VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 → Link G4X FuryX 122-4000 (auto)
VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 — Link — G4X FuryX
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-11
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | 1: read the Findings page before cutting any wire |
| Size of the job | 48 wires · 6 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-A-23 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | G4XFURYX-A-A5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | G4XFURYX-B-B5 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | OEM-A-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-10 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-55 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-56 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-7 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | G4XFURYX-A-A25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | G4XFURYX-A-A34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | G4XFURYX-B-B25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | G4XFURYX-B-B34 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-A-33 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-67 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | G4XFURYX-A-A24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | G4XFURYX-B-B22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A-41 | G4XFURYX-A-A32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-A-68 | G4XFURYX-A-A8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-44 | G4XFURYX-A-A9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-34 | G4XFURYX-B-B9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-8 | G4XFURYX-A-A13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-60 | G4XFURYX-A-A12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-52 | G4XFURYX-A-A11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-24 | G4XFURYX-A-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-3 | G4XFURYX-A-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-26 | G4XFURYX-A-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-4 | G4XFURYX-A-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-25 | G4XFURYX-B-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-2 | G4XFURYX-B-B3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-17 | G4XFURYX-A-A17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-40 | G4XFURYX-A-A22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-14 | G4XFURYX-A-A15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-49 | G4XFURYX-A-A21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-6 | G4XFURYX-A-A20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-9 | G4XFURYX-A-A19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-27 | G4XFURYX-A-A18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-31 | G4XFURYX-B-B10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-5 | G4XFURYX-A-A29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-53 | G4XFURYX-A-A28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-22 | G4XFURYX-A-A27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-51 | G4XFURYX-A-A26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-20 | G4XFURYX-A-A33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-15 | G4XFURYX-A-A16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-36 | G4XFURYX-B-B6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-65 | G4XFURYX-A-A30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-37 | G4XFURYX-A-A31 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-39 | G4XFURYX-A-A23 | 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 | G4XFURYX-A-A24 | G4XFURYX-A-A32 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 2 | G4XFURYX-A-A24 | G4XFURYX-A-A5 | open (OL) | sensor ground must not touch +12 V supply | |
| 3 | G4XFURYX-A-A25 | G4XFURYX-A-A32 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | G4XFURYX-A-A25 | G4XFURYX-A-A5 | open (OL) | power ground must not touch +12 V supply | |
| 5 | G4XFURYX-A-A5 | G4XFURYX-A-A32 | 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
G4XFURYX-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | Injector 4 | — | W28 | — | 0.5 | OEM-A-4 | — | — | — |
| A10 | Ignition 4 | — | — | — | — | — | — | — | — |
| A11 | Ignition 3 | — | W24 | — | 0.5 | OEM-A-52 | — | — | — |
| A12 | Ignition 2 | — | W23 | — | 0.5 | OEM-A-60 | — | — | — |
| A13 | Ignition 1 | — | W22 | — | 0.5 | OEM-A-8 | — | — | — |
| A14 | Analog Volt 4 | — | — | — | — | — | — | — | — |
| A15 | Analog Temp 1 | — | W33 | — | 0.5 | OEM-A-14 | — | — | — |
| A16 | Analog Temp 2 | — | W44 | — | 0.5 | OEM-A-15 | — | — | — |
| A17 | Analog Volt 1 | — | W31 | — | 0.5 | OEM-A-17 | — | — | — |
| A18 | Aux 4 | — | W37 | — | 0.5 | OEM-A-27 | — | — | — |
| A19 | Aux 3 | — | W36 | — | 0.5 | OEM-A-9 | — | — | — |
| A2 | Injector 3 | — | W27 | — | 0.5 | OEM-A-26 | — | — | — |
| A20 | Aux 2 | — | W35 | — | 0.5 | OEM-A-6 | — | — | — |
| A21 | Aux 1 | — | W34 | — | 0.5 | OEM-A-49 | — | — | — |
| A22 | Analog Volt 2 | — | W32 | — | 0.5 | OEM-A-40 | — | — | — |
| A23 | Digital Input 3 | — | W48 | — | 0.5 | OEM-A-39 | — | — | — |
| A24 | Sensor Ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| A25 | System Ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| A26 | Aux 8 | — | W42 | — | 0.5 | OEM-A-51 | — | — | — |
| A27 | Aux 7 | — | W41 | — | 0.5 | OEM-A-22 | — | — | — |
| A28 | Aux 6 | — | W40 | — | 0.5 | OEM-A-53 | — | — | — |
| A29 | Aux 5 | — | W39 | — | 0.5 | OEM-A-5 | — | — | — |
| A3 | Injector 2 | — | W26 | — | 0.5 | OEM-A-3 | — | — | — |
| A30 | Digital Input 1 | — | W46 | — | 0.5 | OEM-A-65 | — | — | — |
| A31 | Digital Input 2 | — | W47 | — | 0.5 | OEM-A-37 | — | — | — |
| A32 | +5V Out | — | W18 | — | 0.5 | OEM-A-41 | — | — | — |
| A33 | Analog Volt 3 | — | W43 | — | 0.5 | OEM-A-20 | — | — | — |
| A34 | System Ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| A4 | Injector 1 | — | W25 | — | 0.5 | OEM-A-24 | — | — | — |
| A5 | +14V ECU Power | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| A6 | +8V Out | — | — | — | — | — | — | — | — |
| A7 | Shield Ground | — | — | — | — | — | — | — | — |
| A8 | Trigger 1 | — | W19 | — | 0.5 | OEM-A-68 | — | — | — |
| A9 | Trigger 2 | — | W20 | — | 0.5 | OEM-A-44 | — | — | — |
G4XFURYX-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| B1 | Injector 8 | — | — | — | — | — | — | — | — |
| B10 | WBO Heater | — | W38 | — | 0.5 | OEM-A-31 | — | — | — |
| B11 | WBO MES | — | — | — | — | — | — | — | — |
| B12 | Ignition 6 | — | — | — | — | — | — | — | — |
| B13 | Ignition 5 | — | — | — | — | — | — | — | — |
| B14 | WBO RE | — | — | — | — | — | — | — | — |
| B15 | Analog Volt 6 | — | — | — | — | — | — | — | — |
| B16 | Analog Volt 7 | — | — | — | — | — | — | — | — |
| B17 | Shield Ground | — | — | — | — | — | — | — | — |
| B18 | Aux 9 | — | — | — | — | — | — | — | — |
| B19 | Digital Input 6 | — | — | — | — | — | — | — | — |
| B2 | Injector 7 | — | — | — | — | — | — | — | — |
| B20 | Digital Input 5 | — | — | — | — | — | — | — | — |
| B21 | Digital Input 4 | — | — | — | — | — | — | — | — |
| B22 | Sensor Ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| B23 | Analog Volt 8 | — | — | — | — | — | — | — | — |
| B24 | Analog Volt 9 | — | — | — | — | — | — | — | — |
| B25 | System Ground | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| B26 | Aux 10 | — | — | — | — | — | — | — | — |
| B27 | CAN 2 H | — | — | — | — | — | — | — | — |
| B28 | CAN 2 L | — | — | — | — | — | — | — | — |
| B29 | Digital Input 8 | — | — | — | — | — | — | — | — |
| B3 | Injector 6 | — | W30 | — | 0.5 | OEM-A-2 | — | — | — |
| B30 | Digital Input 7 | — | — | — | — | — | — | — | — |
| B31 | WBO IPE | — | — | — | — | — | — | — | — |
| B32 | WBO APE | — | — | — | — | — | — | — | — |
| B33 | Analog Volt 5 | — | — | — | — | — | — | — | — |
| B34 | System Ground | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| B4 | Injector 5 | — | W29 | — | 0.5 | OEM-A-25 | — | — | — |
| B5 | Aux 9/10 E-Throttle Supply | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| B6 | Analog Temp 3 | — | W45 | — | 0.5 | OEM-A-36 | — | — | — |
| B7 | Analog Temp 4 | — | — | — | — | — | — | — | — |
| B8 | Knock 2 | — | — | — | — | — | — | — | — |
| B9 | Knock 1 | — | W21 | — | 0.5 | OEM-A-34 | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ground (E-1) | — | W4 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Ground (OBD1 EGR enable) | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Coolant temperature (CLT) | — | W33 | — | 0.5 | G4XFURYX-A-A15 | — | — | — |
| 15 | EGR temperature sensor | — | W44 | — | 0.5 | G4XFURYX-A-A16 | — | — | — |
| 16 | MAF ground | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | MAF signal | — | W31 | — | 0.5 | G4XFURYX-A-A17 | — | — | — |
| 2 | Injector 6 (cyl 6) | — | W30 | — | 0.5 | G4XFURYX-B-B3 | — | — | — |
| 20 | O2 sensor 1 (primary) | — | W43 | — | 0.5 | G4XFURYX-A-A33 | — | — | — |
| 21 | Diagnostic L-line | — | — | — | — | — | — | — | — |
| 22 | Tachometer output | — | W41 | — | 0.5 | G4XFURYX-A-A27 | — | — | — |
| 23 | ECU main power (from engine-electronics relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | Injector 1 (cyl 1) | — | W25 | — | 0.5 | G4XFURYX-A-A4 | — | — | — |
| 25 | Injector 5 (cyl 5) | — | W29 | — | 0.5 | G4XFURYX-B-B4 | — | — | — |
| 26 | Injector 3 (cyl 3) | — | W27 | — | 0.5 | G4XFURYX-A-A2 | — | — | — |
| 27 | Idle air control valve | — | W37 | — | 0.5 | G4XFURYX-A-A18 | — | — | — |
| 3 | Injector 2 (cyl 2) | — | W26 | — | 0.5 | G4XFURYX-A-A3 | — | — | — |
| 31 | EVAP canister purge valve | — | W38 | — | 0.5 | G4XFURYX-B-B10 | — | — | — |
| 33 | Sensor ground bus | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Knock sensor 1 | — | W21 | — | 0.5 | G4XFURYX-B-B9 | — | — | — |
| 36 | Intake air temperature (IAT) | — | W45 | — | 0.5 | G4XFURYX-B-B6 | — | — | — |
| 37 | A/C compressor switch | — | W47 | — | 0.5 | G4XFURYX-A-A31 | — | — | — |
| 38 | Ignition switch (run/start) | — | — | — | — | — | — | — | — |
| 39 | A/C switch (cabin) | — | W48 | — | 0.5 | G4XFURYX-A-A23 | — | — | — |
| 4 | Injector 4 (cyl 4) | — | W28 | — | 0.5 | G4XFURYX-A-A1 | — | — | — |
| 40 | Throttle position sensor 1 | — | W32 | — | 0.5 | G4XFURYX-A-A22 | — | — | — |
| 41 | TPS power (+5V) | — | W18 | — | 0.5 | G4XFURYX-A-A32 | — | — | — |
| 43 | Diagnostic K-line | — | — | — | — | — | — | — | — |
| 44 | Camshaft position sensor (G40) | — | W20 | — | 0.5 | G4XFURYX-A-A9 | — | — | — |
| 49 | Secondary air injection relay control | — | W34 | — | 0.5 | G4XFURYX-A-A21 | — | — | — |
| 5 | Check engine light (MIL) | — | W39 | — | 0.5 | G4XFURYX-A-A29 | — | — | — |
| 51 | MFA fuel-consumption signal | — | W42 | — | 0.5 | G4XFURYX-A-A26 | — | — | — |
| 52 | Ignition coil 4 (coil pack pin 4) | — | W24 | — | 0.5 | G4XFURYX-A-A11 | — | — | — |
| 53 | Idle air control valve (2nd) | — | W40 | — | 0.5 | G4XFURYX-A-A28 | — | — | — |
| 54 | Battery constant (+12V) | — | — | — | — | — | — | — | — |
| 55 | Ground (E-3) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 56 | Ground (E-4) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 59 | Mass airflow sensor (5th terminal) | — | — | — | — | — | — | — | — |
| 6 | Fuel pump relay control | — | W35 | — | 0.5 | G4XFURYX-A-A20 | — | — | — |
| 60 | Ignition coil 3 (coil pack pin 3) | — | W23 | — | 0.5 | G4XFURYX-A-A12 | — | — | — |
| 65 | Vehicle speed sensor (VSS) | — | W46 | — | 0.5 | G4XFURYX-A-A30 | — | — | — |
| 67 | Crank sensor return (VR-) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 68 | Crank position sensor (G28, VR+) | — | W19 | — | 0.5 | G4XFURYX-A-A8 | — | — | — |
| 7 | Ground (E-2) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Ignition coil 2 (coil pack pin 2) | — | W22 | — | 0.5 | G4XFURYX-A-A13 | — | — | — |
| 9 | Engine electronics relay control | — | W36 | — | 0.5 | G4XFURYX-A-A19 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W13 | — | 0.5 | OEM-A-16 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | OEM-A-33 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-A-67 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | G4XFURYX-A-A24 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | G4XFURYX-B-B22 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | G4XFURYX-A-A5 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | G4XFURYX-B-B5 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W4 | — | 0.85 | OEM-A-1 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | OEM-A-10 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-55 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-56 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A-7 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | G4XFURYX-A-A25 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | G4XFURYX-A-A34 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | G4XFURYX-B-B25 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | G4XFURYX-B-B34 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Ground (E-1) | ground | G4XFURYX-A-A25 + G4XFURYX-A-A34 + G4XFURYX-B-B25 + G4XFURYX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-10 | Ground (OBD1 EGR enable) | ground | G4XFURYX-A-A25 + G4XFURYX-A-A34 + G4XFURYX-B-B25 + G4XFURYX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-14 | Coolant temperature (CLT) | temp_in | G4XFURYX-A-A15 | Analog Temp 1 | temp_in | single_source | |
| OEM-A-15 | EGR temperature sensor | temp_in | G4XFURYX-A-A16 | Analog Temp 2 | temp_in | single_source | |
| OEM-A-16 | MAF ground | sensor_ground | G4XFURYX-A-A24 + G4XFURYX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-17 | MAF signal | analog_in | G4XFURYX-A-A17 | Analog Volt 1 | analog_in | single_source | |
| OEM-A-2 | Injector 6 (cyl 6) | injector_out | G4XFURYX-B-B3 | Injector 6 | injector_out | single_source | |
| OEM-A-20 | O2 sensor 1 (primary) | lambda_nb_in | G4XFURYX-A-A33 | Analog Volt 3 | analog_in | single_source | |
| OEM-A-21 | Diagnostic L-line | serial | — | — | — | single_source | |
| OEM-A-22 | Tachometer output | tacho_out | G4XFURYX-A-A27 | Aux 7 | switch_out | single_source | |
| OEM-A-23 | ECU main power (from engine-electronics relay) | power_in | G4XFURYX-A-A5 + G4XFURYX-B-B5 | +14V ECU Power + Aux 9/10 E-Throttle Supply | power_in | single_source | |
| OEM-A-24 | Injector 1 (cyl 1) | injector_out | G4XFURYX-A-A4 | Injector 1 | injector_out | single_source | |
| OEM-A-25 | Injector 5 (cyl 5) | injector_out | G4XFURYX-B-B4 | Injector 5 | injector_out | single_source | |
| OEM-A-26 | Injector 3 (cyl 3) | injector_out | G4XFURYX-A-A2 | Injector 3 | injector_out | single_source | |
| OEM-A-27 | Idle air control valve | low_side_out | G4XFURYX-A-A18 | Aux 4 | low_side_out | single_source | |
| OEM-A-3 | Injector 2 (cyl 2) | injector_out | G4XFURYX-A-A3 | Injector 2 | injector_out | single_source | |
| OEM-A-31 | EVAP canister purge valve | low_side_out | G4XFURYX-B-B10 | WBO Heater | low_side_out | single_source | |
| OEM-A-33 | Sensor ground bus | sensor_ground | G4XFURYX-A-A24 + G4XFURYX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-34 | Knock sensor 1 | knock_in | G4XFURYX-B-B9 | Knock 1 | knock_in | single_source | |
| OEM-A-36 | Intake air temperature (IAT) | temp_in | G4XFURYX-B-B6 | Analog Temp 3 | temp_in | single_source | |
| OEM-A-37 | A/C compressor switch | digital_in | G4XFURYX-A-A31 | Digital Input 2 | digital_in | single_source | |
| OEM-A-38 | Ignition switch (run/start) | digital_in | — | — | — | single_source | |
| OEM-A-39 | A/C switch (cabin) | digital_in | G4XFURYX-A-A23 | Digital Input 3 | digital_in | single_source | |
| OEM-A-4 | Injector 4 (cyl 4) | injector_out | G4XFURYX-A-A1 | Injector 4 | injector_out | single_source | |
| OEM-A-40 | Throttle position sensor 1 | analog_in | G4XFURYX-A-A22 | Analog Volt 2 | analog_in | single_source | |
| OEM-A-41 | TPS power (+5V) | vref | G4XFURYX-A-A32 | +5V Out | vref | single_source | |
| OEM-A-43 | Diagnostic K-line | serial | — | — | — | single_source | |
| OEM-A-44 | Camshaft position sensor (G40) | trigger_in | G4XFURYX-A-A9 | Trigger 2 | trigger_in | single_source | |
| OEM-A-49 | Secondary air injection relay control | low_side_out | G4XFURYX-A-A21 | Aux 1 | low_side_out | single_source | |
| OEM-A-5 | Check engine light (MIL) | low_side_out | G4XFURYX-A-A29 | Aux 5 | switch_out | single_source | |
| OEM-A-51 | MFA fuel-consumption signal | tacho_out | G4XFURYX-A-A26 | Aux 8 | switch_out | single_source | |
| OEM-A-52 | Ignition coil 4 (coil pack pin 4) | ignition_out | G4XFURYX-A-A11 | Ignition 3 | ignition_out | single_source | |
| OEM-A-53 | Idle air control valve (2nd) | low_side_out | G4XFURYX-A-A28 | Aux 6 | switch_out | single_source | |
| OEM-A-54 | Battery constant (+12V) | power_in | — | — | — | single_source | |
| OEM-A-55 | Ground (E-3) | ground | G4XFURYX-A-A25 + G4XFURYX-A-A34 + G4XFURYX-B-B25 + G4XFURYX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-56 | Ground (E-4) | ground | G4XFURYX-A-A25 + G4XFURYX-A-A34 + G4XFURYX-B-B25 + G4XFURYX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-59 | Mass airflow sensor (5th terminal) | sensor_out | — | — | — | single_source | |
| OEM-A-6 | Fuel pump relay control | low_side_out | G4XFURYX-A-A20 | Aux 2 | low_side_out | single_source | |
| OEM-A-60 | Ignition coil 3 (coil pack pin 3) | ignition_out | G4XFURYX-A-A12 | Ignition 2 | ignition_out | single_source | |
| OEM-A-65 | Vehicle speed sensor (VSS) | digital_in | G4XFURYX-A-A30 | Digital Input 1 | digital_in | single_source | |
| OEM-A-67 | Crank sensor return (VR-) | sensor_ground | G4XFURYX-A-A24 + G4XFURYX-B-B22 | Sensor Ground + Sensor Ground | sensor_ground | single_source | |
| OEM-A-68 | Crank position sensor (G28, VR+) | trigger_in | G4XFURYX-A-A8 | Trigger 1 | trigger_in | single_source | |
| OEM-A-7 | Ground (E-2) | ground | G4XFURYX-A-A25 + G4XFURYX-A-A34 + G4XFURYX-B-B25 + G4XFURYX-B-B34 | System Ground + System Ground + System Ground + System Ground | ground | single_source | |
| OEM-A-8 | Ignition coil 2 (coil pack pin 2) | ignition_out | G4XFURYX-A-A13 | Ignition 1 | ignition_out | single_source | |
| OEM-A-9 | Engine electronics relay control | low_side_out | G4XFURYX-A-A19 | Aux 3 | low_side_out | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-23 | SP-14V-1 | 0.85 | no route | ECU main power (from engine-electronics relay) | — | |
| W2 | SP-14V-1 | G4XFURYX-A-A5 | 0.85 | no route | +14V ECU Power | — | |
| W3 | SP-14V-1 | G4XFURYX-B-B5 | 0.85 | no route | Aux 9/10 E-Throttle Supply | — | |
| W4 | OEM-A-1 | SP-GND-1 | 0.85 | no route | Ground (E-1) | — | |
| W5 | OEM-A-10 | SP-GND-1 | 0.85 | no route | Ground (OBD1 EGR enable) | — | |
| W6 | OEM-A-55 | SP-GND-1 | 0.85 | no route | Ground (E-3) | — | |
| W7 | OEM-A-56 | SP-GND-1 | 0.85 | no route | Ground (E-4) | — | |
| W8 | OEM-A-7 | SP-GND-1 | 0.85 | no route | Ground (E-2) | — | |
| W9 | SP-GND-1 | G4XFURYX-A-A25 | 0.85 | no route | System Ground | — | |
| W10 | SP-GND-1 | G4XFURYX-A-A34 | 0.85 | no route | System Ground | — | |
| W11 | SP-GND-1 | G4XFURYX-B-B25 | 0.85 | no route | System Ground | — | |
| W12 | SP-GND-1 | G4XFURYX-B-B34 | 0.85 | no route | System Ground | — | |
| W13 | OEM-A-16 | SP-0V-1 | 0.5 | no route | MAF ground | — | |
| W14 | OEM-A-33 | SP-0V-1 | 0.5 | no route | Sensor ground bus | — | |
| W15 | OEM-A-67 | SP-0V-1 | 0.5 | no route | Crank sensor return (VR-) | — | |
| W16 | SP-0V-1 | G4XFURYX-A-A24 | 0.5 | no route | Sensor Ground | — | |
| W17 | SP-0V-1 | G4XFURYX-B-B22 | 0.5 | no route | Sensor Ground | — | |
| W18 | OEM-A-41 | G4XFURYX-A-A32 | 0.5 | no route | TPS power (+5V) | — | |
| W19 | OEM-A-68 | G4XFURYX-A-A8 | 0.5 | no route | Crank position sensor (G28, VR+) | — | |
| W20 | OEM-A-44 | G4XFURYX-A-A9 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W21 | OEM-A-34 | G4XFURYX-B-B9 | 0.5 | no route | Knock sensor 1 | — | |
| W22 | OEM-A-8 | G4XFURYX-A-A13 | 0.5 | no route | Ignition coil 2 (coil pack pin 2) | — | |
| W23 | OEM-A-60 | G4XFURYX-A-A12 | 0.5 | no route | Ignition coil 3 (coil pack pin 3) | — | |
| W24 | OEM-A-52 | G4XFURYX-A-A11 | 0.5 | no route | Ignition coil 4 (coil pack pin 4) | — | |
| W25 | OEM-A-24 | G4XFURYX-A-A4 | 0.5 | no route | Injector 1 (cyl 1) | — | |
| W26 | OEM-A-3 | G4XFURYX-A-A3 | 0.5 | no route | Injector 2 (cyl 2) | — | |
| W27 | OEM-A-26 | G4XFURYX-A-A2 | 0.5 | no route | Injector 3 (cyl 3) | — | |
| W28 | OEM-A-4 | G4XFURYX-A-A1 | 0.5 | no route | Injector 4 (cyl 4) | — | |
| W29 | OEM-A-25 | G4XFURYX-B-B4 | 0.5 | no route | Injector 5 (cyl 5) | — | |
| W30 | OEM-A-2 | G4XFURYX-B-B3 | 0.5 | no route | Injector 6 (cyl 6) | — | |
| W31 | OEM-A-17 | G4XFURYX-A-A17 | 0.5 | no route | MAF signal | — | |
| W32 | OEM-A-40 | G4XFURYX-A-A22 | 0.5 | no route | Throttle position sensor 1 | — | |
| W33 | OEM-A-14 | G4XFURYX-A-A15 | 0.5 | no route | Coolant temperature (CLT) | — | |
| W34 | OEM-A-49 | G4XFURYX-A-A21 | 0.5 | no route | Secondary air injection relay control | — | |
| W35 | OEM-A-6 | G4XFURYX-A-A20 | 0.5 | no route | Fuel pump relay control | — | |
| W36 | OEM-A-9 | G4XFURYX-A-A19 | 0.5 | no route | Engine electronics relay control | — | |
| W37 | OEM-A-27 | G4XFURYX-A-A18 | 0.5 | no route | Idle air control valve | — | |
| W38 | OEM-A-31 | G4XFURYX-B-B10 | 0.5 | no route | EVAP canister purge valve | — | |
| W39 | OEM-A-5 | G4XFURYX-A-A29 | 0.5 | no route | Check engine light (MIL) | — | |
| W40 | OEM-A-53 | G4XFURYX-A-A28 | 0.5 | no route | Idle air control valve (2nd) | — | |
| W41 | OEM-A-22 | G4XFURYX-A-A27 | 0.5 | no route | Tachometer output | — | |
| W42 | OEM-A-51 | G4XFURYX-A-A26 | 0.5 | no route | MFA fuel-consumption signal | — | |
| W43 | OEM-A-20 | G4XFURYX-A-A33 | 0.5 | no route | O2 sensor 1 (primary) | — | |
| W44 | OEM-A-15 | G4XFURYX-A-A16 | 0.5 | no route | EGR temperature sensor | — | |
| W45 | OEM-A-36 | G4XFURYX-B-B6 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W46 | OEM-A-65 | G4XFURYX-A-A30 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W47 | OEM-A-37 | G4XFURYX-A-A31 | 0.5 | no route | A/C compressor switch | — | |
| W48 | OEM-A-39 | G4XFURYX-A-A23 | 0.5 | no route | A/C switch (cabin) | — |
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 (9)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-A-38 | Required OEM function "Ignition switch (run/start)" (digital_in) is not connected to the new ECU. |
| warn | LOAD_UNKNOWN | G4XFURYX-A-A19 | G4XFURYX-A-A19 "Aux 3" drives OEM-A-9 Engine electronics relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XFURYX-A-A20 | G4XFURYX-A-A20 "Aux 2" drives OEM-A-6 Fuel pump relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | G4XFURYX-A-A21 | G4XFURYX-A-A21 "Aux 1" drives OEM-A-49 Secondary air injection relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-A-22 ↔ G4XFURYX-A-A27 | OEM-A-22 "Tachometer output" [tacho_out] is wired to G4XFURYX-A-A27 "Aux 7" [switch_out]. Frequency output on a general output: set it up as a tacho/frequency output with the right pull-up. |
| info | NET_FAMILY | OEM-A-5 ↔ G4XFURYX-A-A29 | OEM-A-5 "Check engine light (MIL)" [low_side_out] is wired to G4XFURYX-A-A29 "Aux 5" [switch_out]. Configure this output as low side. |
| info | NET_FAMILY | OEM-A-51 ↔ G4XFURYX-A-A26 | OEM-A-51 "MFA fuel-consumption signal" [tacho_out] is wired to G4XFURYX-A-A26 "Aux 8" [switch_out]. Frequency output on a general output: set it up as a tacho/frequency output with the right pull-up. |
| info | NET_FAMILY | OEM-A-53 ↔ G4XFURYX-A-A28 | OEM-A-53 "Idle air control valve (2nd)" [low_side_out] is wired to G4XFURYX-A-A28 "Aux 6" [switch_out]. Configure this output as low side. |
| info | UNMAPPED | OEM | 3 optional OEM pins are not mapped: OEM-A-21 Diagnostic L-line; OEM-A-43 Diagnostic K-line; OEM-A-59 Mass airflow sensor (5th terminal) |
Accepted (1)
| Code | Subject | Reason | By |
|---|---|---|---|
| REQUIRED_UNMAPPED | OEM-A-54 | Battery-constant (memory) feed of the stock ECU: the new ECU has no such input, so it is not needed. | mapping-proposal |
Notes
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for VW VR6 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online) Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Open items: - OEM-A 38: Ignition switch (run/start): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); Link G4X FuryX has no dedicated key-on input Not wired: - OEM-A 54: Battery constant (+12V): Link G4X FuryX has no battery-constant input; not needed - OEM-A 21: Diagnostic L-line: no free k_line on Link G4X FuryX - OEM-A 43: Diagnostic K-line: no free k_line on Link G4X FuryX - OEM-A 59: Mass airflow sensor (5th terminal): no rule for class sensor_signal; wire by hand
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Link: G4X FuryX quickstart + dealers | https://linkecu.com/documentation/FuryXQuickstartGuide.pdf | archive | 2026-10-05 | 5143b847c871 |
| 3 | community_copy | YourSpec: Link G4X FuryX flying-lead harness wiring list | https://wpm.yourspec.com/projects/view/1494 | — | — | — |
| 2 | community_copy | a2resource: VR6/ABA Motronic M2.9 (OBD1) engine control unit pinout | http://www.a2resource.com/electrical/management/motronicvr6aba.html | — | — | — |