MX-5 Miata NA8 1996-97 (BP-ZE, 1.8, OBD-II) → MoTeC M190 13190 (auto)
MX-5 Miata NA8 1996-97 (BP-ZE, 1.8, OBD-II) — MoTeC — M190
⚠ NOT CHECKED. Don't build from this.
Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-12
Before you start
Not confident with automotive wiring? Have a professional harness builder or tuner do it, or check your work before first power-up. A wiring mistake can damage the ECU, the engine or the car, or start a fire.
| Status | draft · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 62 wires · 9 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-4-B | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | SP-14V-1 | M190-B-H | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | M190-B-J | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | M190-B-K | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | M190-B-L | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-4-I | M190-A-38 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-4-C | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-4-D | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | OEM-4-K | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | M190-B-G | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | M190-B-W | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | M190-B-X | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | M190-B-Y | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | SP-GND-1 | M190-B-Z | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-GND-1 | M190-B-c | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | OEM-3-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-4-H | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | SP-0V-1 | M190-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | SP-0V-1 | M190-A-19 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | SP-0V-1 | M190-A-20 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | SP-0V-1 | M190-C-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | SP-0V-1 | M190-C-15 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | SP-0V-1 | M190-C-23 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | SP-0V-1 | M190-C-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-3-I | M190-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-4-E | M190-C-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-4-G | M190-C-32 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-4-F | M190-C-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-4-N | M190-C-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-4-R | M190-C-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-4-U | M190-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-4-V | M190-A-3 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-4-W | M190-B-U | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-4-X | M190-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-3-B | M190-C-42 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-3-F | M190-C-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-3-G | M190-C-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-1-A | M190-A-2 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-1-B | M190-B-V | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-1-G | M190-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-1-U | M190-B-b | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-3-M | M190-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-1-E | M190-B-S | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-4-J | M190-A-48 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-4-O | M190-B-a | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-4-P | M190-A-40 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-4-Q | M190-B-T | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-4-T | M190-A-25 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-3-H | M190-C-35 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-3-N | M190-C-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-3-C | M190-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-3-D | M190-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-3-K | M190-C-39 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W55 | OEM-3-J | M190-C-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W56 | OEM-1-M | M190-C-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W57 | OEM-1-C | M190-A-21 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W58 | OEM-1-K | M190-A-14 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W59 | OEM-1-L | M190-A-30 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W60 | OEM-1-Q | M190-A-37 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W61 | OEM-3-L | M190-C-40 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W62 | OEM-3-P | M190-C-47 | 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 | M190-A-16 | M190-A-18 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | M190-A-16 | M190-B-G | open (OL) | 5 V sensor reference must not touch power ground | |
| 3 | M190-A-16 | M190-A-38 | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 4 | M190-A-16 | M190-B-H | open (OL) | 5 V sensor reference must not touch +12 V supply | |
| 5 | M190-A-18 | M190-A-38 | open (OL) | sensor ground must not touch +12 V supply | |
| 6 | M190-A-18 | M190-B-H | open (OL) | sensor ground must not touch +12 V supply | |
| 7 | M190-B-G | M190-A-38 | open (OL) | power ground must not touch +12 V supply | |
| 8 | M190-B-G | M190-B-H | open (OL) | power ground must not touch +12 V supply |
If any reading doesn't match, stop and get help before powering up.
Revisions
| Rev | Label | By | Date |
|---|---|---|---|
| No revisions yet. | |||
Schematic
Connectors
M190-A
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Low Side Injector 3 | — | W41 | — | 0.5 | OEM-1-G | — | — | — |
| 10 | Low Side Injector 8 | — | — | — | — | — | — | — | — |
| 11 | Peak Hold Injector 1 | — | W32 | — | 0.5 | OEM-4-U | — | — | — |
| 12 | Peak Hold Injector 2 | — | W35 | — | 0.5 | OEM-4-X | — | — | — |
| 13 | Analogue Voltage Input 11 | — | — | — | — | — | — | — | — |
| 14 | Digital Input 2 | — | W58 | — | 0.5 | OEM-1-K | — | — | — |
| 15 | RS232 Receive | — | — | — | — | — | — | — | — |
| 16 | Sensor 5.0V C3 | — | W26 | — | 0.5 | OEM-3-I | — | — | — |
| 17 | Low Side Injector 11 | — | — | — | — | — | — | — | — |
| 18 | Sensor 0V C1 | — | W19 | — | 0.5 | SP-0V-1 | — | — | — |
| 19 | Sensor 0V C2 | — | W20 | — | 0.5 | SP-0V-1 | — | — | — |
| 2 | Low Side Injector 2 | — | W39 | — | 0.5 | OEM-1-A | — | — | — |
| 20 | Sensor 0V C3 | — | W21 | — | 0.5 | SP-0V-1 | — | — | — |
| 21 | Digital Input 1 | — | W57 | — | 0.5 | OEM-1-C | — | — | — |
| 22 | LIN Bus | — | — | — | — | — | — | — | — |
| 23 | RS232 Transmit | — | — | — | — | — | — | — | — |
| 24 | CAN Bus 2 High | — | — | — | — | — | — | — | — |
| 25 | Low Side Injector 7 | — | W49 | — | 0.5 | OEM-4-T | — | — | — |
| 26 | Peak Hold Injector 3 | — | — | — | — | — | — | — | — |
| 27 | Analogue Voltage Input 15 | — | — | — | — | — | — | — | — |
| 28 | Analogue Voltage Input 16 | — | — | — | — | — | — | — | — |
| 29 | Analogue Voltage Input 17 | — | — | — | — | — | — | — | — |
| 3 | Low Side Injector 1 | — | W33 | — | 0.5 | OEM-4-V | — | — | — |
| 30 | Digital Input 3 | — | W59 | — | 0.5 | OEM-1-L | — | — | — |
| 31 | CAN Bus 2 Low | — | — | — | — | — | — | — | — |
| 32 | Low Side Injector 10 | — | — | — | — | — | — | — | — |
| 33 | Peak Hold Injector 4 | — | — | — | — | — | — | — | — |
| 34 | Analogue Voltage Input 13 | — | — | — | — | — | — | — | — |
| 35 | Analogue Voltage Input 12 | — | — | — | — | — | — | — | — |
| 36 | Peak Hold Injector 7 | — | — | — | — | — | — | — | — |
| 37 | Digital Input 4 | — | W60 | — | 0.5 | OEM-1-Q | — | — | — |
| 38 | Battery Backup | — | W6 | — | 0.85 | OEM-4-I | — | — | — |
| 39 | CAN Bus 3 High | — | — | — | — | — | — | — | — |
| 4 | Low Side Injector 12 | — | — | — | — | — | — | — | — |
| 40 | Low Side Injector 6 | — | W47 | — | 0.5 | OEM-4-P | — | — | — |
| 41 | Analogue Voltage Input 14 | — | — | — | — | — | — | — | — |
| 42 | Peak Hold Injector 9 | — | — | — | — | — | — | — | — |
| 43 | Peak Hold Injector 10 | — | — | — | — | — | — | — | — |
| 44 | Peak Hold Injector 6 | — | — | — | — | — | — | — | — |
| 45 | Peak Hold Injector 5 | — | — | — | — | — | — | — | — |
| 46 | CAN Bus 3 Low | — | — | — | — | — | — | — | — |
| 47 | Low Side Injector 9 | — | — | — | — | — | — | — | — |
| 48 | Low Side Injector 5 | — | W45 | — | 0.5 | OEM-4-J | — | — | — |
| 49 | Peak Hold Injector 11 | — | — | — | — | — | — | — | — |
| 5 | Low Side Injector 4 | — | W43 | — | 0.5 | OEM-3-M | — | — | — |
| 50 | Peak Hold Injector 12 | — | — | — | — | — | — | — | — |
| 51 | Peak Hold Injector 8 | — | — | — | — | — | — | — | — |
| 52 | Low Side Ignition 12 | — | — | — | — | — | — | — | — |
| 53 | Low Side Ignition 9 | — | — | — | — | — | — | — | — |
| 54 | Low Side Ignition 10 | — | — | — | — | — | — | — | — |
| 55 | Low Side Ignition 11 | — | — | — | — | — | — | — | — |
| 6 | Lambda Narrow Input 2 | — | W53 | — | 0.5 | OEM-3-D | — | — | — |
| 7 | Lambda Narrow Input 1 | — | W52 | — | 0.5 | OEM-3-C | — | — | — |
| 8 | Sensor 5.0V C1 | — | — | — | — | — | — | — | — |
| 9 | Sensor 5.0V C2 | — | — | — | — | — | — | — | — |
M190-B
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Half Bridge Output 1 | — | — | — | — | — | — | — | — |
| B | Half Bridge Output 2 | — | — | — | — | — | — | — | — |
| C | Half Bridge Output 3 | — | — | — | — | — | — | — | — |
| D | Half Bridge Output 4 | — | — | — | — | — | — | — | — |
| E | Half Bridge Output 5 | — | — | — | — | — | — | — | — |
| F | Half Bridge Output 6 | — | — | — | — | — | — | — | — |
| G | Battery Negative 1 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| H | Battery Positive 1 | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| J | Battery Positive 2 | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| K | Battery Positive 3 | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| L | Battery Positive 4 | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| M | Half Bridge Output 10 | — | — | — | — | — | — | — | — |
| N | Half Bridge Output 9 | — | — | — | — | — | — | — | — |
| P | Half Bridge Output 8 | — | — | — | — | — | — | — | — |
| R | Half Bridge Output 7 | — | — | — | — | — | — | — | — |
| S | Low Side Injector 4 | — | W44 | — | 0.5 | OEM-1-E | — | — | — |
| T | Low Side Injector 6 | — | W48 | — | 0.5 | OEM-4-Q | — | — | — |
| U | Low Side Injector 1 | — | W34 | — | 0.5 | OEM-4-W | — | — | — |
| V | Low Side Injector 2 | — | W40 | — | 0.5 | OEM-1-B | — | — | — |
| W | Battery Negative 2 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| X | Battery Negative 3 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| Y | Battery Negative 4 | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| Z | Battery Negative 5 | — | W15 | — | 0.85 | SP-GND-1 | — | — | — |
| a | Low Side Injector 5 | — | W46 | — | 0.5 | OEM-4-O | — | — | — |
| b | Low Side Injector 3 | — | W42 | — | 0.5 | OEM-1-U | — | — | — |
| c | Battery Negative 6 | — | W16 | — | 0.85 | SP-GND-1 | — | — | — |
M190-C
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Low Side Ignition 4 | — | — | — | — | — | — | — | — |
| 10 | Universal Digital Input 8 | — | — | — | — | — | — | — | — |
| 11 | Analogue Voltage Input 6 | — | — | — | — | — | — | — | — |
| 12 | Analogue Voltage Input 7 | — | — | — | — | — | — | — | — |
| 13 | Analogue Voltage Input 9 | — | — | — | — | — | — | — | — |
| 14 | Sensor 0V A1 | — | W22 | — | 0.5 | SP-0V-1 | — | — | — |
| 15 | Sensor 0V A2 | — | W23 | — | 0.5 | SP-0V-1 | — | — | — |
| 16 | Low Side Ignition 1 | — | W30 | — | 0.5 | OEM-4-N | — | — | — |
| 17 | Universal Digital Input 7 | — | — | — | — | — | — | — | — |
| 18 | Universal Digital Input 1 | — | W27 | — | 0.5 | OEM-4-E | — | — | — |
| 19 | Universal Digital Input 12 | — | — | — | — | — | — | — | — |
| 2 | Low Side Ignition 3 | — | — | — | — | — | — | — | — |
| 20 | Universal Digital Input 11 | — | — | — | — | — | — | — | — |
| 21 | Universal Digital Input 10 | — | — | — | — | — | — | — | — |
| 22 | Universal Digital Input 9 | — | — | — | — | — | — | — | — |
| 23 | Sensor 0V B1 | — | W24 | — | 0.5 | SP-0V-1 | — | — | — |
| 24 | CAN Bus 1 High | — | — | — | — | — | — | — | — |
| 25 | Universal Digital Input 3 | — | W29 | — | 0.5 | OEM-4-F | — | — | — |
| 26 | Ethernet Receive - | — | — | — | — | — | — | — | — |
| 27 | Universal Digital Input 4 | — | W56 | — | 0.5 | OEM-1-M | — | — | — |
| 28 | Analogue Voltage Input 4 | — | W51 | — | 0.5 | OEM-3-N | — | — | — |
| 29 | Analogue Voltage Input 5 | — | W55 | — | 0.5 | OEM-3-J | — | — | — |
| 3 | Low Side Ignition 8 | — | — | — | — | — | — | — | — |
| 30 | Sensor 0V B2 | — | W25 | — | 0.5 | SP-0V-1 | — | — | — |
| 31 | CAN Bus 1 Low | — | — | — | — | — | — | — | — |
| 32 | Universal Digital Input 2 | — | W28 | — | 0.5 | OEM-4-G | — | — | — |
| 33 | Ethernet Receive + | — | — | — | — | — | — | — | — |
| 34 | Ethernet Transmit - | — | — | — | — | — | — | — | — |
| 35 | Analogue Voltage Input 3 | — | W50 | — | 0.5 | OEM-3-H | — | — | — |
| 36 | Analogue Voltage Input 2 | — | W37 | — | 0.5 | OEM-3-F | — | — | — |
| 37 | Analogue Temperature Input 1 | — | W38 | — | 0.5 | OEM-3-G | — | — | — |
| 38 | Analogue Temperature Input 3 | — | — | — | — | — | — | — | — |
| 39 | Analogue Temperature Input 2 | — | W54 | — | 0.5 | OEM-3-K | — | — | — |
| 4 | Low Side Ignition 6 | — | — | — | — | — | — | — | — |
| 40 | Universal Digital Input 5 | — | W61 | — | 0.5 | OEM-3-L | — | — | — |
| 41 | Ethernet Transmit + | — | — | — | — | — | — | — | — |
| 42 | Analogue Voltage Input 1 | — | W36 | — | 0.5 | OEM-3-B | — | — | — |
| 43 | Knock Input 3 | — | — | — | — | — | — | — | — |
| 44 | Knock Input 2 | — | — | — | — | — | — | — | — |
| 45 | Analogue Temperature Input 5 | — | — | — | — | — | — | — | — |
| 46 | Analogue Temperature Input 4 | — | — | — | — | — | — | — | — |
| 47 | Universal Digital Input 6 | — | W62 | — | 0.5 | OEM-3-P | — | — | — |
| 48 | Sensor 5.0V A1 | — | — | — | — | — | — | — | — |
| 49 | Knock Input 4 | — | — | — | — | — | — | — | — |
| 5 | Low Side Ignition 5 | — | — | — | — | — | — | — | — |
| 50 | Sensor 5.0V B1 | — | — | — | — | — | — | — | — |
| 51 | Knock Input 1 | — | — | — | — | — | — | — | — |
| 52 | Analogue Temperature Input 6 | — | — | — | — | — | — | — | — |
| 53 | Sensor 5.0V A2 | — | — | — | — | — | — | — | — |
| 54 | Sensor 6.3V | — | — | — | — | — | — | — | — |
| 55 | Sensor 5.0V B2 | — | — | — | — | — | — | — | — |
| 6 | Analogue Voltage Input 8 | — | — | — | — | — | — | — | — |
| 7 | Analogue Voltage Input 10 | — | — | — | — | — | — | — | — |
| 8 | Low Side Ignition 2 | — | W31 | — | 0.5 | OEM-4-R | — | — | — |
| 9 | Low Side Ignition 7 | — | — | — | — | — | — | — | — |
OEM-1
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Cooling fan relay (low-side) | — | W39 | — | 0.5 | M190-A-2 | — | — | — |
| B | A/C condenser fan relay | — | W40 | — | 0.5 | M190-B-V | — | — | — |
| C | Starter input (12V while cranking) | — | W57 | — | 0.5 | M190-A-21 | — | — | — |
| E | Check engine light (MIL) | — | W44 | — | 0.5 | M190-B-S | — | — | — |
| G | A/C clutch relay | — | W41 | — | 0.5 | M190-A-1 | — | — | — |
| K | A/C pressure switch (A/C request) | — | W58 | — | 0.5 | M190-A-14 | — | — | — |
| L | Clutch switch | — | W59 | — | 0.5 | M190-A-30 | — | — | — |
| M | Vehicle speed sensor (VSS) | — | W56 | — | 0.5 | M190-C-27 | — | — | — |
| Q | Brake switch | — | W60 | — | 0.5 | M190-A-37 | — | — | — |
| U | Fuel pump relay (low-side) | — | W42 | — | 0.5 | M190-B-b | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| B | MAF sensor input | — | W36 | — | 0.5 | M190-C-42 | — | — | — |
| C | Front O2 sensor input | — | W52 | — | 0.5 | M190-A-7 | — | — | — |
| D | Rear O2 sensor input | — | W53 | — | 0.5 | M190-A-6 | — | — | — |
| F | Throttle position (TPS) | — | W37 | — | 0.5 | M190-C-36 | — | — | — |
| G | Engine coolant temp (CLT) | — | W38 | — | 0.5 | M190-C-37 | — | — | — |
| H | EGR boost sensor | — | W50 | — | 0.5 | M190-C-35 | — | — | — |
| I | +5V sensor reference | — | W26 | — | 0.5 | M190-A-16 | — | — | — |
| J | EGR valve position sensor | — | W55 | — | 0.5 | M190-C-29 | — | — | — |
| K | Intake air temp (IAT) | — | W54 | — | 0.5 | M190-C-39 | — | — | — |
| L | Idle switch (closed throttle) | — | W61 | — | 0.5 | M190-C-40 | — | — | — |
| M | Front O2 heater control | — | W43 | — | 0.5 | M190-A-5 | — | — | — |
| N | EGR boost sensor (2nd channel) | — | W51 | — | 0.5 | M190-C-28 | — | — | — |
| O | Sensor ground | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Power steering pressure switch | — | W62 | — | 0.5 | M190-C-47 | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Chassis ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| B | ECU power +12V (main relay) | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| C | Chassis ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| D | Chassis ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| E | Crank position (CKP) sensor | — | W27 | — | 0.5 | M190-C-18 | — | — | — |
| F | CAS SGT (cam trigger) | — | W29 | — | 0.5 | M190-C-25 | — | — | — |
| G | CAS SGC (cam sync) | — | W28 | — | 0.5 | M190-C-32 | — | — | — |
| H | Crank pickup timing ground (CKP gnd) | — | W18 | — | 0.5 | SP-0V-1 | — | — | — |
| I | Permanent +12V (battery) | — | W6 | — | 0.85 | M190-A-38 | — | — | — |
| J | PRC solenoid (FPR control) | — | W45 | — | 0.5 | M190-A-48 | — | — | — |
| K | Chassis ground | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| L | Tachometer output | — | — | — | — | — | — | — | — |
| N | Ignition coil trigger (cyl 1&4) | — | W30 | — | 0.5 | M190-C-16 | — | — | — |
| O | EGR vent solenoid | — | W46 | — | 0.5 | M190-B-a | — | — | — |
| P | EGR vacuum solenoid | — | W47 | — | 0.5 | M190-A-40 | — | — | — |
| Q | Idle air control (IAC) valve | — | W48 | — | 0.5 | M190-B-T | — | — | — |
| R | Ignition coil trigger (cyl 2&3) | — | W31 | — | 0.5 | M190-C-8 | — | — | — |
| T | EVAP purge solenoid | — | W49 | — | 0.5 | M190-A-25 | — | — | — |
| U | Injector 1 (cyl 1) | — | W32 | — | 0.5 | M190-A-11 | — | — | — |
| V | Injector 2 (cyl 2) | — | W33 | — | 0.5 | M190-A-3 | — | — | — |
| W | Injector 3 (cyl 3) | — | W34 | — | 0.5 | M190-B-U | — | — | — |
| X | Injector 4 (cyl 4) | — | W35 | — | 0.5 | M190-A-12 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W17 | — | 0.5 | OEM-3-O | — | — | — |
| 1 | — | — | W18 | — | 0.5 | OEM-4-H | — | — | — |
| 1 | — | — | W19 | — | 0.5 | M190-A-18 | — | — | — |
| 1 | — | — | W20 | — | 0.5 | M190-A-19 | — | — | — |
| 1 | — | — | W21 | — | 0.5 | M190-A-20 | — | — | — |
| 1 | — | — | W22 | — | 0.5 | M190-C-14 | — | — | — |
| 1 | — | — | W23 | — | 0.5 | M190-C-15 | — | — | — |
| 1 | — | — | W24 | — | 0.5 | M190-C-23 | — | — | — |
| 1 | — | — | W25 | — | 0.5 | M190-C-30 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-4-B | — | — | — |
| 1 | — | — | W2 | — | 0.85 | M190-B-H | — | — | — |
| 1 | — | — | W3 | — | 0.85 | M190-B-J | — | — | — |
| 1 | — | — | W4 | — | 0.85 | M190-B-K | — | — | — |
| 1 | — | — | W5 | — | 0.85 | M190-B-L | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-4-C | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-4-D | — | — | — |
| 1 | — | — | W10 | — | 0.85 | OEM-4-K | — | — | — |
| 1 | — | — | W11 | — | 0.85 | M190-B-G | — | — | — |
| 1 | — | — | W12 | — | 0.85 | M190-B-W | — | — | — |
| 1 | — | — | W13 | — | 0.85 | M190-B-X | — | — | — |
| 1 | — | — | W14 | — | 0.85 | M190-B-Y | — | — | — |
| 1 | — | — | W15 | — | 0.85 | M190-B-Z | — | — | — |
| 1 | — | — | W16 | — | 0.85 | M190-B-c | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-1-A | Cooling fan relay (low-side) | low_side_out | M190-A-2 | Low Side Injector 2 | injector_out | corroborated | |
| OEM-1-B | A/C condenser fan relay | low_side_out | M190-B-V | Low Side Injector 2 | injector_out | corroborated | |
| OEM-1-C | Starter input (12V while cranking) | digital_in | M190-A-21 | Digital Input 1 | digital_in | corroborated | |
| OEM-1-E | Check engine light (MIL) | low_side_out | M190-B-S | Low Side Injector 4 | injector_out | corroborated | |
| OEM-1-G | A/C clutch relay | low_side_out | M190-A-1 | Low Side Injector 3 | injector_out | corroborated | |
| OEM-1-K | A/C pressure switch (A/C request) | digital_in | M190-A-14 | Digital Input 2 | digital_in | corroborated | |
| OEM-1-L | Clutch switch | digital_in | M190-A-30 | Digital Input 3 | digital_in | corroborated | |
| OEM-1-M | Vehicle speed sensor (VSS) | digital_in | M190-C-27 | Universal Digital Input 4 | digital_in | corroborated | |
| OEM-1-Q | Brake switch | digital_in | M190-A-37 | Digital Input 4 | digital_in | corroborated | |
| OEM-1-U | Fuel pump relay (low-side) | low_side_out | M190-B-b | Low Side Injector 3 | injector_out | corroborated | |
| OEM-3-B | MAF sensor input | analog_in | M190-C-42 | Analogue Voltage Input 1 | analog_in | corroborated | |
| OEM-3-C | Front O2 sensor input | lambda_nb_in | M190-A-7 | Lambda Narrow Input 1 | lambda_nb_in | corroborated | |
| OEM-3-D | Rear O2 sensor input | lambda_nb_in | M190-A-6 | Lambda Narrow Input 2 | lambda_nb_in | corroborated | |
| OEM-3-F | Throttle position (TPS) | analog_in | M190-C-36 | Analogue Voltage Input 2 | analog_in | corroborated | |
| OEM-3-G | Engine coolant temp (CLT) | temp_in | M190-C-37 | Analogue Temperature Input 1 | temp_in | corroborated | |
| OEM-3-H | EGR boost sensor | analog_in | M190-C-35 | Analogue Voltage Input 3 | analog_in | corroborated | |
| OEM-3-I | +5V sensor reference | vref | M190-A-16 | Sensor 5.0V C3 | vref | corroborated | |
| OEM-3-J | EGR valve position sensor | analog_in | M190-C-29 | Analogue Voltage Input 5 | analog_in | corroborated | |
| OEM-3-K | Intake air temp (IAT) | temp_in | M190-C-39 | Analogue Temperature Input 2 | temp_in | corroborated | |
| OEM-3-L | Idle switch (closed throttle) | digital_in | M190-C-40 | Universal Digital Input 5 | digital_in | corroborated | |
| OEM-3-M | Front O2 heater control | low_side_out | M190-A-5 | Low Side Injector 4 | injector_out | corroborated | |
| OEM-3-N | EGR boost sensor (2nd channel) | analog_in | M190-C-28 | Analogue Voltage Input 4 | analog_in | corroborated | |
| OEM-3-O | Sensor ground | sensor_ground | M190-A-18 + M190-A-19 + M190-A-20 + M190-C-14 + M190-C-15 + M190-C-23 + M190-C-30 | Sensor 0V C1 + Sensor 0V C2 + Sensor 0V C3 + Sensor 0V A1 + Sensor 0V A2 + Sensor 0V B1 + Sensor 0V B2 | sensor_ground | corroborated | |
| OEM-3-P | Power steering pressure switch | digital_in | M190-C-47 | Universal Digital Input 6 | digital_in | corroborated | |
| OEM-4-A | Chassis ground | ground | M190-B-G + M190-B-W + M190-B-X + M190-B-Y + M190-B-Z + M190-B-c | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 + Battery Negative 6 | ground | corroborated | |
| OEM-4-B | ECU power +12V (main relay) | power_in | M190-B-H + M190-B-J + M190-B-K + M190-B-L | Battery Positive 1 + Battery Positive 2 + Battery Positive 3 + Battery Positive 4 | power_in | corroborated | |
| OEM-4-C | Chassis ground | ground | M190-B-G + M190-B-W + M190-B-X + M190-B-Y + M190-B-Z + M190-B-c | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 + Battery Negative 6 | ground | corroborated | |
| OEM-4-D | Chassis ground | ground | M190-B-G + M190-B-W + M190-B-X + M190-B-Y + M190-B-Z + M190-B-c | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 + Battery Negative 6 | ground | corroborated | |
| OEM-4-E | Crank position (CKP) sensor | trigger_in | M190-C-18 | Universal Digital Input 1 | digital_in | corroborated | |
| OEM-4-F | CAS SGT (cam trigger) | trigger_in | M190-C-25 | Universal Digital Input 3 | digital_in | corroborated | |
| OEM-4-G | CAS SGC (cam sync) | trigger_in | M190-C-32 | Universal Digital Input 2 | digital_in | corroborated | |
| OEM-4-H | Crank pickup timing ground (CKP gnd) | sensor_ground | M190-A-18 + M190-A-19 + M190-A-20 + M190-C-14 + M190-C-15 + M190-C-23 + M190-C-30 | Sensor 0V C1 + Sensor 0V C2 + Sensor 0V C3 + Sensor 0V A1 + Sensor 0V A2 + Sensor 0V B1 + Sensor 0V B2 | sensor_ground | corroborated | |
| OEM-4-I | Permanent +12V (battery) | power_in | M190-A-38 | Battery Backup | power_in | corroborated | |
| OEM-4-J | PRC solenoid (FPR control) | low_side_out | M190-A-48 | Low Side Injector 5 | injector_out | corroborated | |
| OEM-4-K | Chassis ground | ground | M190-B-G + M190-B-W + M190-B-X + M190-B-Y + M190-B-Z + M190-B-c | Battery Negative 1 + Battery Negative 2 + Battery Negative 3 + Battery Negative 4 + Battery Negative 5 + Battery Negative 6 | ground | corroborated | |
| OEM-4-L | Tachometer output | tacho_out | — | — | — | corroborated | |
| OEM-4-N | Ignition coil trigger (cyl 1&4) | ignition_out | M190-C-16 | Low Side Ignition 1 | ignition_out | corroborated | |
| OEM-4-O | EGR vent solenoid | low_side_out | M190-B-a | Low Side Injector 5 | injector_out | corroborated | |
| OEM-4-P | EGR vacuum solenoid | low_side_out | M190-A-40 | Low Side Injector 6 | injector_out | corroborated | |
| OEM-4-Q | Idle air control (IAC) valve | low_side_out | M190-B-T | Low Side Injector 6 | injector_out | corroborated | |
| OEM-4-R | Ignition coil trigger (cyl 2&3) | ignition_out | M190-C-8 | Low Side Ignition 2 | ignition_out | corroborated | |
| OEM-4-T | EVAP purge solenoid | low_side_out | M190-A-25 | Low Side Injector 7 | injector_out | corroborated | |
| OEM-4-U | Injector 1 (cyl 1) | injector_out | M190-A-11 | Peak Hold Injector 1 | injector_out | corroborated | |
| OEM-4-V | Injector 2 (cyl 2) | injector_out | M190-A-3 | Low Side Injector 1 | injector_out | corroborated | |
| OEM-4-W | Injector 3 (cyl 3) | injector_out | M190-B-U | Low Side Injector 1 | injector_out | corroborated | |
| OEM-4-X | Injector 4 (cyl 4) | injector_out | M190-A-12 | Peak Hold Injector 2 | injector_out | corroborated |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-4-B | SP-14V-1 | 0.85 | no route | ECU power +12V (main relay) | — | |
| W2 | SP-14V-1 | M190-B-H | 0.85 | no route | Battery Positive 1 | — | |
| W3 | SP-14V-1 | M190-B-J | 0.85 | no route | Battery Positive 2 | — | |
| W4 | SP-14V-1 | M190-B-K | 0.85 | no route | Battery Positive 3 | — | |
| W5 | SP-14V-1 | M190-B-L | 0.85 | no route | Battery Positive 4 | — | |
| W6 | OEM-4-I | M190-A-38 | 0.85 | no route | Permanent +12V (battery) | — | |
| W7 | OEM-4-A | SP-GND-1 | 0.85 | no route | Chassis ground | — | |
| W8 | OEM-4-C | SP-GND-1 | 0.85 | no route | Chassis ground | — | |
| W9 | OEM-4-D | SP-GND-1 | 0.85 | no route | Chassis ground | — | |
| W10 | OEM-4-K | SP-GND-1 | 0.85 | no route | Chassis ground | — | |
| W11 | SP-GND-1 | M190-B-G | 0.85 | no route | Battery Negative 1 | — | |
| W12 | SP-GND-1 | M190-B-W | 0.85 | no route | Battery Negative 2 | — | |
| W13 | SP-GND-1 | M190-B-X | 0.85 | no route | Battery Negative 3 | — | |
| W14 | SP-GND-1 | M190-B-Y | 0.85 | no route | Battery Negative 4 | — | |
| W15 | SP-GND-1 | M190-B-Z | 0.85 | no route | Battery Negative 5 | — | |
| W16 | SP-GND-1 | M190-B-c | 0.85 | no route | Battery Negative 6 | — | |
| W17 | OEM-3-O | SP-0V-1 | 0.5 | no route | Sensor ground | — | |
| W18 | OEM-4-H | SP-0V-1 | 0.5 | no route | Crank pickup timing ground (CKP gnd) | — | |
| W19 | SP-0V-1 | M190-A-18 | 0.5 | no route | Sensor 0V C1 | — | |
| W20 | SP-0V-1 | M190-A-19 | 0.5 | no route | Sensor 0V C2 | — | |
| W21 | SP-0V-1 | M190-A-20 | 0.5 | no route | Sensor 0V C3 | — | |
| W22 | SP-0V-1 | M190-C-14 | 0.5 | no route | Sensor 0V A1 | — | |
| W23 | SP-0V-1 | M190-C-15 | 0.5 | no route | Sensor 0V A2 | — | |
| W24 | SP-0V-1 | M190-C-23 | 0.5 | no route | Sensor 0V B1 | — | |
| W25 | SP-0V-1 | M190-C-30 | 0.5 | no route | Sensor 0V B2 | — | |
| W26 | OEM-3-I | M190-A-16 | 0.5 | no route | +5V sensor reference | — | |
| W27 | OEM-4-E | M190-C-18 | 0.5 | no route | Crank position (CKP) sensor | — | |
| W28 | OEM-4-G | M190-C-32 | 0.5 | no route | CAS SGC (cam sync) | — | |
| W29 | OEM-4-F | M190-C-25 | 0.5 | no route | CAS SGT (cam trigger) | — | |
| W30 | OEM-4-N | M190-C-16 | 0.5 | no route | Ignition coil trigger (cyl 1&4) | — | |
| W31 | OEM-4-R | M190-C-8 | 0.5 | no route | Ignition coil trigger (cyl 2&3) | — | |
| W32 | OEM-4-U | M190-A-11 | 0.5 | no route | Injector 1 (cyl 1) | — | |
| W33 | OEM-4-V | M190-A-3 | 0.5 | no route | Injector 2 (cyl 2) | — | |
| W34 | OEM-4-W | M190-B-U | 0.5 | no route | Injector 3 (cyl 3) | — | |
| W35 | OEM-4-X | M190-A-12 | 0.5 | no route | Injector 4 (cyl 4) | — | |
| W36 | OEM-3-B | M190-C-42 | 0.5 | no route | MAF sensor input | — | |
| W37 | OEM-3-F | M190-C-36 | 0.5 | no route | Throttle position (TPS) | — | |
| W38 | OEM-3-G | M190-C-37 | 0.5 | no route | Engine coolant temp (CLT) | — | |
| W39 | OEM-1-A | M190-A-2 | 0.5 | no route | Cooling fan relay (low-side) | — | |
| W40 | OEM-1-B | M190-B-V | 0.5 | no route | A/C condenser fan relay | — | |
| W41 | OEM-1-G | M190-A-1 | 0.5 | no route | A/C clutch relay | — | |
| W42 | OEM-1-U | M190-B-b | 0.5 | no route | Fuel pump relay (low-side) | — | |
| W43 | OEM-3-M | M190-A-5 | 0.5 | no route | Front O2 heater control | — | |
| W44 | OEM-1-E | M190-B-S | 0.5 | no route | Check engine light (MIL) | — | |
| W45 | OEM-4-J | M190-A-48 | 0.5 | no route | PRC solenoid (FPR control) | — | |
| W46 | OEM-4-O | M190-B-a | 0.5 | no route | EGR vent solenoid | — | |
| W47 | OEM-4-P | M190-A-40 | 0.5 | no route | EGR vacuum solenoid | — | |
| W48 | OEM-4-Q | M190-B-T | 0.5 | no route | Idle air control (IAC) valve | — | |
| W49 | OEM-4-T | M190-A-25 | 0.5 | no route | EVAP purge solenoid | — | |
| W50 | OEM-3-H | M190-C-35 | 0.5 | no route | EGR boost sensor | — | |
| W51 | OEM-3-N | M190-C-28 | 0.5 | no route | EGR boost sensor (2nd channel) | — | |
| W52 | OEM-3-C | M190-A-7 | 0.5 | no route | Front O2 sensor input | — | |
| W53 | OEM-3-D | M190-A-6 | 0.5 | no route | Rear O2 sensor input | — | |
| W54 | OEM-3-K | M190-C-39 | 0.5 | no route | Intake air temp (IAT) | — | |
| W55 | OEM-3-J | M190-C-29 | 0.5 | no route | EGR valve position sensor | — | |
| W56 | OEM-1-M | M190-C-27 | 0.5 | no route | Vehicle speed sensor (VSS) | — | |
| W57 | OEM-1-C | M190-A-21 | 0.5 | no route | Starter input (12V while cranking) | — | |
| W58 | OEM-1-K | M190-A-14 | 0.5 | no route | A/C pressure switch (A/C request) | — | |
| W59 | OEM-1-L | M190-A-30 | 0.5 | no route | Clutch switch | — | |
| W60 | OEM-1-Q | M190-A-37 | 0.5 | no route | Brake switch | — | |
| W61 | OEM-3-L | M190-C-40 | 0.5 | no route | Idle switch (closed throttle) | — | |
| W62 | OEM-3-P | M190-C-47 | 0.5 | no route | Power steering pressure switch | — |
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 (15)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-4-E ↔ M190-C-18 | OEM-4-E "Crank position (CKP) sensor" [trigger_in] is wired to M190-C-18 "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-4-F ↔ M190-C-25 | OEM-4-F "CAS SGT (cam trigger)" [trigger_in] is wired to M190-C-25 "Universal Digital Input 3" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot. |
| warn | NET_FAMILY | OEM-4-G ↔ M190-C-32 | OEM-4-G "CAS SGC (cam sync)" [trigger_in] is wired to M190-C-32 "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-1-A ↔ M190-A-2 | OEM-1-A "Cooling fan relay (low-side)" [low_side_out] is wired to M190-A-2 "Low Side Injector 2" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-B ↔ M190-B-V | OEM-1-B "A/C condenser fan relay" [low_side_out] is wired to M190-B-V "Low Side Injector 2" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-E ↔ M190-B-S | OEM-1-E "Check engine light (MIL)" [low_side_out] is wired to M190-B-S "Low Side Injector 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-G ↔ M190-A-1 | OEM-1-G "A/C clutch relay" [low_side_out] is wired to M190-A-1 "Low Side Injector 3" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-1-U ↔ M190-B-b | OEM-1-U "Fuel pump relay (low-side)" [low_side_out] is wired to M190-B-b "Low Side Injector 3" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-3-M ↔ M190-A-5 | OEM-3-M "Front O2 heater control" [low_side_out] is wired to M190-A-5 "Low Side Injector 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-J ↔ M190-A-48 | OEM-4-J "PRC solenoid (FPR control)" [low_side_out] is wired to M190-A-48 "Low Side Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-O ↔ M190-B-a | OEM-4-O "EGR vent solenoid" [low_side_out] is wired to M190-B-a "Low Side Injector 5" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-P ↔ M190-A-40 | OEM-4-P "EGR vacuum solenoid" [low_side_out] is wired to M190-A-40 "Low Side Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-Q ↔ M190-B-T | OEM-4-Q "Idle air control (IAC) valve" [low_side_out] is wired to M190-B-T "Low Side Injector 6" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-4-T ↔ M190-A-25 | OEM-4-T "EVAP purge solenoid" [low_side_out] is wired to M190-A-25 "Low Side Injector 7" [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-4-L Tachometer output |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Fit check: unconfirmed. Confirm these before building: - Trigger pattern for Mazda BP-ZE not found in the ECU's docs (No native BP-ZE (NA8) mode; MoTeC support (N. Butler) is "fairly certain" the 4G63T mode works — not confirmed.) Auto-mapped by auto_map() from the library pin data on 2026-10-11. Review every wire against both manuals before building. Not wired: - OEM-4 L: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MoTeC M190
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | AEM EMS 30-1720 Plug-and-Play adapter manual (1996-97 Miata) | https://static.summitracing.com/global/images/instructions/avm-30-1720.pdf | — | — | — |
| 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 | Mellens.net: 1996 Mazda Miata wiring diagrams (FSM-derived) | http://www.mellens.net/mazda/mazda_miata_extra_manual/1996_wiring.pdf | — | — | — |