VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 → MoTeC M170 13170 (auto)
VW Corrado VR6 12v (AAA) Motronic M2.9 OBD1 — MoTeC — M170
⚠ 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 | 46 wires · 5 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 | M170-A-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | M170-A-32 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | M170-A-41 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | OEM-A-54 | M170-A-54 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-A-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-A-10 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-A-55 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-A-56 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-A-7 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | M170-A-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | M170-A-15 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | M170-A-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | M170-A-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-GND-1 | M170-A-21 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-A-16 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-A-33 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-A-67 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | M170-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | M170-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-A-41 | M170-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-A-68 | M170-A-49 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-A-44 | M170-A-56 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-A-34 | M170-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-A-8 | M170-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-A-60 | M170-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-A-52 | M170-A-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-A-24 | M170-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-A-3 | M170-A-43 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-A-26 | M170-A-50 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-A-4 | M170-A-51 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-A-25 | M170-A-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-A-2 | M170-A-66 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-A-17 | M170-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-A-40 | M170-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-A-14 | M170-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-A-49 | M170-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-A-6 | M170-A-42 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-A-9 | M170-A-57 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-A-27 | M170-A-62 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-A-20 | M170-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-A-15 | M170-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-A-36 | M170-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-A-65 | M170-A-46 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-A-37 | M170-A-45 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-A-39 | M170-A-52 | 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 | M170-A-11 | M170-A-16 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 2 | M170-A-11 | M170-A-23 | open (OL) | sensor ground must not touch +12 V supply | |
| 3 | M170-A-11 | M170-A-54 | open (OL) | sensor ground must not touch +12 V supply | |
| 4 | M170-A-14 | M170-A-16 | open (OL) | power ground must not touch 5 V sensor reference | |
| 5 | M170-A-14 | M170-A-23 | open (OL) | power ground must not touch +12 V supply | |
| 6 | M170-A-14 | M170-A-54 | open (OL) | power ground must not touch +12 V supply | |
| 7 | M170-A-16 | M170-A-54 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 8 | M170-A-23 | M170-A-16 | 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
M170-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Low Side Ignition 1 | — | W25 | — | 0.5 | OEM-A-8 | — | — | — |
| 10 | Low Side Ignition 4 | — | — | — | — | — | — | — | — |
| 11 | Sensor 0V A | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Analogue Voltage Input 5 | — | — | — | — | — | — | — | — |
| 13 | Universal Digital Input 7 | — | — | — | — | — | — | — | — |
| 14 | Battery Negative 1 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | Battery Negative 2 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 16 | Sensor 5.0V A | — | W21 | — | 0.5 | OEM-A-41 | — | — | — |
| 17 | Low Side Ignition 5 | — | — | — | — | — | — | — | — |
| 18 | Analogue Voltage Input 2 | — | W35 | — | 0.5 | OEM-A-40 | — | — | — |
| 19 | Battery Negative 3 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Low Side Ignition 8 | — | — | — | — | — | — | — | — |
| 20 | Battery Negative 4 | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | Battery Negative 5 | — | W15 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Universal Digital Input 8 | — | — | — | — | — | — | — | — |
| 23 | Battery Positive | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | Peak Hold Injector 5 | — | W37 | — | 0.5 | OEM-A-49 | — | — | — |
| 25 | Low Side Ignition 6 | — | — | — | — | — | — | — | — |
| 26 | Analogue Voltage Input 1 | — | W34 | — | 0.5 | OEM-A-17 | — | — | — |
| 27 | Sensor 0V B | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Analogue Temperature Input 1 | — | W36 | — | 0.5 | OEM-A-14 | — | — | — |
| 29 | Knock Input 1 | — | W24 | — | 0.5 | OEM-A-34 | — | — | — |
| 3 | Low Side Ignition 7 | — | — | — | — | — | — | — | — |
| 30 | Analogue Temperature Input 3 | — | W43 | — | 0.5 | OEM-A-36 | — | — | — |
| 31 | CAN Bus 1 Low | — | — | — | — | — | — | — | — |
| 32 | Battery Positive | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 33 | Peak Hold Injector 1 | — | W28 | — | 0.5 | OEM-A-24 | — | — | — |
| 34 | Sensor 5.0V B | — | — | — | — | — | — | — | — |
| 35 | Analogue Voltage Input 7 | — | — | — | — | — | — | — | — |
| 36 | Analogue Voltage Input 6 | — | — | — | — | — | — | — | — |
| 37 | Sensor 6.3V | — | — | — | — | — | — | — | — |
| 38 | Analogue Temperature Input 2 | — | W42 | — | 0.5 | OEM-A-15 | — | — | — |
| 39 | Analogue Temperature Input 4 | — | — | — | — | — | — | — | — |
| 4 | Low Side Ignition 3 | — | W27 | — | 0.5 | OEM-A-52 | — | — | — |
| 40 | CAN Bus 1 High | — | — | — | — | — | — | — | — |
| 41 | Battery Positive | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 42 | Peak Hold Injector 6 | — | W38 | — | 0.5 | OEM-A-6 | — | — | — |
| 43 | Low Side Injector 1 | — | W29 | — | 0.5 | OEM-A-3 | — | — | — |
| 44 | Analogue Voltage Input 8 | — | — | — | — | — | — | — | — |
| 45 | Universal Digital Input 4 | — | W45 | — | 0.5 | OEM-A-37 | — | — | — |
| 46 | Universal Digital Input 3 | — | W44 | — | 0.5 | OEM-A-65 | — | — | — |
| 47 | Ethernet Transmit - | — | — | — | — | — | — | — | — |
| 48 | Ethernet Transmit + | — | — | — | — | — | — | — | — |
| 49 | Universal Digital Input 1 | — | W22 | — | 0.5 | OEM-A-68 | — | — | — |
| 5 | Low Side Ignition 2 | — | W26 | — | 0.5 | OEM-A-60 | — | — | — |
| 50 | Peak Hold Injector 2 | — | W30 | — | 0.5 | OEM-A-26 | — | — | — |
| 51 | Low Side Injector 2 | — | W31 | — | 0.5 | OEM-A-4 | — | — | — |
| 52 | Universal Digital Input 5 | — | W46 | — | 0.5 | OEM-A-39 | — | — | — |
| 53 | Universal Digital Input 6 | — | — | — | — | — | — | — | — |
| 54 | Battery Backup | — | W5 | — | 0.85 | OEM-A-54 | — | — | — |
| 55 | Ethernet Receive + | — | — | — | — | — | — | — | — |
| 56 | Universal Digital Input 2 | — | W23 | — | 0.5 | OEM-A-44 | — | — | — |
| 57 | Peak Hold Injector 7 | — | W39 | — | 0.5 | OEM-A-9 | — | — | — |
| 58 | Half Bridge Output 5 | — | — | — | — | — | — | — | — |
| 59 | Half Bridge Output 3 | — | — | — | — | — | — | — | — |
| 6 | Analogue Voltage Input 3 | — | W41 | — | 0.5 | OEM-A-20 | — | — | — |
| 60 | Knock Input 2 | — | — | — | — | — | — | — | — |
| 61 | Ethernet Receive - | — | — | — | — | — | — | — | — |
| 62 | Peak Hold Injector 8 | — | W40 | — | 0.5 | OEM-A-27 | — | — | — |
| 63 | Peak Hold Injector 3 | — | W32 | — | 0.5 | OEM-A-25 | — | — | — |
| 64 | Half Bridge Output 6 | — | — | — | — | — | — | — | — |
| 65 | Half Bridge Output 4 | — | — | — | — | — | — | — | — |
| 66 | Peak Hold Injector 4 | — | W33 | — | 0.5 | OEM-A-2 | — | — | — |
| 7 | Analogue Voltage Input 4 | — | — | — | — | — | — | — | — |
| 8 | Half Bridge Output 2 | — | — | — | — | — | — | — | — |
| 9 | Half Bridge Output 1 | — | — | — | — | — | — | — | — |
OEM-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ground (E-1) | — | W6 | — | 0.85 | SP-GND-1 | — | — | — |
| 10 | Ground (OBD1 EGR enable) | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 14 | Coolant temperature (CLT) | — | W36 | — | 0.5 | M170-A-28 | — | — | — |
| 15 | EGR temperature sensor | — | W42 | — | 0.5 | M170-A-38 | — | — | — |
| 16 | MAF ground | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | MAF signal | — | W34 | — | 0.5 | M170-A-26 | — | — | — |
| 2 | Injector 6 (cyl 6) | — | W33 | — | 0.5 | M170-A-66 | — | — | — |
| 20 | O2 sensor 1 (primary) | — | W41 | — | 0.5 | M170-A-6 | — | — | — |
| 21 | Diagnostic L-line | — | — | — | — | — | — | — | — |
| 22 | Tachometer output | — | — | — | — | — | — | — | — |
| 23 | ECU main power (from engine-electronics relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | Injector 1 (cyl 1) | — | W28 | — | 0.5 | M170-A-33 | — | — | — |
| 25 | Injector 5 (cyl 5) | — | W32 | — | 0.5 | M170-A-63 | — | — | — |
| 26 | Injector 3 (cyl 3) | — | W30 | — | 0.5 | M170-A-50 | — | — | — |
| 27 | Idle air control valve | — | W40 | — | 0.5 | M170-A-62 | — | — | — |
| 3 | Injector 2 (cyl 2) | — | W29 | — | 0.5 | M170-A-43 | — | — | — |
| 31 | EVAP canister purge valve | — | — | — | — | — | — | — | — |
| 33 | Sensor ground bus | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Knock sensor 1 | — | W24 | — | 0.5 | M170-A-29 | — | — | — |
| 36 | Intake air temperature (IAT) | — | W43 | — | 0.5 | M170-A-30 | — | — | — |
| 37 | A/C compressor switch | — | W45 | — | 0.5 | M170-A-45 | — | — | — |
| 38 | Ignition switch (run/start) | — | — | — | — | — | — | — | — |
| 39 | A/C switch (cabin) | — | W46 | — | 0.5 | M170-A-52 | — | — | — |
| 4 | Injector 4 (cyl 4) | — | W31 | — | 0.5 | M170-A-51 | — | — | — |
| 40 | Throttle position sensor 1 | — | W35 | — | 0.5 | M170-A-18 | — | — | — |
| 41 | TPS power (+5V) | — | W21 | — | 0.5 | M170-A-16 | — | — | — |
| 43 | Diagnostic K-line | — | — | — | — | — | — | — | — |
| 44 | Camshaft position sensor (G40) | — | W23 | — | 0.5 | M170-A-56 | — | — | — |
| 49 | Secondary air injection relay control | — | W37 | — | 0.5 | M170-A-24 | — | — | — |
| 5 | Check engine light (MIL) | — | — | — | — | — | — | — | — |
| 51 | MFA fuel-consumption signal | — | — | — | — | — | — | — | — |
| 52 | Ignition coil 4 (coil pack pin 4) | — | W27 | — | 0.5 | M170-A-4 | — | — | — |
| 53 | Idle air control valve (2nd) | — | — | — | — | — | — | — | — |
| 54 | Battery constant (+12V) | — | W5 | — | 0.85 | M170-A-54 | — | — | — |
| 55 | Ground (E-3) | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 56 | Ground (E-4) | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 59 | Mass airflow sensor (5th terminal) | — | — | — | — | — | — | — | — |
| 6 | Fuel pump relay control | — | W38 | — | 0.5 | M170-A-42 | — | — | — |
| 60 | Ignition coil 3 (coil pack pin 3) | — | W26 | — | 0.5 | M170-A-5 | — | — | — |
| 65 | Vehicle speed sensor (VSS) | — | W44 | — | 0.5 | M170-A-46 | — | — | — |
| 67 | Crank sensor return (VR-) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 68 | Crank position sensor (G28, VR+) | — | W22 | — | 0.5 | M170-A-49 | — | — | — |
| 7 | Ground (E-2) | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 8 | Ignition coil 2 (coil pack pin 2) | — | W25 | — | 0.5 | M170-A-1 | — | — | — |
| 9 | Engine electronics relay control | — | W39 | — | 0.5 | M170-A-57 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W16 | — | 0.5 | OEM-A-16 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-A-33 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-A-67 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | M170-A-11 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | M170-A-27 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-A-23 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | M170-A-23 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | M170-A-32 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | M170-A-41 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W6 | — | 0.85 | OEM-A-1 | — | — | — |
| 1 | — | — | W7 | — | 0.85 | OEM-A-10 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-A-55 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-A-56 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-A-7 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | M170-A-14 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | M170-A-15 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | M170-A-19 | — | — | — |
| 1 | — | — | W14 | — | 0.85 | M170-A-20 | — | — | — |
| 1 | — | — | W15 | — | 0.85 | M170-A-21 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-A-1 | Ground (E-1) | ground | M170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21 | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 | ground | single_source | |
| OEM-A-10 | Ground (OBD1 EGR enable) | ground | M170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21 | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 | ground | single_source | |
| OEM-A-14 | Coolant temperature (CLT) | temp_in | M170-A-28 | Analogue Temperature Input 1 | temp_in | single_source | |
| OEM-A-15 | EGR temperature sensor | temp_in | M170-A-38 | Analogue Temperature Input 2 | temp_in | single_source | |
| OEM-A-16 | MAF ground | sensor_ground | M170-A-11 + M170-A-27 | Sensor 0V A + Sensor 0V B | sensor_ground | single_source | |
| OEM-A-17 | MAF signal | analog_in | M170-A-26 | Analogue Voltage Input 1 | analog_in | single_source | |
| OEM-A-2 | Injector 6 (cyl 6) | injector_out | M170-A-66 | Peak Hold Injector 4 | injector_out | single_source | |
| OEM-A-20 | O2 sensor 1 (primary) | lambda_nb_in | M170-A-6 | Analogue Voltage Input 3 | analog_in | single_source | |
| OEM-A-21 | Diagnostic L-line | serial | — | — | — | single_source | |
| OEM-A-22 | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-A-23 | ECU main power (from engine-electronics relay) | power_in | M170-A-23 + M170-A-32 + M170-A-41 | Battery Positive + Battery Positive + Battery Positive | power_in | single_source | |
| OEM-A-24 | Injector 1 (cyl 1) | injector_out | M170-A-33 | Peak Hold Injector 1 | injector_out | single_source | |
| OEM-A-25 | Injector 5 (cyl 5) | injector_out | M170-A-63 | Peak Hold Injector 3 | injector_out | single_source | |
| OEM-A-26 | Injector 3 (cyl 3) | injector_out | M170-A-50 | Peak Hold Injector 2 | injector_out | single_source | |
| OEM-A-27 | Idle air control valve | low_side_out | M170-A-62 | Peak Hold Injector 8 | injector_out | single_source | |
| OEM-A-3 | Injector 2 (cyl 2) | injector_out | M170-A-43 | Low Side Injector 1 | injector_out | single_source | |
| OEM-A-31 | EVAP canister purge valve | low_side_out | — | — | — | single_source | |
| OEM-A-33 | Sensor ground bus | sensor_ground | M170-A-11 + M170-A-27 | Sensor 0V A + Sensor 0V B | sensor_ground | single_source | |
| OEM-A-34 | Knock sensor 1 | knock_in | M170-A-29 | Knock Input 1 | knock_in | single_source | |
| OEM-A-36 | Intake air temperature (IAT) | temp_in | M170-A-30 | Analogue Temperature Input 3 | temp_in | single_source | |
| OEM-A-37 | A/C compressor switch | digital_in | M170-A-45 | Universal Digital Input 4 | digital_in | single_source | |
| OEM-A-38 | Ignition switch (run/start) | digital_in | — | — | — | single_source | |
| OEM-A-39 | A/C switch (cabin) | digital_in | M170-A-52 | Universal Digital Input 5 | digital_in | single_source | |
| OEM-A-4 | Injector 4 (cyl 4) | injector_out | M170-A-51 | Low Side Injector 2 | injector_out | single_source | |
| OEM-A-40 | Throttle position sensor 1 | analog_in | M170-A-18 | Analogue Voltage Input 2 | analog_in | single_source | |
| OEM-A-41 | TPS power (+5V) | vref | M170-A-16 | Sensor 5.0V A | vref | single_source | |
| OEM-A-43 | Diagnostic K-line | serial | — | — | — | single_source | |
| OEM-A-44 | Camshaft position sensor (G40) | trigger_in | M170-A-56 | Universal Digital Input 2 | digital_in | single_source | |
| OEM-A-49 | Secondary air injection relay control | low_side_out | M170-A-24 | Peak Hold Injector 5 | injector_out | single_source | |
| OEM-A-5 | Check engine light (MIL) | low_side_out | — | — | — | single_source | |
| OEM-A-51 | MFA fuel-consumption signal | tacho_out | — | — | — | single_source | |
| OEM-A-52 | Ignition coil 4 (coil pack pin 4) | ignition_out | M170-A-4 | Low Side Ignition 3 | ignition_out | single_source | |
| OEM-A-53 | Idle air control valve (2nd) | low_side_out | — | — | — | single_source | |
| OEM-A-54 | Battery constant (+12V) | power_in | M170-A-54 | Battery Backup | power_in | single_source | |
| OEM-A-55 | Ground (E-3) | ground | M170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21 | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 | ground | single_source | |
| OEM-A-56 | Ground (E-4) | ground | M170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21 | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 | 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 | M170-A-42 | Peak Hold Injector 6 | injector_out | single_source | |
| OEM-A-60 | Ignition coil 3 (coil pack pin 3) | ignition_out | M170-A-5 | Low Side Ignition 2 | ignition_out | single_source | |
| OEM-A-65 | Vehicle speed sensor (VSS) | digital_in | M170-A-46 | Universal Digital Input 3 | digital_in | single_source | |
| OEM-A-67 | Crank sensor return (VR-) | sensor_ground | M170-A-11 + M170-A-27 | Sensor 0V A + Sensor 0V B | sensor_ground | single_source | |
| OEM-A-68 | Crank position sensor (G28, VR+) | trigger_in | M170-A-49 | Universal Digital Input 1 | digital_in | single_source | |
| OEM-A-7 | Ground (E-2) | ground | M170-A-14 + M170-A-15 + M170-A-19 + M170-A-20 + M170-A-21 | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 | ground | single_source | |
| OEM-A-8 | Ignition coil 2 (coil pack pin 2) | ignition_out | M170-A-1 | Low Side Ignition 1 | ignition_out | single_source | |
| OEM-A-9 | Engine electronics relay control | low_side_out | M170-A-57 | Peak Hold Injector 7 | injector_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 | M170-A-23 | 0.85 | no route | Battery Positive | — | |
| W3 | SP-14V-1 | M170-A-32 | 0.85 | no route | Battery Positive | — | |
| W4 | SP-14V-1 | M170-A-41 | 0.85 | no route | Battery Positive | — | |
| W5 | OEM-A-54 | M170-A-54 | 0.85 | no route | Battery constant (+12V) | — | |
| W6 | OEM-A-1 | SP-GND-1 | 0.85 | no route | Ground (E-1) | — | |
| W7 | OEM-A-10 | SP-GND-1 | 0.85 | no route | Ground (OBD1 EGR enable) | — | |
| W8 | OEM-A-55 | SP-GND-1 | 0.85 | no route | Ground (E-3) | — | |
| W9 | OEM-A-56 | SP-GND-1 | 0.85 | no route | Ground (E-4) | — | |
| W10 | OEM-A-7 | SP-GND-1 | 0.85 | no route | Ground (E-2) | — | |
| W11 | SP-GND-1 | M170-A-14 | 0.85 | no route | Battery Negative 1 | — | |
| W12 | SP-GND-1 | M170-A-15 | 0.85 | no route | Battery Negative 2 | — | |
| W13 | SP-GND-1 | M170-A-19 | 0.85 | no route | Battery Negative 3 | — | |
| W14 | SP-GND-1 | M170-A-20 | 0.85 | no route | Battery Negative 4 | — | |
| W15 | SP-GND-1 | M170-A-21 | 0.85 | no route | Battery Negative 5 | — | |
| W16 | OEM-A-16 | SP-0V-1 | 0.5 | no route | MAF ground | — | |
| W17 | OEM-A-33 | SP-0V-1 | 0.5 | no route | Sensor ground bus | — | |
| W18 | OEM-A-67 | SP-0V-1 | 0.5 | no route | Crank sensor return (VR-) | — | |
| W19 | SP-0V-1 | M170-A-11 | 0.5 | no route | Sensor 0V A | — | |
| W20 | SP-0V-1 | M170-A-27 | 0.5 | no route | Sensor 0V B | — | |
| W21 | OEM-A-41 | M170-A-16 | 0.5 | no route | TPS power (+5V) | — | |
| W22 | OEM-A-68 | M170-A-49 | 0.5 | no route | Crank position sensor (G28, VR+) | — | |
| W23 | OEM-A-44 | M170-A-56 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W24 | OEM-A-34 | M170-A-29 | 0.5 | no route | Knock sensor 1 | — | |
| W25 | OEM-A-8 | M170-A-1 | 0.5 | no route | Ignition coil 2 (coil pack pin 2) | — | |
| W26 | OEM-A-60 | M170-A-5 | 0.5 | no route | Ignition coil 3 (coil pack pin 3) | — | |
| W27 | OEM-A-52 | M170-A-4 | 0.5 | no route | Ignition coil 4 (coil pack pin 4) | — | |
| W28 | OEM-A-24 | M170-A-33 | 0.5 | no route | Injector 1 (cyl 1) | — | |
| W29 | OEM-A-3 | M170-A-43 | 0.5 | no route | Injector 2 (cyl 2) | — | |
| W30 | OEM-A-26 | M170-A-50 | 0.5 | no route | Injector 3 (cyl 3) | — | |
| W31 | OEM-A-4 | M170-A-51 | 0.5 | no route | Injector 4 (cyl 4) | — | |
| W32 | OEM-A-25 | M170-A-63 | 0.5 | no route | Injector 5 (cyl 5) | — | |
| W33 | OEM-A-2 | M170-A-66 | 0.5 | no route | Injector 6 (cyl 6) | — | |
| W34 | OEM-A-17 | M170-A-26 | 0.5 | no route | MAF signal | — | |
| W35 | OEM-A-40 | M170-A-18 | 0.5 | no route | Throttle position sensor 1 | — | |
| W36 | OEM-A-14 | M170-A-28 | 0.5 | no route | Coolant temperature (CLT) | — | |
| W37 | OEM-A-49 | M170-A-24 | 0.5 | no route | Secondary air injection relay control | — | |
| W38 | OEM-A-6 | M170-A-42 | 0.5 | no route | Fuel pump relay control | — | |
| W39 | OEM-A-9 | M170-A-57 | 0.5 | no route | Engine electronics relay control | — | |
| W40 | OEM-A-27 | M170-A-62 | 0.5 | no route | Idle air control valve | — | |
| W41 | OEM-A-20 | M170-A-6 | 0.5 | no route | O2 sensor 1 (primary) | — | |
| W42 | OEM-A-15 | M170-A-38 | 0.5 | no route | EGR temperature sensor | — | |
| W43 | OEM-A-36 | M170-A-30 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W44 | OEM-A-65 | M170-A-46 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W45 | OEM-A-37 | M170-A-45 | 0.5 | no route | A/C compressor switch | — | |
| W46 | OEM-A-39 | M170-A-52 | 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 (8)
| 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 | NET_FAMILY | OEM-A-44 ↔ M170-A-56 | OEM-A-44 "Camshaft position sensor (G40)" [trigger_in] is wired to M170-A-56 "Universal Digital Input 2" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| warn | NET_FAMILY | OEM-A-68 ↔ M170-A-49 | OEM-A-68 "Crank position sensor (G28, VR+)" [trigger_in] is wired to M170-A-49 "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-27 ↔ M170-A-62 | OEM-A-27 "Idle air control valve" [low_side_out] is wired to M170-A-62 "Peak Hold Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-49 ↔ M170-A-24 | OEM-A-49 "Secondary air injection relay control" [low_side_out] is wired to M170-A-24 "Peak Hold Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-6 ↔ M170-A-42 | OEM-A-6 "Fuel pump relay control" [low_side_out] is wired to M170-A-42 "Peak Hold Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-A-9 ↔ M170-A-57 | OEM-A-9 "Engine electronics relay control" [low_side_out] is wired to M170-A-57 "Peak Hold Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 8 optional OEM pins are not mapped: OEM-A-21 Diagnostic L-line; OEM-A-22 Tachometer output; OEM-A-31 EVAP canister purge valve; OEM-A-43 Diagnostic K-line; OEM-A-5 Check engine light (MIL); OEM-A-51 MFA fuel-consumption signal; OEM-A-53 Idle air control valve (2nd); OEM-A-59 Mass airflow sensor (5th terminal) |
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 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); MoTeC M170 has no dedicated key-on input Not wired: - OEM-A 31: EVAP canister purge valve: no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-A 5: Check engine light (MIL): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-A 53: Idle air control valve (2nd): no free low_side/relay_control/heater_low_side/ls_hs/injector on MoTeC M170 - OEM-A 22: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MoTeC M170 - OEM-A 51: MFA fuel-consumption signal: no free tacho/frequency_out/low_side/ls_hs on MoTeC M170 - OEM-A 21: Diagnostic L-line: no free k_line on MoTeC M170 - OEM-A 43: Diagnostic K-line: no free k_line on MoTeC M170 - 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 | 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: VR6/ABA Motronic M2.9 (OBD1) engine control unit pinout | http://www.a2resource.com/electrical/management/motronicvr6aba.html | — | — | — |