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 · 2026-10-23
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 | 83 wires · 10 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 | OEM-T121-3 | MAIN-R-COIL+ | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 1.25 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | MAIN-R-OUT | PROTEUS-Black23-23 | 1.25 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-T121-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-T121-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | PROTEUS-Black23-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-T121-108 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-T121-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-T121-34 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-T121-36 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-T121-90 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-T121-91 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-T121-72 | PROTEUS-White35-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-T121-73 | PROTEUS-White35-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-T121-83 | PROTEUS-White35-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-T121-98 | PROTEUS-White35-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-T121-99 | PROTEUS-White35-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-T121-82 | PROTEUS-Black23-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-T121-86 | PROTEUS-Black23-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-T121-106 | PROTEUS-White35-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-T121-107 | PROTEUS-White35-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-T121-102 | PROTEUS-Black35-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-T121-95 | PROTEUS-Black35-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-T121-103 | PROTEUS-Black35-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-T121-94 | PROTEUS-Black35-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-T121-96 | PROTEUS-Black35-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-T121-89 | PROTEUS-Black35-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-T121-97 | PROTEUS-Black35-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-T121-88 | PROTEUS-Black35-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-T121-118 | PROTEUS-Black23-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-T121-117 | PROTEUS-Black23-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-T121-53 | PROTEUS-White35-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-T121-101 | PROTEUS-White35-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-T121-33 | PROTEUS-White35-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-T121-84 | PROTEUS-White35-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-T121-35 | PROTEUS-White35-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-T121-92 | PROTEUS-White35-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-T121-93 | PROTEUS-White35-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-T121-65 | PROTEUS-Black35-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-T121-66 | PROTEUS-Black35-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-T121-5 | PROTEUS-Black35-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-T121-63 | PROTEUS-Black35-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-T121-25 | PROTEUS-Black35-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-T121-80 | PROTEUS-Black35-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-T121-104 | PROTEUS-Black35-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-T121-105 | PROTEUS-Black35-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-T121-115 | PROTEUS-Black35-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-T121-22 | PROTEUS-Black35-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-T121-47 | PROTEUS-Black35-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W69 | OEM-T121-48 | PROTEUS-Black35-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W70 | OEM-T121-68 | PROTEUS-White35-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W71 | OEM-T121-69 | PROTEUS-White35-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W72 | OEM-T121-85 | PROTEUS-White35-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W73 | OEM-T121-54 | PROTEUS-Black23-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W74 | OEM-T121-28 | PROTEUS-Black23-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W75 | OEM-T121-38 | PROTEUS-Black23-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W76 | OEM-T121-39 | PROTEUS-Black23-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W77 | OEM-T121-40 | PROTEUS-Black23-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W78 | OEM-T121-41 | PROTEUS-White35-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W79 | OEM-T121-49 | PROTEUS-White35-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W80 | OEM-T121-55 | PROTEUS-White35-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W81 | OEM-T121-60 | PROTEUS-Black23-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W82 | OEM-T121-58 | PROTEUS-Black23-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W83 | NEW-KEYON-1 | PROTEUS-Black23-18 | 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 | MAIN-R-COIL+ | PROTEUS-White35-10 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 2 | MAIN-R-COIL+ | PROTEUS-White35-21 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 3 | MAIN-R-COIL+ | PROTEUS-White35-22 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 4 | MAIN-R-COIL+ | PROTEUS-White35-32 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 5 | MAIN-R-COIL+ | PROTEUS-White35-33 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 6 | MAIN-R-COIL- | MAIN-R-COIL+ | open (OL) | power ground must not touch +12 V supply | |
| 7 | MAIN-R-COIL- | MAIN-R-OUT | open (OL) | power ground must not touch +12 V supply | |
| 8 | MAIN-R-COIL- | NEW-BATT-1 | open (OL) | power ground must not touch +12 V supply | |
| 9 | MAIN-R-COIL- | OEM-T121-121 | open (OL) | power ground must not touch +12 V supply | |
| 10 | MAIN-R-COIL- | PROTEUS-White35-10 | open (OL) | power ground must not touch 5 V sensor reference | |
| 11 | MAIN-R-COIL- | PROTEUS-White35-21 | open (OL) | power ground must not touch 5 V sensor reference | |
| 12 | MAIN-R-COIL- | PROTEUS-White35-22 | open (OL) | power ground must not touch 5 V sensor reference | |
| 13 | MAIN-R-COIL- | PROTEUS-White35-32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 14 | MAIN-R-COIL- | PROTEUS-White35-33 | open (OL) | power ground must not touch 5 V sensor reference | |
| 15 | OEM-T121-121 | PROTEUS-White35-10 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 16 | OEM-T121-121 | PROTEUS-White35-21 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 17 | OEM-T121-121 | PROTEUS-White35-22 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 18 | OEM-T121-121 | PROTEUS-White35-32 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 19 | OEM-T121-121 | PROTEUS-White35-33 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 20 | PROTEUS-Black23-13 | MAIN-R-COIL+ | open (OL) | sensor ground must not touch +12 V supply | |
| 21 | PROTEUS-Black23-13 | MAIN-R-OUT | open (OL) | sensor ground must not touch +12 V supply | |
| 22 | PROTEUS-Black23-13 | NEW-BATT-1 | open (OL) | sensor ground must not touch +12 V supply | |
| 23 | PROTEUS-Black23-13 | OEM-T121-121 | open (OL) | sensor ground must not touch +12 V supply | |
| 24 | PROTEUS-Black23-13 | PROTEUS-White35-10 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 25 | PROTEUS-Black23-13 | PROTEUS-White35-21 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 26 | PROTEUS-Black23-13 | PROTEUS-White35-22 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 27 | PROTEUS-Black23-13 | PROTEUS-White35-32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 28 | PROTEUS-Black23-13 | PROTEUS-White35-33 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 29 | PROTEUS-White35-10 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 30 | PROTEUS-White35-10 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 31 | PROTEUS-White35-21 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 32 | PROTEUS-White35-21 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 33 | PROTEUS-White35-22 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 34 | PROTEUS-White35-22 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 35 | PROTEUS-White35-32 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 36 | PROTEUS-White35-32 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 37 | PROTEUS-White35-33 | MAIN-R-OUT | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 38 | PROTEUS-White35-33 | NEW-BATT-1 | open (OL) | 5 V sensor reference must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
MAIN-R
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| COIL+ | Relay coil positive (ignition-switched +12V) | — | W3 | — | 0.5 | OEM-T121-3 | — | — | — |
| COIL- | Relay coil negative (ECU low-side driver) | — | W5 | — | 0.5 | SP-GND-1 | — | — | — |
| IN | Relay contact input (battery + via main fuse) | — | W4 | — | 1.25 | NEW-BATT-1 | — | — | — |
| OUT | Relay contact output (switched +12V bus) | — | W6 | — | 1.25 | PROTEUS-Black23-23 | — | — | — |
NEW-BATT
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 1.25 | MAIN-R-IN | — | — | — |
NEW-KEYON
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W83 | — | 0.5 | PROTEUS-Black23-18 | — | — | — |
OEM-T121
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 101 | Boost pressure sensor (G31) | — | W52 | — | 0.5 | PROTEUS-White35-24 | — | — | — |
| 102 | Ignition coil 1 (N127) | — | W41 | — | 0.5 | PROTEUS-Black35-35 | — | — | — |
| 103 | Ignition coil 3 (N158) | — | W43 | — | 0.5 | PROTEUS-Black35-22 | — | — | — |
| 104 | Boost control solenoid (N75) | — | W64 | — | 0.5 | PROTEUS-Black35-23 | — | — | — |
| 105 | Diverter valve (N249) | — | W65 | — | 0.5 | PROTEUS-Black35-5 | — | — | — |
| 106 | Knock sensor 1 (G61) | — | W39 | — | 0.5 | PROTEUS-White35-34 | — | — | — |
| 107 | Knock sensor 2 (G66) | — | W40 | — | 0.5 | PROTEUS-White35-35 | — | — | — |
| 108 | Sensor ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 115 | VVT camshaft adjustment valve (N205) | — | W66 | — | 0.5 | PROTEUS-Black35-6 | — | — | — |
| 117 | Throttle motor G186 (+) | — | W50 | — | 0.5 | PROTEUS-Black23-6 | — | — | — |
| 118 | Throttle motor G186 (−) | — | W49 | — | 0.5 | PROTEUS-Black23-7 | — | — | — |
| 121 | ECM + coil power (J271 relay feed) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | ECU ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | ECM power (J271 relay feed) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 22 | Brake vacuum pump (V192) | — | W67 | — | 0.5 | PROTEUS-Black35-7 | — | — | — |
| 25 | V144 Evaporative diagnostic pump (Pin 2) | — | W62 | — | 0.5 | PROTEUS-Black35-11 | — | — | — |
| 27 | MAF sensor supply (G70) | — | — | — | — | — | — | — | — |
| 28 | Alternator DF terminal (charge warning) | — | W74 | — | 0.5 | PROTEUS-Black23-10 | — | — | — |
| 29 | MAF sensor ground (G70) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Ignition switch +12V (term 15) | — | W3 | — | 0.5 | MAIN-R-COIL+ | — | — | — |
| 33 | Accelerator pedal position 1 (G79) | — | W53 | — | 0.5 | PROTEUS-White35-14 | — | — | — |
| 34 | Accelerator pedal position 1 ground (G79) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 35 | Accelerator pedal position 2 (G185) | — | W55 | — | 0.5 | PROTEUS-White35-15 | — | — | — |
| 36 | Accelerator pedal position 2 ground (G185) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 37 | Engine speed signal (tacho to cluster) | — | — | — | — | — | — | — | — |
| 38 | Cruise control switch (E45) | — | W75 | — | 0.5 | PROTEUS-Black23-3 | — | — | — |
| 39 | Clutch pedal switch (F36) | — | W76 | — | 0.5 | PROTEUS-Black23-9 | — | — | — |
| 40 | A/C signal | — | W77 | — | 0.5 | PROTEUS-Black23-11 | — | — | — |
| 41 | A/C signal | — | W78 | — | 0.5 | PROTEUS-White35-17 | — | — | — |
| 43 | K-line diagnostics (OBD pin 7) | — | — | — | — | — | — | — | — |
| 47 | Check engine light (MIL) | — | W68 | — | 0.5 | PROTEUS-Black35-19 | — | — | — |
| 48 | EPC warning light | — | W69 | — | 0.5 | PROTEUS-Black35-8 | — | — | — |
| 49 | Power steering pressure switch (F88) | — | W79 | — | 0.5 | PROTEUS-White35-28 | — | — | — |
| 5 | Wideband lambda heater (Z19) | — | W60 | — | 0.5 | PROTEUS-Black35-21 | — | — | — |
| 50 | Power steering pressure switch supply (F88) | — | — | — | — | — | — | — | — |
| 51 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 52 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 53 | MAF sensor signal (G70) | — | W51 | — | 0.5 | PROTEUS-White35-13 | — | — | — |
| 54 | Road speed signal (VSS) | — | W73 | — | 0.5 | PROTEUS-Black23-2 | — | — | — |
| 55 | Brake pedal switch (F) | — | W80 | — | 0.5 | PROTEUS-White35-18 | — | — | — |
| 56 | Brake pedal switch (F) | — | — | — | — | — | — | — | — |
| 57 | Cruise control switch (E45) | — | — | — | — | — | — | — | — |
| 58 | CAN bus low | — | W82 | — | 0.5 | PROTEUS-Black23-16 | — | — | — |
| 60 | CAN bus high | — | W81 | — | 0.5 | PROTEUS-Black23-17 | — | — | — |
| 62 | Battery constant +12V (term 30) | — | — | — | — | — | — | — | — |
| 63 | Post-cat lambda heater (Z29) | — | W61 | — | 0.5 | PROTEUS-Black35-10 | — | — | — |
| 64 | EVAP canister valve (N80) | — | — | — | — | — | — | — | — |
| 65 | Fuel pump relay control | — | W58 | — | 0.5 | PROTEUS-Black35-20 | — | — | — |
| 66 | Secondary-air pump relay (J299) | — | W59 | — | 0.5 | PROTEUS-Black35-9 | — | — | — |
| 67 | Crash sensor signal | — | — | — | — | — | — | — | — |
| 68 | Post-cat lambda signal (G130) | — | W70 | — | 0.5 | PROTEUS-White35-16 | — | — | — |
| 69 | Post-cat lambda signal (G130) | — | W71 | — | 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) | — | W31 | — | 0.5 | PROTEUS-White35-10 | — | — | — |
| 73 | Accelerator pedal position 2 5V supply (G185) | — | W32 | — | 0.5 | PROTEUS-White35-21 | — | — | — |
| 75 | Cruise control switch (E45) | — | — | — | — | — | — | — | — |
| 76 | Cruise control switch (E45) | — | — | — | — | — | — | — | — |
| 80 | V144 Evap Diagnostic Pump (Pin 1) | — | W63 | — | 0.5 | PROTEUS-Black35-12 | — | — | — |
| 82 | Crank position sensor (G28) | — | W36 | — | 0.5 | PROTEUS-Black23-5 | — | — | — |
| 83 | Throttle position sensor 5V supply (G187/G188) | — | W33 | — | 0.5 | PROTEUS-White35-22 | — | — | — |
| 84 | Throttle position sensor 1 (G187) | — | W54 | — | 0.5 | PROTEUS-White35-25 | — | — | — |
| 85 | Intake air temperature (G42) | — | W72 | — | 0.5 | PROTEUS-White35-30 | — | — | — |
| 86 | Camshaft position sensor (G40) | — | W38 | — | 0.5 | PROTEUS-Black23-1 | — | — | — |
| 88 | Injector 4 (N33) | — | W48 | — | 0.5 | PROTEUS-Black35-16 | — | — | — |
| 89 | Injector 2 (N31) | — | W46 | — | 0.5 | PROTEUS-Black35-15 | — | — | — |
| 9 | Secondary-air injection valve (N112) | — | — | — | — | — | — | — | — |
| 90 | Crank position sensor ground (G28) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 91 | Throttle position sensor ground (G187/G188) | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 92 | Throttle position sensor 2 (G188) | — | W56 | — | 0.5 | PROTEUS-White35-26 | — | — | — |
| 93 | Engine coolant temperature (G62) | — | W57 | — | 0.5 | PROTEUS-White35-20 | — | — | — |
| 94 | Ignition coil 4 (N163) | — | W44 | — | 0.5 | PROTEUS-Black35-33 | — | — | — |
| 95 | Ignition coil 2 (N128) | — | W42 | — | 0.5 | PROTEUS-Black35-34 | — | — | — |
| 96 | Injector 1 (N30) | — | W45 | — | 0.5 | PROTEUS-Black35-3 | — | — | — |
| 97 | Injector 3 (N32) | — | W47 | — | 0.5 | PROTEUS-Black35-4 | — | — | — |
| 98 | Cam + boost sensor 5V supply (G40/G31) | — | W34 | — | 0.5 | PROTEUS-White35-32 | — | — | — |
| 99 | Knock sensor 5V supply (G61/G66) | — | W35 | — | 0.5 | PROTEUS-White35-33 | — | — | — |
PROTEUS-Black23
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Digital 2 | — | W38 | — | 0.5 | OEM-T121-86 | — | — | — |
| 10 | Digital 1 | — | W74 | — | 0.5 | OEM-T121-28 | — | — | — |
| 11 | Digital 6 | — | W77 | — | 0.5 | OEM-T121-40 | — | — | — |
| 12 | VR 2 negative | — | — | — | — | — | — | — | — |
| 13 | VR 1 negative | — | W37 | — | 0.5 | SP-0V-1 | — | — | — |
| 14 | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | ETB 2 positive | — | — | — | — | — | — | — | — |
| 16 | CAN 1 Low | — | W82 | — | 0.5 | OEM-T121-58 | — | — | — |
| 17 | CAN 1 High | — | W81 | — | 0.5 | OEM-T121-60 | — | — | — |
| 18 | Ignition switch in | — | W83 | — | 0.5 | NEW-KEYON-1 | — | — | — |
| 19 | Power ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Digital 3 | — | W73 | — | 0.5 | OEM-T121-54 | — | — | — |
| 20 | Power ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | CAN 2 Low | — | — | — | — | — | — | — | — |
| 22 | CAN 2 High | — | — | — | — | — | — | — | — |
| 23 | Main relay feed | — | W6 | — | 1.25 | MAIN-R-OUT | — | — | — |
| 3 | Digital 4 | — | W75 | — | 0.5 | OEM-T121-38 | — | — | — |
| 4 | VR 2 positive | — | — | — | — | — | — | — | — |
| 5 | VR 1 positive | — | W36 | — | 0.5 | OEM-T121-82 | — | — | — |
| 6 | ETB 1 negative | — | W50 | — | 0.5 | OEM-T121-117 | — | — | — |
| 7 | ETB 1 positive | — | W49 | — | 0.5 | OEM-T121-118 | — | — | — |
| 8 | ETB 2 negative | — | — | — | — | — | — | — | — |
| 9 | Digital 5 | — | W76 | — | 0.5 | OEM-T121-39 | — | — | — |
PROTEUS-Black35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Highside 2 | — | — | — | — | — | — | — | — |
| 10 | Lowside 13 | — | W61 | — | 0.5 | OEM-T121-63 | — | — | — |
| 11 | Lowside 14 | — | W62 | — | 0.5 | OEM-T121-25 | — | — | — |
| 12 | Lowside 15 | — | W63 | — | 0.5 | OEM-T121-80 | — | — | — |
| 13 | Highside 3 | — | — | — | — | — | — | — | — |
| 14 | Highside 4 | — | — | — | — | — | — | — | — |
| 15 | Injector 2 | — | W46 | — | 0.5 | OEM-T121-89 | — | — | — |
| 16 | Injector 4 | — | W48 | — | 0.5 | OEM-T121-88 | — | — | — |
| 17 | Power ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 18 | Power ground | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 19 | Injector 8 | — | W68 | — | 0.5 | OEM-T121-47 | — | — | — |
| 2 | Highside 1 | — | — | — | — | — | — | — | — |
| 20 | Lowside 10 | — | W58 | — | 0.5 | OEM-T121-65 | — | — | — |
| 21 | Lowside 12 | — | W60 | — | 0.5 | OEM-T121-5 | — | — | — |
| 22 | Ignition 3 | — | W43 | — | 0.5 | OEM-T121-103 | — | — | — |
| 23 | Lowside 16 | — | W64 | — | 0.5 | OEM-T121-104 | — | — | — |
| 24 | Power ground | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Ignition 12 | — | — | — | — | — | — | — | — |
| 26 | Ignition 11 | — | — | — | — | — | — | — | — |
| 27 | Ignition 10 | — | — | — | — | — | — | — | — |
| 28 | Ignition 9 | — | — | — | — | — | — | — | — |
| 29 | Ignition 8 | — | — | — | — | — | — | — | — |
| 3 | Injector 1 | — | W45 | — | 0.5 | OEM-T121-96 | — | — | — |
| 30 | Ignition 7 | — | — | — | — | — | — | — | — |
| 31 | Ignition 6 | — | — | — | — | — | — | — | — |
| 32 | Ignition 5 | — | — | — | — | — | — | — | — |
| 33 | Ignition 4 | — | W44 | — | 0.5 | OEM-T121-94 | — | — | — |
| 34 | Ignition 2 | — | W42 | — | 0.5 | OEM-T121-95 | — | — | — |
| 35 | Ignition 1 | — | W41 | — | 0.5 | OEM-T121-102 | — | — | — |
| 4 | Injector 3 | — | W47 | — | 0.5 | OEM-T121-97 | — | — | — |
| 5 | Injector 5 | — | W65 | — | 0.5 | OEM-T121-105 | — | — | — |
| 6 | Injector 6 | — | W66 | — | 0.5 | OEM-T121-115 | — | — | — |
| 7 | Injector 7 | — | W67 | — | 0.5 | OEM-T121-22 | — | — | — |
| 8 | Injector 9 | — | W69 | — | 0.5 | OEM-T121-48 | — | — | — |
| 9 | Lowside 11 | — | W59 | — | 0.5 | OEM-T121-66 | — | — | — |
PROTEUS-White35
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sensor ground | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 10 | 5V supply #2 | — | W31 | — | 0.5 | OEM-T121-72 | — | — | — |
| 11 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 12 | 12V sensor supply | — | — | — | — | — | — | — | — |
| 13 | Analog Volt 1 | — | W51 | — | 0.5 | OEM-T121-53 | — | — | — |
| 14 | Analog Volt 3 | — | W53 | — | 0.5 | OEM-T121-33 | — | — | — |
| 15 | Analog Volt 5 | — | W55 | — | 0.5 | OEM-T121-35 | — | — | — |
| 16 | Analog Volt 7 | — | W70 | — | 0.5 | OEM-T121-68 | — | — | — |
| 17 | Analog Volt 9 | — | W78 | — | 0.5 | OEM-T121-41 | — | — | — |
| 18 | Analog Volt 11 | — | W80 | — | 0.5 | OEM-T121-55 | — | — | — |
| 19 | Thermistor 1 | — | — | — | — | — | — | — | — |
| 2 | Sensor ground | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 20 | Coolant temp (CLT) | — | W57 | — | 0.5 | OEM-T121-93 | — | — | — |
| 21 | 5V supply #1 | — | W32 | — | 0.5 | OEM-T121-73 | — | — | — |
| 22 | 5V supply #2 | — | W33 | — | 0.5 | OEM-T121-83 | — | — | — |
| 23 | Sensor ground | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | Analog Volt 2 | — | W52 | — | 0.5 | OEM-T121-101 | — | — | — |
| 25 | Analog Volt 4 | — | W54 | — | 0.5 | OEM-T121-84 | — | — | — |
| 26 | Analog Volt 6 | — | W56 | — | 0.5 | OEM-T121-92 | — | — | — |
| 27 | Analog Volt 8 | — | W71 | — | 0.5 | OEM-T121-69 | — | — | — |
| 28 | Analog Volt 10 | — | W79 | — | 0.5 | OEM-T121-49 | — | — | — |
| 29 | Sensor ground | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Sensor ground | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 30 | Intake air temp (IAT) | — | W72 | — | 0.5 | OEM-T121-85 | — | — | — |
| 31 | Thermistor 4 | — | — | — | — | — | — | — | — |
| 32 | 5V supply #1 | — | W34 | — | 0.5 | OEM-T121-98 | — | — | — |
| 33 | 5V supply #2 | — | W35 | — | 0.5 | OEM-T121-99 | — | — | — |
| 34 | Knock 1 | — | W39 | — | 0.5 | OEM-T121-106 | — | — | — |
| 35 | Knock 2 | — | W40 | — | 0.5 | OEM-T121-107 | — | — | — |
| 4 | Sensor ground | — | W26 | — | 0.5 | SP-0V-1 | — | — | — |
| 5 | Sensor ground | — | W27 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground | — | W28 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Sensor ground | — | W29 | — | 0.5 | SP-0V-1 | — | — | — |
| 8 | Sensor ground | — | W30 | — | 0.5 | SP-0V-1 | — | — | — |
| 9 | 5V supply #1 | — | — | — | — | — | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-T121-108 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-T121-29 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-T121-34 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-T121-36 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-T121-90 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | OEM-T121-91 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | PROTEUS-White35-1 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | PROTEUS-White35-2 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | PROTEUS-White35-23 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | PROTEUS-White35-29 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | PROTEUS-White35-3 | — | — | — |
| 1 | — | — | W26 | — | 0.5 | PROTEUS-White35-4 | — | — | — |
| 1 | — | — | W27 | — | 0.5 | PROTEUS-White35-5 | — | — | — |
| 1 | — | — | W28 | — | 0.5 | PROTEUS-White35-6 | — | — | — |
| 1 | — | — | W29 | — | 0.5 | PROTEUS-White35-7 | — | — | — |
| 1 | — | — | W30 | — | 0.5 | PROTEUS-White35-8 | — | — | — |
| 1 | — | — | W37 | — | 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 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.5 | MAIN-R-COIL- | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-T121-1 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-T121-2 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | PROTEUS-Black23-14 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | PROTEUS-Black23-19 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | PROTEUS-Black23-20 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | PROTEUS-Black35-17 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | PROTEUS-Black35-18 | — | — | — |
| 1 | — | — | W14 | — | 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 | MAIN-R-COIL- + PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Relay coil negative (ECU low-side driver) + Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground + load | 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-Black35-23 | Lowside 16 | low_side_out | corroborated | |
| OEM-T121-105 | Diverter valve (N249) | low_side_out | PROTEUS-Black35-5 | Injector 5 | injector_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-Black35-6 | Injector 6 | injector_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 | — | — | — | corroborated | |
| OEM-T121-2 | ECU ground | ground | MAIN-R-COIL- + PROTEUS-Black23-14 + PROTEUS-Black23-19 + PROTEUS-Black23-20 + PROTEUS-Black35-17 + PROTEUS-Black35-18 + PROTEUS-Black35-24 | Relay coil negative (ECU low-side driver) + Power ground + Power ground + Power ground + Power ground + Power ground + Power ground | ground + load | corroborated | |
| OEM-T121-21 | ECM power (J271 relay feed) | power_in | — | — | — | corroborated | |
| OEM-T121-22 | Brake vacuum pump (V192) | low_side_out | PROTEUS-Black35-7 | Injector 7 | injector_out | single_source | |
| OEM-T121-25 | V144 Evaporative diagnostic pump (Pin 2) | low_side_out | PROTEUS-Black35-11 | Lowside 14 | low_side_out | corroborated | |
| OEM-T121-27 | MAF sensor supply (G70) | power_in | — | — | — | corroborated | |
| OEM-T121-28 | Alternator DF terminal (charge warning) | digital_in | PROTEUS-Black23-10 | Digital 1 | digital_in | single_source | |
| 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 | MAIN-R-COIL+ | Relay coil positive (ignition-switched +12V) | power_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-T121-38 | Cruise control switch (E45) | digital_in | PROTEUS-Black23-3 | Digital 4 | digital_in | single_source | |
| OEM-T121-39 | Clutch pedal switch (F36) | digital_in | PROTEUS-Black23-9 | Digital 5 | digital_in | single_source | |
| OEM-T121-40 | A/C signal | digital_in | PROTEUS-Black23-11 | Digital 6 | digital_in | single_source | |
| OEM-T121-41 | A/C signal | digital_in | PROTEUS-White35-17 | Analog Volt 9 | analog_in | single_source | |
| OEM-T121-43 | K-line diagnostics (OBD pin 7) | serial | — | — | — | corroborated | |
| OEM-T121-47 | Check engine light (MIL) | low_side_out | PROTEUS-Black35-19 | Injector 8 | injector_out | corroborated | |
| OEM-T121-48 | EPC warning light | low_side_out | PROTEUS-Black35-8 | Injector 9 | injector_out | corroborated | |
| OEM-T121-49 | Power steering pressure switch (F88) | digital_in | PROTEUS-White35-28 | Analog Volt 10 | analog_in | single_source | |
| OEM-T121-5 | Wideband lambda heater (Z19) | low_side_out | PROTEUS-Black35-21 | Lowside 12 | low_side_out | corroborated | |
| OEM-T121-50 | Power steering pressure switch supply (F88) | power_in | — | — | — | single_source | |
| 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-T121-55 | Brake pedal switch (F) | digital_in | PROTEUS-White35-18 | Analog Volt 11 | analog_in | single_source | |
| OEM-T121-56 | Brake pedal switch (F) | digital_in | — | — | — | single_source | |
| OEM-T121-57 | Cruise control switch (E45) | digital_in | — | — | — | single_source | |
| 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 | — | — | — | 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-T121-67 | Crash sensor signal | digital_in | — | — | — | single_source | |
| 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-T121-75 | Cruise control switch (E45) | digital_in | — | — | — | single_source | |
| OEM-T121-76 | Cruise control switch (E45) | digital_in | — | — | — | single_source | |
| OEM-T121-80 | V144 Evap Diagnostic Pump (Pin 1) | low_side_out | PROTEUS-Black35-12 | Lowside 15 | low_side_out | 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 | — | — | — | 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 | OEM-T121-3 | MAIN-R-COIL+ | 0.5 | no route | Ignition switch +12V (term 15) | — | |
| W4 | NEW-BATT-1 | MAIN-R-IN | 1.25 | no route | Relay contact input (battery + via main fuse) | — | |
| W5 | MAIN-R-COIL- | SP-GND-1 | 0.5 | no route | Relay coil negative (ECU low-side driver) | — | |
| W6 | MAIN-R-OUT | PROTEUS-Black23-23 | 1.25 | no route | Relay contact output (switched +12V bus) | — | |
| W7 | OEM-T121-1 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W8 | OEM-T121-2 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W9 | SP-GND-1 | PROTEUS-Black23-14 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | PROTEUS-Black23-19 | 0.85 | no route | Power ground | — | |
| W11 | SP-GND-1 | PROTEUS-Black23-20 | 0.85 | no route | Power ground | — | |
| W12 | SP-GND-1 | PROTEUS-Black35-17 | 0.85 | no route | Power ground | — | |
| W13 | SP-GND-1 | PROTEUS-Black35-18 | 0.85 | no route | Power ground | — | |
| W14 | SP-GND-1 | PROTEUS-Black35-24 | 0.85 | no route | Power ground | — | |
| W15 | OEM-T121-108 | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W16 | OEM-T121-29 | SP-0V-1 | 0.5 | no route | MAF sensor ground (G70) | — | |
| W17 | OEM-T121-34 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 1 ground (G79) | — | |
| W18 | OEM-T121-36 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 2 ground (G185) | — | |
| W19 | OEM-T121-90 | SP-0V-1 | 0.5 | no route | Crank position sensor ground (G28) | — | |
| W20 | OEM-T121-91 | SP-0V-1 | 0.5 | no route | Throttle position sensor ground (G187/G188) | — | |
| W21 | SP-0V-1 | PROTEUS-White35-1 | 0.5 | no route | Sensor ground | — | |
| W22 | SP-0V-1 | PROTEUS-White35-2 | 0.5 | no route | Sensor ground | — | |
| W23 | SP-0V-1 | PROTEUS-White35-23 | 0.5 | no route | Sensor ground | — | |
| W24 | SP-0V-1 | PROTEUS-White35-29 | 0.5 | no route | Sensor ground | — | |
| W25 | SP-0V-1 | PROTEUS-White35-3 | 0.5 | no route | Sensor ground | — | |
| W26 | SP-0V-1 | PROTEUS-White35-4 | 0.5 | no route | Sensor ground | — | |
| W27 | SP-0V-1 | PROTEUS-White35-5 | 0.5 | no route | Sensor ground | — | |
| W28 | SP-0V-1 | PROTEUS-White35-6 | 0.5 | no route | Sensor ground | — | |
| W29 | SP-0V-1 | PROTEUS-White35-7 | 0.5 | no route | Sensor ground | — | |
| W30 | SP-0V-1 | PROTEUS-White35-8 | 0.5 | no route | Sensor ground | — | |
| W31 | OEM-T121-72 | PROTEUS-White35-10 | 0.5 | no route | Accelerator pedal position 1 5V supply (G79) | — | |
| W32 | OEM-T121-73 | PROTEUS-White35-21 | 0.5 | no route | Accelerator pedal position 2 5V supply (G185) | — | |
| W33 | OEM-T121-83 | PROTEUS-White35-22 | 0.5 | no route | Throttle position sensor 5V supply (G187/G188) | — | |
| W34 | OEM-T121-98 | PROTEUS-White35-32 | 0.5 | no route | Cam + boost sensor 5V supply (G40/G31) | — | |
| W35 | OEM-T121-99 | PROTEUS-White35-33 | 0.5 | no route | Knock sensor 5V supply (G61/G66) | — | |
| W36 | OEM-T121-82 | PROTEUS-Black23-5 | 0.5 | no route | Crank position sensor (G28) | — | |
| W37 | SP-0V-1 | PROTEUS-Black23-13 | 0.5 | no route | VR 1 negative | — | |
| W38 | OEM-T121-86 | PROTEUS-Black23-1 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W39 | OEM-T121-106 | PROTEUS-White35-34 | 0.5 | no route | Knock sensor 1 (G61) | — | |
| W40 | OEM-T121-107 | PROTEUS-White35-35 | 0.5 | no route | Knock sensor 2 (G66) | — | |
| W41 | OEM-T121-102 | PROTEUS-Black35-35 | 0.5 | no route | Ignition coil 1 (N127) | — | |
| W42 | OEM-T121-95 | PROTEUS-Black35-34 | 0.5 | no route | Ignition coil 2 (N128) | — | |
| W43 | OEM-T121-103 | PROTEUS-Black35-22 | 0.5 | no route | Ignition coil 3 (N158) | — | |
| W44 | OEM-T121-94 | PROTEUS-Black35-33 | 0.5 | no route | Ignition coil 4 (N163) | — | |
| W45 | OEM-T121-96 | PROTEUS-Black35-3 | 0.5 | no route | Injector 1 (N30) | — | |
| W46 | OEM-T121-89 | PROTEUS-Black35-15 | 0.5 | no route | Injector 2 (N31) | — | |
| W47 | OEM-T121-97 | PROTEUS-Black35-4 | 0.5 | no route | Injector 3 (N32) | — | |
| W48 | OEM-T121-88 | PROTEUS-Black35-16 | 0.5 | no route | Injector 4 (N33) | — | |
| W49 | OEM-T121-118 | PROTEUS-Black23-7 | 0.5 | no route | Throttle motor G186 (−) | — | |
| W50 | OEM-T121-117 | PROTEUS-Black23-6 | 0.5 | no route | Throttle motor G186 (+) | — | |
| W51 | OEM-T121-53 | PROTEUS-White35-13 | 0.5 | no route | MAF sensor signal (G70) | — | |
| W52 | OEM-T121-101 | PROTEUS-White35-24 | 0.5 | no route | Boost pressure sensor (G31) | — | |
| W53 | OEM-T121-33 | PROTEUS-White35-14 | 0.5 | no route | Accelerator pedal position 1 (G79) | — | |
| W54 | OEM-T121-84 | PROTEUS-White35-25 | 0.5 | no route | Throttle position sensor 1 (G187) | — | |
| W55 | OEM-T121-35 | PROTEUS-White35-15 | 0.5 | no route | Accelerator pedal position 2 (G185) | — | |
| W56 | OEM-T121-92 | PROTEUS-White35-26 | 0.5 | no route | Throttle position sensor 2 (G188) | — | |
| W57 | OEM-T121-93 | PROTEUS-White35-20 | 0.5 | no route | Engine coolant temperature (G62) | — | |
| W58 | OEM-T121-65 | PROTEUS-Black35-20 | 0.5 | no route | Fuel pump relay control | — | |
| W59 | OEM-T121-66 | PROTEUS-Black35-9 | 0.5 | no route | Secondary-air pump relay (J299) | — | |
| W60 | OEM-T121-5 | PROTEUS-Black35-21 | 0.5 | no route | Wideband lambda heater (Z19) | — | |
| W61 | OEM-T121-63 | PROTEUS-Black35-10 | 0.5 | no route | Post-cat lambda heater (Z29) | — | |
| W62 | OEM-T121-25 | PROTEUS-Black35-11 | 0.5 | no route | V144 Evaporative diagnostic pump (Pin 2) | — | |
| W63 | OEM-T121-80 | PROTEUS-Black35-12 | 0.5 | no route | V144 Evap Diagnostic Pump (Pin 1) | — | |
| W64 | OEM-T121-104 | PROTEUS-Black35-23 | 0.5 | no route | Boost control solenoid (N75) | — | |
| W65 | OEM-T121-105 | PROTEUS-Black35-5 | 0.5 | no route | Diverter valve (N249) | — | |
| W66 | OEM-T121-115 | PROTEUS-Black35-6 | 0.5 | no route | VVT camshaft adjustment valve (N205) | — | |
| W67 | OEM-T121-22 | PROTEUS-Black35-7 | 0.5 | no route | Brake vacuum pump (V192) | — | |
| W68 | OEM-T121-47 | PROTEUS-Black35-19 | 0.5 | no route | Check engine light (MIL) | — | |
| W69 | OEM-T121-48 | PROTEUS-Black35-8 | 0.5 | no route | EPC warning light | — | |
| W70 | OEM-T121-68 | PROTEUS-White35-16 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W71 | OEM-T121-69 | PROTEUS-White35-27 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W72 | OEM-T121-85 | PROTEUS-White35-30 | 0.5 | no route | Intake air temperature (G42) | — | |
| W73 | OEM-T121-54 | PROTEUS-Black23-2 | 0.5 | no route | Road speed signal (VSS) | — | |
| W74 | OEM-T121-28 | PROTEUS-Black23-10 | 0.5 | no route | Alternator DF terminal (charge warning) | — | |
| W75 | OEM-T121-38 | PROTEUS-Black23-3 | 0.5 | no route | Cruise control switch (E45) | — | |
| W76 | OEM-T121-39 | PROTEUS-Black23-9 | 0.5 | no route | Clutch pedal switch (F36) | — | |
| W77 | OEM-T121-40 | PROTEUS-Black23-11 | 0.5 | no route | A/C signal | — | |
| W78 | OEM-T121-41 | PROTEUS-White35-17 | 0.5 | no route | A/C signal | — | |
| W79 | OEM-T121-49 | PROTEUS-White35-28 | 0.5 | no route | Power steering pressure switch (F88) | — | |
| W80 | OEM-T121-55 | PROTEUS-White35-18 | 0.5 | no route | Brake pedal switch (F) | — | |
| W81 | OEM-T121-60 | PROTEUS-Black23-17 | 0.5 | no route | CAN bus high | — | |
| W82 | OEM-T121-58 | PROTEUS-Black23-16 | 0.5 | no route | CAN bus low | — | |
| W83 | NEW-KEYON-1 | PROTEUS-Black23-18 | 0.5 | no route | Ignition switch in | — |
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 (13)
| 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. |
| warn | NET_FAMILY | OEM-T121-41 ↔ PROTEUS-White35-17 | OEM-T121-41 "A/C signal" [digital_in] is wired to PROTEUS-White35-17 "Analog Volt 9" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-T121-49 ↔ PROTEUS-White35-28 | OEM-T121-49 "Power steering pressure switch (F88)" [digital_in] is wired to PROTEUS-White35-28 "Analog Volt 10" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-T121-55 ↔ PROTEUS-White35-18 | OEM-T121-55 "Brake pedal switch (F)" [digital_in] is wired to PROTEUS-White35-18 "Analog Volt 11" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| info | NET_FAMILY | OEM-T121-105 ↔ PROTEUS-Black35-5 | OEM-T121-105 "Diverter valve (N249)" [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-T121-115 ↔ PROTEUS-Black35-6 | OEM-T121-115 "VVT camshaft adjustment valve (N205)" [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-T121-22 ↔ PROTEUS-Black35-7 | OEM-T121-22 "Brake vacuum pump (V192)" [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-T121-3 ↔ MAIN-R-COIL+ | OEM-T121-3 "Ignition switch +12V (term 15)" [digital_in] is wired to MAIN-R-COIL+ "Relay coil positive (ignition-switched +12V)" [power_in]. Switched supply used as the ignition-on sense. |
| info | NET_FAMILY | OEM-T121-47 ↔ PROTEUS-Black35-19 | OEM-T121-47 "Check engine light (MIL)" [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 | OEM-T121-48 ↔ PROTEUS-Black35-8 | OEM-T121-48 "EPC warning light" [low_side_out] is wired to PROTEUS-Black35-8 "Injector 9" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | PROTEUS-White35-29 ↔ PROTEUS-Black23-13 | PROTEUS-White35-29 "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 | 15 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-T121-50 Power steering pressure switch supply (F88); OEM-T121-51 Wideband lambda pump (G39); OEM-T121-52 Wideband lambda pump (G39); OEM-T121-56 Brake pedal switch (F); OEM-T121-57 Cruise control switch (E45); OEM-T121-64 EVAP canister valve (N80); OEM-T121-67 Crash sensor signal; OEM-T121-70 Wideband lambda Nernst signal (G39); OEM-T121-71 Wideband lambda Nernst signal (G39); OEM-T121-75 Cruise control switch (E45); OEM-T121-76 Cruise control switch (E45); OEM-T121-9 Secondary-air injection valve (N112) |
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 2026-10-23. Review every wire against both manuals before building. Not wired: - OEM-T121 62: Battery constant +12V (term 30): rusEFI Proteus has no battery-constant memory input; not needed - OEM-T121 64: EVAP canister valve (N80): no free low_side/relay_control/heater_low_side/ls_hs/injector on rusEFI Proteus - OEM-T121 9: Secondary-air injection valve (N112): no free low_side/relay_control/heater_low_side/ls_hs/injector on rusEFI Proteus - 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 56: Brake pedal switch (F): no free switch_in/frequency_in/analog_0_5 on rusEFI Proteus - OEM-T121 57: Cruise control switch (E45): no free switch_in/frequency_in/analog_0_5 on rusEFI Proteus - OEM-T121 67: Crash sensor signal: no free switch_in/frequency_in/analog_0_5 on rusEFI Proteus - OEM-T121 75: Cruise control switch (E45): no free switch_in/frequency_in/analog_0_5 on rusEFI Proteus - OEM-T121 76: Cruise control switch (E45): no free switch_in/frequency_in/analog_0_5 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 - OEM-T121 50: Power steering pressure switch supply (F88): no rule for class sensor_supply_in; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Emtron SL4/SL6/SL8 pinout pages | https://docs.emtronaustralia.com.au/engine-management/wiring/index.html | archive | 2026-10-05 | e52b3da9996a |
| 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 1.8t Golf AWP ECU wiring breakdown (Bentley-derived) | https://nefariousmotorsports.com/forum/index.php?topic=18710.0 | — | — | — |
| 3 | community_copy | NefMoto: ME7.5 ECU bench-flashing power/ground pins | http://nefmoto.com/wiki/index.php?title=ECU_Bench_Flashing | — | — | — |
| 3 | forum | rusEFI Mazda Miata 2002 engine wiring | https://github.com/rusefi/rusefi/wiki/Mazda-Miata-2002 | archive | 2026-10-05 | cc3cae670408 |
| 3 | community_copy | vwressources: Bosch Motronic ME7.5 (AMK/ARY/AUQ/ARX/AUM) T121 pinout | https://www.vwressources.planethoster.world/me75_pinout.html | — | — | — |