BMW 3 Series E36 1990–2000 (M50/M52) → AMP EFI MS3Pro Ultimate (auto)
BMW 3 Series E36 1990–2000 (M50/M52) — AMP EFI — MS3Pro Ultimate
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 | 60 wires · 7 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-X-54 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | MS3PROULTIMA-A-35 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-X-26 | MS3PROULTIMA-C-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-X-15 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-X-34 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-X-55 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-X-6 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | MS3PROULTIMA-A-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | MS3PROULTIMA-B-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MS3PROULTIMA-B-3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MS3PROULTIMA-B-5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | MS3PROULTIMA-B-7 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | MS3PROULTIMA-B-9 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-X-28 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-X-40 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-X-43 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-X-44 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-X-71 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MS3PROULTIMA-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MS3PROULTIMA-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | MS3PROULTIMA-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | MS3PROULTIMA-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | MS3PROULTIMA-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | MS3PROULTIMA-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | MS3PROULTIMA-C-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-X-59 | MS3PROULTIMA-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-X-16 | MS3PROULTIMA-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | SP-0V-1 | MS3PROULTIMA-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-X-17 | MS3PROULTIMA-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | SP-0V-1 | MS3PROULTIMA-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-X-70 | MS3PROULTIMA-A-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-X-69 | MS3PROULTIMA-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-X-50 | MS3PROULTIMA-B-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-X-51 | MS3PROULTIMA-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-X-52 | MS3PROULTIMA-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-X-23 | MS3PROULTIMA-B-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-X-25 | MS3PROULTIMA-B-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-X-24 | MS3PROULTIMA-B-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-X-33 | MS3PROULTIMA-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-X-32 | MS3PROULTIMA-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-X-31 | MS3PROULTIMA-B-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-X-5 | MS3PROULTIMA-B-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-X-3 | MS3PROULTIMA-B-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-X-4 | MS3PROULTIMA-B-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-X-56 | MS3PROULTIMA-B-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-X-1 | MS3PROULTIMA-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-X-27 | MS3PROULTIMA-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-X-38 | MS3PROULTIMA-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-X-2 | MS3PROULTIMA-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-X-29 | MS3PROULTIMA-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-X-36 | MS3PROULTIMA-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-X-7 | MS3PROULTIMA-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-X-8 | MS3PROULTIMA-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-X-47 | MS3PROULTIMA-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-X-41 | MS3PROULTIMA-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-X-73 | MS3PROULTIMA-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-X-13 | MS3PROULTIMA-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-X-78 | MS3PROULTIMA-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-X-77 | MS3PROULTIMA-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-X-42 | MS3PROULTIMA-B-28 | 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 | MS3PROULTIMA-C-23 | MS3PROULTIMA-A-15 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | MS3PROULTIMA-A-13 | MS3PROULTIMA-A-35 | open (OL) | power ground must not touch +12 V supply | |
| 3 | MS3PROULTIMA-A-13 | MS3PROULTIMA-A-8 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | MS3PROULTIMA-A-13 | MS3PROULTIMA-C-23 | open (OL) | power ground must not touch +12 V supply | |
| 5 | MS3PROULTIMA-A-15 | MS3PROULTIMA-A-35 | open (OL) | sensor ground must not touch +12 V supply | |
| 6 | MS3PROULTIMA-A-15 | MS3PROULTIMA-A-8 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 7 | MS3PROULTIMA-A-35 | MS3PROULTIMA-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 8 | MS3PROULTIMA-C-23 | MS3PROULTIMA-A-8 | open (OL) | +12 V supply must not touch 5 V sensor reference |
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 | — | — | — | — | — | — | — | — |
| 10 | MAT in | — | W58 | — | 0.5 | OEM-X-78 | — | — | — |
| 11 | CLT in | — | W59 | — | 0.5 | OEM-X-77 | — | — | — |
| 12 | Analog In 6 | — | — | — | — | — | — | — | — |
| 13 | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | PWM / Idle Out 1 | — | W47 | — | 0.5 | OEM-X-27 | — | — | — |
| 15 | CKP− | — | W28 | — | 0.5 | SP-0V-1 | — | — | — |
| 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 | — | W55 | — | 0.5 | OEM-X-41 | — | — | — |
| 2 | High current out 2 | — | — | — | — | — | — | — | — |
| 20 | Analog in 2 | — | — | — | — | — | — | — | — |
| 21 | Analog in 3 | — | — | — | — | — | — | — | — |
| 22 | Analog In 4 | — | — | — | — | — | — | — | — |
| 23 | Analog In 5 | — | — | — | — | — | — | — | — |
| 24 | Tach out | — | W54 | — | 0.5 | OEM-X-47 | — | — | — |
| 25 | O2 in | — | W57 | — | 0.5 | OEM-X-13 | — | — | — |
| 26 | CMP+ | — | W29 | — | 0.5 | OEM-X-17 | — | — | — |
| 27 | CMP− | — | W30 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Fuel pump relay out | — | W46 | — | 0.5 | OEM-X-1 | — | — | — |
| 29 | PWM out 2 | — | W49 | — | 0.5 | OEM-X-2 | — | — | — |
| 3 | Injector out J | — | W39 | — | 0.5 | OEM-X-33 | — | — | — |
| 30 | PWM out 3 | — | W51 | — | 0.5 | OEM-X-36 | — | — | — |
| 31 | Knock in 1 | — | W31 | — | 0.5 | OEM-X-70 | — | — | — |
| 32 | Digital switched in 1 | — | — | — | — | — | — | — | — |
| 33 | CAN L | — | — | — | — | — | — | — | — |
| 34 | CAN H | — | — | — | — | — | — | — | — |
| 35 | 12V+ switched power in | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 4 | Injector out I | — | W40 | — | 0.5 | OEM-X-32 | — | — | — |
| 5 | High current out 3 | — | — | — | — | — | — | — | — |
| 6 | CKP+ | — | W27 | — | 0.5 | OEM-X-16 | — | — | — |
| 7 | Knock In 2 | — | W32 | — | 0.5 | OEM-X-69 | — | — | — |
| 8 | 5V+ VREF out 1 | — | W26 | — | 0.5 | OEM-X-59 | — | — | — |
| 9 | TPS in | — | W56 | — | 0.5 | OEM-X-73 | — | — | — |
MS3PROULTIMA-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector out A | — | W41 | — | 0.5 | OEM-X-31 | — | — | — |
| 10 | Injector out F | — | W42 | — | 0.5 | OEM-X-5 | — | — | — |
| 11 | Injector out G | — | W43 | — | 0.5 | OEM-X-3 | — | — | — |
| 12 | Injector out H | — | W44 | — | 0.5 | OEM-X-4 | — | — | — |
| 13 | Spark out G | — | W33 | — | 0.5 | OEM-X-50 | — | — | — |
| 14 | Spark out E | — | W34 | — | 0.5 | OEM-X-51 | — | — | — |
| 15 | Spark out C | — | W35 | — | 0.5 | OEM-X-52 | — | — | — |
| 16 | Spark out H | — | W36 | — | 0.5 | OEM-X-23 | — | — | — |
| 17 | Digital frequency in 2 | — | — | — | — | — | — | — | — |
| 18 | Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Digital switched 12V in | — | W45 | — | 0.5 | OEM-X-56 | — | — | — |
| 2 | Injector out B | — | — | — | — | — | — | — | — |
| 20 | Digital switched in 2 | — | — | — | — | — | — | — | — |
| 21 | Digital frequency in 3 | — | — | — | — | — | — | — | — |
| 22 | Digital Frequency in 3 VR+ | — | — | — | — | — | — | — | — |
| 23 | Digital Frequency In 3 VR− | — | — | — | — | — | — | — | — |
| 24 | Spark out F | — | W37 | — | 0.5 | OEM-X-25 | — | — | — |
| 25 | Spark out B | — | W38 | — | 0.5 | OEM-X-24 | — | — | — |
| 26 | Spark out D | — | — | — | — | — | — | — | — |
| 27 | Spark out A | — | — | — | — | — | — | — | — |
| 28 | Digital frequency in 1 | — | W60 | — | 0.5 | OEM-X-42 | — | — | — |
| 29 | Digital switched in 3 | — | — | — | — | — | — | — | — |
| 3 | Ground | — | W10 | — | 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+ | — | — | — | — | — | — | — | — |
| 35 | Digital Frequency in 1 VR− | — | — | — | — | — | — | — | — |
| 4 | Injector out C | — | — | — | — | — | — | — | — |
| 5 | Ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Injector out D | — | — | — | — | — | — | — | — |
| 7 | Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Injector out E | — | — | — | — | — | — | — | — |
| 9 | Ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
MS3PROULTIMA-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | PWM out 5 | — | W53 | — | 0.5 | OEM-X-8 | — | — | — |
| 10 | Digital switched in 5 | — | — | — | — | — | — | — | — |
| 11 | Digital switched in 4 | — | — | — | — | — | — | — | — |
| 12 | Digital I/O 5 | — | — | — | — | — | — | — | — |
| 13 | Digital I/O 3 | — | — | — | — | — | — | — | — |
| 14 | Digital I/O 1 | — | — | — | — | — | — | — | — |
| 15 | 5V+ VREF out 2 | — | — | — | — | — | — | — | — |
| 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 | — | W52 | — | 0.5 | OEM-X-7 | — | — | — |
| 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 | — | W3 | — | 0.85 | OEM-X-26 | — | — | — |
| 3 | Digital out 2 | — | W50 | — | 0.5 | OEM-X-29 | — | — | — |
| 4 | Digital out 1 | — | W48 | — | 0.5 | OEM-X-38 | — | — | — |
| 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-X
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Fuel pump relay control | — | W46 | — | 0.5 | MS3PROULTIMA-A-28 | — | — | — |
| 13 | O2 sensor signal | — | W57 | — | 0.5 | MS3PROULTIMA-A-25 | — | — | — |
| 15 | Ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 16 | Crank position sensor (+) | — | W27 | — | 0.5 | MS3PROULTIMA-A-6 | — | — | — |
| 17 | Camshaft position sensor (Hall) | — | W29 | — | 0.5 | MS3PROULTIMA-A-26 | — | — | — |
| 2 | Idle speed control valve (close winding) | — | W49 | — | 0.5 | MS3PROULTIMA-A-29 | — | — | — |
| 23 | Ignition coil cylinder 4 | — | W36 | — | 0.5 | MS3PROULTIMA-B-16 | — | — | — |
| 24 | Ignition coil cylinder 6 | — | W38 | — | 0.5 | MS3PROULTIMA-B-25 | — | — | — |
| 25 | Ignition coil cylinder 5 | — | W37 | — | 0.5 | MS3PROULTIMA-B-24 | — | — | — |
| 26 | Battery voltage (constant +12V) | — | W3 | — | 0.85 | MS3PROULTIMA-C-23 | — | — | — |
| 27 | Main relay control | — | W47 | — | 0.5 | MS3PROULTIMA-A-14 | — | — | — |
| 28 | Ground (electronics + sensor shielding) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 29 | Idle speed control valve (open winding) | — | W50 | — | 0.5 | MS3PROULTIMA-C-3 | — | — | — |
| 3 | Injector cylinder 5 | — | W43 | — | 0.5 | MS3PROULTIMA-B-11 | — | — | — |
| 31 | Injector cylinder 3 | — | W41 | — | 0.5 | MS3PROULTIMA-B-1 | — | — | — |
| 32 | Injector cylinder 2 | — | W40 | — | 0.5 | MS3PROULTIMA-A-4 | — | — | — |
| 33 | Injector cylinder 1 | — | W39 | — | 0.5 | MS3PROULTIMA-A-3 | — | — | — |
| 34 | Ground (output stages) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 36 | Evap purge solenoid | — | W51 | — | 0.5 | MS3PROULTIMA-A-30 | — | — | — |
| 38 | O2 sensor heater relay control | — | W48 | — | 0.5 | MS3PROULTIMA-C-4 | — | — | — |
| 4 | Injector cylinder 6 | — | W44 | — | 0.5 | MS3PROULTIMA-B-12 | — | — | — |
| 40 | O2 sensor signal ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 41 | Mass air flow (MAF) signal | — | W55 | — | 0.5 | MS3PROULTIMA-A-19 | — | — | — |
| 42 | Vehicle speed signal | — | W60 | — | 0.5 | MS3PROULTIMA-B-28 | — | — | — |
| 43 | Crank position sensor (-) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 44 | Sensor ground (IAT/ECT/TPS) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 45 | Shield ground | — | — | — | — | — | — | — | — |
| 47 | Tachometer output | — | W54 | — | 0.5 | MS3PROULTIMA-A-24 | — | — | — |
| 5 | Injector cylinder 4 | — | W42 | — | 0.5 | MS3PROULTIMA-B-10 | — | — | — |
| 50 | Ignition coil cylinder 1 | — | W33 | — | 0.5 | MS3PROULTIMA-B-13 | — | — | — |
| 51 | Ignition coil cylinder 2 | — | W34 | — | 0.5 | MS3PROULTIMA-B-14 | — | — | — |
| 52 | Ignition coil cylinder 3 | — | W35 | — | 0.5 | MS3PROULTIMA-B-15 | — | — | — |
| 54 | ECU power (+14V from main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 55 | Ground (ignition) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 56 | Ignition switch (terminal 15) | — | W45 | — | 0.5 | MS3PROULTIMA-B-19 | — | — | — |
| 59 | +5V sensor supply | — | W26 | — | 0.5 | MS3PROULTIMA-A-8 | — | — | — |
| 6 | Ground (injector output stages) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 69 | Knock sensor cylinders 4-6 | — | W32 | — | 0.5 | MS3PROULTIMA-A-7 | — | — | — |
| 7 | VANOS intake camshaft solenoid | — | W52 | — | 0.5 | MS3PROULTIMA-C-2 | — | — | — |
| 70 | Knock sensor cylinders 1-3 | — | W31 | — | 0.5 | MS3PROULTIMA-A-31 | — | — | — |
| 71 | Knock sensor ground/shield | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 73 | Throttle position (TPS) | — | W56 | — | 0.5 | MS3PROULTIMA-A-9 | — | — | — |
| 77 | Intake air temperature (IAT) | — | W59 | — | 0.5 | MS3PROULTIMA-A-11 | — | — | — |
| 78 | Engine coolant temperature (ECT) | — | W58 | — | 0.5 | MS3PROULTIMA-A-10 | — | — | — |
| 8 | Check engine light (MIL) | — | W53 | — | 0.5 | MS3PROULTIMA-C-1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-X-28 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-X-40 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-X-43 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-X-44 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-X-71 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MS3PROULTIMA-A-16 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MS3PROULTIMA-A-18 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | MS3PROULTIMA-C-17 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | MS3PROULTIMA-C-18 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | MS3PROULTIMA-C-19 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | MS3PROULTIMA-C-20 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | MS3PROULTIMA-C-21 | — | — | — |
| 1 | — | — | W28 | — | 0.5 | MS3PROULTIMA-A-15 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | MS3PROULTIMA-A-27 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-X-54 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | MS3PROULTIMA-A-35 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-X-15 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-X-34 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-X-55 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-X-6 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | MS3PROULTIMA-A-13 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | MS3PROULTIMA-B-18 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MS3PROULTIMA-B-3 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MS3PROULTIMA-B-5 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | MS3PROULTIMA-B-7 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | MS3PROULTIMA-B-9 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-X-1 | Fuel pump relay control | low_side_out | MS3PROULTIMA-A-28 | Fuel pump relay out | low_side_out | corroborated | |
| OEM-X-13 | O2 sensor signal | lambda_nb_in | MS3PROULTIMA-A-25 | O2 in | lambda_nb_in | corroborated | |
| OEM-X-15 | 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 | corroborated | |
| OEM-X-16 | Crank position sensor (+) | trigger_in | MS3PROULTIMA-A-6 | CKP+ | trigger_in | corroborated | |
| OEM-X-17 | Camshaft position sensor (Hall) | trigger_in | MS3PROULTIMA-A-26 | CMP+ | trigger_in | corroborated | |
| OEM-X-2 | Idle speed control valve (close winding) | low_side_out | MS3PROULTIMA-A-29 | PWM out 2 | low_side_out | corroborated | |
| OEM-X-23 | Ignition coil cylinder 4 | ignition_out | MS3PROULTIMA-B-16 | Spark out H | ignition_out | corroborated | |
| OEM-X-24 | Ignition coil cylinder 6 | ignition_out | MS3PROULTIMA-B-25 | Spark out B | ignition_out | corroborated | |
| OEM-X-25 | Ignition coil cylinder 5 | ignition_out | MS3PROULTIMA-B-24 | Spark out F | ignition_out | corroborated | |
| OEM-X-26 | Battery voltage (constant +12V) | power_in | MS3PROULTIMA-C-23 | Keep alive power | power_in | corroborated | |
| OEM-X-27 | Main relay control | low_side_out | MS3PROULTIMA-A-14 | PWM / Idle Out 1 | low_side_out | corroborated | |
| OEM-X-28 | Ground (electronics + sensor shielding) | sensor_ground | MS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-X-29 | Idle speed control valve (open winding) | low_side_out | MS3PROULTIMA-C-3 | Digital out 2 | low_side_out | corroborated | |
| OEM-X-3 | Injector cylinder 5 | injector_out | MS3PROULTIMA-B-11 | Injector out G | injector_out | corroborated | |
| OEM-X-31 | Injector cylinder 3 | injector_out | MS3PROULTIMA-B-1 | Injector out A | injector_out | corroborated | |
| OEM-X-32 | Injector cylinder 2 | injector_out | MS3PROULTIMA-A-4 | Injector out I | injector_out | corroborated | |
| OEM-X-33 | Injector cylinder 1 | injector_out | MS3PROULTIMA-A-3 | Injector out J | injector_out | corroborated | |
| OEM-X-34 | Ground (output stages) | 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-X-36 | Evap purge solenoid | low_side_out | MS3PROULTIMA-A-30 | PWM out 3 | low_side_out | corroborated | |
| OEM-X-38 | O2 sensor heater relay control | low_side_out | MS3PROULTIMA-C-4 | Digital out 1 | low_side_out | corroborated | |
| OEM-X-4 | Injector cylinder 6 | injector_out | MS3PROULTIMA-B-12 | Injector out H | injector_out | corroborated | |
| OEM-X-40 | O2 sensor signal ground | sensor_ground | MS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-X-41 | Mass air flow (MAF) signal | analog_in | MS3PROULTIMA-A-19 | Analog in 1 | analog_in | corroborated | |
| OEM-X-42 | Vehicle speed signal | digital_in | MS3PROULTIMA-B-28 | Digital frequency in 1 | digital_in | corroborated | |
| OEM-X-43 | Crank position sensor (-) | sensor_ground | MS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-X-44 | Sensor ground (IAT/ECT/TPS) | sensor_ground | MS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-X-45 | Shield ground | shield | — | — | — | corroborated | |
| OEM-X-47 | Tachometer output | tacho_out | MS3PROULTIMA-A-24 | Tach out | tacho_out | corroborated | |
| OEM-X-5 | Injector cylinder 4 | injector_out | MS3PROULTIMA-B-10 | Injector out F | injector_out | corroborated | |
| OEM-X-50 | Ignition coil cylinder 1 | ignition_out | MS3PROULTIMA-B-13 | Spark out G | ignition_out | corroborated | |
| OEM-X-51 | Ignition coil cylinder 2 | ignition_out | MS3PROULTIMA-B-14 | Spark out E | ignition_out | corroborated | |
| OEM-X-52 | Ignition coil cylinder 3 | ignition_out | MS3PROULTIMA-B-15 | Spark out C | ignition_out | corroborated | |
| OEM-X-54 | ECU power (+14V from main relay) | power_in | MS3PROULTIMA-A-35 | 12V+ switched power in | power_in | corroborated | |
| OEM-X-55 | Ground (ignition) | 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-X-56 | Ignition switch (terminal 15) | digital_in | MS3PROULTIMA-B-19 | Digital switched 12V in | digital_in | corroborated | |
| OEM-X-59 | +5V sensor supply | vref | MS3PROULTIMA-A-8 | 5V+ VREF out 1 | vref | corroborated | |
| OEM-X-6 | Ground (injector output stages) | 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-X-69 | Knock sensor cylinders 4-6 | knock_in | MS3PROULTIMA-A-7 | Knock In 2 | knock_in | corroborated | |
| OEM-X-7 | VANOS intake camshaft solenoid | low_side_out | MS3PROULTIMA-C-2 | PWM out 4 | low_side_out | corroborated | |
| OEM-X-70 | Knock sensor cylinders 1-3 | knock_in | MS3PROULTIMA-A-31 | Knock in 1 | knock_in | corroborated | |
| OEM-X-71 | Knock sensor ground/shield | sensor_ground | MS3PROULTIMA-A-15 + MS3PROULTIMA-A-16 + MS3PROULTIMA-A-18 + MS3PROULTIMA-A-27 + MS3PROULTIMA-C-17 + MS3PROULTIMA-C-18 + MS3PROULTIMA-C-19 + MS3PROULTIMA-C-20 + MS3PROULTIMA-C-21 | CKP− + Logic ground + Sensor return + CMP− + Sensor return + Sensor return + Sensor return + Sensor return + Sensor return | sensor_ground + trigger_in | corroborated | |
| OEM-X-73 | Throttle position (TPS) | analog_in | MS3PROULTIMA-A-9 | TPS in | analog_in | corroborated | |
| OEM-X-77 | Intake air temperature (IAT) | temp_in | MS3PROULTIMA-A-11 | CLT in | temp_in | corroborated | |
| OEM-X-78 | Engine coolant temperature (ECT) | temp_in | MS3PROULTIMA-A-10 | MAT in | temp_in | corroborated | |
| OEM-X-8 | Check engine light (MIL) | low_side_out | MS3PROULTIMA-C-1 | PWM out 5 | low_side_out | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-X-54 | SP-14V-1 | 0.85 | no route | ECU power (+14V from main relay) | — | |
| W2 | SP-14V-1 | MS3PROULTIMA-A-35 | 0.85 | no route | 12V+ switched power in | — | |
| W3 | OEM-X-26 | MS3PROULTIMA-C-23 | 0.85 | no route | Battery voltage (constant +12V) | — | |
| W4 | OEM-X-15 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W5 | OEM-X-34 | SP-GND-1 | 0.85 | no route | Ground (output stages) | — | |
| W6 | OEM-X-55 | SP-GND-1 | 0.85 | no route | Ground (ignition) | — | |
| W7 | OEM-X-6 | SP-GND-1 | 0.85 | no route | Ground (injector output stages) | — | |
| W8 | SP-GND-1 | MS3PROULTIMA-A-13 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | MS3PROULTIMA-B-18 | 0.85 | no route | Ground | — | |
| W10 | SP-GND-1 | MS3PROULTIMA-B-3 | 0.85 | no route | Ground | — | |
| W11 | SP-GND-1 | MS3PROULTIMA-B-5 | 0.85 | no route | Ground | — | |
| W12 | SP-GND-1 | MS3PROULTIMA-B-7 | 0.85 | no route | Ground | — | |
| W13 | SP-GND-1 | MS3PROULTIMA-B-9 | 0.85 | no route | Ground | — | |
| W14 | OEM-X-28 | SP-0V-1 | 0.5 | no route | Ground (electronics + sensor shielding) | — | |
| W15 | OEM-X-40 | SP-0V-1 | 0.5 | no route | O2 sensor signal ground | — | |
| W16 | OEM-X-43 | SP-0V-1 | 0.5 | no route | Crank position sensor (-) | — | |
| W17 | OEM-X-44 | SP-0V-1 | 0.5 | no route | Sensor ground (IAT/ECT/TPS) | — | |
| W18 | OEM-X-71 | SP-0V-1 | 0.5 | no route | Knock sensor ground/shield | — | |
| 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-X-59 | MS3PROULTIMA-A-8 | 0.5 | no route | +5V sensor supply | — | |
| W27 | OEM-X-16 | MS3PROULTIMA-A-6 | 0.5 | no route | Crank position sensor (+) | — | |
| W28 | SP-0V-1 | MS3PROULTIMA-A-15 | 0.5 | no route | CKP− | — | |
| W29 | OEM-X-17 | MS3PROULTIMA-A-26 | 0.5 | no route | Camshaft position sensor (Hall) | — | |
| W30 | SP-0V-1 | MS3PROULTIMA-A-27 | 0.5 | no route | CMP− | — | |
| W31 | OEM-X-70 | MS3PROULTIMA-A-31 | 0.5 | no route | Knock sensor cylinders 1-3 | — | |
| W32 | OEM-X-69 | MS3PROULTIMA-A-7 | 0.5 | no route | Knock sensor cylinders 4-6 | — | |
| W33 | OEM-X-50 | MS3PROULTIMA-B-13 | 0.5 | no route | Ignition coil cylinder 1 | — | |
| W34 | OEM-X-51 | MS3PROULTIMA-B-14 | 0.5 | no route | Ignition coil cylinder 2 | — | |
| W35 | OEM-X-52 | MS3PROULTIMA-B-15 | 0.5 | no route | Ignition coil cylinder 3 | — | |
| W36 | OEM-X-23 | MS3PROULTIMA-B-16 | 0.5 | no route | Ignition coil cylinder 4 | — | |
| W37 | OEM-X-25 | MS3PROULTIMA-B-24 | 0.5 | no route | Ignition coil cylinder 5 | — | |
| W38 | OEM-X-24 | MS3PROULTIMA-B-25 | 0.5 | no route | Ignition coil cylinder 6 | — | |
| W39 | OEM-X-33 | MS3PROULTIMA-A-3 | 0.5 | no route | Injector cylinder 1 | — | |
| W40 | OEM-X-32 | MS3PROULTIMA-A-4 | 0.5 | no route | Injector cylinder 2 | — | |
| W41 | OEM-X-31 | MS3PROULTIMA-B-1 | 0.5 | no route | Injector cylinder 3 | — | |
| W42 | OEM-X-5 | MS3PROULTIMA-B-10 | 0.5 | no route | Injector cylinder 4 | — | |
| W43 | OEM-X-3 | MS3PROULTIMA-B-11 | 0.5 | no route | Injector cylinder 5 | — | |
| W44 | OEM-X-4 | MS3PROULTIMA-B-12 | 0.5 | no route | Injector cylinder 6 | — | |
| W45 | OEM-X-56 | MS3PROULTIMA-B-19 | 0.5 | no route | Ignition switch (terminal 15) | — | |
| W46 | OEM-X-1 | MS3PROULTIMA-A-28 | 0.5 | no route | Fuel pump relay control | — | |
| W47 | OEM-X-27 | MS3PROULTIMA-A-14 | 0.5 | no route | Main relay control | — | |
| W48 | OEM-X-38 | MS3PROULTIMA-C-4 | 0.5 | no route | O2 sensor heater relay control | — | |
| W49 | OEM-X-2 | MS3PROULTIMA-A-29 | 0.5 | no route | Idle speed control valve (close winding) | — | |
| W50 | OEM-X-29 | MS3PROULTIMA-C-3 | 0.5 | no route | Idle speed control valve (open winding) | — | |
| W51 | OEM-X-36 | MS3PROULTIMA-A-30 | 0.5 | no route | Evap purge solenoid | — | |
| W52 | OEM-X-7 | MS3PROULTIMA-C-2 | 0.5 | no route | VANOS intake camshaft solenoid | — | |
| W53 | OEM-X-8 | MS3PROULTIMA-C-1 | 0.5 | no route | Check engine light (MIL) | — | |
| W54 | OEM-X-47 | MS3PROULTIMA-A-24 | 0.5 | no route | Tachometer output | — | |
| W55 | OEM-X-41 | MS3PROULTIMA-A-19 | 0.5 | no route | Mass air flow (MAF) signal | — | |
| W56 | OEM-X-73 | MS3PROULTIMA-A-9 | 0.5 | no route | Throttle position (TPS) | — | |
| W57 | OEM-X-13 | MS3PROULTIMA-A-25 | 0.5 | no route | O2 sensor signal | — | |
| W58 | OEM-X-78 | MS3PROULTIMA-A-10 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W59 | OEM-X-77 | MS3PROULTIMA-A-11 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W60 | OEM-X-42 | MS3PROULTIMA-B-28 | 0.5 | no route | Vehicle speed signal | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | BMW-E36-DME-CONN | BMW | E36 DME (M3.1/M3.3.1) 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 (2)
| Severity | Code | Subject | Message |
|---|---|---|---|
| info | NET_FAMILY | OEM-X-28 ↔ MS3PROULTIMA-A-15 | OEM-X-28 "Ground (electronics + sensor shielding)" [sensor_ground] is wired to MS3PROULTIMA-A-15 "CKP−" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-X-45 Shield ground |
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-X 45: Shield ground: no shield pin on AMP EFI MS3Pro Ultimate
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 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 | archive | 2026-10-05 | 71ed7ed81581 |
| 4 | vendor_doc | Link BMWLink E36X (G4X) plug-in install manual | https://linkecu.com/documentation/E36X.pdf | archive | 2026-10-05 | 010cda3acd08 |
| 2 | community_copy | bimmer-service: Bosch Motronic M3.3.1 pinout (E36 M50) | https://www.bimmer-service.com/2025/11/17/bosch-motronic-m3-3-1-pinout-wiring-diagram/ | — | — | — |