VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW → rusEFI Proteus (auto)
VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW — rusEFI — Proteus
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-12
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 | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 72 wires · 7 connectors · 0 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-T121-121 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-T121-21 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | PROTEUS-Black23-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-T121-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-T121-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | SP-GND-1 | PROTEUS-Black23-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-T121-108 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-T121-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-T121-34 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-T121-36 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-T121-90 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-T121-91 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-T121-72 | PROTEUS-White35-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-T121-73 | PROTEUS-White35-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-T121-83 | PROTEUS-White35-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-T121-98 | PROTEUS-White35-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-T121-99 | PROTEUS-White35-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-T121-82 | PROTEUS-Black23-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-T121-86 | PROTEUS-Black23-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-T121-106 | PROTEUS-White35-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-T121-107 | PROTEUS-White35-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-T121-102 | PROTEUS-Black35-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-T121-95 | PROTEUS-Black35-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-T121-103 | PROTEUS-Black35-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-T121-94 | PROTEUS-Black35-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-T121-96 | PROTEUS-Black35-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-T121-89 | PROTEUS-Black35-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-T121-97 | PROTEUS-Black35-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-T121-88 | PROTEUS-Black35-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-T121-118 | PROTEUS-Black23-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-T121-117 | PROTEUS-Black23-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-T121-3 | PROTEUS-Black23-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-T121-53 | PROTEUS-White35-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-T121-101 | PROTEUS-White35-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-T121-33 | PROTEUS-White35-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-T121-84 | PROTEUS-White35-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-T121-35 | PROTEUS-White35-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-T121-92 | PROTEUS-White35-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-T121-93 | PROTEUS-White35-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-T121-65 | PROTEUS-Black35-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-T121-66 | PROTEUS-Black35-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-T121-5 | PROTEUS-Black35-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-T121-63 | PROTEUS-Black35-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-T121-104 | PROTEUS-Black35-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-T121-105 | PROTEUS-Black35-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-T121-115 | PROTEUS-Black35-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-T121-47 | PROTEUS-Black35-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-T121-48 | PROTEUS-Black35-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-T121-64 | PROTEUS-Black35-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-T121-9 | PROTEUS-Black35-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-T121-68 | PROTEUS-White35-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-T121-69 | PROTEUS-White35-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-T121-85 | PROTEUS-White35-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-T121-54 | PROTEUS-Black23-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-T121-60 | PROTEUS-Black23-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W72 | OEM-T121-58 | PROTEUS-Black23-16 | 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 | PROTEUS-Black23-13 | PROTEUS-Black23-23 | open (OL) | sensor ground must not touch +12 V supply | |
| 2 | PROTEUS-Black23-13 | PROTEUS-White35-10 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 3 | PROTEUS-Black23-13 | PROTEUS-White35-21 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 4 | PROTEUS-Black23-13 | PROTEUS-White35-22 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 5 | PROTEUS-Black23-13 | PROTEUS-White35-32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 6 | PROTEUS-Black23-13 | PROTEUS-White35-33 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 7 | PROTEUS-Black23-14 | PROTEUS-Black23-23 | open (OL) | power ground must not touch +12 V supply | |
| 8 | PROTEUS-Black23-14 | PROTEUS-White35-10 | open (OL) | power ground must not touch 5 V sensor reference | |
| 9 | PROTEUS-Black23-14 | PROTEUS-White35-21 | open (OL) | power ground must not touch 5 V sensor reference | |
| 10 | PROTEUS-Black23-14 | PROTEUS-White35-22 | open (OL) | power ground must not touch 5 V sensor reference | |
| 11 | PROTEUS-Black23-14 | PROTEUS-White35-32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 12 | PROTEUS-Black23-14 | PROTEUS-White35-33 | open (OL) | power ground must not touch 5 V sensor reference | |
| 13 | PROTEUS-Black23-23 | PROTEUS-White35-10 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 14 | PROTEUS-Black23-23 | PROTEUS-White35-21 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 15 | PROTEUS-Black23-23 | PROTEUS-White35-22 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 16 | PROTEUS-Black23-23 | PROTEUS-White35-32 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 17 | PROTEUS-Black23-23 | PROTEUS-White35-33 | open (OL) | +12 V supply 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
OEM-T121
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 101 | Boost pressure sensor (G31) | — | W50 | — | 0.5 | PROTEUS-White35-24 | — | — | — |
| 102 | Ignition coil 1 (N127) | — | W38 | — | 0.5 | PROTEUS-Black35-35 | — | — | — |
| 103 | Ignition coil 3 (N158) | — | W40 | — | 0.5 | PROTEUS-Black35-22 | — | — | — |
| 104 | Boost control solenoid (N75) | — | W60 | — | 0.5 | PROTEUS-Black35-11 | — | — | — |
| 105 | Diverter valve (N249) | — | W61 | — | 0.5 | PROTEUS-Black35-12 | — | — | — |
| 106 | Knock sensor 1 (G61) | — | W36 | — | 0.5 | PROTEUS-White35-34 | — | — | — |
| 107 | Knock sensor 2 (G66) | — | W37 | — | 0.5 | PROTEUS-White35-35 | — | — | — |
| 108 | Sensor ground | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 115 | VVT camshaft adjustment valve (N205) | — | W62 | — | 0.5 | PROTEUS-Black35-23 | — | — | — |
| 117 | Throttle motor G186 (+) | — | W47 | — | 0.5 | PROTEUS-Black23-6 | — | — | — |
| 118 | Throttle motor G186 (−) | — | W46 | — | 0.5 | PROTEUS-Black23-7 | — | — | — |
| 121 | ECM + coil power (J271 relay feed) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | ECU ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | ECM power (J271 relay feed) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | MAF sensor supply (G70) | — | — | — | — | — | — | — | — |
| 29 | MAF sensor ground (G70) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Ignition switch +12V (term 15) | — | W48 | — | 0.5 | PROTEUS-Black23-18 | — | — | — |
| 33 | Accelerator pedal position 1 (G79) | — | W51 | — | 0.5 | PROTEUS-White35-14 | — | — | — |
| 34 | Accelerator pedal position 1 ground (G79) | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 35 | Accelerator pedal position 2 (G185) | — | W53 | — | 0.5 | PROTEUS-White35-15 | — | — | — |
| 36 | Accelerator pedal position 2 ground (G185) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 37 | Engine speed signal (tacho to cluster) | — | — | — | — | — | — | — | — |
| 43 | K-line diagnostics (OBD pin 7) | — | — | — | — | — | — | — | — |
| 47 | Check engine light (MIL) | — | W63 | — | 0.5 | PROTEUS-Black35-5 | — | — | — |
| 48 | EPC warning light | — | W64 | — | 0.5 | PROTEUS-Black35-6 | — | — | — |
| 5 | Wideband lambda heater (Z19) | — | W58 | — | 0.5 | PROTEUS-Black35-21 | — | — | — |
| 51 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 52 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 53 | MAF sensor signal (G70) | — | W49 | — | 0.5 | PROTEUS-White35-13 | — | — | — |
| 54 | Road speed signal (VSS) | — | W70 | — | 0.5 | PROTEUS-Black23-2 | — | — | — |
| 58 | CAN bus low | — | W72 | — | 0.5 | PROTEUS-Black23-16 | — | — | — |
| 60 | CAN bus high | — | W71 | — | 0.5 | PROTEUS-Black23-17 | — | — | — |
| 62 | Battery constant +12V (term 30) | — | — | — | — | — | — | — | — |
| 63 | Post-cat lambda heater (Z29) | — | W59 | — | 0.5 | PROTEUS-Black35-10 | — | — | — |
| 64 | EVAP canister valve (N80) | — | W65 | — | 0.5 | PROTEUS-Black35-7 | — | — | — |
| 65 | Fuel pump relay control | — | W56 | — | 0.5 | PROTEUS-Black35-20 | — | — | — |
| 66 | Secondary-air pump relay (J299) | — | W57 | — | 0.5 | PROTEUS-Black35-9 | — | — | — |
| 68 | Post-cat lambda signal (G130) | — | W67 | — | 0.5 | PROTEUS-White35-16 | — | — | — |
| 69 | Post-cat lambda signal (G130) | — | W68 | — | 0.5 | PROTEUS-White35-27 | — | — | — |
| 70 | Wideband lambda Nernst signal (G39) | — | — | — | — | — | — | — | — |
| 71 | Wideband lambda Nernst signal (G39) | — | — | — | — | — | — | — | — |
| 72 | Accelerator pedal position 1 5V supply (G79) | — | W28 | — | 0.5 | PROTEUS-White35-10 | — | — | — |
| 73 | Accelerator pedal position 2 5V supply (G185) | — | W29 | — | 0.5 | PROTEUS-White35-21 | — | — | — |
| 82 | Crank position sensor (G28) | — | W33 | — | 0.5 | PROTEUS-Black23-5 | — | — | — |
| 83 | Throttle position sensor 5V supply (G187/G188) | — | W30 | — | 0.5 | PROTEUS-White35-22 | — | — | — |
| 84 | Throttle position sensor 1 (G187) | — | W52 | — | 0.5 | PROTEUS-White35-25 | — | — | — |
| 85 | Intake air temperature (G42) | — | W69 | — | 0.5 | PROTEUS-White35-30 | — | — | — |
| 86 | Camshaft position sensor (G40) | — | W35 | — | 0.5 | PROTEUS-Black23-1 | — | — | — |
| 88 | Injector 4 (N33) | — | W45 | — | 0.5 | PROTEUS-Black35-16 | — | — | — |
| 89 | Injector 2 (N31) | — | W43 | — | 0.5 | PROTEUS-Black35-15 | — | — | — |
| 9 | Secondary-air injection valve (N112) | — | W66 | — | 0.5 | PROTEUS-Black35-19 | — | — | — |
| 90 | Crank position sensor ground (G28) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 91 | Throttle position sensor ground (G187/G188) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 92 | Throttle position sensor 2 (G188) | — | W54 | — | 0.5 | PROTEUS-White35-26 | — | — | — |
| 93 | Engine coolant temperature (G62) | — | W55 | — | 0.5 | PROTEUS-White35-20 | — | — | — |
| 94 | Ignition coil 4 (N163) | — | W41 | — | 0.5 | PROTEUS-Black35-33 | — | — | — |
| 95 | Ignition coil 2 (N128) | — | W39 | — | 0.5 | PROTEUS-Black35-34 | — | — | — |
| 96 | Injector 1 (N30) | — | W42 | — | 0.5 | PROTEUS-Black35-3 | — | — | — |
| 97 | Injector 3 (N32) | — | W44 | — | 0.5 | PROTEUS-Black35-4 | — | — | — |
| 98 | Cam + boost sensor 5V supply (G40/G31) | — | W31 | — | 0.5 | PROTEUS-White35-32 | — | — | — |
| 99 | Knock sensor 5V supply (G61/G66) | — | W32 | — | 0.5 | PROTEUS-White35-33 | — | — | — |
PROTEUS-Black23
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Digital 2 | — | W35 | — | 0.5 | OEM-T121-86 | — | — | — |
| 10 | Digital 1 | — | — | — | — | — | — | — | — |
| 11 | Digital 6 | — | — | — | — | — | — | — | — |
| 12 | VR 2 negative | — | — | — | — | — | — | — | — |
| 13 | VR 1 negative | — | W34 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | Power ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | ETB 2 positive | — | — | — | — | — | — | — | — |
| 16 | CAN 1 Low | — | W72 | — | 0.5 | OEM-T121-58 | — | — | — |
| 17 | CAN 1 High | — | W71 | — | 0.5 | OEM-T121-60 | — | — | — |
| 18 | Ignition switch in | — | W48 | — | 0.5 | OEM-T121-3 | — | — | — |
| 19 | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Digital 3 | — | W70 | — | 0.5 | OEM-T121-54 | — | — | — |
| 20 | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | CAN 2 Low | — | — | — | — | — | — | — | — |
| 22 | CAN 2 High | — | — | — | — | — | — | — | — |
| 23 | Main relay feed | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 3 | Digital 4 | — | — | — | — | — | — | — | — |
| 4 | VR 2 positive | — | — | — | — | — | — | — | — |
| 5 | VR 1 positive | — | W33 | — | 0.5 | OEM-T121-82 | — | — | — |
| 6 | ETB 1 negative | — | W47 | — | 0.5 | OEM-T121-117 | — | — | — |
| 7 | ETB 1 positive | — | W46 | — | 0.5 | OEM-T121-118 | — | — | — |
| 8 | ETB 2 negative | — | — | — | — | — | — | — | — |
| 9 | Digital 5 | — | — | — | — | — | — | — | — |
PROTEUS-Black35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Highside 2 | — | — | — | — | — | — | — | — |
| 10 | Lowside 13 | — | W59 | — | 0.5 | OEM-T121-63 | — | — | — |
| 11 | Lowside 14 | — | W60 | — | 0.5 | OEM-T121-104 | — | — | — |
| 12 | Lowside 15 | — | W61 | — | 0.5 | OEM-T121-105 | — | — | — |
| 13 | Highside 3 | — | — | — | — | — | — | — | — |
| 14 | Highside 4 | — | — | — | — | — | — | — | — |
| 15 | Injector 2 | — | W43 | — | 0.5 | OEM-T121-89 | — | — | — |
| 16 | Injector 4 | — | W45 | — | 0.5 | OEM-T121-88 | — | — | — |
| 17 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Power ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Injector 8 | — | W66 | — | 0.5 | OEM-T121-9 | — | — | — |
| 2 | Highside 1 | — | — | — | — | — | — | — | — |
| 20 | Lowside 10 | — | W56 | — | 0.5 | OEM-T121-65 | — | — | — |
| 21 | Lowside 12 | — | W58 | — | 0.5 | OEM-T121-5 | — | — | — |
| 22 | Ignition 3 | — | W40 | — | 0.5 | OEM-T121-103 | — | — | — |
| 23 | Lowside 16 | — | W62 | — | 0.5 | OEM-T121-115 | — | — | — |
| 24 | Power ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Ignition 12 | — | — | — | — | — | — | — | — |
| 26 | Ignition 11 | — | — | — | — | — | — | — | — |
| 27 | Ignition 10 | — | — | — | — | — | — | — | — |
| 28 | Ignition 9 | — | — | — | — | — | — | — | — |
| 29 | Ignition 8 | — | — | — | — | — | — | — | — |
| 3 | Injector 1 | — | W42 | — | 0.5 | OEM-T121-96 | — | — | — |
| 30 | Ignition 7 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 5 | — | — | — | — | — | — | — | — |
| 33 | Ignition 4 | — | W41 | — | 0.5 | OEM-T121-94 | — | — | — |
| 34 | Ignition 2 | — | W39 | — | 0.5 | OEM-T121-95 | — | — | — |
| 35 | Ignition 1 | — | W38 | — | 0.5 | OEM-T121-102 | — | — | — |
| 4 | Injector 3 | — | W44 | — | 0.5 | OEM-T121-97 | — | — | — |
| 5 | Injector 5 | — | W63 | — | 0.5 | OEM-T121-47 | — | — | — |
| 6 | Injector 6 | — | W64 | — | 0.5 | OEM-T121-48 | — | — | — |
| 7 | Injector 7 | — | W65 | — | 0.5 | OEM-T121-64 | — | — | — |
| 8 | Injector 9 | — | — | — | — | — | — | — | — |
| 9 | Lowside 11 | — | W57 | — | 0.5 | OEM-T121-66 | — | — | — |
PROTEUS-White35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor ground | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | 5V supply #2 | — | W28 | — | 0.5 | OEM-T121-72 | — | — | — |
| 11 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 12 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 13 | Analog Volt 1 | — | W49 | — | 0.5 | OEM-T121-53 | — | — | — |
| 14 | Analog Volt 3 | — | W51 | — | 0.5 | OEM-T121-33 | — | — | — |
| 15 | Analog Volt 5 | — | W53 | — | 0.5 | OEM-T121-35 | — | — | — |
| 16 | Analog Volt 7 | — | W67 | — | 0.5 | OEM-T121-68 | — | — | — |
| 17 | Analog Volt 9 | — | — | — | — | — | — | — | — |
| 18 | Analog Volt 11 | — | — | — | — | — | — | — | — |
| 19 | Thermistor 1 | — | — | — | — | — | — | — | — |
| 2 | Sensor ground | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | Coolant temp (CLT) | — | W55 | — | 0.5 | OEM-T121-93 | — | — | — |
| 21 | 5V supply #1 | — | W29 | — | 0.5 | OEM-T121-73 | — | — | — |
| 22 | 5V supply #2 | — | W30 | — | 0.5 | OEM-T121-83 | — | — | — |
| 23 | Sensor ground | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Analog Volt 2 | — | W50 | — | 0.5 | OEM-T121-101 | — | — | — |
| 25 | Analog Volt 4 | — | W52 | — | 0.5 | OEM-T121-84 | — | — | — |
| 26 | Analog Volt 6 | — | W54 | — | 0.5 | OEM-T121-92 | — | — | — |
| 27 | Analog Volt 8 | — | W68 | — | 0.5 | OEM-T121-69 | — | — | — |
| 28 | Analog Volt 10 | — | — | — | — | — | — | — | — |
| 29 | Sensor ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Sensor ground | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Intake air temp (IAT) | — | W69 | — | 0.5 | OEM-T121-85 | — | — | — |
| 31 | Thermistor 4 | — | — | — | — | — | — | — | — |
| 32 | 5V supply #1 | — | W31 | — | 0.5 | OEM-T121-98 | — | — | — |
| 33 | 5V supply #2 | — | W32 | — | 0.5 | OEM-T121-99 | — | — | — |
| 34 | Knock 1 | — | W36 | — | 0.5 | OEM-T121-106 | — | — | — |
| 35 | Knock 2 | — | W37 | — | 0.5 | OEM-T121-107 | — | — | — |
| 4 | Sensor ground | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor ground | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Sensor ground | — | W26 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Sensor ground | — | W27 | — | 0.5 | SP-0V-1 | — | — | — |
| 9 | 5V supply #1 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | OEM-T121-108 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-T121-29 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-T121-34 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-T121-36 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-T121-90 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-T121-91 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | PROTEUS-White35-1 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | PROTEUS-White35-2 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | PROTEUS-White35-23 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | PROTEUS-White35-29 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | PROTEUS-White35-3 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | PROTEUS-White35-4 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | PROTEUS-White35-5 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | PROTEUS-White35-6 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | PROTEUS-White35-7 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | PROTEUS-White35-8 | — | — | — |
| 1 | — | — | W34 | — | 0.5 | PROTEUS-Black23-13 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-T121-121 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-T121-21 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | PROTEUS-Black23-23 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-T121-1 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-T121-2 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | PROTEUS-Black23-14 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | PROTEUS-Black23-19 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | PROTEUS-Black23-20 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | PROTEUS-Black35-17 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | PROTEUS-Black35-18 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | PROTEUS-Black35-24 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-T121-1 | ECU ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | corroborated | |
| OEM-T121-101 | Boost pressure sensor (G31) | analog_in | PROTEUS-White35-24 | Analog Volt 2 | analog_in | corroborated | |
| OEM-T121-102 | Ignition coil 1 (N127) | ignition_out | PROTEUS-Black35-35 | Ignition 1 | ignition_out | corroborated | |
| OEM-T121-103 | Ignition coil 3 (N158) | ignition_out | PROTEUS-Black35-22 | Ignition 3 | ignition_out | corroborated | |
| OEM-T121-104 | Boost control solenoid (N75) | low_side_out | PROTEUS-Black35-11 | Lowside 14 | low_side_out | corroborated | |
| OEM-T121-105 | Diverter valve (N249) | low_side_out | PROTEUS-Black35-12 | Lowside 15 | low_side_out | corroborated | |
| OEM-T121-106 | Knock sensor 1 (G61) | knock_in | PROTEUS-White35-34 | Knock 1 | knock_in | corroborated | |
| OEM-T121-107 | Knock sensor 2 (G66) | knock_in | PROTEUS-White35-35 | Knock 2 | knock_in | corroborated | |
| OEM-T121-108 | Sensor ground | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-T121-115 | VVT camshaft adjustment valve (N205) | low_side_out | PROTEUS-Black35-23 | Lowside 16 | low_side_out | corroborated | |
| OEM-T121-117 | Throttle motor G186 (+) | hbridge_out | PROTEUS-Black23-6 | ETB 1 negative | hbridge_out | corroborated | |
| OEM-T121-118 | Throttle motor G186 (−) | hbridge_out | PROTEUS-Black23-7 | ETB 1 positive | hbridge_out | corroborated | |
| OEM-T121-121 | ECM + coil power (J271 relay feed) | power_in | PROTEUS-Black23-23 | Main relay feed | power_in | corroborated | |
| OEM-T121-2 | ECU ground | ground | PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground | corroborated | |
| OEM-T121-21 | ECM power (J271 relay feed) | power_in | PROTEUS-Black23-23 | Main relay feed | power_in | corroborated | |
| OEM-T121-27 | MAF sensor supply (G70) | power_in | — | — | — | corroborated | |
| OEM-T121-29 | MAF sensor ground (G70) | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-T121-3 | Ignition switch +12V (term 15) | digital_in | PROTEUS-Black23-18 | Ignition switch in | digital_in | corroborated | |
| OEM-T121-33 | Accelerator pedal position 1 (G79) | analog_in | PROTEUS-White35-14 | Analog Volt 3 | analog_in | corroborated | |
| OEM-T121-34 | Accelerator pedal position 1 ground (G79) | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-T121-35 | Accelerator pedal position 2 (G185) | analog_in | PROTEUS-White35-15 | Analog Volt 5 | analog_in | corroborated | |
| OEM-T121-36 | Accelerator pedal position 2 ground (G185) | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-T121-37 | Engine speed signal (tacho to cluster) | tacho_out | — | — | — | corroborated | |
| OEM-T121-43 | K-line diagnostics (OBD pin 7) | serial | — | — | — | corroborated | |
| OEM-T121-47 | Check engine light (MIL) | low_side_out | PROTEUS-Black35-5 | Injector 5 | injector_out | corroborated | |
| OEM-T121-48 | EPC warning light | low_side_out | PROTEUS-Black35-6 | Injector 6 | injector_out | corroborated | |
| OEM-T121-5 | Wideband lambda heater (Z19) | low_side_out | PROTEUS-Black35-21 | Lowside 12 | low_side_out | corroborated | |
| OEM-T121-51 | Wideband lambda pump (G39) | wb_ip | — | — | — | corroborated | |
| OEM-T121-52 | Wideband lambda pump (G39) | wb_ip | — | — | — | corroborated | |
| OEM-T121-53 | MAF sensor signal (G70) | analog_in | PROTEUS-White35-13 | Analog Volt 1 | analog_in | corroborated | |
| OEM-T121-54 | Road speed signal (VSS) | digital_in | PROTEUS-Black23-2 | Digital 3 | digital_in | corroborated | |
| OEM-T121-58 | CAN bus low | can_l | PROTEUS-Black23-16 | CAN 1 Low | can_l | corroborated | |
| OEM-T121-60 | CAN bus high | can_h | PROTEUS-Black23-17 | CAN 1 High | can_h | corroborated | |
| OEM-T121-62 | Battery constant +12V (term 30) | power_in | — | — | — | corroborated | |
| OEM-T121-63 | Post-cat lambda heater (Z29) | low_side_out | PROTEUS-Black35-10 | Lowside 13 | low_side_out | corroborated | |
| OEM-T121-64 | EVAP canister valve (N80) | low_side_out | PROTEUS-Black35-7 | Injector 7 | injector_out | corroborated | |
| OEM-T121-65 | Fuel pump relay control | low_side_out | PROTEUS-Black35-20 | Lowside 10 | low_side_out | corroborated | |
| OEM-T121-66 | Secondary-air pump relay (J299) | low_side_out | PROTEUS-Black35-9 | Lowside 11 | low_side_out | corroborated | |
| OEM-T121-68 | Post-cat lambda signal (G130) | lambda_nb_in | PROTEUS-White35-16 | Analog Volt 7 | analog_in | corroborated | |
| OEM-T121-69 | Post-cat lambda signal (G130) | lambda_nb_in | PROTEUS-White35-27 | Analog Volt 8 | analog_in | corroborated | |
| OEM-T121-70 | Wideband lambda Nernst signal (G39) | wb_vs | — | — | — | corroborated | |
| OEM-T121-71 | Wideband lambda Nernst signal (G39) | wb_vs | — | — | — | corroborated | |
| OEM-T121-72 | Accelerator pedal position 1 5V supply (G79) | vref | PROTEUS-White35-10 | 5V supply #2 | vref | corroborated | |
| OEM-T121-73 | Accelerator pedal position 2 5V supply (G185) | vref | PROTEUS-White35-21 | 5V supply #1 | vref | corroborated | |
| OEM-T121-82 | Crank position sensor (G28) | trigger_in | PROTEUS-Black23-5 | VR 1 positive | trigger_in | corroborated | |
| OEM-T121-83 | Throttle position sensor 5V supply (G187/G188) | vref | PROTEUS-White35-22 | 5V supply #2 | vref | corroborated | |
| OEM-T121-84 | Throttle position sensor 1 (G187) | analog_in | PROTEUS-White35-25 | Analog Volt 4 | analog_in | corroborated | |
| OEM-T121-85 | Intake air temperature (G42) | temp_in | PROTEUS-White35-30 | Intake air temp (IAT) | temp_in | corroborated | |
| OEM-T121-86 | Camshaft position sensor (G40) | trigger_in | PROTEUS-Black23-1 | Digital 2 | trigger_in | corroborated | |
| OEM-T121-88 | Injector 4 (N33) | injector_out | PROTEUS-Black35-16 | Injector 4 | injector_out | corroborated | |
| OEM-T121-89 | Injector 2 (N31) | injector_out | PROTEUS-Black35-15 | Injector 2 | injector_out | corroborated | |
| OEM-T121-9 | Secondary-air injection valve (N112) | low_side_out | PROTEUS-Black35-19 | Injector 8 | injector_out | corroborated | |
| OEM-T121-90 | Crank position sensor ground (G28) | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-T121-91 | Throttle position sensor ground (G187/G188) | sensor_ground | PROTEUS-Black23-13 + PROTEUS-White35-1 + PROTEUS-White35-2 + PROTEUS-White35-23 + PROTEUS-White35-29 + PROTEUS-White35-3 + PROTEUS-White35-4 + PROTEUS-White35-5 + PROTEUS-White35-6 + PROTEUS-White35-7 + PROTEUS-White35-8 | VR 1 negative + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground + Sensor ground | sensor_ground + trigger_in | corroborated | |
| OEM-T121-92 | Throttle position sensor 2 (G188) | analog_in | PROTEUS-White35-26 | Analog Volt 6 | analog_in | corroborated | |
| OEM-T121-93 | Engine coolant temperature (G62) | temp_in | PROTEUS-White35-20 | Coolant temp (CLT) | temp_in | corroborated | |
| OEM-T121-94 | Ignition coil 4 (N163) | ignition_out | PROTEUS-Black35-33 | Ignition 4 | ignition_out | corroborated | |
| OEM-T121-95 | Ignition coil 2 (N128) | ignition_out | PROTEUS-Black35-34 | Ignition 2 | ignition_out | corroborated | |
| OEM-T121-96 | Injector 1 (N30) | injector_out | PROTEUS-Black35-3 | Injector 1 | injector_out | corroborated | |
| OEM-T121-97 | Injector 3 (N32) | injector_out | PROTEUS-Black35-4 | Injector 3 | injector_out | corroborated | |
| OEM-T121-98 | Cam + boost sensor 5V supply (G40/G31) | vref | PROTEUS-White35-32 | 5V supply #1 | vref | corroborated | |
| OEM-T121-99 | Knock sensor 5V supply (G61/G66) | vref | PROTEUS-White35-33 | 5V supply #2 | vref | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-T121-121 | SP-14V-1 | 0.85 | no route | ECM + coil power (J271 relay feed) | — | |
| W2 | OEM-T121-21 | SP-14V-1 | 0.85 | no route | ECM power (J271 relay feed) | — | |
| W3 | SP-14V-1 | PROTEUS-Black23-23 | 0.85 | no route | Main relay feed | — | |
| W4 | OEM-T121-1 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W5 | OEM-T121-2 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W6 | SP-GND-1 | PROTEUS-Black23-14 | 0.85 | no route | Power ground | — | |
| W7 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | no route | Power ground | — | |
| W8 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | no route | Power ground | — | |
| W9 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | no route | Power ground | — | |
| W11 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | no route | Power ground | — | |
| W12 | OEM-T121-108 | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W13 | OEM-T121-29 | SP-0V-1 | 0.5 | no route | MAF sensor ground (G70) | — | |
| W14 | OEM-T121-34 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 1 ground (G79) | — | |
| W15 | OEM-T121-36 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 2 ground (G185) | — | |
| W16 | OEM-T121-90 | SP-0V-1 | 0.5 | no route | Crank position sensor ground (G28) | — | |
| W17 | OEM-T121-91 | SP-0V-1 | 0.5 | no route | Throttle position sensor ground (G187/G188) | — | |
| W18 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | no route | Sensor ground | — | |
| W19 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | no route | Sensor ground | — | |
| W20 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | no route | Sensor ground | — | |
| W21 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | no route | Sensor ground | — | |
| W22 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | no route | Sensor ground | — | |
| W23 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | no route | Sensor ground | — | |
| W24 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | no route | Sensor ground | — | |
| W25 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | no route | Sensor ground | — | |
| W26 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | no route | Sensor ground | — | |
| W27 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | no route | Sensor ground | — | |
| W28 | OEM-T121-72 | PROTEUS-White35-10 | 0.5 | no route | Accelerator pedal position 1 5V supply (G79) | — | |
| W29 | OEM-T121-73 | PROTEUS-White35-21 | 0.5 | no route | Accelerator pedal position 2 5V supply (G185) | — | |
| W30 | OEM-T121-83 | PROTEUS-White35-22 | 0.5 | no route | Throttle position sensor 5V supply (G187/G188) | — | |
| W31 | OEM-T121-98 | PROTEUS-White35-32 | 0.5 | no route | Cam + boost sensor 5V supply (G40/G31) | — | |
| W32 | OEM-T121-99 | PROTEUS-White35-33 | 0.5 | no route | Knock sensor 5V supply (G61/G66) | — | |
| W33 | OEM-T121-82 | PROTEUS-Black23-5 | 0.5 | no route | Crank position sensor (G28) | — | |
| W34 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | no route | VR 1 negative | — | |
| W35 | OEM-T121-86 | PROTEUS-Black23-1 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W36 | OEM-T121-106 | PROTEUS-White35-34 | 0.5 | no route | Knock sensor 1 (G61) | — | |
| W37 | OEM-T121-107 | PROTEUS-White35-35 | 0.5 | no route | Knock sensor 2 (G66) | — | |
| W38 | OEM-T121-102 | PROTEUS-Black35-35 | 0.5 | no route | Ignition coil 1 (N127) | — | |
| W39 | OEM-T121-95 | PROTEUS-Black35-34 | 0.5 | no route | Ignition coil 2 (N128) | — | |
| W40 | OEM-T121-103 | PROTEUS-Black35-22 | 0.5 | no route | Ignition coil 3 (N158) | — | |
| W41 | OEM-T121-94 | PROTEUS-Black35-33 | 0.5 | no route | Ignition coil 4 (N163) | — | |
| W42 | OEM-T121-96 | PROTEUS-Black35-3 | 0.5 | no route | Injector 1 (N30) | — | |
| W43 | OEM-T121-89 | PROTEUS-Black35-15 | 0.5 | no route | Injector 2 (N31) | — | |
| W44 | OEM-T121-97 | PROTEUS-Black35-4 | 0.5 | no route | Injector 3 (N32) | — | |
| W45 | OEM-T121-88 | PROTEUS-Black35-16 | 0.5 | no route | Injector 4 (N33) | — | |
| W46 | OEM-T121-118 | PROTEUS-Black23-7 | 0.5 | no route | Throttle motor G186 (−) | — | |
| W47 | OEM-T121-117 | PROTEUS-Black23-6 | 0.5 | no route | Throttle motor G186 (+) | — | |
| W48 | OEM-T121-3 | PROTEUS-Black23-18 | 0.5 | no route | Ignition switch +12V (term 15) | — | |
| W49 | OEM-T121-53 | PROTEUS-White35-13 | 0.5 | no route | MAF sensor signal (G70) | — | |
| W50 | OEM-T121-101 | PROTEUS-White35-24 | 0.5 | no route | Boost pressure sensor (G31) | — | |
| W51 | OEM-T121-33 | PROTEUS-White35-14 | 0.5 | no route | Accelerator pedal position 1 (G79) | — | |
| W52 | OEM-T121-84 | PROTEUS-White35-25 | 0.5 | no route | Throttle position sensor 1 (G187) | — | |
| W53 | OEM-T121-35 | PROTEUS-White35-15 | 0.5 | no route | Accelerator pedal position 2 (G185) | — | |
| W54 | OEM-T121-92 | PROTEUS-White35-26 | 0.5 | no route | Throttle position sensor 2 (G188) | — | |
| W55 | OEM-T121-93 | PROTEUS-White35-20 | 0.5 | no route | Engine coolant temperature (G62) | — | |
| W56 | OEM-T121-65 | PROTEUS-Black35-20 | 0.5 | no route | Fuel pump relay control | — | |
| W57 | OEM-T121-66 | PROTEUS-Black35-9 | 0.5 | no route | Secondary-air pump relay (J299) | — | |
| W58 | OEM-T121-5 | PROTEUS-Black35-21 | 0.5 | no route | Wideband lambda heater (Z19) | — | |
| W59 | OEM-T121-63 | PROTEUS-Black35-10 | 0.5 | no route | Post-cat lambda heater (Z29) | — | |
| W60 | OEM-T121-104 | PROTEUS-Black35-11 | 0.5 | no route | Boost control solenoid (N75) | — | |
| W61 | OEM-T121-105 | PROTEUS-Black35-12 | 0.5 | no route | Diverter valve (N249) | — | |
| W62 | OEM-T121-115 | PROTEUS-Black35-23 | 0.5 | no route | VVT camshaft adjustment valve (N205) | — | |
| W63 | OEM-T121-47 | PROTEUS-Black35-5 | 0.5 | no route | Check engine light (MIL) | — | |
| W64 | OEM-T121-48 | PROTEUS-Black35-6 | 0.5 | no route | EPC warning light | — | |
| W65 | OEM-T121-64 | PROTEUS-Black35-7 | 0.5 | no route | EVAP canister valve (N80) | — | |
| W66 | OEM-T121-9 | PROTEUS-Black35-19 | 0.5 | no route | Secondary-air injection valve (N112) | — | |
| W67 | OEM-T121-68 | PROTEUS-White35-16 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W68 | OEM-T121-69 | PROTEUS-White35-27 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W69 | OEM-T121-85 | PROTEUS-White35-30 | 0.5 | no route | Intake air temperature (G42) | — | |
| W70 | OEM-T121-54 | PROTEUS-Black23-2 | 0.5 | no route | Road speed signal (VSS) | — | |
| W71 | OEM-T121-60 | PROTEUS-Black23-17 | 0.5 | no route | CAN bus high | — | |
| W72 | OEM-T121-58 | PROTEUS-Black23-16 | 0.5 | no route | CAN bus low | — |
Bill of materials
| Category | Part number | Manufacturer | Description | Qty | Unit |
|---|
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 |
|---|---|---|---|
| warn | DBW_MOTOR_CURRENT | PROTEUS-Black23-6 | Cannot confirm Proteus can drive the throttle motor: neither the motor stall current (OEM-T121-117) nor the peak rating of PROTEUS-Black23-6 "ETB 1 negative" is known. |
| warn | DBW_MOTOR_CURRENT | PROTEUS-Black23-7 | Cannot confirm Proteus can drive the throttle motor: neither the motor stall current (OEM-T121-118) nor the peak rating of PROTEUS-Black23-7 "ETB 1 positive" is known. |
| info | NET_FAMILY | OEM-T121-47 ↔ PROTEUS-Black35-5 | OEM-T121-47 "Check engine light (MIL)" [low_side_out] is wired to PROTEUS-Black35-5 "Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-48 ↔ PROTEUS-Black35-6 | OEM-T121-48 "EPC warning light" [low_side_out] is wired to PROTEUS-Black35-6 "Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-64 ↔ PROTEUS-Black35-7 | OEM-T121-64 "EVAP canister valve (N80)" [low_side_out] is wired to PROTEUS-Black35-7 "Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-9 ↔ PROTEUS-Black35-19 | OEM-T121-9 "Secondary-air injection valve (N112)" [low_side_out] is wired to PROTEUS-Black35-19 "Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | PROTEUS-White35-7 ↔ PROTEUS-Black23-13 | PROTEUS-White35-7 "Sensor ground" [sensor_ground] is wired to PROTEUS-Black23-13 "VR 1 negative" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs. |
| info | UNMAPPED | OEM | 7 optional OEM pins are not mapped: OEM-T121-27 MAF sensor supply (G70); OEM-T121-37 Engine speed signal (tacho to cluster); OEM-T121-43 K-line diagnostics (OBD pin 7); OEM-T121-51 Wideband lambda pump (G39); OEM-T121-52 Wideband lambda pump (G39); OEM-T121-70 Wideband lambda Nernst signal (G39); OEM-T121-71 Wideband lambda Nernst signal (G39) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-T121-62 | 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 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-T121 62: Battery constant +12V (term 30): rusEFI Proteus has no battery-constant input; not needed - OEM-T121 37: Engine speed signal (tacho to cluster): no free tacho/frequency_out/low_side/ls_hs on rusEFI Proteus - OEM-T121 51: Wideband lambda pump (G39): no free wb_ip on rusEFI Proteus - OEM-T121 52: Wideband lambda pump (G39): no free wb_ip on rusEFI Proteus - OEM-T121 70: Wideband lambda Nernst signal (G39): no free wb_vs on rusEFI Proteus - OEM-T121 71: Wideband lambda Nernst signal (G39): no free wb_vs on rusEFI Proteus - OEM-T121 43: K-line diagnostics (OBD pin 7): no free k_line on rusEFI Proteus - OEM-T121 27: MAF sensor supply (G70): no rule for class sensor_supply_in; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | rusEFI Proteus — board connector definitions (Black35 / White35 / Black23) | https://github.com/rusefi/rusefi/tree/master/firmware/config/boards/proteus/connectors | archive | 2026-10-05 | 738a2ea934c0 |
| 3 | community_copy | NefMoto: ME7.5 ECU bench-flashing power/ground pins | http://nefmoto.com/wiki/index.php?title=ECU_Bench_Flashing | — | — | — |
| 3 | community_copy | vwressources: Bosch Motronic ME7.5 (AMK/ARY/AUQ/ARX/AUM) T121 pinout | https://www.vwressources.planethoster.world/me75_pinout.html | — | — | — |