BMW 3 Series E36 1990–2000 (M50/M52) → ECUMASTER EMU Black (auto)
BMW 3 Series E36 1990–2000 (M50/M52) — ECUMASTER — EMU Black
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 | 50 wires · 6 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 | EMUBLACK-Black-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | OEM-X-15 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-X-34 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-X-55 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-X-6 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | EMUBLACK-Black-27 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | EMUBLACK-Black-28 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | EMUBLACK-Grey-17 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | EMUBLACK-Grey-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | OEM-X-28 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-X-40 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-X-43 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-X-44 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-X-71 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | EMUBLACK-Black-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | EMUBLACK-Black-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | EMUBLACK-Black-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-X-59 | EMUBLACK-Black-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-X-16 | EMUBLACK-Black-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-X-17 | EMUBLACK-Black-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-X-70 | EMUBLACK-Black-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-X-69 | EMUBLACK-Black-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-X-50 | EMUBLACK-Grey-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-X-51 | EMUBLACK-Grey-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-X-52 | EMUBLACK-Grey-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-X-23 | EMUBLACK-Black-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-X-25 | EMUBLACK-Black-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-X-24 | EMUBLACK-Grey-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-X-33 | EMUBLACK-Grey-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-X-32 | EMUBLACK-Grey-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-X-31 | EMUBLACK-Grey-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-X-5 | EMUBLACK-Grey-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-X-3 | EMUBLACK-Grey-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-X-4 | EMUBLACK-Grey-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-X-56 | EMUBLACK-Grey-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-X-1 | EMUBLACK-Grey-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-X-27 | EMUBLACK-Grey-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-X-38 | EMUBLACK-Grey-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-X-2 | EMUBLACK-Grey-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-X-29 | EMUBLACK-Grey-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-X-36 | EMUBLACK-Grey-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-X-7 | EMUBLACK-Grey-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-X-8 | EMUBLACK-Grey-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-X-41 | EMUBLACK-Black-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-X-73 | EMUBLACK-Black-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-X-13 | EMUBLACK-Black-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-X-78 | EMUBLACK-Black-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-X-77 | EMUBLACK-Black-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-X-42 | EMUBLACK-Black-20 | 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 | EMUBLACK-Black-13 | EMUBLACK-Black-26 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 2 | EMUBLACK-Black-27 | EMUBLACK-Black-13 | open (OL) | power ground must not touch +12 V supply | |
| 3 | EMUBLACK-Black-27 | EMUBLACK-Black-26 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | EMUBLACK-Black-29 | EMUBLACK-Black-13 | open (OL) | sensor ground must not touch +12 V supply | |
| 5 | EMUBLACK-Black-29 | EMUBLACK-Black-26 | open (OL) | sensor ground must not touch 5 V sensor reference |
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
EMUBLACK-Black
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition coil #5 | — | W28 | — | 0.5 | OEM-X-25 | — | — | — |
| 10 | Switch #1 In | — | — | — | — | — | — | — | — |
| 11 | RS232 TXD | — | — | — | — | — | — | — | — |
| 12 | CAN H | — | — | — | — | — | — | — | — |
| 13 | Battery +12V | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 14 | Ignition coil #4 | — | W27 | — | 0.5 | OEM-X-23 | — | — | — |
| 15 | EGT in #2 | — | — | — | — | — | — | — | — |
| 16 | Knock Sensor in #2 | — | W23 | — | 0.5 | OEM-X-69 | — | — | — |
| 17 | Analog In #3 | — | — | — | — | — | — | — | — |
| 18 | TPS In | — | W46 | — | 0.5 | OEM-X-73 | — | — | — |
| 19 | WBO Ip | — | — | — | — | — | — | — | — |
| 2 | EGT in #1 | — | — | — | — | — | — | — | — |
| 20 | VSS In | — | W50 | — | 0.5 | OEM-X-42 | — | — | — |
| 21 | Camsync In #1 | — | W21 | — | 0.5 | OEM-X-17 | — | — | — |
| 22 | WBO Rcal | — | — | — | — | — | — | — | — |
| 23 | Switch #2 In | — | — | — | — | — | — | — | — |
| 24 | RS232 RXD | — | — | — | — | — | — | — | — |
| 25 | CAN L | — | — | — | — | — | — | — | — |
| 26 | +5V supply | — | W19 | — | 0.5 | OEM-X-59 | — | — | — |
| 27 | Power Ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 28 | Ecu Ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 29 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Knock Sensor in #1 | — | W22 | — | 0.5 | OEM-X-70 | — | — | — |
| 30 | Analog In #4 | — | — | — | — | — | — | — | — |
| 31 | Analog In #1 | — | W45 | — | 0.5 | OEM-X-41 | — | — | — |
| 32 | IAT In | — | W48 | — | 0.5 | OEM-X-78 | — | — | — |
| 33 | WBO VGND | — | — | — | — | — | — | — | — |
| 34 | +5V supply | — | — | — | — | — | — | — | — |
| 35 | Analog In #5 | — | — | — | — | — | — | — | — |
| 36 | Switch #3 In | — | — | — | — | — | — | — | — |
| 37 | Analog In #6 | — | — | — | — | — | — | — | — |
| 38 | Sensor Ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 39 | Sensor Ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 4 | Analog In #2 | — | W47 | — | 0.5 | OEM-X-13 | — | — | — |
| 5 | CLT In | — | W49 | — | 0.5 | OEM-X-77 | — | — | — |
| 6 | WBO Vs | — | — | — | — | — | — | — | — |
| 7 | Camsync In #2 | — | — | — | — | — | — | — | — |
| 8 | Primary trigger | — | W20 | — | 0.5 | OEM-X-16 | — | — | — |
| 9 | Flex Fuel In | — | — | — | — | — | — | — | — |
EMUBLACK-Grey
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition coil #6 | — | W29 | — | 0.5 | OEM-X-24 | — | — | — |
| 10 | H-Bridge #1 Winding B | — | W44 | — | 0.5 | OEM-X-8 | — | — | — |
| 11 | H-Bridge #2 Winding B | — | — | — | — | — | — | — | — |
| 12 | AUX 5 | — | W42 | — | 0.5 | OEM-X-36 | — | — | — |
| 13 | AUX 2 / Injector #8 | — | W38 | — | 0.5 | OEM-X-27 | — | — | — |
| 14 | Injector #5 | — | W34 | — | 0.5 | OEM-X-3 | — | — | — |
| 15 | Injector #2 | — | W31 | — | 0.5 | OEM-X-32 | — | — | — |
| 16 | Ignition coil #2 | — | W25 | — | 0.5 | OEM-X-51 | — | — | — |
| 17 | Power Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Ignition +12V | — | W36 | — | 0.5 | OEM-X-56 | — | — | — |
| 19 | WBO Heater | — | W39 | — | 0.5 | OEM-X-38 | — | — | — |
| 2 | H-Bridge #1 Winding A | — | — | — | — | — | — | — | — |
| 20 | AUX 4 / Tacho | — | W41 | — | 0.5 | OEM-X-29 | — | — | — |
| 21 | AUX 1 / Injector #7 | — | W37 | — | 0.5 | OEM-X-1 | — | — | — |
| 22 | Injector #6 | — | W35 | — | 0.5 | OEM-X-4 | — | — | — |
| 23 | Injector #3 | — | W32 | — | 0.5 | OEM-X-31 | — | — | — |
| 24 | Power Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 3 | H-Bridge #2 Winding A | — | — | — | — | — | — | — | — |
| 4 | AUX 6 | — | W43 | — | 0.5 | OEM-X-7 | — | — | — |
| 5 | AUX 3 | — | W40 | — | 0.5 | OEM-X-2 | — | — | — |
| 6 | Injector #4 | — | W33 | — | 0.5 | OEM-X-5 | — | — | — |
| 7 | Injector #1 | — | W30 | — | 0.5 | OEM-X-33 | — | — | — |
| 8 | Ignition coil #1 | — | W24 | — | 0.5 | OEM-X-50 | — | — | — |
| 9 | Ignition coil #3 | — | W26 | — | 0.5 | OEM-X-52 | — | — | — |
OEM-X
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Fuel pump relay control | — | W37 | — | 0.5 | EMUBLACK-Grey-21 | — | — | — |
| 13 | O2 sensor signal | — | W47 | — | 0.5 | EMUBLACK-Black-4 | — | — | — |
| 15 | Ground | — | W3 | — | 0.85 | SP-GND-1 | — | — | — |
| 16 | Crank position sensor (+) | — | W20 | — | 0.5 | EMUBLACK-Black-8 | — | — | — |
| 17 | Camshaft position sensor (Hall) | — | W21 | — | 0.5 | EMUBLACK-Black-21 | — | — | — |
| 2 | Idle speed control valve (close winding) | — | W40 | — | 0.5 | EMUBLACK-Grey-5 | — | — | — |
| 23 | Ignition coil cylinder 4 | — | W27 | — | 0.5 | EMUBLACK-Black-14 | — | — | — |
| 24 | Ignition coil cylinder 6 | — | W29 | — | 0.5 | EMUBLACK-Grey-1 | — | — | — |
| 25 | Ignition coil cylinder 5 | — | W28 | — | 0.5 | EMUBLACK-Black-1 | — | — | — |
| 26 | Battery voltage (constant +12V) | — | — | — | — | — | — | — | — |
| 27 | Main relay control | — | W38 | — | 0.5 | EMUBLACK-Grey-13 | — | — | — |
| 28 | Ground (electronics + sensor shielding) | — | W11 | — | 0.5 | SP-0V-1 | — | — | — |
| 29 | Idle speed control valve (open winding) | — | W41 | — | 0.5 | EMUBLACK-Grey-20 | — | — | — |
| 3 | Injector cylinder 5 | — | W34 | — | 0.5 | EMUBLACK-Grey-14 | — | — | — |
| 31 | Injector cylinder 3 | — | W32 | — | 0.5 | EMUBLACK-Grey-23 | — | — | — |
| 32 | Injector cylinder 2 | — | W31 | — | 0.5 | EMUBLACK-Grey-15 | — | — | — |
| 33 | Injector cylinder 1 | — | W30 | — | 0.5 | EMUBLACK-Grey-7 | — | — | — |
| 34 | Ground (output stages) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 36 | Evap purge solenoid | — | W42 | — | 0.5 | EMUBLACK-Grey-12 | — | — | — |
| 38 | O2 sensor heater relay control | — | W39 | — | 0.5 | EMUBLACK-Grey-19 | — | — | — |
| 4 | Injector cylinder 6 | — | W35 | — | 0.5 | EMUBLACK-Grey-22 | — | — | — |
| 40 | O2 sensor signal ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 41 | Mass air flow (MAF) signal | — | W45 | — | 0.5 | EMUBLACK-Black-31 | — | — | — |
| 42 | Vehicle speed signal | — | W50 | — | 0.5 | EMUBLACK-Black-20 | — | — | — |
| 43 | Crank position sensor (-) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 44 | Sensor ground (IAT/ECT/TPS) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 45 | Shield ground | — | — | — | — | — | — | — | — |
| 47 | Tachometer output | — | — | — | — | — | — | — | — |
| 5 | Injector cylinder 4 | — | W33 | — | 0.5 | EMUBLACK-Grey-6 | — | — | — |
| 50 | Ignition coil cylinder 1 | — | W24 | — | 0.5 | EMUBLACK-Grey-8 | — | — | — |
| 51 | Ignition coil cylinder 2 | — | W25 | — | 0.5 | EMUBLACK-Grey-16 | — | — | — |
| 52 | Ignition coil cylinder 3 | — | W26 | — | 0.5 | EMUBLACK-Grey-9 | — | — | — |
| 54 | ECU power (+14V from main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 55 | Ground (ignition) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 56 | Ignition switch (terminal 15) | — | W36 | — | 0.5 | EMUBLACK-Grey-18 | — | — | — |
| 59 | +5V sensor supply | — | W19 | — | 0.5 | EMUBLACK-Black-26 | — | — | — |
| 6 | Ground (injector output stages) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 69 | Knock sensor cylinders 4-6 | — | W23 | — | 0.5 | EMUBLACK-Black-16 | — | — | — |
| 7 | VANOS intake camshaft solenoid | — | W43 | — | 0.5 | EMUBLACK-Grey-4 | — | — | — |
| 70 | Knock sensor cylinders 1-3 | — | W22 | — | 0.5 | EMUBLACK-Black-3 | — | — | — |
| 71 | Knock sensor ground/shield | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 73 | Throttle position (TPS) | — | W46 | — | 0.5 | EMUBLACK-Black-18 | — | — | — |
| 77 | Intake air temperature (IAT) | — | W49 | — | 0.5 | EMUBLACK-Black-5 | — | — | — |
| 78 | Engine coolant temperature (ECT) | — | W48 | — | 0.5 | EMUBLACK-Black-32 | — | — | — |
| 8 | Check engine light (MIL) | — | W44 | — | 0.5 | EMUBLACK-Grey-10 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W11 | — | 0.5 | OEM-X-28 | — | — | — |
| 1 | — | — | W12 | — | 0.5 | OEM-X-40 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-X-43 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-X-44 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-X-71 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | EMUBLACK-Black-29 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | EMUBLACK-Black-38 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | EMUBLACK-Black-39 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-X-54 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | EMUBLACK-Black-13 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W3 | — | 0.85 | OEM-X-15 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | OEM-X-34 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-X-55 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-X-6 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | EMUBLACK-Black-27 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | EMUBLACK-Black-28 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | EMUBLACK-Grey-17 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | EMUBLACK-Grey-24 | — | — | — |
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 | EMUBLACK-Grey-21 | AUX 1 / Injector #7 | low_side_out | corroborated | |
| OEM-X-13 | O2 sensor signal | lambda_nb_in | EMUBLACK-Black-4 | Analog In #2 | analog_in | corroborated | |
| OEM-X-15 | Ground | ground | EMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24 | Power Ground + Ecu Ground + Power Ground + Power Ground | ground | corroborated | |
| OEM-X-16 | Crank position sensor (+) | trigger_in | EMUBLACK-Black-8 | Primary trigger | trigger_in | corroborated | |
| OEM-X-17 | Camshaft position sensor (Hall) | trigger_in | EMUBLACK-Black-21 | Camsync In #1 | trigger_in | corroborated | |
| OEM-X-2 | Idle speed control valve (close winding) | low_side_out | EMUBLACK-Grey-5 | AUX 3 | low_side_out | corroborated | |
| OEM-X-23 | Ignition coil cylinder 4 | ignition_out | EMUBLACK-Black-14 | Ignition coil #4 | ignition_out | corroborated | |
| OEM-X-24 | Ignition coil cylinder 6 | ignition_out | EMUBLACK-Grey-1 | Ignition coil #6 | ignition_out | corroborated | |
| OEM-X-25 | Ignition coil cylinder 5 | ignition_out | EMUBLACK-Black-1 | Ignition coil #5 | ignition_out | corroborated | |
| OEM-X-26 | Battery voltage (constant +12V) | power_in | — | — | — | corroborated | |
| OEM-X-27 | Main relay control | low_side_out | EMUBLACK-Grey-13 | AUX 2 / Injector #8 | low_side_out | corroborated | |
| OEM-X-28 | Ground (electronics + sensor shielding) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-X-29 | Idle speed control valve (open winding) | low_side_out | EMUBLACK-Grey-20 | AUX 4 / Tacho | low_side_out | corroborated | |
| OEM-X-3 | Injector cylinder 5 | injector_out | EMUBLACK-Grey-14 | Injector #5 | injector_out | corroborated | |
| OEM-X-31 | Injector cylinder 3 | injector_out | EMUBLACK-Grey-23 | Injector #3 | injector_out | corroborated | |
| OEM-X-32 | Injector cylinder 2 | injector_out | EMUBLACK-Grey-15 | Injector #2 | injector_out | corroborated | |
| OEM-X-33 | Injector cylinder 1 | injector_out | EMUBLACK-Grey-7 | Injector #1 | injector_out | corroborated | |
| OEM-X-34 | Ground (output stages) | ground | EMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24 | Power Ground + Ecu Ground + Power Ground + Power Ground | ground | corroborated | |
| OEM-X-36 | Evap purge solenoid | low_side_out | EMUBLACK-Grey-12 | AUX 5 | low_side_out | corroborated | |
| OEM-X-38 | O2 sensor heater relay control | low_side_out | EMUBLACK-Grey-19 | WBO Heater | low_side_out | corroborated | |
| OEM-X-4 | Injector cylinder 6 | injector_out | EMUBLACK-Grey-22 | Injector #6 | injector_out | corroborated | |
| OEM-X-40 | O2 sensor signal ground | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-X-41 | Mass air flow (MAF) signal | analog_in | EMUBLACK-Black-31 | Analog In #1 | analog_in | corroborated | |
| OEM-X-42 | Vehicle speed signal | digital_in | EMUBLACK-Black-20 | VSS In | digital_in | corroborated | |
| OEM-X-43 | Crank position sensor (-) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-X-44 | Sensor ground (IAT/ECT/TPS) | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-X-45 | Shield ground | shield | — | — | — | corroborated | |
| OEM-X-47 | Tachometer output | tacho_out | — | — | — | corroborated | |
| OEM-X-5 | Injector cylinder 4 | injector_out | EMUBLACK-Grey-6 | Injector #4 | injector_out | corroborated | |
| OEM-X-50 | Ignition coil cylinder 1 | ignition_out | EMUBLACK-Grey-8 | Ignition coil #1 | ignition_out | corroborated | |
| OEM-X-51 | Ignition coil cylinder 2 | ignition_out | EMUBLACK-Grey-16 | Ignition coil #2 | ignition_out | corroborated | |
| OEM-X-52 | Ignition coil cylinder 3 | ignition_out | EMUBLACK-Grey-9 | Ignition coil #3 | ignition_out | corroborated | |
| OEM-X-54 | ECU power (+14V from main relay) | power_in | EMUBLACK-Black-13 | Battery +12V | power_in | corroborated | |
| OEM-X-55 | Ground (ignition) | ground | EMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24 | Power Ground + Ecu Ground + Power Ground + Power Ground | ground | corroborated | |
| OEM-X-56 | Ignition switch (terminal 15) | digital_in | EMUBLACK-Grey-18 | Ignition +12V | digital_in | corroborated | |
| OEM-X-59 | +5V sensor supply | vref | EMUBLACK-Black-26 | +5V supply | vref | corroborated | |
| OEM-X-6 | Ground (injector output stages) | ground | EMUBLACK-Black-27 + EMUBLACK-Black-28 + EMUBLACK-Grey-17 + EMUBLACK-Grey-24 | Power Ground + Ecu Ground + Power Ground + Power Ground | ground | corroborated | |
| OEM-X-69 | Knock sensor cylinders 4-6 | knock_in | EMUBLACK-Black-16 | Knock Sensor in #2 | knock_in | corroborated | |
| OEM-X-7 | VANOS intake camshaft solenoid | low_side_out | EMUBLACK-Grey-4 | AUX 6 | low_side_out | corroborated | |
| OEM-X-70 | Knock sensor cylinders 1-3 | knock_in | EMUBLACK-Black-3 | Knock Sensor in #1 | knock_in | corroborated | |
| OEM-X-71 | Knock sensor ground/shield | sensor_ground | EMUBLACK-Black-29 + EMUBLACK-Black-38 + EMUBLACK-Black-39 | Sensor Ground + Sensor Ground + Sensor Ground | sensor_ground | corroborated | |
| OEM-X-73 | Throttle position (TPS) | analog_in | EMUBLACK-Black-18 | TPS In | analog_in | corroborated | |
| OEM-X-77 | Intake air temperature (IAT) | temp_in | EMUBLACK-Black-5 | CLT In | temp_in | corroborated | |
| OEM-X-78 | Engine coolant temperature (ECT) | temp_in | EMUBLACK-Black-32 | IAT In | temp_in | corroborated | |
| OEM-X-8 | Check engine light (MIL) | low_side_out | EMUBLACK-Grey-10 | H-Bridge #1 Winding B | hbridge_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 | EMUBLACK-Black-13 | 0.85 | no route | Battery +12V | — | |
| W3 | OEM-X-15 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W4 | OEM-X-34 | SP-GND-1 | 0.85 | no route | Ground (output stages) | — | |
| W5 | OEM-X-55 | SP-GND-1 | 0.85 | no route | Ground (ignition) | — | |
| W6 | OEM-X-6 | SP-GND-1 | 0.85 | no route | Ground (injector output stages) | — | |
| W7 | SP-GND-1 | EMUBLACK-Black-27 | 0.85 | no route | Power Ground | — | |
| W8 | SP-GND-1 | EMUBLACK-Black-28 | 0.85 | no route | Ecu Ground | — | |
| W9 | SP-GND-1 | EMUBLACK-Grey-17 | 0.85 | no route | Power Ground | — | |
| W10 | SP-GND-1 | EMUBLACK-Grey-24 | 0.85 | no route | Power Ground | — | |
| W11 | OEM-X-28 | SP-0V-1 | 0.5 | no route | Ground (electronics + sensor shielding) | — | |
| W12 | OEM-X-40 | SP-0V-1 | 0.5 | no route | O2 sensor signal ground | — | |
| W13 | OEM-X-43 | SP-0V-1 | 0.5 | no route | Crank position sensor (-) | — | |
| W14 | OEM-X-44 | SP-0V-1 | 0.5 | no route | Sensor ground (IAT/ECT/TPS) | — | |
| W15 | OEM-X-71 | SP-0V-1 | 0.5 | no route | Knock sensor ground/shield | — | |
| W16 | SP-0V-1 | EMUBLACK-Black-29 | 0.5 | no route | Sensor Ground | — | |
| W17 | SP-0V-1 | EMUBLACK-Black-38 | 0.5 | no route | Sensor Ground | — | |
| W18 | SP-0V-1 | EMUBLACK-Black-39 | 0.5 | no route | Sensor Ground | — | |
| W19 | OEM-X-59 | EMUBLACK-Black-26 | 0.5 | no route | +5V sensor supply | — | |
| W20 | OEM-X-16 | EMUBLACK-Black-8 | 0.5 | no route | Crank position sensor (+) | — | |
| W21 | OEM-X-17 | EMUBLACK-Black-21 | 0.5 | no route | Camshaft position sensor (Hall) | — | |
| W22 | OEM-X-70 | EMUBLACK-Black-3 | 0.5 | no route | Knock sensor cylinders 1-3 | — | |
| W23 | OEM-X-69 | EMUBLACK-Black-16 | 0.5 | no route | Knock sensor cylinders 4-6 | — | |
| W24 | OEM-X-50 | EMUBLACK-Grey-8 | 0.5 | no route | Ignition coil cylinder 1 | — | |
| W25 | OEM-X-51 | EMUBLACK-Grey-16 | 0.5 | no route | Ignition coil cylinder 2 | — | |
| W26 | OEM-X-52 | EMUBLACK-Grey-9 | 0.5 | no route | Ignition coil cylinder 3 | — | |
| W27 | OEM-X-23 | EMUBLACK-Black-14 | 0.5 | no route | Ignition coil cylinder 4 | — | |
| W28 | OEM-X-25 | EMUBLACK-Black-1 | 0.5 | no route | Ignition coil cylinder 5 | — | |
| W29 | OEM-X-24 | EMUBLACK-Grey-1 | 0.5 | no route | Ignition coil cylinder 6 | — | |
| W30 | OEM-X-33 | EMUBLACK-Grey-7 | 0.5 | no route | Injector cylinder 1 | — | |
| W31 | OEM-X-32 | EMUBLACK-Grey-15 | 0.5 | no route | Injector cylinder 2 | — | |
| W32 | OEM-X-31 | EMUBLACK-Grey-23 | 0.5 | no route | Injector cylinder 3 | — | |
| W33 | OEM-X-5 | EMUBLACK-Grey-6 | 0.5 | no route | Injector cylinder 4 | — | |
| W34 | OEM-X-3 | EMUBLACK-Grey-14 | 0.5 | no route | Injector cylinder 5 | — | |
| W35 | OEM-X-4 | EMUBLACK-Grey-22 | 0.5 | no route | Injector cylinder 6 | — | |
| W36 | OEM-X-56 | EMUBLACK-Grey-18 | 0.5 | no route | Ignition switch (terminal 15) | — | |
| W37 | OEM-X-1 | EMUBLACK-Grey-21 | 0.5 | no route | Fuel pump relay control | — | |
| W38 | OEM-X-27 | EMUBLACK-Grey-13 | 0.5 | no route | Main relay control | — | |
| W39 | OEM-X-38 | EMUBLACK-Grey-19 | 0.5 | no route | O2 sensor heater relay control | — | |
| W40 | OEM-X-2 | EMUBLACK-Grey-5 | 0.5 | no route | Idle speed control valve (close winding) | — | |
| W41 | OEM-X-29 | EMUBLACK-Grey-20 | 0.5 | no route | Idle speed control valve (open winding) | — | |
| W42 | OEM-X-36 | EMUBLACK-Grey-12 | 0.5 | no route | Evap purge solenoid | — | |
| W43 | OEM-X-7 | EMUBLACK-Grey-4 | 0.5 | no route | VANOS intake camshaft solenoid | — | |
| W44 | OEM-X-8 | EMUBLACK-Grey-10 | 0.5 | no route | Check engine light (MIL) | — | |
| W45 | OEM-X-41 | EMUBLACK-Black-31 | 0.5 | no route | Mass air flow (MAF) signal | — | |
| W46 | OEM-X-73 | EMUBLACK-Black-18 | 0.5 | no route | Throttle position (TPS) | — | |
| W47 | OEM-X-13 | EMUBLACK-Black-4 | 0.5 | no route | O2 sensor signal | — | |
| W48 | OEM-X-78 | EMUBLACK-Black-32 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W49 | OEM-X-77 | EMUBLACK-Black-5 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W50 | OEM-X-42 | EMUBLACK-Black-20 | 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 |
|---|---|---|---|
| warn | NET_FAMILY | OEM-X-8 ↔ EMUBLACK-Grey-10 | OEM-X-8 "Check engine light (MIL)" [low_side_out] is wired to EMUBLACK-Grey-10 "H-Bridge #1 Winding B" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| info | UNMAPPED | OEM | 2 optional OEM pins are not mapped: OEM-X-45 Shield ground; OEM-X-47 Tachometer output |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-X-26 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
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 26: Battery voltage (constant +12V): ECUMASTER EMU Black has no battery-constant input; not needed - OEM-X 45: Shield ground: no shield pin on ECUMASTER EMU Black - OEM-X 47: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on ECUMASTER EMU Black
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | ECUMASTER EMU Black — pinout (Black 39-pin / Grey 24-pin) | https://www.ecumaster.com/wp/wp-content/uploads/2020/05/EMU_Black_pinout.pdf | archive | 2026-10-05 | 096b2b4df1bd |
| 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/ | — | — | — |