VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 → MaxxECU MaxxECU PRO REV10+ (auto)
VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 — MaxxECU — MaxxECU PRO
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 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 | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 52 wires · 8 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 | MAXXECUPRO-C1-M4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | MAXXECUPRO-C3-M4 | 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 | MAXXECUPRO-C1-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-A-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-A-33 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-67 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-41 | MAXXECUPRO-C1-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-68 | MAXXECUPRO-C1-H3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-44 | MAXXECUPRO-C1-H4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-34 | MAXXECUPRO-C4-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-8 | MAXXECUPRO-C1-A2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-60 | MAXXECUPRO-C1-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-52 | MAXXECUPRO-C1-B2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-24 | MAXXECUPRO-C1-K1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-3 | MAXXECUPRO-C1-K2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-26 | MAXXECUPRO-C1-M1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-4 | MAXXECUPRO-C1-M2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-25 | MAXXECUPRO-C1-M3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-2 | MAXXECUPRO-C1-L3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-38 | MAXXECUPRO-C3-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-17 | MAXXECUPRO-C1-J3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-40 | MAXXECUPRO-C1-G2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-14 | MAXXECUPRO-C1-F1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-49 | MAXXECUPRO-C1-B4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-6 | MAXXECUPRO-C1-C4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-9 | MAXXECUPRO-C1-D4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-27 | MAXXECUPRO-C1-E4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-31 | MAXXECUPRO-C1-A1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-5 | MAXXECUPRO-C1-B1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-53 | MAXXECUPRO-C1-C1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-22 | MAXXECUPRO-C1-A4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-51 | MAXXECUPRO-C4-G1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-A-20 | MAXXECUPRO-C1-J4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-A-15 | MAXXECUPRO-C1-J1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-A-36 | MAXXECUPRO-C1-F2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-A-65 | MAXXECUPRO-C1-K3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-A-37 | MAXXECUPRO-C3-A3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-A-39 | MAXXECUPRO-C3-A4 | 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 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-G1 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 2 | MAXXECUPRO-C1-H1 | MAXXECUPRO-C1-M4 | open (OL) | sensor ground must not touch +12 V supply | |
| 3 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-G1 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | MAXXECUPRO-C1-L4 | MAXXECUPRO-C1-M4 | open (OL) | power ground must not touch +12 V supply | |
| 5 | MAXXECUPRO-C1-M4 | MAXXECUPRO-C1-G1 | 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
MAXXECUPRO-C1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | GPO 5 | — | W42 | — | 0.5 | OEM-A-31 | — | — | — |
| A2 | IGN 1 | — | W25 | — | 0.5 | OEM-A-8 | — | — | — |
| A3 | IGN 2 | — | W26 | — | 0.5 | OEM-A-60 | — | — | — |
| A4 | GPO 8/TACHO | — | W45 | — | 0.5 | OEM-A-22 | — | — | — |
| B1 | GPO 6 | — | W43 | — | 0.5 | OEM-A-5 | — | — | — |
| B2 | IGN 3 | — | W27 | — | 0.5 | OEM-A-52 | — | — | — |
| B3 | IGN 4 | — | — | — | — | — | — | — | — |
| B4 | GPO 1 | — | W38 | — | 0.5 | OEM-A-49 | — | — | — |
| C1 | GPO 7 | — | W44 | — | 0.5 | OEM-A-53 | — | — | — |
| C2 | IGN 5 | — | — | — | — | — | — | — | — |
| C3 | IGN 6 | — | — | — | — | — | — | — | — |
| C4 | GPO 2 | — | W39 | — | 0.5 | OEM-A-6 | — | — | — |
| D1 | WBO2 Heater- | — | — | — | — | — | — | — | — |
| D2 | IGN 7 | — | — | — | — | — | — | — | — |
| D3 | IGN 8 | — | — | — | — | — | — | — | — |
| D4 | GPO 3 | — | W40 | — | 0.5 | OEM-A-9 | — | — | — |
| E1 | CAN H | — | — | — | — | — | — | — | — |
| E2 | CAN L | — | — | — | — | — | — | — | — |
| E3 | GND Shield | — | — | — | — | — | — | — | — |
| E4 | GPO 4 | — | W41 | — | 0.5 | OEM-A-27 | — | — | — |
| F1 | CLT | — | W37 | — | 0.5 | OEM-A-14 | — | — | — |
| F2 | IAT | — | W49 | — | 0.5 | OEM-A-36 | — | — | — |
| F3 | WBO2 VREF | — | — | — | — | — | — | — | — |
| F4 | WBO2 VS | — | — | — | — | — | — | — | — |
| G1 | +5V sensor supply | — | W21 | — | 0.5 | OEM-A-41 | — | — | — |
| G2 | TPS/AIN | — | W36 | — | 0.5 | OEM-A-40 | — | — | — |
| G3 | WBO2 IP | — | — | — | — | — | — | — | — |
| G4 | WBO2 RCAL | — | — | — | — | — | — | — | — |
| H1 | Sensor GND | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| H2 | Trigger GND | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| H3 | TRIGGER | — | W22 | — | 0.5 | OEM-A-68 | — | — | — |
| H4 | HOME | — | W23 | — | 0.5 | OEM-A-44 | — | — | — |
| J1 | AIN 1 (temperature) | — | W48 | — | 0.5 | OEM-A-15 | — | — | — |
| J2 | AIN 2 (temperature) | — | — | — | — | — | — | — | — |
| J3 | AIN 3 (0-5V) | — | W35 | — | 0.5 | OEM-A-17 | — | — | — |
| J4 | AIN 4 (0-5V) | — | W47 | — | 0.5 | OEM-A-20 | — | — | — |
| K1 | INJ 1 | — | W28 | — | 0.5 | OEM-A-24 | — | — | — |
| K2 | INJ 2 | — | W29 | — | 0.5 | OEM-A-3 | — | — | — |
| K3 | DIN/VR 1 | — | W50 | — | 0.5 | OEM-A-65 | — | — | — |
| K4 | DIN/VR 2 | — | — | — | — | — | — | — | — |
| L1 | INJ 8 | — | — | — | — | — | — | — | — |
| L2 | INJ 7 | — | — | — | — | — | — | — | — |
| L3 | INJ 6 | — | W33 | — | 0.5 | OEM-A-2 | — | — | — |
| L4 | Engine GND | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJ 3 | — | W30 | — | 0.5 | OEM-A-26 | — | — | — |
| M2 | INJ 4 | — | W31 | — | 0.5 | OEM-A-4 | — | — | — |
| M3 | INJ 5 | — | W32 | — | 0.5 | OEM-A-25 | — | — | — |
| M4 | +12V ECU power supply | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECUPRO-C2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | EGT 1+ | — | — | — | — | — | — | — | — |
| A2 | EGT 2+ | — | — | — | — | — | — | — | — |
| A3 | EGT 3+ | — | — | — | — | — | — | — | — |
| A4 | EGT 4+ | — | — | — | — | — | — | — | — |
| B1 | EGT 1- | — | — | — | — | — | — | — | — |
| B2 | EGT 2- | — | — | — | — | — | — | — | — |
| B3 | EGT 3- | — | — | — | — | — | — | — | — |
| B4 | EGT 4- | — | — | — | — | — | — | — | — |
| C1 | EGT 5+ | — | — | — | — | — | — | — | — |
| C2 | EGT 6+ | — | — | — | — | — | — | — | — |
| C3 | EGT 7+ | — | — | — | — | — | — | — | — |
| C4 | EGT 8+ | — | — | — | — | — | — | — | — |
| D1 | EGT 5- | — | — | — | — | — | — | — | — |
| D2 | EGT 6- | — | — | — | — | — | — | — | — |
| D3 | EGT 7- | — | — | — | — | — | — | — | — |
| D4 | EGT 8- | — | — | — | — | — | — | — | — |
| E1 | EGT 9+ | — | — | — | — | — | — | — | — |
| E2 | EGT 10+ | — | — | — | — | — | — | — | — |
| E3 | EGT 11+ | — | — | — | — | — | — | — | — |
| E4 | EGT 12+ | — | — | — | — | — | — | — | — |
| F1 | EGT 9- | — | — | — | — | — | — | — | — |
| F2 | EGT 10- | — | — | — | — | — | — | — | — |
| F3 | EGT 11- | — | — | — | — | — | — | — | — |
| F4 | EGT 12- | — | — | — | — | — | — | — | — |
| H1 | Engine ground 3 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| H2 | Engine ground 3 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| H3 | Engine ground 3 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
MAXXECUPRO-C3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | DIN/VR 4 | — | — | — | — | — | — | — | — |
| A2 | DIN/VR 5 | — | — | — | — | — | — | — | — |
| A3 | DIN 6 (SWITCH) | — | W51 | — | 0.5 | OEM-A-37 | — | — | — |
| A4 | DIN 7 (SWITCH) | — | W52 | — | 0.5 | OEM-A-39 | — | — | — |
| B1 | WBO2 2 RCAL | — | — | — | — | — | — | — | — |
| B2 | WBO2 2 IP | — | — | — | — | — | — | — | — |
| B3 | WBO2 2 VS | — | — | — | — | — | — | — | — |
| B4 | WBO2 2 COM | — | — | — | — | — | — | — | — |
| C1 | WBO2 2 Shield | — | — | — | — | — | — | — | — |
| C2 | +5V SENSOR SUPPLY 2 | — | — | — | — | — | — | — | — |
| C3 | ANALOG IN 5 (0-5V) | — | — | — | — | — | — | — | — |
| C4 | GPO 19 (12V) | — | — | — | — | — | — | — | — |
| D1 | ANALOG IN 6 (0-5V) | — | — | — | — | — | — | — | — |
| D2 | ANALOG IN 7 (0-5V) | — | — | — | — | — | — | — | — |
| D3 | ANALOG IN 8 (0-5V) | — | — | — | — | — | — | — | — |
| D4 | GPO 20 (12V) | — | — | — | — | — | — | — | — |
| E1 | GPO 10/WBO2 2 HTR | — | — | — | — | — | — | — | — |
| E2 | ANALOG IN 9 (0-5V) | — | — | — | — | — | — | — | — |
| E3 | ANALOG IN 10 (0-5V) | — | — | — | — | — | — | — | — |
| E4 | GPO 21 (12V) | — | — | — | — | — | — | — | — |
| F1 | INJECTOR OUT 15 | — | — | — | — | — | — | — | — |
| F2 | ANALOG IN 11 (0-5V) | — | — | — | — | — | — | — | — |
| F3 | ANALOG IN 12 (0-5V) | — | — | — | — | — | — | — | — |
| F4 | GPO 22 (12V) | — | — | — | — | — | — | — | — |
| G1 | INJECTOR OUT 14 | — | — | — | — | — | — | — | — |
| G2 | IGNITION OUT 11 | — | — | — | — | — | — | — | — |
| G3 | IGNITION OUT 9 | — | — | — | — | — | — | — | — |
| G4 | GPO 15 (12V) | — | — | — | — | — | — | — | — |
| H1 | INJECTOR OUT 13 | — | — | — | — | — | — | — | — |
| H2 | IGNITION OUT 12 | — | — | — | — | — | — | — | — |
| H3 | IGNITION OUT 10 | — | — | — | — | — | — | — | — |
| H4 | GPO 16 (12V) | — | — | — | — | — | — | — | — |
| J1 | INJECTOR OUT 16 | — | — | — | — | — | — | — | — |
| J2 | SENSOR GND | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| J3 | SENSOR GND | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| J4 | GPO 17 (12V) | — | — | — | — | — | — | — | — |
| K1 | INJECTOR OUT 10 | — | — | — | — | — | — | — | — |
| K2 | INJECTOR OUT 9 | — | — | — | — | — | — | — | — |
| K3 | KEY IN 12V | — | W34 | — | 0.5 | OEM-A-38 | — | — | — |
| K4 | GPO 18 (12V) | — | — | — | — | — | — | — | — |
| L1 | INJECTOR OUT 11 | — | — | — | — | — | — | — | — |
| L2 | GPO 12/MOTOR 1 + | — | — | — | — | — | — | — | — |
| L3 | GPO 11/MOTOR 1 - | — | — | — | — | — | — | — | — |
| L4 | ENGINE GROUND 2 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| M1 | INJECTOR OUT 12 | — | — | — | — | — | — | — | — |
| M2 | GPO 13/MOTOR 2 + | — | — | — | — | — | — | — | — |
| M3 | GPO 14/MOTOR 2 - | — | — | — | — | — | — | — | — |
| M4 | 12V ECU 2 | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
MAXXECUPRO-C4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A1 | CAN 2 H | — | — | — | — | — | — | — | — |
| A2 | CAN 2 L | — | — | — | — | — | — | — | — |
| A3 | 0-5V out 1 | — | — | — | — | — | — | — | — |
| A4 | 0-5V out 2 | — | — | — | — | — | — | — | — |
| B1 | AIN 18 (0-5V) | — | — | — | — | — | — | — | — |
| B2 | AIN 17 (0-5V) | — | — | — | — | — | — | — | — |
| B3 | AIN 16 (0-5V) | — | — | — | — | — | — | — | — |
| B4 | AIN 15 (0-5V) | — | — | — | — | — | — | — | — |
| C1 | AIN 14 (0-5V) | — | — | — | — | — | — | — | — |
| C2 | AIN 13 (0-5V) | — | — | — | — | — | — | — | — |
| C3 | AIN 19 (temp) | — | — | — | — | — | — | — | — |
| C4 | AIN 20 (temp) | — | — | — | — | — | — | — | — |
| D1 | AIN 21 (temp) | — | — | — | — | — | — | — | — |
| D2 | AIN 22 (temp) | — | — | — | — | — | — | — | — |
| D3 | DIN 8 (switch) | — | — | — | — | — | — | — | — |
| D4 | DIN 9 (switch) | — | — | — | — | — | — | — | — |
| E1 | DIN 10 (switch) | — | — | — | — | — | — | — | — |
| E2 | DIN 11 (switch) | — | — | — | — | — | — | — | — |
| E3 | +5V sensor supply 3 | — | — | — | — | — | — | — | — |
| E4 | 5-10V sensor supply | — | — | — | — | — | — | — | — |
| F1 | GPO 23-30 flyback | — | — | — | — | — | — | — | — |
| F2 | Knock 1 | — | W24 | — | 0.5 | OEM-A-34 | — | — | — |
| F3 | Knock 2 | — | — | — | — | — | — | — | — |
| F4 | Sensor GND3 / knock ground | — | — | — | — | — | — | — | — |
| G1 | GPO 23 | — | W46 | — | 0.5 | OEM-A-51 | — | — | — |
| G2 | GPO 24 | — | — | — | — | — | — | — | — |
| G3 | GPO 25 | — | — | — | — | — | — | — | — |
| G4 | GPO 26 | — | — | — | — | — | — | — | — |
| H1 | GPO 27 | — | — | — | — | — | — | — | — |
| H2 | GPO 28 | — | — | — | — | — | — | — | — |
| H3 | GPO 29 | — | — | — | — | — | — | — | — |
| H4 | GPO 30 | — | — | — | — | — | — | — | — |
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) | — | W37 | — | 0.5 | MAXXECUPRO-C1-F1 | — | — | — |
| 15 | EGR temperature sensor | — | W48 | — | 0.5 | MAXXECUPRO-C1-J1 | — | — | — |
| 16 | MAF ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | MAF signal | — | W35 | — | 0.5 | MAXXECUPRO-C1-J3 | — | — | — |
| 2 | Injector 6 (cyl 6) | — | W33 | — | 0.5 | MAXXECUPRO-C1-L3 | — | — | — |
| 20 | O2 sensor 1 (primary) | — | W47 | — | 0.5 | MAXXECUPRO-C1-J4 | — | — | — |
| 21 | Diagnostic L-line | — | — | — | — | — | — | — | — |
| 22 | Tachometer output | — | W45 | — | 0.5 | MAXXECUPRO-C1-A4 | — | — | — |
| 23 | ECU main power (from engine-electronics relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | Injector 1 (cyl 1) | — | W28 | — | 0.5 | MAXXECUPRO-C1-K1 | — | — | — |
| 25 | Injector 5 (cyl 5) | — | W32 | — | 0.5 | MAXXECUPRO-C1-M3 | — | — | — |
| 26 | Injector 3 (cyl 3) | — | W30 | — | 0.5 | MAXXECUPRO-C1-M1 | — | — | — |
| 27 | Idle air control valve | — | W41 | — | 0.5 | MAXXECUPRO-C1-E4 | — | — | — |
| 3 | Injector 2 (cyl 2) | — | W29 | — | 0.5 | MAXXECUPRO-C1-K2 | — | — | — |
| 31 | EVAP canister purge valve | — | W42 | — | 0.5 | MAXXECUPRO-C1-A1 | — | — | — |
| 33 | Sensor ground bus | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Knock sensor 1 | — | W24 | — | 0.5 | MAXXECUPRO-C4-F2 | — | — | — |
| 36 | Intake air temperature (IAT) | — | W49 | — | 0.5 | MAXXECUPRO-C1-F2 | — | — | — |
| 37 | A/C compressor switch | — | W51 | — | 0.5 | MAXXECUPRO-C3-A3 | — | — | — |
| 38 | Ignition switch (run/start) | — | W34 | — | 0.5 | MAXXECUPRO-C3-K3 | — | — | — |
| 39 | A/C switch (cabin) | — | W52 | — | 0.5 | MAXXECUPRO-C3-A4 | — | — | — |
| 4 | Injector 4 (cyl 4) | — | W31 | — | 0.5 | MAXXECUPRO-C1-M2 | — | — | — |
| 40 | Throttle position sensor 1 | — | W36 | — | 0.5 | MAXXECUPRO-C1-G2 | — | — | — |
| 41 | TPS power (+5V) | — | W21 | — | 0.5 | MAXXECUPRO-C1-G1 | — | — | — |
| 43 | Diagnostic K-line | — | — | — | — | — | — | — | — |
| 44 | Camshaft position sensor (G40) | — | W23 | — | 0.5 | MAXXECUPRO-C1-H4 | — | — | — |
| 49 | Secondary air injection relay control | — | W38 | — | 0.5 | MAXXECUPRO-C1-B4 | — | — | — |
| 5 | Check engine light (MIL) | — | W43 | — | 0.5 | MAXXECUPRO-C1-B1 | — | — | — |
| 51 | MFA fuel-consumption signal | — | W46 | — | 0.5 | MAXXECUPRO-C4-G1 | — | — | — |
| 52 | Ignition coil 4 (coil pack pin 4) | — | W27 | — | 0.5 | MAXXECUPRO-C1-B2 | — | — | — |
| 53 | Idle air control valve (2nd) | — | W44 | — | 0.5 | MAXXECUPRO-C1-C1 | — | — | — |
| 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 | — | W39 | — | 0.5 | MAXXECUPRO-C1-C4 | — | — | — |
| 60 | Ignition coil 3 (coil pack pin 3) | — | W26 | — | 0.5 | MAXXECUPRO-C1-A3 | — | — | — |
| 65 | Vehicle speed sensor (VSS) | — | W50 | — | 0.5 | MAXXECUPRO-C1-K3 | — | — | — |
| 67 | Crank sensor return (VR-) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 68 | Crank position sensor (G28, VR+) | — | W22 | — | 0.5 | MAXXECUPRO-C1-H3 | — | — | — |
| 7 | Ground (E-2) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Ignition coil 2 (coil pack pin 2) | — | W25 | — | 0.5 | MAXXECUPRO-C1-A2 | — | — | — |
| 9 | Engine electronics relay control | — | W40 | — | 0.5 | MAXXECUPRO-C1-D4 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-A-16 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-A-33 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-A-67 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | MAXXECUPRO-C1-H1 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | MAXXECUPRO-C1-H2 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | MAXXECUPRO-C3-J2 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | MAXXECUPRO-C3-J3 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | MAXXECUPRO-C1-M4 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | MAXXECUPRO-C3-M4 | — | — | — |
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 | MAXXECUPRO-C1-L4 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | MAXXECUPRO-C2-H1 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | MAXXECUPRO-C2-H2 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | MAXXECUPRO-C2-H3 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | MAXXECUPRO-C3-L4 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Ground (E-1) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-A-10 | Ground (OBD1 EGR enable) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-A-14 | Coolant temperature (CLT) | temp_in | MAXXECUPRO-C1-F1 | CLT | temp_in | single_source | |
| OEM-A-15 | EGR temperature sensor | temp_in | MAXXECUPRO-C1-J1 | AIN 1 (temperature) | temp_in | single_source | |
| OEM-A-16 | MAF ground | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-17 | MAF signal | analog_in | MAXXECUPRO-C1-J3 | AIN 3 (0-5V) | analog_in | single_source | |
| OEM-A-2 | Injector 6 (cyl 6) | injector_out | MAXXECUPRO-C1-L3 | INJ 6 | injector_out | single_source | |
| OEM-A-20 | O2 sensor 1 (primary) | lambda_nb_in | MAXXECUPRO-C1-J4 | AIN 4 (0-5V) | analog_in | single_source | |
| OEM-A-21 | Diagnostic L-line | serial | — | — | — | single_source | |
| OEM-A-22 | Tachometer output | tacho_out | MAXXECUPRO-C1-A4 | GPO 8/TACHO | low_side_out | single_source | |
| OEM-A-23 | ECU main power (from engine-electronics relay) | power_in | MAXXECUPRO-C1-M4 + MAXXECUPRO-C3-M4 | +12V ECU power supply + 12V ECU 2 | power_in | single_source | |
| OEM-A-24 | Injector 1 (cyl 1) | injector_out | MAXXECUPRO-C1-K1 | INJ 1 | injector_out | single_source | |
| OEM-A-25 | Injector 5 (cyl 5) | injector_out | MAXXECUPRO-C1-M3 | INJ 5 | injector_out | single_source | |
| OEM-A-26 | Injector 3 (cyl 3) | injector_out | MAXXECUPRO-C1-M1 | INJ 3 | injector_out | single_source | |
| OEM-A-27 | Idle air control valve | low_side_out | MAXXECUPRO-C1-E4 | GPO 4 | low_side_out | single_source | |
| OEM-A-3 | Injector 2 (cyl 2) | injector_out | MAXXECUPRO-C1-K2 | INJ 2 | injector_out | single_source | |
| OEM-A-31 | EVAP canister purge valve | low_side_out | MAXXECUPRO-C1-A1 | GPO 5 | low_side_out | single_source | |
| OEM-A-33 | Sensor ground bus | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-34 | Knock sensor 1 | knock_in | MAXXECUPRO-C4-F2 | Knock 1 | knock_in | single_source | |
| OEM-A-36 | Intake air temperature (IAT) | temp_in | MAXXECUPRO-C1-F2 | IAT | temp_in | single_source | |
| OEM-A-37 | A/C compressor switch | digital_in | MAXXECUPRO-C3-A3 | DIN 6 (SWITCH) | digital_in | single_source | |
| OEM-A-38 | Ignition switch (run/start) | digital_in | MAXXECUPRO-C3-K3 | KEY IN 12V | digital_in | single_source | |
| OEM-A-39 | A/C switch (cabin) | digital_in | MAXXECUPRO-C3-A4 | DIN 7 (SWITCH) | digital_in | single_source | |
| OEM-A-4 | Injector 4 (cyl 4) | injector_out | MAXXECUPRO-C1-M2 | INJ 4 | injector_out | single_source | |
| OEM-A-40 | Throttle position sensor 1 | analog_in | MAXXECUPRO-C1-G2 | TPS/AIN | analog_in | single_source | |
| OEM-A-41 | TPS power (+5V) | vref | MAXXECUPRO-C1-G1 | +5V sensor supply | vref | single_source | |
| OEM-A-43 | Diagnostic K-line | serial | — | — | — | single_source | |
| OEM-A-44 | Camshaft position sensor (G40) | trigger_in | MAXXECUPRO-C1-H4 | HOME | trigger_in | single_source | |
| OEM-A-49 | Secondary air injection relay control | low_side_out | MAXXECUPRO-C1-B4 | GPO 1 | low_side_out | single_source | |
| OEM-A-5 | Check engine light (MIL) | low_side_out | MAXXECUPRO-C1-B1 | GPO 6 | low_side_out | single_source | |
| OEM-A-51 | MFA fuel-consumption signal | tacho_out | MAXXECUPRO-C4-G1 | GPO 23 | low_side_out | single_source | |
| OEM-A-52 | Ignition coil 4 (coil pack pin 4) | ignition_out | MAXXECUPRO-C1-B2 | IGN 3 | ignition_out | single_source | |
| OEM-A-53 | Idle air control valve (2nd) | low_side_out | MAXXECUPRO-C1-C1 | GPO 7 | low_side_out | single_source | |
| OEM-A-54 | Battery constant (+12V) | power_in | — | — | — | single_source | |
| OEM-A-55 | Ground (E-3) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-A-56 | Ground (E-4) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | 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 | MAXXECUPRO-C1-C4 | GPO 2 | low_side_out | single_source | |
| OEM-A-60 | Ignition coil 3 (coil pack pin 3) | ignition_out | MAXXECUPRO-C1-A3 | IGN 2 | ignition_out | single_source | |
| OEM-A-65 | Vehicle speed sensor (VSS) | digital_in | MAXXECUPRO-C1-K3 | DIN/VR 1 | digital_in | single_source | |
| OEM-A-67 | Crank sensor return (VR-) | sensor_ground | MAXXECUPRO-C1-H1 + MAXXECUPRO-C1-H2 + MAXXECUPRO-C3-J2 + MAXXECUPRO-C3-J3 | Sensor GND + Trigger GND + SENSOR GND + SENSOR GND | sensor_ground | single_source | |
| OEM-A-68 | Crank position sensor (G28, VR+) | trigger_in | MAXXECUPRO-C1-H3 | TRIGGER | trigger_in | single_source | |
| OEM-A-7 | Ground (E-2) | ground | MAXXECUPRO-C1-L4 + MAXXECUPRO-C2-H1 + MAXXECUPRO-C2-H2 + MAXXECUPRO-C2-H3 + MAXXECUPRO-C3-L4 | Engine GND + Engine ground 3 + Engine ground 3 + Engine ground 3 + ENGINE GROUND 2 | ground | single_source | |
| OEM-A-8 | Ignition coil 2 (coil pack pin 2) | ignition_out | MAXXECUPRO-C1-A2 | IGN 1 | ignition_out | single_source | |
| OEM-A-9 | Engine electronics relay control | low_side_out | MAXXECUPRO-C1-D4 | GPO 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 | MAXXECUPRO-C1-M4 | 0.85 | no route | +12V ECU power supply | — | |
| W3 | SP-14V-1 | MAXXECUPRO-C3-M4 | 0.85 | no route | 12V ECU 2 | — | |
| 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 | MAXXECUPRO-C1-L4 | 0.85 | no route | Engine GND | — | |
| W10 | SP-GND-1 | MAXXECUPRO-C2-H1 | 0.85 | no route | Engine ground 3 | — | |
| W11 | SP-GND-1 | MAXXECUPRO-C2-H2 | 0.85 | no route | Engine ground 3 | — | |
| W12 | SP-GND-1 | MAXXECUPRO-C2-H3 | 0.85 | no route | Engine ground 3 | — | |
| W13 | SP-GND-1 | MAXXECUPRO-C3-L4 | 0.85 | no route | ENGINE GROUND 2 | — | |
| W14 | OEM-A-16 | SP-0V-1 | 0.5 | no route | MAF ground | — | |
| W15 | OEM-A-33 | SP-0V-1 | 0.5 | no route | Sensor ground bus | — | |
| W16 | OEM-A-67 | SP-0V-1 | 0.5 | no route | Crank sensor return (VR-) | — | |
| W17 | SP-0V-1 | MAXXECUPRO-C1-H1 | 0.5 | no route | Sensor GND | — | |
| W18 | SP-0V-1 | MAXXECUPRO-C1-H2 | 0.5 | no route | Trigger GND | — | |
| W19 | SP-0V-1 | MAXXECUPRO-C3-J2 | 0.5 | no route | SENSOR GND | — | |
| W20 | SP-0V-1 | MAXXECUPRO-C3-J3 | 0.5 | no route | SENSOR GND | — | |
| W21 | OEM-A-41 | MAXXECUPRO-C1-G1 | 0.5 | no route | TPS power (+5V) | — | |
| W22 | OEM-A-68 | MAXXECUPRO-C1-H3 | 0.5 | no route | Crank position sensor (G28, VR+) | — | |
| W23 | OEM-A-44 | MAXXECUPRO-C1-H4 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W24 | OEM-A-34 | MAXXECUPRO-C4-F2 | 0.5 | no route | Knock sensor 1 | — | |
| W25 | OEM-A-8 | MAXXECUPRO-C1-A2 | 0.5 | no route | Ignition coil 2 (coil pack pin 2) | — | |
| W26 | OEM-A-60 | MAXXECUPRO-C1-A3 | 0.5 | no route | Ignition coil 3 (coil pack pin 3) | — | |
| W27 | OEM-A-52 | MAXXECUPRO-C1-B2 | 0.5 | no route | Ignition coil 4 (coil pack pin 4) | — | |
| W28 | OEM-A-24 | MAXXECUPRO-C1-K1 | 0.5 | no route | Injector 1 (cyl 1) | — | |
| W29 | OEM-A-3 | MAXXECUPRO-C1-K2 | 0.5 | no route | Injector 2 (cyl 2) | — | |
| W30 | OEM-A-26 | MAXXECUPRO-C1-M1 | 0.5 | no route | Injector 3 (cyl 3) | — | |
| W31 | OEM-A-4 | MAXXECUPRO-C1-M2 | 0.5 | no route | Injector 4 (cyl 4) | — | |
| W32 | OEM-A-25 | MAXXECUPRO-C1-M3 | 0.5 | no route | Injector 5 (cyl 5) | — | |
| W33 | OEM-A-2 | MAXXECUPRO-C1-L3 | 0.5 | no route | Injector 6 (cyl 6) | — | |
| W34 | OEM-A-38 | MAXXECUPRO-C3-K3 | 0.5 | no route | Ignition switch (run/start) | — | |
| W35 | OEM-A-17 | MAXXECUPRO-C1-J3 | 0.5 | no route | MAF signal | — | |
| W36 | OEM-A-40 | MAXXECUPRO-C1-G2 | 0.5 | no route | Throttle position sensor 1 | — | |
| W37 | OEM-A-14 | MAXXECUPRO-C1-F1 | 0.5 | no route | Coolant temperature (CLT) | — | |
| W38 | OEM-A-49 | MAXXECUPRO-C1-B4 | 0.5 | no route | Secondary air injection relay control | — | |
| W39 | OEM-A-6 | MAXXECUPRO-C1-C4 | 0.5 | no route | Fuel pump relay control | — | |
| W40 | OEM-A-9 | MAXXECUPRO-C1-D4 | 0.5 | no route | Engine electronics relay control | — | |
| W41 | OEM-A-27 | MAXXECUPRO-C1-E4 | 0.5 | no route | Idle air control valve | — | |
| W42 | OEM-A-31 | MAXXECUPRO-C1-A1 | 0.5 | no route | EVAP canister purge valve | — | |
| W43 | OEM-A-5 | MAXXECUPRO-C1-B1 | 0.5 | no route | Check engine light (MIL) | — | |
| W44 | OEM-A-53 | MAXXECUPRO-C1-C1 | 0.5 | no route | Idle air control valve (2nd) | — | |
| W45 | OEM-A-22 | MAXXECUPRO-C1-A4 | 0.5 | no route | Tachometer output | — | |
| W46 | OEM-A-51 | MAXXECUPRO-C4-G1 | 0.5 | no route | MFA fuel-consumption signal | — | |
| W47 | OEM-A-20 | MAXXECUPRO-C1-J4 | 0.5 | no route | O2 sensor 1 (primary) | — | |
| W48 | OEM-A-15 | MAXXECUPRO-C1-J1 | 0.5 | no route | EGR temperature sensor | — | |
| W49 | OEM-A-36 | MAXXECUPRO-C1-F2 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W50 | OEM-A-65 | MAXXECUPRO-C1-K3 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W51 | OEM-A-37 | MAXXECUPRO-C3-A3 | 0.5 | no route | A/C compressor switch | — | |
| W52 | OEM-A-39 | MAXXECUPRO-C3-A4 | 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 (6)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-B4 | MAXXECUPRO-C1-B4 "GPO 1" drives OEM-A-49 Secondary air injection relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| warn | LOAD_UNKNOWN | MAXXECUPRO-C1-C4 | MAXXECUPRO-C1-C4 "GPO 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 | MAXXECUPRO-C1-D4 | MAXXECUPRO-C1-D4 "GPO 3" drives OEM-A-9 Engine electronics relay control (load 0.2 A) but its current rating is unknown. Check the ECU manual. |
| info | NET_FAMILY | OEM-A-22 ↔ MAXXECUPRO-C1-A4 | OEM-A-22 "Tachometer output" [tacho_out] is wired to MAXXECUPRO-C1-A4 "GPO 8/TACHO" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| info | NET_FAMILY | OEM-A-51 ↔ MAXXECUPRO-C4-G1 | OEM-A-51 "MFA fuel-consumption signal" [tacho_out] is wired to MAXXECUPRO-C4-G1 "GPO 23" [low_side_out]. Tacho as a low-side output: check the tach needs a pull-up. |
| 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 (No named VR6 pattern; 60-2 + hall cam via generic Missing-tooth + cam.) 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-A 54: Battery constant (+12V): MaxxECU MaxxECU PRO has no battery-constant input; not needed - OEM-A 21: Diagnostic L-line: no free k_line on MaxxECU MaxxECU PRO - OEM-A 43: Diagnostic K-line: no free k_line on MaxxECU MaxxECU PRO - 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 | MaxxECU GEN1 pinout (MINI / STREET / SPORT / V1 / RACE / PRO) | http://www.maxxecu.com/webhelp/wirings-maxxecu_pinout.html | archive | 2026-10-05 | 2e37b6814690 |
| 2 | community_copy | a2resource: VR6/ABA Motronic M2.9 (OBD1) engine control unit pinout | http://www.a2resource.com/electrical/management/motronicvr6aba.html | — | — | — |