMP EFI MS3Pro Mini - OEM-E 22: Brake switch (BKSW): no free switch_in/frequency_in/analog_0_5 on AMP EFI MS3Pro Mini - OEM-E 13: Multiplex communication (SEFMJ): no free k_line on AMP EFI MS3Pro Mini - OEM-E 23: K-line (diagnostic): no free k_line on AMP EFI MS3Pro Mini - OEM-E 27: Immobilizer code (IMOCD): not classified in the library; wire by hand - OEM-E 29: Service check signal (SCS): not classified in the library; wire by hand - OEM-E 30: Write enable signal (WEN): not classified in the library; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 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 |
| 3 | forum | FFS TechNet: K-series 02-06 RSX ECU pin diagram (Helm) | https://ff-squad.com/technet2/k-series-02-06-rsx-ecu-pin-diagram/ | archive | 2026-10-05 | b2b85002666e |