VW Golf/Jetta Mk2 1.8 8v Digifant II → MoTeC M150 13150 (auto)
VW Golf/Jetta Mk2 1.8 8v Digifant II — MoTeC — M150
⚠ 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 | 1: read the Findings page before cutting any wire |
| Size of the job | 34 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-14 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | M150-B-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | M150-B-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | M150-C-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-13 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-19 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | SP-GND-1 | M150-A-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | SP-GND-1 | M150-A-25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | M150-A-32 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | M150-C-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | M150-C-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | OEM-A-5 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | OEM-A-6 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-0V-1 | M150-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-0V-1 | M150-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | M150-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | M150-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | SP-0V-1 | M150-D-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | M150-D-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-A-17 | M150-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-18 | M150-D-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-4 | M150-D-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-25 | M150-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-12 | M150-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-3 | M150-C-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-21 | M150-C-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-10 | M150-D-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-22 | M150-C-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-23 | M150-B-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-2 | M150-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-9 | M150-D-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-1 | M150-A-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-11 | M150-A-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-16 | M150-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | M150-A-10 | M150-A-26 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | M150-B-13 | M150-A-26 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | M150-A-24 | M150-A-10 | open (OL) | power ground must not touch 5 V sensor reference | |
| 4 | M150-A-24 | M150-B-13 | open (OL) | power ground must not touch +12 V supply | |
| 5 | M150-B-13 | M150-A-10 | 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
M150-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Analogue Temperature Input 5 | — | — | — | — | — | — | — | — |
| 10 | Sensor 5.0V C1 | — | W20 | — | 0.5 | OEM-A-17 | — | — | — |
| 11 | Lambda Narrow Input 1 | — | W30 | — | 0.5 | OEM-A-2 | — | — | — |
| 12 | Lambda Narrow Input 2 | — | — | — | — | — | — | — | — |
| 13 | Knock Input 3 | — | — | — | — | — | — | — | — |
| 14 | Knock Input 4 | — | — | — | — | — | — | — | — |
| 15 | Digital Input 2 | — | W33 | — | 0.5 | OEM-A-11 | — | — | — |
| 16 | Digital Input 3 | — | W34 | — | 0.5 | OEM-A-16 | — | — | — |
| 17 | Digital Input 4 | — | — | — | — | — | — | — | — |
| 18 | Sensor 5.0V C2 | — | — | — | — | — | — | — | — |
| 19 | Sensor 5.0V B2 | — | — | — | — | — | — | — | — |
| 2 | Analogue Temperature Input 6 | — | — | — | — | — | — | — | — |
| 20 | LIN Bus | — | — | — | — | — | — | — | — |
| 21 | RS232 Receive | — | — | — | — | — | — | — | — |
| 22 | RS232 Transmit | — | — | — | — | — | — | — | — |
| 23 | Digital Input 1 | — | W32 | — | 0.5 | OEM-A-1 | — | — | — |
| 24 | Battery Negative 3 | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Battery Negative 4 | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 26 | Sensor 0V C1 | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 27 | Sensor 0V C2 | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | CAN Bus 3 High | — | — | — | — | — | — | — | — |
| 29 | CAN Bus 3 Low | — | — | — | — | — | — | — | — |
| 3 | Analogue Voltage Input 15 | — | — | — | — | — | — | — | — |
| 30 | CAN Bus 2 High | — | — | — | — | — | — | — | — |
| 31 | CAN Bus 2 Low | — | — | — | — | — | — | — | — |
| 32 | Battery Negative 5 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 33 | Sensor 0V B1 | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Sensor 0V A1 | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 4 | Analogue Voltage Input 16 | — | — | — | — | — | — | — | — |
| 5 | Analogue Voltage Input 17 | — | — | — | — | — | — | — | — |
| 6 | Low Side Ignition 9 | — | — | — | — | — | — | — | — |
| 7 | Low Side Ignition 10 | — | — | — | — | — | — | — | — |
| 8 | Low Side Ignition 11 | — | — | — | — | — | — | — | — |
| 9 | Low Side Ignition 12 | — | — | — | — | — | — | — | — |
M150-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Half Bridge Output 9 | — | — | — | — | — | — | — | — |
| 10 | Analogue Voltage Input 9 | — | — | — | — | — | — | — | — |
| 11 | Analogue Voltage Input 10 | — | — | — | — | — | — | — | — |
| 12 | Analogue Voltage Input 11 | — | — | — | — | — | — | — | — |
| 13 | Battery Positive | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 14 | Low Side Injector 6 | — | — | — | — | — | — | — | — |
| 15 | Low Side Injector 4 | — | — | — | — | — | — | — | — |
| 16 | Analogue Voltage Input 12 | — | — | — | — | — | — | — | — |
| 17 | Analogue Voltage Input 13 | — | — | — | — | — | — | — | — |
| 18 | Analogue Voltage Input 14 | — | — | — | — | — | — | — | — |
| 19 | Battery Positive | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | Half Bridge Output 10 | — | — | — | — | — | — | — | — |
| 20 | Half Bridge Output 7 | — | — | — | — | — | — | — | — |
| 21 | Half Bridge Output 8 | — | — | — | — | — | — | — | — |
| 22 | Peak Hold Injector 9 | — | — | — | — | — | — | — | — |
| 23 | Peak Hold Injector 10 | — | — | — | — | — | — | — | — |
| 24 | Peak Hold Injector 11 | — | — | — | — | — | — | — | — |
| 25 | Peak Hold Injector 12 | — | — | — | — | — | — | — | — |
| 26 | Sensor 5.0V A | — | — | — | — | — | — | — | — |
| 3 | Universal Digital Input 8 | — | — | — | — | — | — | — | — |
| 4 | Universal Digital Input 9 | — | — | — | — | — | — | — | — |
| 5 | Universal Digital Input 10 | — | — | — | — | — | — | — | — |
| 6 | Universal Digital Input 11 | — | — | — | — | — | — | — | — |
| 7 | Universal Digital Input 12 | — | — | — | — | — | — | — | — |
| 8 | Low Side Injector 5 | — | — | — | — | — | — | — | — |
| 9 | Low Side Injector 3 | — | W29 | — | 0.5 | OEM-A-23 | — | — | — |
M150-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Half Bridge Output 2 | — | — | — | — | — | — | — | — |
| 10 | Battery Negative 1 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Battery Negative 2 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | Low Side Ignition 7 | — | — | — | — | — | — | — | — |
| 13 | Low Side Ignition 8 | — | — | — | — | — | — | — | — |
| 14 | Analogue Voltage Input 1 | — | W26 | — | 0.5 | OEM-A-21 | — | — | — |
| 15 | Analogue Voltage Input 2 | — | — | — | — | — | — | — | — |
| 16 | Analogue Voltage Input 3 | — | — | — | — | — | — | — | — |
| 17 | Analogue Voltage Input 4 | — | — | — | — | — | — | — | — |
| 18 | Half Bridge Output 1 | — | — | — | — | — | — | — | — |
| 19 | Peak Hold Injector 1 | — | W24 | — | 0.5 | OEM-A-12 | — | — | — |
| 2 | Sensor 5.0V A | — | — | — | — | — | — | — | — |
| 20 | Peak Hold Injector 2 | — | — | — | — | — | — | — | — |
| 21 | Peak Hold Injector 3 | — | — | — | — | — | — | — | — |
| 22 | Peak Hold Injector 4 | — | — | — | — | — | — | — | — |
| 23 | Low Side Injector 1 | — | W25 | — | 0.5 | OEM-A-3 | — | — | — |
| 24 | Low Side Injector 2 | — | W28 | — | 0.5 | OEM-A-22 | — | — | — |
| 25 | Analogue Voltage Input 5 | — | — | — | — | — | — | — | — |
| 26 | Battery Positive | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | Peak Hold Injector 5 | — | — | — | — | — | — | — | — |
| 28 | Peak Hold Injector 6 | — | — | — | — | — | — | — | — |
| 29 | Peak Hold Injector 7 | — | — | — | — | — | — | — | — |
| 3 | Low Side Ignition 1 | — | W23 | — | 0.5 | OEM-A-25 | — | — | — |
| 30 | Peak Hold Injector 8 | — | — | — | — | — | — | — | — |
| 31 | Half Bridge Output 3 | — | — | — | — | — | — | — | — |
| 32 | Half Bridge Output 4 | — | — | — | — | — | — | — | — |
| 33 | Half Bridge Output 5 | — | — | — | — | — | — | — | — |
| 34 | Half Bridge Output 6 | — | — | — | — | — | — | — | — |
| 4 | Low Side Ignition 2 | — | — | — | — | — | — | — | — |
| 5 | Low Side Ignition 3 | — | — | — | — | — | — | — | — |
| 6 | Low Side Ignition 4 | — | — | — | — | — | — | — | — |
| 7 | Low Side Ignition 5 | — | — | — | — | — | — | — | — |
| 8 | Low Side Ignition 6 | — | — | — | — | — | — | — | — |
| 9 | Sensor 5.0V B | — | — | — | — | — | — | — | — |
M150-D
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Universal Digital Input 1 | — | W21 | — | 0.5 | OEM-A-18 | — | — | — |
| 10 | Universal Digital Input 5 | — | — | — | — | — | — | — | — |
| 11 | Universal Digital Input 6 | — | — | — | — | — | — | — | — |
| 12 | Battery Backup | — | — | — | — | — | — | — | — |
| 13 | Knock Input 2 | — | — | — | — | — | — | — | — |
| 14 | Universal Digital Input 7 | — | — | — | — | — | — | — | — |
| 15 | Sensor 0V A | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Sensor 0V B | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | CAN Bus 1 High | — | — | — | — | — | — | — | — |
| 18 | CAN Bus 1 Low | — | — | — | — | — | — | — | — |
| 19 | Sensor 6.3V | — | — | — | — | — | — | — | — |
| 2 | Universal Digital Input 2 | — | — | — | — | — | — | — | — |
| 20 | Analogue Voltage Input 6 | — | — | — | — | — | — | — | — |
| 21 | Analogue Voltage Input 7 | — | — | — | — | — | — | — | — |
| 22 | Analogue Voltage Input 8 | — | — | — | — | — | — | — | — |
| 23 | Ethernet Transmit + | — | — | — | — | — | — | — | — |
| 24 | Ethernet Transmit - | — | — | — | — | — | — | — | — |
| 25 | Ethernet Receive + | — | — | — | — | — | — | — | — |
| 26 | Ethernet Receive - | — | — | — | — | — | — | — | — |
| 3 | Analogue Temperature Input 1 | — | W27 | — | 0.5 | OEM-A-10 | — | — | — |
| 4 | Analogue Temperature Input 2 | — | W31 | — | 0.5 | OEM-A-9 | — | — | — |
| 5 | Analogue Temperature Input 3 | — | — | — | — | — | — | — | — |
| 6 | Analogue Temperature Input 4 | — | — | — | — | — | — | — | — |
| 7 | Knock Input 1 | — | W22 | — | 0.5 | OEM-A-4 | — | — | — |
| 8 | Universal Digital Input 3 | — | — | — | — | — | — | — | — |
| 9 | Universal Digital Input 4 | — | — | — | — | — | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Starter signal (term 50) | — | W32 | — | 0.5 | M150-A-23 | — | — | — |
| 10 | Coolant temperature sensor | — | W27 | — | 0.5 | M150-D-3 | — | — | — |
| 11 | Idle/WOT throttle switch | — | W33 | — | 0.5 | M150-A-15 | — | — | — |
| 12 | Injector driver (batch, all 4) | — | W24 | — | 0.5 | M150-C-19 | — | — | — |
| 13 | Ground | — | W5 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | ECU power (control-unit relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 16 | A/C compressor signal | — | W34 | — | 0.5 | M150-A-16 | — | — | — |
| 17 | AFM potentiometer supply | — | W20 | — | 0.5 | M150-A-10 | — | — | — |
| 18 | Hall sender signal (engine speed) | — | W21 | — | 0.5 | M150-D-1 | — | — | — |
| 19 | Ground | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Oxygen (lambda) sensor signal | — | W30 | — | 0.5 | M150-A-11 | — | — | — |
| 21 | AFM signal | — | W26 | — | 0.5 | M150-C-14 | — | — | — |
| 22 | Idle stabilizer valve coil 1 | — | W28 | — | 0.5 | M150-C-24 | — | — | — |
| 23 | Idle stabilizer valve coil 2 | — | W29 | — | 0.5 | M150-B-9 | — | — | — |
| 25 | Ignition timing signal to TCI | — | W23 | — | 0.5 | M150-C-3 | — | — | — |
| 3 | Fuel pump relay control | — | W25 | — | 0.5 | M150-C-23 | — | — | — |
| 4 | Knock sensor signal | — | W22 | — | 0.5 | M150-D-7 | — | — | — |
| 5 | Knock sensor return | — | W12 | — | 0.5 | SP-0V-1 | — | — | — |
| 6 | Sensor ground (CTS/Hall/AFM/throttle) | — | W13 | — | 0.5 | SP-0V-1 | — | — | — |
| 7 | Knock sensor shield | — | — | — | — | — | — | — | — |
| 8 | Hall sender supply (distributor) | — | — | — | — | — | — | — | — |
| 9 | Intake air temperature sensor | — | W31 | — | 0.5 | M150-D-4 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W12 | — | 0.5 | OEM-A-5 | — | — | — |
| 1 | — | — | W13 | — | 0.5 | OEM-A-6 | — | — | — |
| 1 | — | — | W14 | — | 0.5 | M150-A-26 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | M150-A-27 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | M150-A-33 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | M150-A-34 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | M150-D-15 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | M150-D-16 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-14 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | M150-B-13 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | M150-B-19 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | M150-C-26 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W5 | — | 0.85 | OEM-A-13 | — | — | — |
| 1 | — | — | W6 | — | 0.85 | OEM-A-19 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | M150-A-24 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | M150-A-25 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | M150-A-32 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | M150-C-10 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | M150-C-11 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Starter signal (term 50) | digital_in | M150-A-23 | Digital Input 1 | digital_in | corroborated | |
| OEM-A-10 | Coolant temperature sensor | temp_in | M150-D-3 | Analogue Temperature Input 1 | temp_in | corroborated | |
| OEM-A-11 | Idle/WOT throttle switch | digital_in | M150-A-15 | Digital Input 2 | digital_in | corroborated | |
| OEM-A-12 | Injector driver (batch, all 4) | injector_out | M150-C-19 | Peak Hold Injector 1 | injector_out | corroborated | |
| OEM-A-13 | Ground | ground | M150-A-24 + M150-A-25 + M150-A-32 + M150-C-10 + M150-C-11 | Battery Negative 3 + Battery Negative 4 + Battery Negative 5 + Battery Negative 1 + Battery Negative 2 | ground | corroborated | |
| OEM-A-14 | ECU power (control-unit relay) | power_in | M150-B-13 + M150-B-19 + M150-C-26 | Battery Positive + Battery Positive + Battery Positive | power_in | corroborated | |
| OEM-A-16 | A/C compressor signal | digital_in | M150-A-16 | Digital Input 3 | digital_in | corroborated | |
| OEM-A-17 | AFM potentiometer supply | vref | M150-A-10 | Sensor 5.0V C1 | vref | corroborated | |
| OEM-A-18 | Hall sender signal (engine speed) | trigger_in | M150-D-1 | Universal Digital Input 1 | digital_in | corroborated | |
| OEM-A-19 | Ground | ground | M150-A-24 + M150-A-25 + M150-A-32 + M150-C-10 + M150-C-11 | Battery Negative 3 + Battery Negative 4 + Battery Negative 5 + Battery Negative 1 + Battery Negative 2 | ground | corroborated | |
| OEM-A-2 | Oxygen (lambda) sensor signal | lambda_nb_in | M150-A-11 | Lambda Narrow Input 1 | lambda_nb_in | corroborated | |
| OEM-A-21 | AFM signal | analog_in | M150-C-14 | Analogue Voltage Input 1 | analog_in | corroborated | |
| OEM-A-22 | Idle stabilizer valve coil 1 | low_side_out | M150-C-24 | Low Side Injector 2 | injector_out | corroborated | |
| OEM-A-23 | Idle stabilizer valve coil 2 | low_side_out | M150-B-9 | Low Side Injector 3 | injector_out | corroborated | |
| OEM-A-25 | Ignition timing signal to TCI | ignition_out | M150-C-3 | Low Side Ignition 1 | ignition_out | corroborated | |
| OEM-A-3 | Fuel pump relay control | low_side_out | M150-C-23 | Low Side Injector 1 | injector_out | corroborated | |
| OEM-A-4 | Knock sensor signal | knock_in | M150-D-7 | Knock Input 1 | knock_in | corroborated | |
| OEM-A-5 | Knock sensor return | sensor_ground | M150-A-26 + M150-A-27 + M150-A-33 + M150-A-34 + M150-D-15 + M150-D-16 | Sensor 0V C1 + Sensor 0V C2 + Sensor 0V B1 + Sensor 0V A1 + Sensor 0V A + Sensor 0V B | sensor_ground | corroborated | |
| OEM-A-6 | Sensor ground (CTS/Hall/AFM/throttle) | sensor_ground | M150-A-26 + M150-A-27 + M150-A-33 + M150-A-34 + M150-D-15 + M150-D-16 | Sensor 0V C1 + Sensor 0V C2 + Sensor 0V B1 + Sensor 0V A1 + Sensor 0V A + Sensor 0V B | sensor_ground | corroborated | |
| OEM-A-7 | Knock sensor shield | shield | — | — | — | corroborated | |
| OEM-A-8 | Hall sender supply (distributor) | power_in | — | — | — | corroborated | |
| OEM-A-9 | Intake air temperature sensor | temp_in | M150-D-4 | Analogue Temperature Input 2 | temp_in | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-A-14 | SP-14V-1 | 0.85 | no route | ECU power (control-unit relay) | — | |
| W2 | SP-14V-1 | M150-B-13 | 0.85 | no route | Battery Positive | — | |
| W3 | SP-14V-1 | M150-B-19 | 0.85 | no route | Battery Positive | — | |
| W4 | SP-14V-1 | M150-C-26 | 0.85 | no route | Battery Positive | — | |
| W5 | OEM-A-13 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W6 | OEM-A-19 | SP-GND-1 | 0.85 | no route | Ground | — | |
| W7 | SP-GND-1 | M150-A-24 | 0.85 | no route | Battery Negative 3 | — | |
| W8 | SP-GND-1 | M150-A-25 | 0.85 | no route | Battery Negative 4 | — | |
| W9 | SP-GND-1 | M150-A-32 | 0.85 | no route | Battery Negative 5 | — | |
| W10 | SP-GND-1 | M150-C-10 | 0.85 | no route | Battery Negative 1 | — | |
| W11 | SP-GND-1 | M150-C-11 | 0.85 | no route | Battery Negative 2 | — | |
| W12 | OEM-A-5 | SP-0V-1 | 0.5 | no route | Knock sensor return | — | |
| W13 | OEM-A-6 | SP-0V-1 | 0.5 | no route | Sensor ground (CTS/Hall/AFM/throttle) | — | |
| W14 | SP-0V-1 | M150-A-26 | 0.5 | no route | Sensor 0V C1 | — | |
| W15 | SP-0V-1 | M150-A-27 | 0.5 | no route | Sensor 0V C2 | — | |
| W16 | SP-0V-1 | M150-A-33 | 0.5 | no route | Sensor 0V B1 | — | |
| W17 | SP-0V-1 | M150-A-34 | 0.5 | no route | Sensor 0V A1 | — | |
| W18 | SP-0V-1 | M150-D-15 | 0.5 | no route | Sensor 0V A | — | |
| W19 | SP-0V-1 | M150-D-16 | 0.5 | no route | Sensor 0V B | — | |
| W20 | OEM-A-17 | M150-A-10 | 0.5 | no route | AFM potentiometer supply | — | |
| W21 | OEM-A-18 | M150-D-1 | 0.5 | no route | Hall sender signal (engine speed) | — | |
| W22 | OEM-A-4 | M150-D-7 | 0.5 | no route | Knock sensor signal | — | |
| W23 | OEM-A-25 | M150-C-3 | 0.5 | no route | Ignition timing signal to TCI | — | |
| W24 | OEM-A-12 | M150-C-19 | 0.5 | no route | Injector driver (batch, all 4) | — | |
| W25 | OEM-A-3 | M150-C-23 | 0.5 | no route | Fuel pump relay control | — | |
| W26 | OEM-A-21 | M150-C-14 | 0.5 | no route | AFM signal | — | |
| W27 | OEM-A-10 | M150-D-3 | 0.5 | no route | Coolant temperature sensor | — | |
| W28 | OEM-A-22 | M150-C-24 | 0.5 | no route | Idle stabilizer valve coil 1 | — | |
| W29 | OEM-A-23 | M150-B-9 | 0.5 | no route | Idle stabilizer valve coil 2 | — | |
| W30 | OEM-A-2 | M150-A-11 | 0.5 | no route | Oxygen (lambda) sensor signal | — | |
| W31 | OEM-A-9 | M150-D-4 | 0.5 | no route | Intake air temperature sensor | — | |
| W32 | OEM-A-1 | M150-A-23 | 0.5 | no route | Starter signal (term 50) | — | |
| W33 | OEM-A-11 | M150-A-15 | 0.5 | no route | Idle/WOT throttle switch | — | |
| W34 | OEM-A-16 | M150-A-16 | 0.5 | no route | A/C compressor signal | — |
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 |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-A-8 | Required OEM function "Hall sender supply (distributor)" (power_in) is not connected to the new ECU. |
| warn | NET_FAMILY | OEM-A-18 ↔ M150-D-1 | OEM-A-18 "Hall sender signal (engine speed)" [trigger_in] is wired to M150-D-1 "Universal Digital Input 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| info | NET_FAMILY | OEM-A-22 ↔ M150-C-24 | OEM-A-22 "Idle stabilizer valve coil 1" [low_side_out] is wired to M150-C-24 "Low Side Injector 2" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-23 ↔ M150-B-9 | OEM-A-23 "Idle stabilizer valve coil 2" [low_side_out] is wired to M150-B-9 "Low Side Injector 3" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-3 ↔ M150-C-23 | OEM-A-3 "Fuel pump relay control" [low_side_out] is wired to M150-C-23 "Low Side Injector 1" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 1 optional OEM pins are not mapped: OEM-A-7 Knock sensor shield |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
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 8: Hall sender supply (distributor): no rule for class sensor_supply_in; wire by hand Not wired: - OEM-A 7: Knock sensor shield: no shield pin on MoTeC M150
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | MoTeC: M1 ECU Hardware manual (7 Nov 2013) — M130/M150/M170/M190 pinout tables | https://web.archive.org/web/2023id_/https://www.motec.com.au/hessian/uploads/M1_ECU_Hardware_c2517380e4.pdf | — | 2026-10-05 | 03dc5975f739 |
| 2 | community_copy | a2resource: Digifant II engine controller pinout (VW Golf/Jetta Mk2 1.8 8v) | http://www.a2resource.com/electrical/management/digifant2.html | — | — | — |
| 2 | community_copy | drive2.ru: VW Golf Mk2 PF Digifant II ECU pinout | https://www.drive2.ru/l/9886121 | — | — | — |