BMW 3 Series E46 M3 2001–2006 (S54) → AMP EFI MS3Pro Mini (auto)
BMW 3 Series E46 M3 2001–2006 (S54) — AMP EFI — MS3Pro Mini
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 4: read the Findings page before cutting any wire |
| Size of the job | 50 wires · 10 connectors · 1 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-X60001-2 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-X60001-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-X60003-4 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-X60003-5 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | MS3PROMINI-A-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-X60001-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-X60001-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-X60001-6 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-X60001-9 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-X60005-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MS3PROMINI-A-22 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | MS3PROMINI-A-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-X60003-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-X60003-35 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-X60003-36 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-X60003-37 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-X60003-45 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-X60003-49 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-X60004-12 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-X60004-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | MS3PROMINI-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-X60004-14 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-X60004-9 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-5V1-1 | MS3PROMINI-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-X60003-3 | MS3PROMINI-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-X60003-30 | MS3PROMINI-A-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-X60003-29 | MS3PROMINI-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-X60005-6 | MS3PROMINI-A-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-X60005-7 | MS3PROMINI-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-X60005-4 | MS3PROMINI-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-X60005-8 | MS3PROMINI-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-X60003-13 | MS3PROMINI-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-X60003-6 | MS3PROMINI-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-X60003-26 | MS3PROMINI-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-X60003-7 | MS3PROMINI-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-X60003-11 | MS3PROMINI-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-X60003-8 | MS3PROMINI-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-X60001-1 | MS3PROMINI-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-X60002-23 | MS3PROMINI-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-X60004-10 | MS3PROMINI-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-X60003-10 | MS3PROMINI-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-X60003-1 | MS3PROMINI-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-X60003-32 | MS3PROMINI-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-X60004-8 | MS3PROMINI-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-X60003-31 | MS3PROMINI-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-X60004-13 | MS3PROMINI-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-X60003-28 | MS3PROMINI-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-X60003-27 | MS3PROMINI-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-X60003-16 | MS3PROMINI-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-X60003-50 | MS3PROMINI-A-34 | 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-1 | MS3PROMINI-A-2 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 4 | MS3PROMINI-A-21 | MS3PROMINI-A-2 | open (OL) | sensor ground 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 |
If any reading doesn't match, stop and get help before powering up.
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 | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 10 | Injector out F | — | W32 | — | 0.5 | OEM-X60003-13 | — | — | — |
| 11 | Injector out G | — | W33 | — | 0.5 | OEM-X60003-6 | — | — | — |
| 12 | Injector out H | — | W34 | — | 0.5 | OEM-X60003-26 | — | — | — |
| 13 | Analog in 1 | — | W42 | — | 0.5 | OEM-X60003-1 | — | — | — |
| 14 | Analog in 2 | — | W44 | — | 0.5 | OEM-X60004-8 | — | — | — |
| 15 | Analog in 3 | — | W45 | — | 0.5 | OEM-X60003-31 | — | — | — |
| 16 | Analog in 4 | — | W46 | — | 0.5 | OEM-X60004-13 | — | — | — |
| 17 | Spark out A | — | W28 | — | 0.5 | OEM-X60005-6 | — | — | — |
| 18 | Spark out B | — | W29 | — | 0.5 | OEM-X60005-7 | — | — | — |
| 19 | Spark out C | — | W30 | — | 0.5 | OEM-X60005-4 | — | — | — |
| 2 | +5V VREF out | — | W24 | — | 0.5 | SP-5V1-1 | — | — | — |
| 20 | Spark out D | — | W31 | — | 0.5 | OEM-X60005-8 | — | — | — |
| 21 | Sensor ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Power ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 23 | Power ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 24 | CAN Low | — | — | — | — | — | — | — | — |
| 25 | CAN High | — | — | — | — | — | — | — | — |
| 26 | CLT in | — | W47 | — | 0.5 | OEM-X60003-28 | — | — | — |
| 27 | IAT in | — | W48 | — | 0.5 | OEM-X60003-27 | — | — | — |
| 28 | TPS in | — | W43 | — | 0.5 | OEM-X60003-32 | — | — | — |
| 29 | Digital switched in 1 / Flex fuel | — | W49 | — | 0.5 | OEM-X60003-16 | — | — | — |
| 3 | PWM out 1 / Idle | — | W39 | — | 0.5 | OEM-X60002-23 | — | — | — |
| 30 | CKP+ | — | W25 | — | 0.5 | OEM-X60003-3 | — | — | — |
| 31 | CKP- | — | — | — | — | — | — | — | — |
| 32 | CMP+ | — | W26 | — | 0.5 | OEM-X60003-30 | — | — | — |
| 33 | CMP- | — | W27 | — | 0.5 | OEM-X60003-29 | — | — | — |
| 34 | Digital frequency in 1 (Hall) | — | W50 | — | 0.5 | OEM-X60003-50 | — | — | — |
| 35 | Digital frequency in 2 (Hall) | — | — | — | — | — | — | — | — |
| 4 | Fuel pump out | — | W38 | — | 0.5 | OEM-X60001-1 | — | — | — |
| 5 | Injector out A | — | W35 | — | 0.5 | OEM-X60003-7 | — | — | — |
| 6 | Injector out B | — | W36 | — | 0.5 | OEM-X60003-11 | — | — | — |
| 7 | Injector out C | — | W37 | — | 0.5 | OEM-X60003-8 | — | — | — |
| 8 | Injector out D | — | W40 | — | 0.5 | OEM-X60004-10 | — | — | — |
| 9 | Injector out E | — | W41 | — | 0.5 | OEM-X60003-10 | — | — | — |
OEM-X60001
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector relay control | — | W38 | — | 0.5 | MS3PROMINI-A-4 | — | — | — |
| 2 | DBW output-stage supply (P_DKSM+) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 7 | Battery constant (terminal 30) | — | — | — | — | — | — | — | — |
| 8 | ECU main power (terminal 87 via main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | DBW output-stage return (P_DKSM-) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-X60002
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | O2 sensor heater, front 1 (pre-cat) | — | — | — | — | — | — | — | — |
| 12 | O2 sensor heater, rear 2 (post-cat) | — | — | — | — | — | — | — | — |
| 14 | O2 sensor signal, rear 2 (post-cat) | — | — | — | — | — | — | — | — |
| 16 | O2 sensor signal, rear 1 (post-cat) | — | — | — | — | — | — | — | — |
| 2 | O2 sensor heater, front 2 (pre-cat) | — | — | — | — | — | — | — | — |
| 23 | Main relay control | — | W39 | — | 0.5 | MS3PROMINI-A-3 | — | — | — |
| 6 | O2 sensor heater, rear 1 (post-cat) | — | — | — | — | — | — | — | — |
OEM-X60003
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Mass air flow (MAF) signal | — | W42 | — | 0.5 | MS3PROMINI-A-13 | — | — | — |
| 10 | VANOS intake solenoid | — | W41 | — | 0.5 | MS3PROMINI-A-9 | — | — | — |
| 11 | Injector cylinder 5 | — | W36 | — | 0.5 | MS3PROMINI-A-6 | — | — | — |
| 12 | Map-controlled thermostat | — | — | — | — | — | — | — | — |
| 13 | Injector cylinder 1 | — | W32 | — | 0.5 | MS3PROMINI-A-10 | — | — | — |
| 15 | Throttle ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Oil pressure switch | — | W49 | — | 0.5 | MS3PROMINI-A-29 | — | — | — |
| 21 | Evap purge valve | — | — | — | — | — | — | — | — |
| 22 | Idle speed control, close | — | — | — | — | — | — | — | — |
| 23 | Idle speed control, open | — | — | — | — | — | — | — | — |
| 26 | Injector cylinder 3 | — | W34 | — | 0.5 | MS3PROMINI-A-12 | — | — | — |
| 27 | Intake air temperature (IAT) | — | W48 | — | 0.5 | MS3PROMINI-A-27 | — | — | — |
| 28 | Engine coolant temperature (ECT) | — | W47 | — | 0.5 | MS3PROMINI-A-26 | — | — | — |
| 29 | Intake camshaft position | — | W27 | — | 0.5 | MS3PROMINI-A-33 | — | — | — |
| 3 | Crankshaft position | — | W25 | — | 0.5 | MS3PROMINI-A-30 | — | — | — |
| 30 | Exhaust camshaft position | — | W26 | — | 0.5 | MS3PROMINI-A-32 | — | — | — |
| 31 | Throttle position sensor 2 | — | W45 | — | 0.5 | MS3PROMINI-A-15 | — | — | — |
| 32 | Throttle position sensor 1 | — | W43 | — | 0.5 | MS3PROMINI-A-28 | — | — | — |
| 33 | Knock sensor 1 | — | — | — | — | — | — | — | — |
| 34 | Knock sensor 2 | — | — | — | — | — | — | — | — |
| 35 | ECT ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 36 | Intake camshaft ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 37 | Crankshaft ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 4 | MAF supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 42 | Throttle motor drive 1 (H-bridge) | — | — | — | — | — | — | — | — |
| 43 | Throttle motor drive 2 (H-bridge) | — | — | — | — | — | — | — | — |
| 44 | Engine oil temperature | — | — | — | — | — | — | — | — |
| 45 | Oil temperature ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 46 | Knock sensor 3 | — | — | — | — | — | — | — | — |
| 47 | Knock sensor 4 | — | — | — | — | — | — | — | — |
| 49 | Exhaust camshaft ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Throttle (EDK/ITB) supply | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 50 | Oil level switch | — | W50 | — | 0.5 | MS3PROMINI-A-34 | — | — | — |
| 6 | Injector cylinder 2 | — | W33 | — | 0.5 | MS3PROMINI-A-11 | — | — | — |
| 7 | Injector cylinder 4 | — | W35 | — | 0.5 | MS3PROMINI-A-5 | — | — | — |
| 8 | Injector cylinder 6 | — | W37 | — | 0.5 | MS3PROMINI-A-7 | — | — | — |
| 9 | VANOS exhaust solenoid | — | — | — | — | — | — | — | — |
OEM-X60004
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Fuel pump relay control | — | W40 | — | 0.5 | MS3PROMINI-A-8 | — | — | — |
| 12 | Pedal ground 2 | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | Pedal position signal 2 | — | W46 | — | 0.5 | MS3PROMINI-A-16 | — | — | — |
| 14 | Pedal +5V supply 2 | — | W22 | — | 0.5 | SP-5V1-1 | — | — | — |
| 7 | Pedal ground 1 | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Pedal position signal 1 | — | W44 | — | 0.5 | MS3PROMINI-A-14 | — | — | — |
| 9 | Pedal +5V supply 1 | — | W23 | — | 0.5 | SP-5V1-1 | — | — | — |
OEM-X60005
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition coil 5 | — | — | — | — | — | — | — | — |
| 4 | Ignition coil 3 | — | W30 | — | 0.5 | MS3PROMINI-A-19 | — | — | — |
| 5 | Ignition ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Ignition coil 1 | — | W28 | — | 0.5 | MS3PROMINI-A-17 | — | — | — |
| 7 | Ignition coil 2 | — | W29 | — | 0.5 | MS3PROMINI-A-18 | — | — | — |
| 8 | Ignition coil 4 | — | W31 | — | 0.5 | MS3PROMINI-A-20 | — | — | — |
| 9 | Ignition coil 6 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-X60003-15 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-X60003-35 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-X60003-36 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-X60003-37 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-X60003-45 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-X60003-49 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-X60004-12 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-X60004-7 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | MS3PROMINI-A-21 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-X60001-2 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-X60001-8 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | OEM-X60003-4 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-X60003-5 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | MS3PROMINI-A-1 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W22 | — | 0.5 | OEM-X60004-14 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | OEM-X60004-9 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | MS3PROMINI-A-2 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-X60001-4 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-X60001-5 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-X60001-6 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-X60001-9 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-X60005-5 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MS3PROMINI-A-22 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | MS3PROMINI-A-23 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-X60001-1 | Injector relay control | low_side_out | MS3PROMINI-A-4 | Fuel pump out | low_side_out | corroborated | |
| OEM-X60001-2 | DBW output-stage supply (P_DKSM+) | power_in | MS3PROMINI-A-1 | 12V+ switched power in | power_in | single_source | |
| OEM-X60001-4 | Power ground | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | corroborated | |
| OEM-X60001-5 | Power ground | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | corroborated | |
| OEM-X60001-6 | Power ground | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | corroborated | |
| OEM-X60001-7 | Battery constant (terminal 30) | power_in | — | — | — | corroborated | |
| OEM-X60001-8 | ECU main power (terminal 87 via main relay) | power_in | MS3PROMINI-A-1 | 12V+ switched power in | power_in | corroborated | |
| OEM-X60001-9 | DBW output-stage return (P_DKSM-) | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | single_source | |
| OEM-X60002-1 | O2 sensor heater, front 1 (pre-cat) | low_side_out | — | — | — | corroborated | |
| OEM-X60002-12 | O2 sensor heater, rear 2 (post-cat) | low_side_out | — | — | — | corroborated | |
| OEM-X60002-14 | O2 sensor signal, rear 2 (post-cat) | lambda_nb_in | — | — | — | corroborated | |
| OEM-X60002-16 | O2 sensor signal, rear 1 (post-cat) | lambda_nb_in | — | — | — | corroborated | |
| OEM-X60002-2 | O2 sensor heater, front 2 (pre-cat) | low_side_out | — | — | — | corroborated | |
| OEM-X60002-23 | Main relay control | low_side_out | MS3PROMINI-A-3 | PWM out 1 / Idle | low_side_out | corroborated | |
| OEM-X60002-6 | O2 sensor heater, rear 1 (post-cat) | low_side_out | — | — | — | corroborated | |
| OEM-X60003-1 | Mass air flow (MAF) signal | analog_in | MS3PROMINI-A-13 | Analog in 1 | analog_in | corroborated | |
| OEM-X60003-10 | VANOS intake solenoid | low_side_out | MS3PROMINI-A-9 | Injector out E | injector_out | corroborated | |
| OEM-X60003-11 | Injector cylinder 5 | injector_out | MS3PROMINI-A-6 | Injector out B | injector_out | corroborated | |
| OEM-X60003-12 | Map-controlled thermostat | low_side_out | — | — | — | corroborated | |
| OEM-X60003-13 | Injector cylinder 1 | injector_out | MS3PROMINI-A-10 | Injector out F | injector_out | corroborated | |
| OEM-X60003-15 | Throttle ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60003-16 | Oil pressure switch | digital_in | MS3PROMINI-A-29 | Digital switched in 1 / Flex fuel | digital_in | corroborated | |
| OEM-X60003-21 | Evap purge valve | low_side_out | — | — | — | corroborated | |
| OEM-X60003-22 | Idle speed control, close | hbridge_out | — | — | — | corroborated | |
| OEM-X60003-23 | Idle speed control, open | hbridge_out | — | — | — | corroborated | |
| OEM-X60003-26 | Injector cylinder 3 | injector_out | MS3PROMINI-A-12 | Injector out H | injector_out | corroborated | |
| OEM-X60003-27 | Intake air temperature (IAT) | temp_in | MS3PROMINI-A-27 | IAT in | temp_in | corroborated | |
| OEM-X60003-28 | Engine coolant temperature (ECT) | temp_in | MS3PROMINI-A-26 | CLT in | temp_in | corroborated | |
| OEM-X60003-29 | Intake camshaft position | trigger_in | MS3PROMINI-A-33 | CMP- | trigger_in | corroborated | |
| OEM-X60003-3 | Crankshaft position | trigger_in | MS3PROMINI-A-30 | CKP+ | trigger_in | corroborated | |
| OEM-X60003-30 | Exhaust camshaft position | trigger_in | MS3PROMINI-A-32 | CMP+ | trigger_in | corroborated | |
| OEM-X60003-31 | Throttle position sensor 2 | analog_in | MS3PROMINI-A-15 | Analog in 3 | analog_in | corroborated | |
| OEM-X60003-32 | Throttle position sensor 1 | analog_in | MS3PROMINI-A-28 | TPS in | analog_in | corroborated | |
| OEM-X60003-33 | Knock sensor 1 | knock_in | — | — | — | corroborated | |
| OEM-X60003-34 | Knock sensor 2 | knock_in | — | — | — | corroborated | |
| OEM-X60003-35 | ECT ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60003-36 | Intake camshaft ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60003-37 | Crankshaft ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60003-4 | MAF supply | power_in | MS3PROMINI-A-1 | 12V+ switched power in | power_in | corroborated | |
| OEM-X60003-42 | Throttle motor drive 1 (H-bridge) | hbridge_out | — | — | — | corroborated | |
| OEM-X60003-43 | Throttle motor drive 2 (H-bridge) | hbridge_out | — | — | — | corroborated | |
| OEM-X60003-44 | Engine oil temperature | temp_in | — | — | — | corroborated | |
| OEM-X60003-45 | Oil temperature ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60003-46 | Knock sensor 3 | knock_in | — | — | — | corroborated | |
| OEM-X60003-47 | Knock sensor 4 | knock_in | — | — | — | corroborated | |
| OEM-X60003-49 | Exhaust camshaft ground | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60003-5 | Throttle (EDK/ITB) supply | power_in | MS3PROMINI-A-1 | 12V+ switched power in | power_in | corroborated | |
| OEM-X60003-50 | Oil level switch | digital_in | MS3PROMINI-A-34 | Digital frequency in 1 (Hall) | digital_in | corroborated | |
| OEM-X60003-6 | Injector cylinder 2 | injector_out | MS3PROMINI-A-11 | Injector out G | injector_out | corroborated | |
| OEM-X60003-7 | Injector cylinder 4 | injector_out | MS3PROMINI-A-5 | Injector out A | injector_out | corroborated | |
| OEM-X60003-8 | Injector cylinder 6 | injector_out | MS3PROMINI-A-7 | Injector out C | injector_out | corroborated | |
| OEM-X60003-9 | VANOS exhaust solenoid | low_side_out | — | — | — | corroborated | |
| OEM-X60004-10 | Fuel pump relay control | low_side_out | MS3PROMINI-A-8 | Injector out D | injector_out | corroborated | |
| OEM-X60004-12 | Pedal ground 2 | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60004-13 | Pedal position signal 2 | analog_in | MS3PROMINI-A-16 | Analog in 4 | analog_in | corroborated | |
| OEM-X60004-14 | Pedal +5V supply 2 | vref | MS3PROMINI-A-2 | +5V VREF out | vref | corroborated | |
| OEM-X60004-7 | Pedal ground 1 | sensor_ground | MS3PROMINI-A-21 | Sensor ground | sensor_ground | corroborated | |
| OEM-X60004-8 | Pedal position signal 1 | analog_in | MS3PROMINI-A-14 | Analog in 2 | analog_in | corroborated | |
| OEM-X60004-9 | Pedal +5V supply 1 | vref | MS3PROMINI-A-2 | +5V VREF out | vref | corroborated | |
| OEM-X60005-1 | Ignition coil 5 | ignition_out | — | — | — | corroborated | |
| OEM-X60005-4 | Ignition coil 3 | ignition_out | MS3PROMINI-A-19 | Spark out C | ignition_out | corroborated | |
| OEM-X60005-5 | Ignition ground | ground | MS3PROMINI-A-22 + MS3PROMINI-A-23 | Power ground + Power ground | ground | corroborated | |
| OEM-X60005-6 | Ignition coil 1 | ignition_out | MS3PROMINI-A-17 | Spark out A | ignition_out | corroborated | |
| OEM-X60005-7 | Ignition coil 2 | ignition_out | MS3PROMINI-A-18 | Spark out B | ignition_out | corroborated | |
| OEM-X60005-8 | Ignition coil 4 | ignition_out | MS3PROMINI-A-20 | Spark out D | ignition_out | corroborated | |
| OEM-X60005-9 | Ignition coil 6 | ignition_out | — | — | — | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-X60001-2 | SP-14V-1 | 0.85 | no route | DBW output-stage supply (P_DKSM+) | — | |
| W2 | OEM-X60001-8 | SP-14V-1 | 0.85 | no route | ECU main power (terminal 87 via main relay) | — | |
| W3 | OEM-X60003-4 | SP-14V-1 | 0.85 | no route | MAF supply | — | |
| W4 | OEM-X60003-5 | SP-14V-1 | 0.85 | no route | Throttle (EDK/ITB) supply | — | |
| W5 | SP-14V-1 | MS3PROMINI-A-1 | 0.85 | no route | 12V+ switched power in | — | |
| W6 | OEM-X60001-4 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-X60001-5 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-X60001-6 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | OEM-X60001-9 | SP-GND-1 | 0.85 | no route | DBW output-stage return (P_DKSM-) | — | |
| W10 | OEM-X60005-5 | SP-GND-1 | 0.85 | no route | Ignition ground | — | |
| W11 | SP-GND-1 | MS3PROMINI-A-22 | 0.85 | no route | Power ground | — | |
| W12 | SP-GND-1 | MS3PROMINI-A-23 | 0.85 | no route | Power ground | — | |
| W13 | OEM-X60003-15 | SP-0V-1 | 0.5 | no route | Throttle ground | — | |
| W14 | OEM-X60003-35 | SP-0V-1 | 0.5 | no route | ECT ground | — | |
| W15 | OEM-X60003-36 | SP-0V-1 | 0.5 | no route | Intake camshaft ground | — | |
| W16 | OEM-X60003-37 | SP-0V-1 | 0.5 | no route | Crankshaft ground | — | |
| W17 | OEM-X60003-45 | SP-0V-1 | 0.5 | no route | Oil temperature ground | — | |
| W18 | OEM-X60003-49 | SP-0V-1 | 0.5 | no route | Exhaust camshaft ground | — | |
| W19 | OEM-X60004-12 | SP-0V-1 | 0.5 | no route | Pedal ground 2 | — | |
| W20 | OEM-X60004-7 | SP-0V-1 | 0.5 | no route | Pedal ground 1 | — | |
| W21 | SP-0V-1 | MS3PROMINI-A-21 | 0.5 | no route | Sensor ground | — | |
| W22 | OEM-X60004-14 | SP-5V1-1 | 0.5 | no route | Pedal +5V supply 2 | — | |
| W23 | OEM-X60004-9 | SP-5V1-1 | 0.5 | no route | Pedal +5V supply 1 | — | |
| W24 | SP-5V1-1 | MS3PROMINI-A-2 | 0.5 | no route | +5V VREF out | — | |
| W25 | OEM-X60003-3 | MS3PROMINI-A-30 | 0.5 | no route | Crankshaft position | — | |
| W26 | OEM-X60003-30 | MS3PROMINI-A-32 | 0.5 | no route | Exhaust camshaft position | — | |
| W27 | OEM-X60003-29 | MS3PROMINI-A-33 | 0.5 | no route | Intake camshaft position | — | |
| W28 | OEM-X60005-6 | MS3PROMINI-A-17 | 0.5 | no route | Ignition coil 1 | — | |
| W29 | OEM-X60005-7 | MS3PROMINI-A-18 | 0.5 | no route | Ignition coil 2 | — | |
| W30 | OEM-X60005-4 | MS3PROMINI-A-19 | 0.5 | no route | Ignition coil 3 | — | |
| W31 | OEM-X60005-8 | MS3PROMINI-A-20 | 0.5 | no route | Ignition coil 4 | — | |
| W32 | OEM-X60003-13 | MS3PROMINI-A-10 | 0.5 | no route | Injector cylinder 1 | — | |
| W33 | OEM-X60003-6 | MS3PROMINI-A-11 | 0.5 | no route | Injector cylinder 2 | — | |
| W34 | OEM-X60003-26 | MS3PROMINI-A-12 | 0.5 | no route | Injector cylinder 3 | — | |
| W35 | OEM-X60003-7 | MS3PROMINI-A-5 | 0.5 | no route | Injector cylinder 4 | — | |
| W36 | OEM-X60003-11 | MS3PROMINI-A-6 | 0.5 | no route | Injector cylinder 5 | — | |
| W37 | OEM-X60003-8 | MS3PROMINI-A-7 | 0.5 | no route | Injector cylinder 6 | — | |
| W38 | OEM-X60001-1 | MS3PROMINI-A-4 | 0.5 | no route | Injector relay control | — | |
| W39 | OEM-X60002-23 | MS3PROMINI-A-3 | 0.5 | no route | Main relay control | — | |
| W40 | OEM-X60004-10 | MS3PROMINI-A-8 | 0.5 | no route | Fuel pump relay control | — | |
| W41 | OEM-X60003-10 | MS3PROMINI-A-9 | 0.5 | no route | VANOS intake solenoid | — | |
| W42 | OEM-X60003-1 | MS3PROMINI-A-13 | 0.5 | no route | Mass air flow (MAF) signal | — | |
| W43 | OEM-X60003-32 | MS3PROMINI-A-28 | 0.5 | no route | Throttle position sensor 1 | — | |
| W44 | OEM-X60004-8 | MS3PROMINI-A-14 | 0.5 | no route | Pedal position signal 1 | — | |
| W45 | OEM-X60003-31 | MS3PROMINI-A-15 | 0.5 | no route | Throttle position sensor 2 | — | |
| W46 | OEM-X60004-13 | MS3PROMINI-A-16 | 0.5 | no route | Pedal position signal 2 | — | |
| W47 | OEM-X60003-28 | MS3PROMINI-A-26 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W48 | OEM-X60003-27 | MS3PROMINI-A-27 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W49 | OEM-X60003-16 | MS3PROMINI-A-29 | 0.5 | no route | Oil pressure switch | — | |
| W50 | OEM-X60003-50 | MS3PROMINI-A-34 | 0.5 | no route | Oil level switch | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | BMW-E46-MSS54-CONN | BMW | E46 DME (MSS54) harness connector | 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 |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-X60003-42 | Required OEM function "Throttle motor drive 1 (H-bridge)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X60003-43 | Required OEM function "Throttle motor drive 2 (H-bridge)" (hbridge_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X60005-1 | Required OEM function "Ignition coil 5" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X60005-9 | Required OEM function "Ignition coil 6" (ignition_out) is not connected to the new ECU. |
| info | NET_FAMILY | OEM-X60003-10 ↔ MS3PROMINI-A-9 | OEM-X60003-10 "VANOS intake solenoid" [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-X60004-10 ↔ MS3PROMINI-A-8 | OEM-X60004-10 "Fuel pump relay control" [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 | 16 optional OEM pins are not mapped: OEM-X60002-1 O2 sensor heater, front 1 (pre-cat); OEM-X60002-12 O2 sensor heater, rear 2 (post-cat); OEM-X60002-14 O2 sensor signal, rear 2 (post-cat); OEM-X60002-16 O2 sensor signal, rear 1 (post-cat); OEM-X60002-2 O2 sensor heater, front 2 (pre-cat); OEM-X60002-6 O2 sensor heater, rear 1 (post-cat); OEM-X60003-12 Map-controlled thermostat; OEM-X60003-21 Evap purge valve; OEM-X60003-22 Idle speed control, close; OEM-X60003-23 Idle speed control, open; OEM-X60003-33 Knock sensor 1; OEM-X60003-34 Knock sensor 2; OEM-X60003-44 Engine oil temperature; OEM-X60003-46 Knock sensor 3; OEM-X60003-47 Knock sensor 4; OEM-X60003-9 VANOS exhaust solenoid |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-X60001-7 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Fit check: needs add-on. Resolve these before building: - Drive-by-wire only with an add-on: AMP Drive-By-Wire Controller - Needs CAN (E46 K-bus/CAN); not documented for this ECU - No knock input; the stock knock sensor would be unused - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - This car has EWS 3.3 (rolling code) immobilizer; needs a delete/bypass Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-X60005 1: Ignition coil 5: no free ignition output on AMP EFI MS3Pro Mini - OEM-X60005 9: Ignition coil 6: no free ignition output on AMP EFI MS3Pro Mini - OEM-X60003 42: Throttle motor drive 1 (H-bridge): no free hbridge on AMP EFI MS3Pro Mini - OEM-X60003 43: Throttle motor drive 2 (H-bridge): no free hbridge on AMP EFI MS3Pro Mini Not wired: - OEM-X60001 7: Battery constant (terminal 30): AMP EFI MS3Pro Mini has no battery-constant input; not needed - OEM-X60003 33: Knock sensor 1: no free knock input on AMP EFI MS3Pro Mini - OEM-X60003 34: Knock sensor 2: no free knock input on AMP EFI MS3Pro Mini - OEM-X60003 46: Knock sensor 3: no free knock input on AMP EFI MS3Pro Mini - OEM-X60003 47: Knock sensor 4: no free knock input on AMP EFI MS3Pro Mini - OEM-X60003 22: Idle speed control, close: no free hbridge on AMP EFI MS3Pro Mini - OEM-X60003 23: Idle speed control, open: no free hbridge on AMP EFI MS3Pro Mini - OEM-X60002 1: O2 sensor heater, front 1 (pre-cat): no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-X60002 12: O2 sensor heater, rear 2 (post-cat): no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-X60002 2: O2 sensor heater, front 2 (pre-cat): no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-X60002 6: O2 sensor heater, rear 1 (post-cat): no free heater_low_side/low_side/ls_hs/hbridge on AMP EFI MS3Pro Mini - OEM-X60003 12: Map-controlled thermostat: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-X60003 21: Evap purge valve: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-X60003 9: VANOS exhaust solenoid: no free low_side/ls_hs/injector/hbridge on AMP EFI MS3Pro Mini - OEM-X60002 14: O2 sensor signal, rear 2 (post-cat): no free o2_narrowband/analog_0_5 on AMP EFI MS3Pro Mini - OEM-X60002 16: O2 sensor signal, rear 1 (post-cat): no free o2_narrowband/analog_0_5 on AMP EFI MS3Pro Mini - OEM-X60003 44: Engine oil temperature: no free thermistor/analog_0_5 on AMP EFI MS3Pro Mini
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 |
| 4 | oem_wiring_diagram | BMW WDS A6000 DME pin table, E83 X3 (M54B30/MS45) | https://wds.psjr.org/sv/e83/zinfo/E83_PA6000A.htm | — | — | — |
| 2 | community_copy | bimmer-service: DME MSS54 (S54) pinout | https://www.bimmer-service.com/2025/11/14/dme-mss54-s54-pinout-schematic-diagram/ | — | — | — |
| 2 | community_copy | rusefi wiki: 2002 and 2004 BMW M3 E46 DME pinout (S54/MSS54) | https://github.com/rusefi/rusefi/wiki/2002-and-2004-BMW-M3-E46-DME-pinout | — | — | — |