VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW → MoTeC M150 13150 (auto)
VW Golf Mk4 1.8T 20v (AUM, Bosch ME7.5) DBW — 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 | 68 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-T121-121 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-T121-21 | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | M150-B-13 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | M150-B-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | M150-C-26 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-T121-62 | M150-D-12 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-T121-1 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-T121-2 | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | SP-GND-1 | M150-A-24 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | M150-A-25 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | M150-A-32 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | M150-C-10 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | M150-C-11 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | OEM-T121-108 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-T121-29 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | OEM-T121-34 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-T121-36 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-T121-90 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-T121-91 | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | M150-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | M150-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | M150-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | M150-A-34 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | M150-D-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | M150-D-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-T121-72 | M150-A-10 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-T121-73 | M150-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-T121-83 | M150-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-T121-98 | M150-B-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-T121-99 | M150-C-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-T121-82 | M150-D-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-T121-86 | M150-D-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-T121-106 | M150-D-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-T121-107 | M150-D-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-T121-102 | M150-C-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-T121-95 | M150-C-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-T121-103 | M150-C-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-T121-94 | M150-C-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-T121-96 | M150-C-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-T121-89 | M150-C-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-T121-97 | M150-C-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-T121-88 | M150-C-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-T121-118 | M150-C-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-T121-117 | M150-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-T121-53 | M150-C-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-T121-101 | M150-C-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-T121-33 | M150-C-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-T121-84 | M150-C-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-T121-35 | M150-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-T121-92 | M150-D-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-T121-93 | M150-D-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-T121-65 | M150-B-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-T121-66 | M150-B-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-T121-5 | M150-B-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-T121-63 | M150-B-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-T121-104 | M150-C-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-T121-105 | M150-C-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-T121-115 | M150-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-T121-47 | M150-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-T121-48 | M150-C-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-T121-64 | M150-C-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-T121-9 | M150-B-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W63 | OEM-T121-68 | M150-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W64 | OEM-T121-69 | M150-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W65 | OEM-T121-85 | M150-D-4 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W66 | OEM-T121-54 | M150-D-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W67 | OEM-T121-60 | M150-D-17 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W68 | OEM-T121-58 | M150-D-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ |
Bench test (before first power-up)
Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).
| # | Probe A | Probe B | Expect | Why | Reading |
|---|---|---|---|---|---|
| 1 | M150-A-24 | M150-A-10 | open (OL) | power ground must not touch 5 V sensor reference | |
| 2 | M150-A-24 | M150-A-18 | open (OL) | power ground must not touch 5 V sensor reference | |
| 3 | M150-A-24 | M150-A-19 | 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-A-24 | M150-B-26 | open (OL) | power ground must not touch 5 V sensor reference | |
| 6 | M150-A-24 | M150-C-2 | open (OL) | power ground must not touch 5 V sensor reference | |
| 7 | M150-A-24 | M150-D-12 | open (OL) | power ground must not touch +12 V supply | |
| 8 | M150-A-26 | M150-A-10 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 9 | M150-A-26 | M150-A-18 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 10 | M150-A-26 | M150-A-19 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 11 | M150-A-26 | M150-B-13 | open (OL) | sensor ground must not touch +12 V supply | |
| 12 | M150-A-26 | M150-B-26 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 13 | M150-A-26 | M150-C-2 | open (OL) | sensor ground must not touch 5 V sensor reference | |
| 14 | M150-A-26 | M150-D-12 | open (OL) | sensor ground must not touch +12 V supply | |
| 15 | M150-B-13 | M150-A-10 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 16 | M150-B-13 | M150-A-18 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 17 | M150-B-13 | M150-A-19 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 18 | M150-B-13 | M150-B-26 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 19 | M150-B-13 | M150-C-2 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 20 | M150-D-12 | M150-A-10 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 21 | M150-D-12 | M150-A-18 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 22 | M150-D-12 | M150-A-19 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 23 | M150-D-12 | M150-B-26 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 24 | M150-D-12 | M150-C-2 | 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 | — | W26 | — | 0.5 | OEM-T121-72 | — | — | — |
| 11 | Lambda Narrow Input 1 | — | W63 | — | 0.5 | OEM-T121-68 | — | — | — |
| 12 | Lambda Narrow Input 2 | — | W64 | — | 0.5 | OEM-T121-69 | — | — | — |
| 13 | Knock Input 3 | — | — | — | — | — | — | — | — |
| 14 | Knock Input 4 | — | — | — | — | — | — | — | — |
| 15 | Digital Input 2 | — | — | — | — | — | — | — | — |
| 16 | Digital Input 3 | — | — | — | — | — | — | — | — |
| 17 | Digital Input 4 | — | — | — | — | — | — | — | — |
| 18 | Sensor 5.0V C2 | — | W27 | — | 0.5 | OEM-T121-73 | — | — | — |
| 19 | Sensor 5.0V B2 | — | W28 | — | 0.5 | OEM-T121-83 | — | — | — |
| 2 | Analogue Temperature Input 6 | — | — | — | — | — | — | — | — |
| 20 | LIN Bus | — | — | — | — | — | — | — | — |
| 21 | RS232 Receive | — | — | — | — | — | — | — | — |
| 22 | RS232 Transmit | — | — | — | — | — | — | — | — |
| 23 | Digital Input 1 | — | — | — | — | — | — | — | — |
| 24 | Battery Negative 3 | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| 25 | Battery Negative 4 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 26 | Sensor 0V C1 | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 27 | Sensor 0V C2 | — | W21 | — | 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 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 33 | Sensor 0V B1 | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 34 | Sensor 0V A1 | — | W23 | — | 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 | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 14 | Low Side Injector 6 | — | W55 | — | 0.5 | OEM-T121-63 | — | — | — |
| 15 | Low Side Injector 4 | — | W53 | — | 0.5 | OEM-T121-66 | — | — | — |
| 16 | Analogue Voltage Input 12 | — | — | — | — | — | — | — | — |
| 17 | Analogue Voltage Input 13 | — | — | — | — | — | — | — | — |
| 18 | Analogue Voltage Input 14 | — | — | — | — | — | — | — | — |
| 19 | Battery Positive | — | W4 | — | 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 | — | W62 | — | 0.5 | OEM-T121-9 | — | — | — |
| 23 | Peak Hold Injector 10 | — | — | — | — | — | — | — | — |
| 24 | Peak Hold Injector 11 | — | — | — | — | — | — | — | — |
| 25 | Peak Hold Injector 12 | — | — | — | — | — | — | — | — |
| 26 | Sensor 5.0V A | — | W29 | — | 0.5 | OEM-T121-98 | — | — | — |
| 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 | — | W54 | — | 0.5 | OEM-T121-5 | — | — | — |
| 9 | Low Side Injector 3 | — | W52 | — | 0.5 | OEM-T121-65 | — | — | — |
M150-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Half Bridge Output 2 | — | W43 | — | 0.5 | OEM-T121-118 | — | — | — |
| 10 | Battery Negative 1 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 11 | Battery Negative 2 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 12 | Low Side Ignition 7 | — | — | — | — | — | — | — | — |
| 13 | Low Side Ignition 8 | — | — | — | — | — | — | — | — |
| 14 | Analogue Voltage Input 1 | — | W45 | — | 0.5 | OEM-T121-53 | — | — | — |
| 15 | Analogue Voltage Input 2 | — | W46 | — | 0.5 | OEM-T121-101 | — | — | — |
| 16 | Analogue Voltage Input 3 | — | W47 | — | 0.5 | OEM-T121-33 | — | — | — |
| 17 | Analogue Voltage Input 4 | — | W48 | — | 0.5 | OEM-T121-84 | — | — | — |
| 18 | Half Bridge Output 1 | — | W44 | — | 0.5 | OEM-T121-117 | — | — | — |
| 19 | Peak Hold Injector 1 | — | W39 | — | 0.5 | OEM-T121-96 | — | — | — |
| 2 | Sensor 5.0V A | — | W30 | — | 0.5 | OEM-T121-99 | — | — | — |
| 20 | Peak Hold Injector 2 | — | W41 | — | 0.5 | OEM-T121-97 | — | — | — |
| 21 | Peak Hold Injector 3 | — | W56 | — | 0.5 | OEM-T121-104 | — | — | — |
| 22 | Peak Hold Injector 4 | — | W57 | — | 0.5 | OEM-T121-105 | — | — | — |
| 23 | Low Side Injector 1 | — | W40 | — | 0.5 | OEM-T121-89 | — | — | — |
| 24 | Low Side Injector 2 | — | W42 | — | 0.5 | OEM-T121-88 | — | — | — |
| 25 | Analogue Voltage Input 5 | — | W49 | — | 0.5 | OEM-T121-35 | — | — | — |
| 26 | Battery Positive | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | Peak Hold Injector 5 | — | W58 | — | 0.5 | OEM-T121-115 | — | — | — |
| 28 | Peak Hold Injector 6 | — | W59 | — | 0.5 | OEM-T121-47 | — | — | — |
| 29 | Peak Hold Injector 7 | — | W60 | — | 0.5 | OEM-T121-48 | — | — | — |
| 3 | Low Side Ignition 1 | — | W35 | — | 0.5 | OEM-T121-102 | — | — | — |
| 30 | Peak Hold Injector 8 | — | W61 | — | 0.5 | OEM-T121-64 | — | — | — |
| 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 | — | W36 | — | 0.5 | OEM-T121-95 | — | — | — |
| 5 | Low Side Ignition 3 | — | W37 | — | 0.5 | OEM-T121-103 | — | — | — |
| 6 | Low Side Ignition 4 | — | W38 | — | 0.5 | OEM-T121-94 | — | — | — |
| 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 | — | W31 | — | 0.5 | OEM-T121-82 | — | — | — |
| 10 | Universal Digital Input 5 | — | — | — | — | — | — | — | — |
| 11 | Universal Digital Input 6 | — | — | — | — | — | — | — | — |
| 12 | Battery Backup | — | W6 | — | 0.85 | OEM-T121-62 | — | — | — |
| 13 | Knock Input 2 | — | W34 | — | 0.5 | OEM-T121-107 | — | — | — |
| 14 | Universal Digital Input 7 | — | — | — | — | — | — | — | — |
| 15 | Sensor 0V A | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Sensor 0V B | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 17 | CAN Bus 1 High | — | W67 | — | 0.5 | OEM-T121-60 | — | — | — |
| 18 | CAN Bus 1 Low | — | W68 | — | 0.5 | OEM-T121-58 | — | — | — |
| 19 | Sensor 6.3V | — | — | — | — | — | — | — | — |
| 2 | Universal Digital Input 2 | — | W32 | — | 0.5 | OEM-T121-86 | — | — | — |
| 20 | Analogue Voltage Input 6 | — | W50 | — | 0.5 | OEM-T121-92 | — | — | — |
| 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 | — | W51 | — | 0.5 | OEM-T121-93 | — | — | — |
| 4 | Analogue Temperature Input 2 | — | W65 | — | 0.5 | OEM-T121-85 | — | — | — |
| 5 | Analogue Temperature Input 3 | — | — | — | — | — | — | — | — |
| 6 | Analogue Temperature Input 4 | — | — | — | — | — | — | — | — |
| 7 | Knock Input 1 | — | W33 | — | 0.5 | OEM-T121-106 | — | — | — |
| 8 | Universal Digital Input 3 | — | W66 | — | 0.5 | OEM-T121-54 | — | — | — |
| 9 | Universal Digital Input 4 | — | — | — | — | — | — | — | — |
OEM-T121
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECU ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| 101 | Boost pressure sensor (G31) | — | W46 | — | 0.5 | M150-C-15 | — | — | — |
| 102 | Ignition coil 1 (N127) | — | W35 | — | 0.5 | M150-C-3 | — | — | — |
| 103 | Ignition coil 3 (N158) | — | W37 | — | 0.5 | M150-C-5 | — | — | — |
| 104 | Boost control solenoid (N75) | — | W56 | — | 0.5 | M150-C-21 | — | — | — |
| 105 | Diverter valve (N249) | — | W57 | — | 0.5 | M150-C-22 | — | — | — |
| 106 | Knock sensor 1 (G61) | — | W33 | — | 0.5 | M150-D-7 | — | — | — |
| 107 | Knock sensor 2 (G66) | — | W34 | — | 0.5 | M150-D-13 | — | — | — |
| 108 | Sensor ground | — | W14 | — | 0.5 | SP-0V-1 | — | — | — |
| 115 | VVT camshaft adjustment valve (N205) | — | W58 | — | 0.5 | M150-C-27 | — | — | — |
| 117 | Throttle motor G186 (+) | — | W44 | — | 0.5 | M150-C-18 | — | — | — |
| 118 | Throttle motor G186 (−) | — | W43 | — | 0.5 | M150-C-1 | — | — | — |
| 121 | ECM + coil power (J271 relay feed) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| 2 | ECU ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | ECM power (J271 relay feed) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| 27 | MAF sensor supply (G70) | — | — | — | — | — | — | — | — |
| 29 | MAF sensor ground (G70) | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| 3 | Ignition switch +12V (term 15) | — | — | — | — | — | — | — | — |
| 33 | Accelerator pedal position 1 (G79) | — | W47 | — | 0.5 | M150-C-16 | — | — | — |
| 34 | Accelerator pedal position 1 ground (G79) | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 35 | Accelerator pedal position 2 (G185) | — | W49 | — | 0.5 | M150-C-25 | — | — | — |
| 36 | Accelerator pedal position 2 ground (G185) | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 37 | Engine speed signal (tacho to cluster) | — | — | — | — | — | — | — | — |
| 43 | K-line diagnostics (OBD pin 7) | — | — | — | — | — | — | — | — |
| 47 | Check engine light (MIL) | — | W59 | — | 0.5 | M150-C-28 | — | — | — |
| 48 | EPC warning light | — | W60 | — | 0.5 | M150-C-29 | — | — | — |
| 5 | Wideband lambda heater (Z19) | — | W54 | — | 0.5 | M150-B-8 | — | — | — |
| 51 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 52 | Wideband lambda pump (G39) | — | — | — | — | — | — | — | — |
| 53 | MAF sensor signal (G70) | — | W45 | — | 0.5 | M150-C-14 | — | — | — |
| 54 | Road speed signal (VSS) | — | W66 | — | 0.5 | M150-D-8 | — | — | — |
| 58 | CAN bus low | — | W68 | — | 0.5 | M150-D-18 | — | — | — |
| 60 | CAN bus high | — | W67 | — | 0.5 | M150-D-17 | — | — | — |
| 62 | Battery constant +12V (term 30) | — | W6 | — | 0.85 | M150-D-12 | — | — | — |
| 63 | Post-cat lambda heater (Z29) | — | W55 | — | 0.5 | M150-B-14 | — | — | — |
| 64 | EVAP canister valve (N80) | — | W61 | — | 0.5 | M150-C-30 | — | — | — |
| 65 | Fuel pump relay control | — | W52 | — | 0.5 | M150-B-9 | — | — | — |
| 66 | Secondary-air pump relay (J299) | — | W53 | — | 0.5 | M150-B-15 | — | — | — |
| 68 | Post-cat lambda signal (G130) | — | W63 | — | 0.5 | M150-A-11 | — | — | — |
| 69 | Post-cat lambda signal (G130) | — | W64 | — | 0.5 | M150-A-12 | — | — | — |
| 70 | Wideband lambda Nernst signal (G39) | — | — | — | — | — | — | — | — |
| 71 | Wideband lambda Nernst signal (G39) | — | — | — | — | — | — | — | — |
| 72 | Accelerator pedal position 1 5V supply (G79) | — | W26 | — | 0.5 | M150-A-10 | — | — | — |
| 73 | Accelerator pedal position 2 5V supply (G185) | — | W27 | — | 0.5 | M150-A-18 | — | — | — |
| 82 | Crank position sensor (G28) | — | W31 | — | 0.5 | M150-D-1 | — | — | — |
| 83 | Throttle position sensor 5V supply (G187/G188) | — | W28 | — | 0.5 | M150-A-19 | — | — | — |
| 84 | Throttle position sensor 1 (G187) | — | W48 | — | 0.5 | M150-C-17 | — | — | — |
| 85 | Intake air temperature (G42) | — | W65 | — | 0.5 | M150-D-4 | — | — | — |
| 86 | Camshaft position sensor (G40) | — | W32 | — | 0.5 | M150-D-2 | — | — | — |
| 88 | Injector 4 (N33) | — | W42 | — | 0.5 | M150-C-24 | — | — | — |
| 89 | Injector 2 (N31) | — | W40 | — | 0.5 | M150-C-23 | — | — | — |
| 9 | Secondary-air injection valve (N112) | — | W62 | — | 0.5 | M150-B-22 | — | — | — |
| 90 | Crank position sensor ground (G28) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| 91 | Throttle position sensor ground (G187/G188) | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 92 | Throttle position sensor 2 (G188) | — | W50 | — | 0.5 | M150-D-20 | — | — | — |
| 93 | Engine coolant temperature (G62) | — | W51 | — | 0.5 | M150-D-3 | — | — | — |
| 94 | Ignition coil 4 (N163) | — | W38 | — | 0.5 | M150-C-6 | — | — | — |
| 95 | Ignition coil 2 (N128) | — | W36 | — | 0.5 | M150-C-4 | — | — | — |
| 96 | Injector 1 (N30) | — | W39 | — | 0.5 | M150-C-19 | — | — | — |
| 97 | Injector 3 (N32) | — | W41 | — | 0.5 | M150-C-20 | — | — | — |
| 98 | Cam + boost sensor 5V supply (G40/G31) | — | W29 | — | 0.5 | M150-B-26 | — | — | — |
| 99 | Knock sensor 5V supply (G61/G66) | — | W30 | — | 0.5 | M150-C-2 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W14 | — | 0.5 | OEM-T121-108 | — | — | — |
| 1 | — | — | W15 | — | 0.5 | OEM-T121-29 | — | — | — |
| 1 | — | — | W16 | — | 0.5 | OEM-T121-34 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | OEM-T121-36 | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-T121-90 | — | — | — |
| 1 | — | — | W19 | — | 0.5 | OEM-T121-91 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | M150-A-26 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | M150-A-27 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | M150-A-33 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | M150-A-34 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | M150-D-15 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | M150-D-16 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-T121-121 | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-T121-21 | — | — | — |
| 1 | — | — | W3 | — | 0.85 | M150-B-13 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | M150-B-19 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | M150-C-26 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-T121-1 | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-T121-2 | — | — | — |
| 1 | — | — | W9 | — | 0.85 | M150-A-24 | — | — | — |
| 1 | — | — | W10 | — | 0.85 | M150-A-25 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | M150-A-32 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | M150-C-10 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | M150-C-11 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-T121-1 | ECU 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-T121-101 | Boost pressure sensor (G31) | analog_in | M150-C-15 | Analogue Voltage Input 2 | analog_in | corroborated | |
| OEM-T121-102 | Ignition coil 1 (N127) | ignition_out | M150-C-3 | Low Side Ignition 1 | ignition_out | corroborated | |
| OEM-T121-103 | Ignition coil 3 (N158) | ignition_out | M150-C-5 | Low Side Ignition 3 | ignition_out | corroborated | |
| OEM-T121-104 | Boost control solenoid (N75) | low_side_out | M150-C-21 | Peak Hold Injector 3 | injector_out | corroborated | |
| OEM-T121-105 | Diverter valve (N249) | low_side_out | M150-C-22 | Peak Hold Injector 4 | injector_out | corroborated | |
| OEM-T121-106 | Knock sensor 1 (G61) | knock_in | M150-D-7 | Knock Input 1 | knock_in | corroborated | |
| OEM-T121-107 | Knock sensor 2 (G66) | knock_in | M150-D-13 | Knock Input 2 | knock_in | corroborated | |
| OEM-T121-108 | Sensor ground | 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-T121-115 | VVT camshaft adjustment valve (N205) | low_side_out | M150-C-27 | Peak Hold Injector 5 | injector_out | corroborated | |
| OEM-T121-117 | Throttle motor G186 (+) | hbridge_out | M150-C-18 | Half Bridge Output 1 | hbridge_out | corroborated | |
| OEM-T121-118 | Throttle motor G186 (−) | hbridge_out | M150-C-1 | Half Bridge Output 2 | hbridge_out | corroborated | |
| OEM-T121-121 | ECM + coil power (J271 relay feed) | power_in | M150-B-13 + M150-B-19 + M150-C-26 | Battery Positive + Battery Positive + Battery Positive | power_in | corroborated | |
| OEM-T121-2 | ECU 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-T121-21 | ECM power (J271 relay feed) | power_in | M150-B-13 + M150-B-19 + M150-C-26 | Battery Positive + Battery Positive + Battery Positive | power_in | corroborated | |
| OEM-T121-27 | MAF sensor supply (G70) | power_in | — | — | — | corroborated | |
| OEM-T121-29 | MAF sensor ground (G70) | 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-T121-3 | Ignition switch +12V (term 15) | digital_in | — | — | — | corroborated | |
| OEM-T121-33 | Accelerator pedal position 1 (G79) | analog_in | M150-C-16 | Analogue Voltage Input 3 | analog_in | corroborated | |
| OEM-T121-34 | Accelerator pedal position 1 ground (G79) | 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-T121-35 | Accelerator pedal position 2 (G185) | analog_in | M150-C-25 | Analogue Voltage Input 5 | analog_in | corroborated | |
| OEM-T121-36 | Accelerator pedal position 2 ground (G185) | 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-T121-37 | Engine speed signal (tacho to cluster) | tacho_out | — | — | — | corroborated | |
| OEM-T121-43 | K-line diagnostics (OBD pin 7) | serial | — | — | — | corroborated | |
| OEM-T121-47 | Check engine light (MIL) | low_side_out | M150-C-28 | Peak Hold Injector 6 | injector_out | corroborated | |
| OEM-T121-48 | EPC warning light | low_side_out | M150-C-29 | Peak Hold Injector 7 | injector_out | corroborated | |
| OEM-T121-5 | Wideband lambda heater (Z19) | low_side_out | M150-B-8 | Low Side Injector 5 | injector_out | corroborated | |
| OEM-T121-51 | Wideband lambda pump (G39) | wb_ip | — | — | — | corroborated | |
| OEM-T121-52 | Wideband lambda pump (G39) | wb_ip | — | — | — | corroborated | |
| OEM-T121-53 | MAF sensor signal (G70) | analog_in | M150-C-14 | Analogue Voltage Input 1 | analog_in | corroborated | |
| OEM-T121-54 | Road speed signal (VSS) | digital_in | M150-D-8 | Universal Digital Input 3 | digital_in | corroborated | |
| OEM-T121-58 | CAN bus low | can_l | M150-D-18 | CAN Bus 1 Low | can_l | corroborated | |
| OEM-T121-60 | CAN bus high | can_h | M150-D-17 | CAN Bus 1 High | can_h | corroborated | |
| OEM-T121-62 | Battery constant +12V (term 30) | power_in | M150-D-12 | Battery Backup | power_in | corroborated | |
| OEM-T121-63 | Post-cat lambda heater (Z29) | low_side_out | M150-B-14 | Low Side Injector 6 | injector_out | corroborated | |
| OEM-T121-64 | EVAP canister valve (N80) | low_side_out | M150-C-30 | Peak Hold Injector 8 | injector_out | corroborated | |
| OEM-T121-65 | Fuel pump relay control | low_side_out | M150-B-9 | Low Side Injector 3 | injector_out | corroborated | |
| OEM-T121-66 | Secondary-air pump relay (J299) | low_side_out | M150-B-15 | Low Side Injector 4 | injector_out | corroborated | |
| OEM-T121-68 | Post-cat lambda signal (G130) | lambda_nb_in | M150-A-11 | Lambda Narrow Input 1 | lambda_nb_in | corroborated | |
| OEM-T121-69 | Post-cat lambda signal (G130) | lambda_nb_in | M150-A-12 | Lambda Narrow Input 2 | lambda_nb_in | corroborated | |
| OEM-T121-70 | Wideband lambda Nernst signal (G39) | wb_vs | — | — | — | corroborated | |
| OEM-T121-71 | Wideband lambda Nernst signal (G39) | wb_vs | — | — | — | corroborated | |
| OEM-T121-72 | Accelerator pedal position 1 5V supply (G79) | vref | M150-A-10 | Sensor 5.0V C1 | vref | corroborated | |
| OEM-T121-73 | Accelerator pedal position 2 5V supply (G185) | vref | M150-A-18 | Sensor 5.0V C2 | vref | corroborated | |
| OEM-T121-82 | Crank position sensor (G28) | trigger_in | M150-D-1 | Universal Digital Input 1 | digital_in | corroborated | |
| OEM-T121-83 | Throttle position sensor 5V supply (G187/G188) | vref | M150-A-19 | Sensor 5.0V B2 | vref | corroborated | |
| OEM-T121-84 | Throttle position sensor 1 (G187) | analog_in | M150-C-17 | Analogue Voltage Input 4 | analog_in | corroborated | |
| OEM-T121-85 | Intake air temperature (G42) | temp_in | M150-D-4 | Analogue Temperature Input 2 | temp_in | corroborated | |
| OEM-T121-86 | Camshaft position sensor (G40) | trigger_in | M150-D-2 | Universal Digital Input 2 | digital_in | corroborated | |
| OEM-T121-88 | Injector 4 (N33) | injector_out | M150-C-24 | Low Side Injector 2 | injector_out | corroborated | |
| OEM-T121-89 | Injector 2 (N31) | injector_out | M150-C-23 | Low Side Injector 1 | injector_out | corroborated | |
| OEM-T121-9 | Secondary-air injection valve (N112) | low_side_out | M150-B-22 | Peak Hold Injector 9 | injector_out | corroborated | |
| OEM-T121-90 | Crank position sensor ground (G28) | 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-T121-91 | Throttle position sensor ground (G187/G188) | 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-T121-92 | Throttle position sensor 2 (G188) | analog_in | M150-D-20 | Analogue Voltage Input 6 | analog_in | corroborated | |
| OEM-T121-93 | Engine coolant temperature (G62) | temp_in | M150-D-3 | Analogue Temperature Input 1 | temp_in | corroborated | |
| OEM-T121-94 | Ignition coil 4 (N163) | ignition_out | M150-C-6 | Low Side Ignition 4 | ignition_out | corroborated | |
| OEM-T121-95 | Ignition coil 2 (N128) | ignition_out | M150-C-4 | Low Side Ignition 2 | ignition_out | corroborated | |
| OEM-T121-96 | Injector 1 (N30) | injector_out | M150-C-19 | Peak Hold Injector 1 | injector_out | corroborated | |
| OEM-T121-97 | Injector 3 (N32) | injector_out | M150-C-20 | Peak Hold Injector 2 | injector_out | corroborated | |
| OEM-T121-98 | Cam + boost sensor 5V supply (G40/G31) | vref | M150-B-26 | Sensor 5.0V A | vref | corroborated | |
| OEM-T121-99 | Knock sensor 5V supply (G61/G66) | vref | M150-C-2 | Sensor 5.0V A | vref | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-T121-121 | SP-14V-1 | 0.85 | no route | ECM + coil power (J271 relay feed) | — | |
| W2 | OEM-T121-21 | SP-14V-1 | 0.85 | no route | ECM power (J271 relay feed) | — | |
| W3 | SP-14V-1 | M150-B-13 | 0.85 | no route | Battery Positive | — | |
| W4 | SP-14V-1 | M150-B-19 | 0.85 | no route | Battery Positive | — | |
| W5 | SP-14V-1 | M150-C-26 | 0.85 | no route | Battery Positive | — | |
| W6 | OEM-T121-62 | M150-D-12 | 0.85 | no route | Battery constant +12V (term 30) | — | |
| W7 | OEM-T121-1 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W8 | OEM-T121-2 | SP-GND-1 | 0.85 | no route | ECU ground | — | |
| W9 | SP-GND-1 | M150-A-24 | 0.85 | no route | Battery Negative 3 | — | |
| W10 | SP-GND-1 | M150-A-25 | 0.85 | no route | Battery Negative 4 | — | |
| W11 | SP-GND-1 | M150-A-32 | 0.85 | no route | Battery Negative 5 | — | |
| W12 | SP-GND-1 | M150-C-10 | 0.85 | no route | Battery Negative 1 | — | |
| W13 | SP-GND-1 | M150-C-11 | 0.85 | no route | Battery Negative 2 | — | |
| W14 | OEM-T121-108 | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W15 | OEM-T121-29 | SP-0V-1 | 0.5 | no route | MAF sensor ground (G70) | — | |
| W16 | OEM-T121-34 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 1 ground (G79) | — | |
| W17 | OEM-T121-36 | SP-0V-1 | 0.5 | no route | Accelerator pedal position 2 ground (G185) | — | |
| W18 | OEM-T121-90 | SP-0V-1 | 0.5 | no route | Crank position sensor ground (G28) | — | |
| W19 | OEM-T121-91 | SP-0V-1 | 0.5 | no route | Throttle position sensor ground (G187/G188) | — | |
| W20 | SP-0V-1 | M150-A-26 | 0.5 | no route | Sensor 0V C1 | — | |
| W21 | SP-0V-1 | M150-A-27 | 0.5 | no route | Sensor 0V C2 | — | |
| W22 | SP-0V-1 | M150-A-33 | 0.5 | no route | Sensor 0V B1 | — | |
| W23 | SP-0V-1 | M150-A-34 | 0.5 | no route | Sensor 0V A1 | — | |
| W24 | SP-0V-1 | M150-D-15 | 0.5 | no route | Sensor 0V A | — | |
| W25 | SP-0V-1 | M150-D-16 | 0.5 | no route | Sensor 0V B | — | |
| W26 | OEM-T121-72 | M150-A-10 | 0.5 | no route | Accelerator pedal position 1 5V supply (G79) | — | |
| W27 | OEM-T121-73 | M150-A-18 | 0.5 | no route | Accelerator pedal position 2 5V supply (G185) | — | |
| W28 | OEM-T121-83 | M150-A-19 | 0.5 | no route | Throttle position sensor 5V supply (G187/G188) | — | |
| W29 | OEM-T121-98 | M150-B-26 | 0.5 | no route | Cam + boost sensor 5V supply (G40/G31) | — | |
| W30 | OEM-T121-99 | M150-C-2 | 0.5 | no route | Knock sensor 5V supply (G61/G66) | — | |
| W31 | OEM-T121-82 | M150-D-1 | 0.5 | no route | Crank position sensor (G28) | — | |
| W32 | OEM-T121-86 | M150-D-2 | 0.5 | no route | Camshaft position sensor (G40) | — | |
| W33 | OEM-T121-106 | M150-D-7 | 0.5 | no route | Knock sensor 1 (G61) | — | |
| W34 | OEM-T121-107 | M150-D-13 | 0.5 | no route | Knock sensor 2 (G66) | — | |
| W35 | OEM-T121-102 | M150-C-3 | 0.5 | no route | Ignition coil 1 (N127) | — | |
| W36 | OEM-T121-95 | M150-C-4 | 0.5 | no route | Ignition coil 2 (N128) | — | |
| W37 | OEM-T121-103 | M150-C-5 | 0.5 | no route | Ignition coil 3 (N158) | — | |
| W38 | OEM-T121-94 | M150-C-6 | 0.5 | no route | Ignition coil 4 (N163) | — | |
| W39 | OEM-T121-96 | M150-C-19 | 0.5 | no route | Injector 1 (N30) | — | |
| W40 | OEM-T121-89 | M150-C-23 | 0.5 | no route | Injector 2 (N31) | — | |
| W41 | OEM-T121-97 | M150-C-20 | 0.5 | no route | Injector 3 (N32) | — | |
| W42 | OEM-T121-88 | M150-C-24 | 0.5 | no route | Injector 4 (N33) | — | |
| W43 | OEM-T121-118 | M150-C-1 | 0.5 | no route | Throttle motor G186 (−) | — | |
| W44 | OEM-T121-117 | M150-C-18 | 0.5 | no route | Throttle motor G186 (+) | — | |
| W45 | OEM-T121-53 | M150-C-14 | 0.5 | no route | MAF sensor signal (G70) | — | |
| W46 | OEM-T121-101 | M150-C-15 | 0.5 | no route | Boost pressure sensor (G31) | — | |
| W47 | OEM-T121-33 | M150-C-16 | 0.5 | no route | Accelerator pedal position 1 (G79) | — | |
| W48 | OEM-T121-84 | M150-C-17 | 0.5 | no route | Throttle position sensor 1 (G187) | — | |
| W49 | OEM-T121-35 | M150-C-25 | 0.5 | no route | Accelerator pedal position 2 (G185) | — | |
| W50 | OEM-T121-92 | M150-D-20 | 0.5 | no route | Throttle position sensor 2 (G188) | — | |
| W51 | OEM-T121-93 | M150-D-3 | 0.5 | no route | Engine coolant temperature (G62) | — | |
| W52 | OEM-T121-65 | M150-B-9 | 0.5 | no route | Fuel pump relay control | — | |
| W53 | OEM-T121-66 | M150-B-15 | 0.5 | no route | Secondary-air pump relay (J299) | — | |
| W54 | OEM-T121-5 | M150-B-8 | 0.5 | no route | Wideband lambda heater (Z19) | — | |
| W55 | OEM-T121-63 | M150-B-14 | 0.5 | no route | Post-cat lambda heater (Z29) | — | |
| W56 | OEM-T121-104 | M150-C-21 | 0.5 | no route | Boost control solenoid (N75) | — | |
| W57 | OEM-T121-105 | M150-C-22 | 0.5 | no route | Diverter valve (N249) | — | |
| W58 | OEM-T121-115 | M150-C-27 | 0.5 | no route | VVT camshaft adjustment valve (N205) | — | |
| W59 | OEM-T121-47 | M150-C-28 | 0.5 | no route | Check engine light (MIL) | — | |
| W60 | OEM-T121-48 | M150-C-29 | 0.5 | no route | EPC warning light | — | |
| W61 | OEM-T121-64 | M150-C-30 | 0.5 | no route | EVAP canister valve (N80) | — | |
| W62 | OEM-T121-9 | M150-B-22 | 0.5 | no route | Secondary-air injection valve (N112) | — | |
| W63 | OEM-T121-68 | M150-A-11 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W64 | OEM-T121-69 | M150-A-12 | 0.5 | no route | Post-cat lambda signal (G130) | — | |
| W65 | OEM-T121-85 | M150-D-4 | 0.5 | no route | Intake air temperature (G42) | — | |
| W66 | OEM-T121-54 | M150-D-8 | 0.5 | no route | Road speed signal (VSS) | — | |
| W67 | OEM-T121-60 | M150-D-17 | 0.5 | no route | CAN bus high | — | |
| W68 | OEM-T121-58 | M150-D-18 | 0.5 | no route | CAN bus low | — |
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 (17)
| Severity | Code | Subject | Message |
|---|---|---|---|
| error | REQUIRED_UNMAPPED | OEM-T121-3 | Required OEM function "Ignition switch +12V (term 15)" (digital_in) is not connected to the new ECU. |
| warn | DBW_MOTOR_CURRENT | M150-C-1 | Cannot confirm M150 can drive the throttle motor: M150-C-1 "Half Bridge Output 2" is rated 12.0 A peak, but the motor stall current at OEM-T121-118 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | DBW_MOTOR_CURRENT | M150-C-18 | Cannot confirm M150 can drive the throttle motor: M150-C-18 "Half Bridge Output 1" is rated 12.0 A peak, but the motor stall current at OEM-T121-117 is unknown. Add the motor's peak current from a source, or measure the motor resistance: peak ≈ 14 V ÷ R (Hondata measured 4.9 A for a Civic Si body, 10.4 A for a ZDX body; holding current is about 1 A). |
| warn | NET_FAMILY | OEM-T121-82 ↔ M150-D-1 | OEM-T121-82 "Crank position sensor (G28)" [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. |
| warn | NET_FAMILY | OEM-T121-86 ↔ M150-D-2 | OEM-T121-86 "Camshaft position sensor (G40)" [trigger_in] is wired to M150-D-2 "Universal Digital Input 2" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| info | NET_FAMILY | OEM-T121-104 ↔ M150-C-21 | OEM-T121-104 "Boost control solenoid (N75)" [low_side_out] is wired to M150-C-21 "Peak Hold Injector 3" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-105 ↔ M150-C-22 | OEM-T121-105 "Diverter valve (N249)" [low_side_out] is wired to M150-C-22 "Peak Hold Injector 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-115 ↔ M150-C-27 | OEM-T121-115 "VVT camshaft adjustment valve (N205)" [low_side_out] is wired to M150-C-27 "Peak Hold Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-47 ↔ M150-C-28 | OEM-T121-47 "Check engine light (MIL)" [low_side_out] is wired to M150-C-28 "Peak Hold Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-48 ↔ M150-C-29 | OEM-T121-48 "EPC warning light" [low_side_out] is wired to M150-C-29 "Peak Hold Injector 7" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-5 ↔ M150-B-8 | OEM-T121-5 "Wideband lambda heater (Z19)" [low_side_out] is wired to M150-B-8 "Low Side Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-63 ↔ M150-B-14 | OEM-T121-63 "Post-cat lambda heater (Z29)" [low_side_out] is wired to M150-B-14 "Low Side Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-64 ↔ M150-C-30 | OEM-T121-64 "EVAP canister valve (N80)" [low_side_out] is wired to M150-C-30 "Peak Hold Injector 8" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-65 ↔ M150-B-9 | OEM-T121-65 "Fuel pump relay control" [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-T121-66 ↔ M150-B-15 | OEM-T121-66 "Secondary-air pump relay (J299)" [low_side_out] is wired to M150-B-15 "Low Side Injector 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-T121-9 ↔ M150-B-22 | OEM-T121-9 "Secondary-air injection valve (N112)" [low_side_out] is wired to M150-B-22 "Peak Hold Injector 9" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | UNMAPPED | OEM | 7 optional OEM pins are not mapped: OEM-T121-27 MAF sensor supply (G70); OEM-T121-37 Engine speed signal (tacho to cluster); OEM-T121-43 K-line diagnostics (OBD pin 7); OEM-T121-51 Wideband lambda pump (G39); OEM-T121-52 Wideband lambda pump (G39); OEM-T121-70 Wideband lambda Nernst signal (G39); OEM-T121-71 Wideband lambda Nernst signal (G39) |
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-T121 3: Ignition switch +12V (term 15): key-on 12 V sense — optional in a swap (the main relay is energized from keyed 12 V, not from this pin); MoTeC M150 has no dedicated key-on input Not wired: - OEM-T121 37: Engine speed signal (tacho to cluster): no free tacho/frequency_out/low_side/ls_hs on MoTeC M150 - OEM-T121 51: Wideband lambda pump (G39): no free wb_ip on MoTeC M150 - OEM-T121 52: Wideband lambda pump (G39): no free wb_ip on MoTeC M150 - OEM-T121 70: Wideband lambda Nernst signal (G39): no free wb_vs on MoTeC M150 - OEM-T121 71: Wideband lambda Nernst signal (G39): no free wb_vs on MoTeC M150 - OEM-T121 43: K-line diagnostics (OBD pin 7): no free k_line on MoTeC M150 - OEM-T121 27: MAF sensor supply (G70): no rule for class sensor_supply_in; 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 |
| 3 | community_copy | NefMoto: ME7.5 ECU bench-flashing power/ground pins | http://nefmoto.com/wiki/index.php?title=ECU_Bench_Flashing | — | — | — |
| 3 | community_copy | vwressources: Bosch Motronic ME7.5 (AMK/ARY/AUQ/ARX/AUM) T121 pinout | https://www.vwressources.planethoster.world/me75_pinout.html | — | — | — |