BMW 3 Series E46 1998–2006 (M54) → Motorsport Electronics ME221 (auto)
BMW 3 Series E46 1998–2006 (M54) — Motorsport Electronics — ME221
⚠ 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 | 5: read the Findings page before cutting any wire |
| Size of the job | 66 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-X60001-8 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-X60001-9 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | ME221-C1-15 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | ME221-C1-64 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-X60001-4 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-X60001-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-X60001-6 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-X60005-5 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | ME221-C1-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | ME221-C1-61 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | ME221-C1-89 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | ME221-C1-90 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-X60002-20 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-X60002-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-X60002-22 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-X60002-24 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-X60003-15 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-X60003-17 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-X60003-18 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-X60003-20 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-X60003-21 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-X60003-23 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-X60003-25 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-X60003-28 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-X60004-12 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-X60004-7 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | SP-0V-1 | ME221-C1-52 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | SP-0V-1 | ME221-C1-84 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-X60003-7 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-X60004-14 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-X60004-9 | SP-5V1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | SP-5V1-1 | ME221-C1-45 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-X60003-8 | ME221-C1-81 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-X60003-2 | ME221-C1-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-X60003-5 | ME221-C1-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-X60003-29 | ME221-C1-53 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-X60005-3 | ME221-C1-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-X60005-2 | ME221-C1-31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-X60005-1 | ME221-C1-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-X60005-9 | ME221-C1-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-X60003-33 | ME221-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-X60003-34 | ME221-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-X60003-35 | ME221-C1-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-X60003-36 | ME221-C1-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-X60003-37 | ME221-C1-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-X60003-38 | ME221-C1-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-X60003-43 | ME221-C1-67 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-X60003-44 | ME221-C1-68 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-X60003-46 | ME221-C1-70 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-X60003-47 | ME221-C1-71 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-X60001-1 | ME221-C1-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-X60002-23 | ME221-C1-42 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-X60004-10 | ME221-C1-72 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-X60002-1 | ME221-C1-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-X60002-13 | ME221-C1-73 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-X60002-19 | ME221-C1-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-X60002-7 | ME221-C1-74 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-X60003-40 | ME221-C1-44 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-X60003-41 | ME221-C1-69 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-X60003-42 | ME221-C1-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-X60003-1 | ME221-C1-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-X60003-19 | ME221-C1-56 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-X60004-8 | ME221-C1-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-X60003-10 | ME221-C1-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-X60003-24 | ME221-C1-86 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-X60003-22 | ME221-C1-57 | 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 | ME221-C1-15 | ME221-C1-52 | open (OL) | +12 V supply must not touch sensor ground | |
| 2 | ME221-C1-10 | ME221-C1-15 | open (OL) | power ground must not touch +12 V supply | |
| 3 | ME221-C1-10 | ME221-C1-45 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | ME221-C1-15 | ME221-C1-45 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | ME221-C1-52 | ME221-C1-45 | open (OL) | sensor 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
ME221-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | COIL 4 | — | W40 | — | 0.5 | OEM-X60005-9 | — | — | — |
| 10 | GROUND CHASSIS | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | LOW SIDE 2 | — | W56 | — | 0.5 | OEM-X60002-19 | — | — | — |
| 14 | LSU +12V | — | — | — | — | — | — | — | — |
| 15 | IGN +12V | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | LSU HEATER -VE | — | W54 | — | 0.5 | OEM-X60002-1 | — | — | — |
| 17 | ANA VOLT 3 | — | W63 | — | 0.5 | OEM-X60004-8 | — | — | — |
| 18 | ANA VOLT 4 | — | W64 | — | 0.5 | OEM-X60003-10 | — | — | — |
| 19 | LSU UN | — | — | — | — | — | — | — | — |
| 2 | COIL 3 | — | W39 | — | 0.5 | OEM-X60005-1 | — | — | — |
| 20 | LSU VM | — | — | — | — | — | — | — | — |
| 21 | CAN 1 HIGH | — | — | — | — | — | — | — | — |
| 22 | CAM A VR+ | — | W34 | — | 0.5 | OEM-X60003-2 | — | — | — |
| 23 | CAM A VR- | — | W35 | — | 0.5 | OEM-X60003-5 | — | — | — |
| 24 | SERIAL 1 GROUND | — | — | — | — | — | — | — | — |
| 25 | SERIAL 1 TX | — | — | — | — | — | — | — | — |
| 26 | ANA VOLT 1 | — | W61 | — | 0.5 | OEM-X60003-1 | — | — | — |
| 3 | INJECTOR 4 | — | W44 | — | 0.5 | OEM-X60003-36 | — | — | — |
| 31 | COIL 2 | — | W38 | — | 0.5 | OEM-X60005-2 | — | — | — |
| 32 | COIL 1 | — | W37 | — | 0.5 | OEM-X60005-3 | — | — | — |
| 33 | INJECTOR 3 | — | W43 | — | 0.5 | OEM-X60003-35 | — | — | — |
| 35 | USB D+ | — | — | — | — | — | — | — | — |
| 36 | USB D- | — | — | — | — | — | — | — | — |
| 37 | LOW SIDE RELAY 11 | — | W51 | — | 0.5 | OEM-X60001-1 | — | — | — |
| 38 | USB VBUS | — | — | — | — | — | — | — | — |
| 39 | LOW SIDE 6 | — | W60 | — | 0.5 | OEM-X60003-42 | — | — | — |
| 4 | INJECTOR 2 | — | W42 | — | 0.5 | OEM-X60003-34 | — | — | — |
| 4 | INJECTOR 2 | — | W46 | — | 0.5 | OEM-X60003-38 | — | — | — |
| 41 | USB GROUND | — | — | — | — | — | — | — | — |
| 42 | LOW SIDE RELAY 12 | — | W52 | — | 0.5 | OEM-X60002-23 | — | — | — |
| 43 | LOW SIDE RELAY 14 | — | — | — | — | — | — | — | — |
| 44 | LOW SIDE 4 | — | W58 | — | 0.5 | OEM-X60003-40 | — | — | — |
| 45 | 5V REF | — | W32 | — | 0.5 | SP-5V1-1 | — | — | — |
| 46 | 5V REF | — | — | — | — | — | — | — | — |
| 49 | LSU IA | — | — | — | — | — | — | — | — |
| 50 | LSU IP | — | — | — | — | — | — | — | — |
| 51 | CAN 1 LOW | — | — | — | — | — | — | — | — |
| 52 | SENSORS GROUND | — | W27 | — | 0.5 | SP-0V-1 | — | — | — |
| 53 | KNOCK 1 SIGNAL | — | W36 | — | 0.5 | OEM-X60003-29 | — | — | — |
| 55 | SERIAL 1 RX | — | — | — | — | — | — | — | — |
| 56 | ANA VOLT 2 | — | W62 | — | 0.5 | OEM-X60003-19 | — | — | — |
| 57 | ANA TEMP 2 | — | W66 | — | 0.5 | OEM-X60003-22 | — | — | — |
| 6 | DIG_IN 1 | — | — | — | — | — | — | — | — |
| 61 | GROUND | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 63 | INJECTOR 1 | — | W41 | — | 0.5 | OEM-X60003-33 | — | — | — |
| 63 | INJECTOR 1 | — | W45 | — | 0.5 | OEM-X60003-37 | — | — | — |
| 64 | VBAT | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 67 | Stepper 1 / A1 | — | W47 | — | 0.5 | OEM-X60003-43 | — | — | — |
| 68 | Stepper 2 / A2 | — | W48 | — | 0.5 | OEM-X60003-44 | — | — | — |
| 69 | LOW SIDE 5 | — | W59 | — | 0.5 | OEM-X60003-41 | — | — | — |
| 7 | DIG_IN 2 | — | — | — | — | — | — | — | — |
| 70 | Stepper 3 / B1 | — | W49 | — | 0.5 | OEM-X60003-46 | — | — | — |
| 71 | Stepper 4 / B2 | — | W50 | — | 0.5 | OEM-X60003-47 | — | — | — |
| 72 | LOW SIDE RELAY 13 | — | W53 | — | 0.5 | OEM-X60004-10 | — | — | — |
| 73 | LOW SIDE 1 | — | W55 | — | 0.5 | OEM-X60002-13 | — | — | — |
| 74 | LOW SIDE 3 | — | W57 | — | 0.5 | OEM-X60002-7 | — | — | — |
| 76 | 5V REF | — | — | — | — | — | — | — | — |
| 79 | TACHOMETER | — | — | — | — | — | — | — | — |
| 80 | CRANK VR- | — | — | — | — | — | — | — | — |
| 81 | CRANK VR+ | — | W33 | — | 0.5 | OEM-X60003-8 | — | — | — |
| 84 | Sensor Ground | — | W28 | — | 0.5 | SP-0V-1 | — | — | — |
| 86 | ANA TEMP 1 | — | W65 | — | 0.5 | OEM-X60003-24 | — | — | — |
| 89 | GROUND | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 90 | GROUND | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
OEM-X60001
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Injector/unloader relay control (terminal 15) | — | W51 | — | 0.5 | ME221-C1-37 | — | — | — |
| 4 | Power ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 5 | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 6 | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 7 | Battery constant (terminal 30) | — | — | — | — | — | — | — | — |
| 8 | ECU main power (terminal 87 via main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 9 | Voltage supply (injector / fuse carrier) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
OEM-X60002
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | O2 sensor heater, bank 1 pre-cat | — | W54 | — | 0.5 | ME221-C1-16 | — | — | — |
| 13 | O2 sensor heater, bank 2 pre-cat | — | W55 | — | 0.5 | ME221-C1-73 | — | — | — |
| 14 | O2 sensor signal, bank 1 pre-cat | — | — | — | — | — | — | — | — |
| 15 | O2 sensor signal, bank 2 pre-cat | — | — | — | — | — | — | — | — |
| 16 | O2 sensor signal, bank 1 post-cat | — | — | — | — | — | — | — | — |
| 18 | O2 sensor signal, bank 2 post-cat | — | — | — | — | — | — | — | — |
| 19 | O2 sensor heater, bank 2 post-cat | — | W56 | — | 0.5 | ME221-C1-12 | — | — | — |
| 20 | O2 sensor ground, bank 1 pre-cat | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | O2 sensor ground, bank 2 pre-cat | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | O2 sensor ground, bank 1 post-cat | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 23 | Main relay control | — | W52 | — | 0.5 | ME221-C1-42 | — | — | — |
| 24 | O2 sensor ground, bank 2 post-cat | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | O2 sensor heater, bank 1 post-cat | — | W57 | — | 0.5 | ME221-C1-74 | — | — | — |
OEM-X60003
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Mass air flow (MAF) signal | — | W61 | — | 0.5 | ME221-C1-26 | — | — | — |
| 10 | Throttle position sensor 2 | — | W64 | — | 0.5 | ME221-C1-18 | — | — | — |
| 15 | Exhaust camshaft ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | MAF ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 18 | Intake camshaft ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Throttle position sensor 1 | — | W62 | — | 0.5 | ME221-C1-56 | — | — | — |
| 2 | Exhaust camshaft position | — | W34 | — | 0.5 | ME221-C1-22 | — | — | — |
| 20 | Throttle ground | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Crankshaft ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 22 | Intake air temperature (IAT) | — | W66 | — | 0.5 | ME221-C1-57 | — | — | — |
| 23 | IAT ground | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Engine coolant temperature (ECT) | — | W65 | — | 0.5 | ME221-C1-86 | — | — | — |
| 25 | ECT ground | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 27 | Engine oil temperature | — | — | — | — | — | — | — | — |
| 28 | Oil temperature ground | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 29 | Knock sensor, cylinders 1-3 (A) | — | W36 | — | 0.5 | ME221-C1-53 | — | — | — |
| 30 | Knock sensor, cylinders 1-3 (B) | — | — | — | — | — | — | — | — |
| 31 | Knock sensor, cylinders 4-6 (A) | — | — | — | — | — | — | — | — |
| 32 | Knock sensor, cylinders 4-6 (B) | — | — | — | — | — | — | — | — |
| 33 | Injector cylinder 1 | — | W41 | — | 0.5 | ME221-C1-63 | — | — | — |
| 34 | Injector cylinder 2 | — | W42 | — | 0.5 | ME221-C1-4 | — | — | — |
| 35 | Injector cylinder 3 | — | W43 | — | 0.5 | ME221-C1-33 | — | — | — |
| 36 | Injector cylinder 4 | — | W44 | — | 0.5 | ME221-C1-3 | — | — | — |
| 37 | Injector cylinder 5 | — | W45 | — | 0.5 | ME221-C1-63 | — | — | — |
| 38 | Injector cylinder 6 | — | W46 | — | 0.5 | ME221-C1-4 | — | — | — |
| 40 | VANOS intake solenoid | — | W58 | — | 0.5 | ME221-C1-44 | — | — | — |
| 41 | VANOS exhaust solenoid | — | W59 | — | 0.5 | ME221-C1-69 | — | — | — |
| 42 | Evap purge valve | — | W60 | — | 0.5 | ME221-C1-39 | — | — | — |
| 43 | Throttle motor drive 1 (H-bridge) | — | W47 | — | 0.5 | ME221-C1-67 | — | — | — |
| 44 | Throttle motor drive 2 (H-bridge) | — | W48 | — | 0.5 | ME221-C1-68 | — | — | — |
| 45 | Map-controlled thermostat | — | — | — | — | — | — | — | — |
| 46 | Idle speed control, close | — | W49 | — | 0.5 | ME221-C1-70 | — | — | — |
| 47 | Idle speed control, open | — | W50 | — | 0.5 | ME221-C1-71 | — | — | — |
| 48 | Knock sensor shield | — | — | — | — | — | — | — | — |
| 49 | DISA intake flap | — | — | — | — | — | — | — | — |
| 5 | Intake camshaft position | — | W35 | — | 0.5 | ME221-C1-23 | — | — | — |
| 7 | Throttle body +5V supply | — | W29 | — | 0.5 | SP-5V1-1 | — | — | — |
| 8 | Crankshaft position | — | W33 | — | 0.5 | ME221-C1-81 | — | — | — |
OEM-X60004
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Fuel pump relay control | — | W53 | — | 0.5 | ME221-C1-72 | — | — | — |
| 12 | Pedal ground 2 | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 13 | Pedal position signal 2 | — | — | — | — | — | — | — | — |
| 14 | Pedal +5V supply 2 | — | W30 | — | 0.5 | SP-5V1-1 | — | — | — |
| 7 | Pedal ground 1 | — | W26 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Pedal position signal 1 | — | W63 | — | 0.5 | ME221-C1-17 | — | — | — |
| 9 | Pedal +5V supply 1 | — | W31 | — | 0.5 | SP-5V1-1 | — | — | — |
OEM-X60005
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ignition coil 3 | — | W39 | — | 0.5 | ME221-C1-2 | — | — | — |
| 2 | Ignition coil 2 | — | W38 | — | 0.5 | ME221-C1-31 | — | — | — |
| 3 | Ignition coil 1 | — | W37 | — | 0.5 | ME221-C1-32 | — | — | — |
| 5 | Ignition ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 7 | Ignition coil 6 | — | — | — | — | — | — | — | — |
| 8 | Ignition coil 5 | — | — | — | — | — | — | — | — |
| 9 | Ignition coil 4 | — | W40 | — | 0.5 | ME221-C1-1 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-X60002-20 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-X60002-21 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-X60002-22 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-X60002-24 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-X60003-15 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-X60003-17 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-X60003-18 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-X60003-20 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | OEM-X60003-21 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | OEM-X60003-23 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | OEM-X60003-25 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | OEM-X60003-28 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | OEM-X60004-12 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | OEM-X60004-7 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | ME221-C1-52 | — | — | — |
| 1 | — | — | W28 | — | 0.5 | ME221-C1-84 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-X60001-8 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-X60001-9 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | ME221-C1-15 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | ME221-C1-64 | — | — | — |
SP-5V1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W29 | — | 0.5 | OEM-X60003-7 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | OEM-X60004-14 | — | — | — |
| 1 | — | — | W31 | — | 0.5 | OEM-X60004-9 | — | — | — |
| 1 | — | — | W32 | — | 0.5 | ME221-C1-45 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-X60001-4 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-X60001-5 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-X60001-6 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-X60005-5 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | ME221-C1-10 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | ME221-C1-61 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | ME221-C1-89 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | ME221-C1-90 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-X60001-1 | Injector/unloader relay control (terminal 15) | low_side_out | ME221-C1-37 | LOW SIDE RELAY 11 | low_side_out | corroborated | |
| OEM-X60001-4 | Power ground | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | corroborated | |
| OEM-X60001-5 | Power ground | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | corroborated | |
| OEM-X60001-6 | Power ground | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + 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 | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | corroborated | |
| OEM-X60001-9 | Voltage supply (injector / fuse carrier) | power_in | ME221-C1-15 + ME221-C1-64 | IGN +12V + VBAT | power_in | corroborated | |
| OEM-X60002-1 | O2 sensor heater, bank 1 pre-cat | low_side_out | ME221-C1-16 | LSU HEATER -VE | low_side_out | corroborated | |
| OEM-X60002-13 | O2 sensor heater, bank 2 pre-cat | low_side_out | ME221-C1-73 | LOW SIDE 1 | low_side_out | corroborated | |
| OEM-X60002-14 | O2 sensor signal, bank 1 pre-cat | lambda_nb_in | — | — | — | corroborated | |
| OEM-X60002-15 | O2 sensor signal, bank 2 pre-cat | lambda_nb_in | — | — | — | corroborated | |
| OEM-X60002-16 | O2 sensor signal, bank 1 post-cat | lambda_nb_in | — | — | — | corroborated | |
| OEM-X60002-18 | O2 sensor signal, bank 2 post-cat | lambda_nb_in | — | — | — | corroborated | |
| OEM-X60002-19 | O2 sensor heater, bank 2 post-cat | low_side_out | ME221-C1-12 | LOW SIDE 2 | low_side_out | corroborated | |
| OEM-X60002-20 | O2 sensor ground, bank 1 pre-cat | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60002-21 | O2 sensor ground, bank 2 pre-cat | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60002-22 | O2 sensor ground, bank 1 post-cat | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60002-23 | Main relay control | low_side_out | ME221-C1-42 | LOW SIDE RELAY 12 | low_side_out | corroborated | |
| OEM-X60002-24 | O2 sensor ground, bank 2 post-cat | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60002-7 | O2 sensor heater, bank 1 post-cat | low_side_out | ME221-C1-74 | LOW SIDE 3 | low_side_out | corroborated | |
| OEM-X60003-1 | Mass air flow (MAF) signal | analog_in | ME221-C1-26 | ANA VOLT 1 | analog_in | corroborated | |
| OEM-X60003-10 | Throttle position sensor 2 | analog_in | ME221-C1-18 | ANA VOLT 4 | analog_in | corroborated | |
| OEM-X60003-15 | Exhaust camshaft ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-17 | MAF ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-18 | Intake camshaft ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-19 | Throttle position sensor 1 | analog_in | ME221-C1-56 | ANA VOLT 2 | analog_in | corroborated | |
| OEM-X60003-2 | Exhaust camshaft position | trigger_in | ME221-C1-22 | CAM A VR+ | trigger_in | corroborated | |
| OEM-X60003-20 | Throttle ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-21 | Crankshaft ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-22 | Intake air temperature (IAT) | temp_in | ME221-C1-57 | ANA TEMP 2 | temp_in | corroborated | |
| OEM-X60003-23 | IAT ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-24 | Engine coolant temperature (ECT) | temp_in | ME221-C1-86 | ANA TEMP 1 | temp_in | corroborated | |
| OEM-X60003-25 | ECT ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-27 | Engine oil temperature | temp_in | — | — | — | corroborated | |
| OEM-X60003-28 | Oil temperature ground | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60003-29 | Knock sensor, cylinders 1-3 (A) | knock_in | ME221-C1-53 | KNOCK 1 SIGNAL | knock_in | corroborated | |
| OEM-X60003-30 | Knock sensor, cylinders 1-3 (B) | knock_in | — | — | — | corroborated | |
| OEM-X60003-31 | Knock sensor, cylinders 4-6 (A) | knock_in | — | — | — | corroborated | |
| OEM-X60003-32 | Knock sensor, cylinders 4-6 (B) | knock_in | — | — | — | corroborated | |
| OEM-X60003-33 | Injector cylinder 1 | injector_out | ME221-C1-63 | INJECTOR 1 | injector_out | corroborated | |
| OEM-X60003-34 | Injector cylinder 2 | injector_out | ME221-C1-4 | INJECTOR 2 | injector_out | corroborated | |
| OEM-X60003-35 | Injector cylinder 3 | injector_out | ME221-C1-33 | INJECTOR 3 | injector_out | corroborated | |
| OEM-X60003-36 | Injector cylinder 4 | injector_out | ME221-C1-3 | INJECTOR 4 | injector_out | corroborated | |
| OEM-X60003-37 | Injector cylinder 5 | injector_out | ME221-C1-63 | INJECTOR 1 | injector_out | corroborated | |
| OEM-X60003-38 | Injector cylinder 6 | injector_out | ME221-C1-4 | INJECTOR 2 | injector_out | corroborated | |
| OEM-X60003-40 | VANOS intake solenoid | low_side_out | ME221-C1-44 | LOW SIDE 4 | low_side_out | corroborated | |
| OEM-X60003-41 | VANOS exhaust solenoid | low_side_out | ME221-C1-69 | LOW SIDE 5 | low_side_out | corroborated | |
| OEM-X60003-42 | Evap purge valve | low_side_out | ME221-C1-39 | LOW SIDE 6 | low_side_out | corroborated | |
| OEM-X60003-43 | Throttle motor drive 1 (H-bridge) | hbridge_out | ME221-C1-67 | Stepper 1 / A1 | hbridge_out | corroborated | |
| OEM-X60003-44 | Throttle motor drive 2 (H-bridge) | hbridge_out | ME221-C1-68 | Stepper 2 / A2 | hbridge_out | corroborated | |
| OEM-X60003-45 | Map-controlled thermostat | low_side_out | — | — | — | corroborated | |
| OEM-X60003-46 | Idle speed control, close | hbridge_out | ME221-C1-70 | Stepper 3 / B1 | hbridge_out | corroborated | |
| OEM-X60003-47 | Idle speed control, open | hbridge_out | ME221-C1-71 | Stepper 4 / B2 | hbridge_out | corroborated | |
| OEM-X60003-48 | Knock sensor shield | shield | — | — | — | corroborated | |
| OEM-X60003-49 | DISA intake flap | low_side_out | — | — | — | corroborated | |
| OEM-X60003-5 | Intake camshaft position | trigger_in | ME221-C1-23 | CAM A VR- | trigger_in | corroborated | |
| OEM-X60003-7 | Throttle body +5V supply | vref | ME221-C1-45 | 5V REF | vref | corroborated | |
| OEM-X60003-8 | Crankshaft position | trigger_in | ME221-C1-81 | CRANK VR+ | trigger_in | corroborated | |
| OEM-X60004-10 | Fuel pump relay control | low_side_out | ME221-C1-72 | LOW SIDE RELAY 13 | low_side_out | corroborated | |
| OEM-X60004-12 | Pedal ground 2 | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60004-13 | Pedal position signal 2 | analog_in | — | — | — | corroborated | |
| OEM-X60004-14 | Pedal +5V supply 2 | vref | ME221-C1-45 | 5V REF | vref | corroborated | |
| OEM-X60004-7 | Pedal ground 1 | sensor_ground | ME221-C1-52 + ME221-C1-84 | SENSORS GROUND + Sensor Ground | sensor_ground | corroborated | |
| OEM-X60004-8 | Pedal position signal 1 | analog_in | ME221-C1-17 | ANA VOLT 3 | analog_in | corroborated | |
| OEM-X60004-9 | Pedal +5V supply 1 | vref | ME221-C1-45 | 5V REF | vref | corroborated | |
| OEM-X60005-1 | Ignition coil 3 | ignition_out | ME221-C1-2 | COIL 3 | ignition_out | corroborated | |
| OEM-X60005-2 | Ignition coil 2 | ignition_out | ME221-C1-31 | COIL 2 | ignition_out | corroborated | |
| OEM-X60005-3 | Ignition coil 1 | ignition_out | ME221-C1-32 | COIL 1 | ignition_out | corroborated | |
| OEM-X60005-5 | Ignition ground | ground | ME221-C1-10 + ME221-C1-61 + ME221-C1-89 + ME221-C1-90 | GROUND CHASSIS + GROUND + GROUND + GROUND | ground | corroborated | |
| OEM-X60005-7 | Ignition coil 6 | ignition_out | — | — | — | corroborated | |
| OEM-X60005-8 | Ignition coil 5 | ignition_out | — | — | — | corroborated | |
| OEM-X60005-9 | Ignition coil 4 | ignition_out | ME221-C1-1 | COIL 4 | ignition_out | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-X60001-8 | SP-14V-1 | 0.85 | no route | ECU main power (terminal 87 via main relay) | — | |
| W2 | OEM-X60001-9 | SP-14V-1 | 0.85 | no route | Voltage supply (injector / fuse carrier) | — | |
| W3 | SP-14V-1 | ME221-C1-15 | 0.85 | no route | IGN +12V | — | |
| W4 | SP-14V-1 | ME221-C1-64 | 0.85 | no route | VBAT | — | |
| W5 | OEM-X60001-4 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W6 | OEM-X60001-5 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W7 | OEM-X60001-6 | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-X60005-5 | SP-GND-1 | 0.85 | no route | Ignition ground | — | |
| W9 | SP-GND-1 | ME221-C1-10 | 0.85 | no route | GROUND CHASSIS | — | |
| W10 | SP-GND-1 | ME221-C1-61 | 0.85 | no route | GROUND | — | |
| W11 | SP-GND-1 | ME221-C1-89 | 0.85 | no route | GROUND | — | |
| W12 | SP-GND-1 | ME221-C1-90 | 0.85 | no route | GROUND | — | |
| W13 | OEM-X60002-20 | SP-0V-1 | 0.5 | no route | O2 sensor ground, bank 1 pre-cat | — | |
| W14 | OEM-X60002-21 | SP-0V-1 | 0.5 | no route | O2 sensor ground, bank 2 pre-cat | — | |
| W15 | OEM-X60002-22 | SP-0V-1 | 0.5 | no route | O2 sensor ground, bank 1 post-cat | — | |
| W16 | OEM-X60002-24 | SP-0V-1 | 0.5 | no route | O2 sensor ground, bank 2 post-cat | — | |
| W17 | OEM-X60003-15 | SP-0V-1 | 0.5 | no route | Exhaust camshaft ground | — | |
| W18 | OEM-X60003-17 | SP-0V-1 | 0.5 | no route | MAF ground | — | |
| W19 | OEM-X60003-18 | SP-0V-1 | 0.5 | no route | Intake camshaft ground | — | |
| W20 | OEM-X60003-20 | SP-0V-1 | 0.5 | no route | Throttle ground | — | |
| W21 | OEM-X60003-21 | SP-0V-1 | 0.5 | no route | Crankshaft ground | — | |
| W22 | OEM-X60003-23 | SP-0V-1 | 0.5 | no route | IAT ground | — | |
| W23 | OEM-X60003-25 | SP-0V-1 | 0.5 | no route | ECT ground | — | |
| W24 | OEM-X60003-28 | SP-0V-1 | 0.5 | no route | Oil temperature ground | — | |
| W25 | OEM-X60004-12 | SP-0V-1 | 0.5 | no route | Pedal ground 2 | — | |
| W26 | OEM-X60004-7 | SP-0V-1 | 0.5 | no route | Pedal ground 1 | — | |
| W27 | SP-0V-1 | ME221-C1-52 | 0.5 | no route | SENSORS GROUND | — | |
| W28 | SP-0V-1 | ME221-C1-84 | 0.5 | no route | Sensor Ground | — | |
| W29 | OEM-X60003-7 | SP-5V1-1 | 0.5 | no route | Throttle body +5V supply | — | |
| W30 | OEM-X60004-14 | SP-5V1-1 | 0.5 | no route | Pedal +5V supply 2 | — | |
| W31 | OEM-X60004-9 | SP-5V1-1 | 0.5 | no route | Pedal +5V supply 1 | — | |
| W32 | SP-5V1-1 | ME221-C1-45 | 0.5 | no route | 5V REF | — | |
| W33 | OEM-X60003-8 | ME221-C1-81 | 0.5 | no route | Crankshaft position | — | |
| W34 | OEM-X60003-2 | ME221-C1-22 | 0.5 | no route | Exhaust camshaft position | — | |
| W35 | OEM-X60003-5 | ME221-C1-23 | 0.5 | no route | Intake camshaft position | — | |
| W36 | OEM-X60003-29 | ME221-C1-53 | 0.5 | no route | Knock sensor, cylinders 1-3 (A) | — | |
| W37 | OEM-X60005-3 | ME221-C1-32 | 0.5 | no route | Ignition coil 1 | — | |
| W38 | OEM-X60005-2 | ME221-C1-31 | 0.5 | no route | Ignition coil 2 | — | |
| W39 | OEM-X60005-1 | ME221-C1-2 | 0.5 | no route | Ignition coil 3 | — | |
| W40 | OEM-X60005-9 | ME221-C1-1 | 0.5 | no route | Ignition coil 4 | — | |
| W41 | OEM-X60003-33 | ME221-C1-63 | 0.5 | no route | Injector cylinder 1 | — | |
| W42 | OEM-X60003-34 | ME221-C1-4 | 0.5 | no route | Injector cylinder 2 | — | |
| W43 | OEM-X60003-35 | ME221-C1-33 | 0.5 | no route | Injector cylinder 3 | — | |
| W44 | OEM-X60003-36 | ME221-C1-3 | 0.5 | no route | Injector cylinder 4 | — | |
| W45 | OEM-X60003-37 | ME221-C1-63 | 0.5 | no route | Injector cylinder 5 | — | |
| W46 | OEM-X60003-38 | ME221-C1-4 | 0.5 | no route | Injector cylinder 6 | — | |
| W47 | OEM-X60003-43 | ME221-C1-67 | 0.5 | no route | Throttle motor drive 1 (H-bridge) | — | |
| W48 | OEM-X60003-44 | ME221-C1-68 | 0.5 | no route | Throttle motor drive 2 (H-bridge) | — | |
| W49 | OEM-X60003-46 | ME221-C1-70 | 0.5 | no route | Idle speed control, close | — | |
| W50 | OEM-X60003-47 | ME221-C1-71 | 0.5 | no route | Idle speed control, open | — | |
| W51 | OEM-X60001-1 | ME221-C1-37 | 0.5 | no route | Injector/unloader relay control (terminal 15) | — | |
| W52 | OEM-X60002-23 | ME221-C1-42 | 0.5 | no route | Main relay control | — | |
| W53 | OEM-X60004-10 | ME221-C1-72 | 0.5 | no route | Fuel pump relay control | — | |
| W54 | OEM-X60002-1 | ME221-C1-16 | 0.5 | no route | O2 sensor heater, bank 1 pre-cat | — | |
| W55 | OEM-X60002-13 | ME221-C1-73 | 0.5 | no route | O2 sensor heater, bank 2 pre-cat | — | |
| W56 | OEM-X60002-19 | ME221-C1-12 | 0.5 | no route | O2 sensor heater, bank 2 post-cat | — | |
| W57 | OEM-X60002-7 | ME221-C1-74 | 0.5 | no route | O2 sensor heater, bank 1 post-cat | — | |
| W58 | OEM-X60003-40 | ME221-C1-44 | 0.5 | no route | VANOS intake solenoid | — | |
| W59 | OEM-X60003-41 | ME221-C1-69 | 0.5 | no route | VANOS exhaust solenoid | — | |
| W60 | OEM-X60003-42 | ME221-C1-39 | 0.5 | no route | Evap purge valve | — | |
| W61 | OEM-X60003-1 | ME221-C1-26 | 0.5 | no route | Mass air flow (MAF) signal | — | |
| W62 | OEM-X60003-19 | ME221-C1-56 | 0.5 | no route | Throttle position sensor 1 | — | |
| W63 | OEM-X60004-8 | ME221-C1-17 | 0.5 | no route | Pedal position signal 1 | — | |
| W64 | OEM-X60003-10 | ME221-C1-18 | 0.5 | no route | Throttle position sensor 2 | — | |
| W65 | OEM-X60003-24 | ME221-C1-86 | 0.5 | no route | Engine coolant temperature (ECT) | — | |
| W66 | OEM-X60003-22 | ME221-C1-57 | 0.5 | no route | Intake air temperature (IAT) | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|---|---|---|---|---|
| connector | BMW-E46-MS43-CONN | BMW | E46 DME (MS43) 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 (8)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | NET_MERGED | ME221-C1-4 + OEM-X60003-34 + OEM-X60003-38 | 2 different OEM functions share one net: OEM-X60003-34 Injector cylinder 2; OEM-X60003-38 Injector cylinder 6 |
| error | NET_MERGED | ME221-C1-63 + OEM-X60003-33 + OEM-X60003-37 | 2 different OEM functions share one net: OEM-X60003-33 Injector cylinder 1; OEM-X60003-37 Injector cylinder 5 |
| error | REQUIRED_UNMAPPED | OEM-X60004-13 | Required OEM function "Pedal position signal 2" (analog_in) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X60005-7 | Required OEM function "Ignition coil 6" (ignition_out) is not connected to the new ECU. |
| error | REQUIRED_UNMAPPED | OEM-X60005-8 | Required OEM function "Ignition coil 5" (ignition_out) is not connected to the new ECU. |
| warn | DBW_MOTOR_CURRENT | ME221-C1-67 | Cannot confirm ME221 can drive the throttle motor: ME221-C1-67 "Stepper 1 / A1" is rated 0.5 A peak, but the motor stall current at OEM-X60003-43 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | DBW_MOTOR_CURRENT | ME221-C1-68 | Cannot confirm ME221 can drive the throttle motor: ME221-C1-68 "Stepper 2 / A2" is rated 0.5 A peak, but the motor stall current at OEM-X60003-44 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| info | UNMAPPED | OEM | 11 optional OEM pins are not mapped: OEM-X60002-14 O2 sensor signal, bank 1 pre-cat; OEM-X60002-15 O2 sensor signal, bank 2 pre-cat; OEM-X60002-16 O2 sensor signal, bank 1 post-cat; OEM-X60002-18 O2 sensor signal, bank 2 post-cat; OEM-X60003-27 Engine oil temperature; OEM-X60003-30 Knock sensor, cylinders 1-3 (B); OEM-X60003-31 Knock sensor, cylinders 4-6 (A); OEM-X60003-32 Knock sensor, cylinders 4-6 (B); OEM-X60003-45 Map-controlled thermostat; OEM-X60003-48 Knock sensor shield; OEM-X60003-49 DISA intake flap |
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: - No drive-by-wire; needs a cable-throttle conversion or an external DBW controller - Needs CAN (E46 K-bus/CAN); not documented for this ECU - Trigger pattern for BMW M54 not found in the ECU's docs (Trigger-pattern list is only inside MEITE software, not published online) - Only 4 ignition outputs for 6 cylinders: wasted spark (pair coils per firing order) - Only 4 injector outputs for 6 injectors: batch / semi-sequential injection - 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 8: Ignition coil 5: no free ignition output on Motorsport Electronics ME221 - OEM-X60005 7: Ignition coil 6: no free ignition output on Motorsport Electronics ME221 - OEM-X60004 13: Pedal position signal 2: no free tps/analog_0_5 on Motorsport Electronics ME221 Not wired: - OEM-X60001 7: Battery constant (terminal 30): Motorsport Electronics ME221 has no battery-constant input; not needed - OEM-X60003 30: Knock sensor, cylinders 1-3 (B): no free knock input on Motorsport Electronics ME221 - OEM-X60003 31: Knock sensor, cylinders 4-6 (A): no free knock input on Motorsport Electronics ME221 - OEM-X60003 32: Knock sensor, cylinders 4-6 (B): no free knock input on Motorsport Electronics ME221 - OEM-X60003 48: Knock sensor shield: no shield pin on Motorsport Electronics ME221 - OEM-X60003 45: Map-controlled thermostat: no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-X60003 49: DISA intake flap: no free low_side/ls_hs/injector/hbridge on Motorsport Electronics ME221 - OEM-X60002 14: O2 sensor signal, bank 1 pre-cat: no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-X60002 15: O2 sensor signal, bank 2 pre-cat: no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-X60002 16: O2 sensor signal, bank 1 post-cat: no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-X60002 18: O2 sensor signal, bank 2 post-cat: no free o2_narrowband/analog_0_5 on Motorsport Electronics ME221 - OEM-X60003 27: Engine oil temperature: no free thermistor/analog_0_5 on Motorsport Electronics ME221
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Motorsport Electronics GEN2 ME221/ME360/ME442 wire-in pinout | https://motorsport-electronics.co.uk/onlinehelp/html/ME442ME360ME221GEN2Wire-InPinout.html | — | — | — |
| 2 | community_copy | ms4x.net: Siemens MS43 Pinout | https://www.ms4x.net/index.php?title=Siemens_MS43_Pinout | — | — | — |
| 2 | community_copy | rusefi wiki: 2002 BMW 325 / 2004 BMW 330Ci E46 DME pinout (M54/MS43) | https://github.com/rusefi/rusefi/wiki/2002-BMW-325-and-2004-BMW-330Ci-E46-DME-pinout | — | — | — |