MX-5 Miata NB2 2001-05 (BP-Z3, VVT) → MoTeC M170 13170 (auto)
MX-5 Miata NB2 2001-05 (BP-Z3, VVT) — MoTeC — M170
Drawn by Michael Gnankou · Rev 0 · proposal · 2026-10-08
Before you start
| Status | proposal · not yet verified: nobody has reported building and running this harness |
|---|---|
| Open errors | none |
| Size of the job | 54 wires · 7 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-2-P | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W3 | SP-14V-1 | M170-A-23 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W4 | SP-14V-1 | M170-A-32 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W5 | SP-14V-1 | M170-A-41 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W6 | OEM-4-AG | M170-A-54 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W7 | OEM-3-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W8 | OEM-3-B | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W9 | OEM-4-A | SP-GND-1 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W10 | SP-GND-1 | M170-A-14 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W11 | SP-GND-1 | M170-A-15 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W12 | SP-GND-1 | M170-A-19 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W13 | SP-GND-1 | M170-A-20 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W14 | SP-GND-1 | M170-A-21 | 0.85 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W15 | OEM-4-O | SP-0V-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W16 | SP-0V-1 | M170-A-11 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W17 | SP-0V-1 | M170-A-27 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W18 | OEM-4-L | M170-A-16 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W19 | OEM-3-Y | M170-A-49 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W20 | OEM-3-V | M170-A-56 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W21 | OEM-4-M | M170-A-29 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W22 | OEM-3-F | M170-A-1 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W23 | OEM-3-I | M170-A-5 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W24 | OEM-2-A | M170-A-33 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W25 | OEM-2-D | M170-A-43 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W26 | OEM-2-G | M170-A-50 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W27 | OEM-2-J | M170-A-51 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W28 | OEM-2-B | M170-A-63 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W29 | OEM-2-C | M170-A-66 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W30 | OEM-2-K | M170-A-24 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W31 | OEM-2-M | M170-A-42 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W32 | OEM-3-H | M170-A-57 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W33 | OEM-3-J | M170-A-9 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W34 | OEM-3-P | M170-A-8 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W35 | OEM-2-Q | M170-A-62 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W36 | OEM-2-E | M170-A-59 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W37 | OEM-2-F | M170-A-65 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W38 | OEM-2-H | M170-A-58 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W39 | OEM-2-I | M170-A-64 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W40 | OEM-4-X | M170-A-26 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W41 | OEM-4-V | M170-A-18 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W42 | OEM-4-AA | M170-A-6 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W43 | OEM-4-W | M170-A-7 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W44 | OEM-4-P | M170-A-28 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W45 | OEM-4-N | M170-A-38 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W46 | OEM-4-AD | M170-A-12 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W47 | OEM-3-T | M170-A-46 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W48 | OEM-3-S | M170-A-45 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W49 | OEM-4-B | M170-A-52 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W50 | OEM-4-C | M170-A-53 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W51 | OEM-4-F | M170-A-13 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W52 | OEM-4-H | M170-A-22 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W53 | OEM-4-I | M170-A-36 | 0.5 | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | ☐ | |
| W54 | OEM-4-J | M170-A-35 | 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-16 | M170-A-11 | open (OL) | 5 V sensor reference must not touch sensor ground | |
| 2 | M170-A-23 | M170-A-11 | open (OL) | +12 V supply must not touch sensor ground | |
| 3 | M170-A-23 | M170-A-14 | open (OL) | +12 V supply must not touch power ground | |
| 4 | M170-A-54 | M170-A-11 | open (OL) | +12 V supply must not touch sensor ground | |
| 5 | M170-A-14 | M170-A-16 | open (OL) | power ground must not touch 5 V sensor reference | |
| 6 | M170-A-14 | M170-A-54 | open (OL) | power ground must not touch +12 V supply | |
| 7 | M170-A-23 | M170-A-16 | open (OL) | +12 V supply must not touch 5 V sensor reference | |
| 8 | M170-A-54 | M170-A-16 | open (OL) | +12 V supply must not touch 5 V sensor reference |
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 | — | W22 | — | 0.5 | OEM-3-F | — | — | — |
| 10 | Low Side Ignition 4 | — | — | — | — | — | — | — | — |
| 11 | Sensor 0V A | — | W16 | — | 0.5 | SP-0V-1 | — | — | — |
| 12 | Analogue Voltage Input 5 | — | W46 | — | 0.5 | OEM-4-AD | — | — | — |
| 13 | Universal Digital Input 7 | — | W51 | — | 0.5 | OEM-4-F | — | — | — |
| 14 | Battery Negative 1 | — | W10 | — | 0.85 | SP-GND-1 | — | — | — |
| 15 | Battery Negative 2 | — | W11 | — | 0.85 | SP-GND-1 | — | — | — |
| 16 | Sensor 5.0V A | — | W18 | — | 0.5 | OEM-4-L | — | — | — |
| 17 | Low Side Ignition 5 | — | — | — | — | — | — | — | — |
| 18 | Analogue Voltage Input 2 | — | W41 | — | 0.5 | OEM-4-V | — | — | — |
| 19 | Battery Negative 3 | — | W12 | — | 0.85 | SP-GND-1 | — | — | — |
| 2 | Low Side Ignition 8 | — | — | — | — | — | — | — | — |
| 20 | Battery Negative 4 | — | W13 | — | 0.85 | SP-GND-1 | — | — | — |
| 21 | Battery Negative 5 | — | W14 | — | 0.85 | SP-GND-1 | — | — | — |
| 22 | Universal Digital Input 8 | — | W52 | — | 0.5 | OEM-4-H | — | — | — |
| 23 | Battery Positive | — | W3 | — | 0.85 | SP-14V-1 | — | — | — |
| 24 | Peak Hold Injector 5 | — | W30 | — | 0.5 | OEM-2-K | — | — | — |
| 25 | Low Side Ignition 6 | — | — | — | — | — | — | — | — |
| 26 | Analogue Voltage Input 1 | — | W40 | — | 0.5 | OEM-4-X | — | — | — |
| 27 | Sensor 0V B | — | W17 | — | 0.5 | SP-0V-1 | — | — | — |
| 28 | Analogue Temperature Input 1 | — | W44 | — | 0.5 | OEM-4-P | — | — | — |
| 29 | Knock Input 1 | — | W21 | — | 0.5 | OEM-4-M | — | — | — |
| 3 | Low Side Ignition 7 | — | — | — | — | — | — | — | — |
| 30 | Analogue Temperature Input 3 | — | — | — | — | — | — | — | — |
| 31 | CAN Bus 1 Low | — | — | — | — | — | — | — | — |
| 32 | Battery Positive | — | W4 | — | 0.85 | SP-14V-1 | — | — | — |
| 33 | Peak Hold Injector 1 | — | W24 | — | 0.5 | OEM-2-A | — | — | — |
| 34 | Sensor 5.0V B | — | — | — | — | — | — | — | — |
| 35 | Analogue Voltage Input 7 | — | W54 | — | 0.5 | OEM-4-J | — | — | — |
| 36 | Analogue Voltage Input 6 | — | W53 | — | 0.5 | OEM-4-I | — | — | — |
| 37 | Sensor 6.3V | — | — | — | — | — | — | — | — |
| 38 | Analogue Temperature Input 2 | — | W45 | — | 0.5 | OEM-4-N | — | — | — |
| 39 | Analogue Temperature Input 4 | — | — | — | — | — | — | — | — |
| 4 | Low Side Ignition 3 | — | — | — | — | — | — | — | — |
| 40 | CAN Bus 1 High | — | — | — | — | — | — | — | — |
| 41 | Battery Positive | — | W5 | — | 0.85 | SP-14V-1 | — | — | — |
| 42 | Peak Hold Injector 6 | — | W31 | — | 0.5 | OEM-2-M | — | — | — |
| 43 | Low Side Injector 1 | — | W25 | — | 0.5 | OEM-2-D | — | — | — |
| 44 | Analogue Voltage Input 8 | — | — | — | — | — | — | — | — |
| 45 | Universal Digital Input 4 | — | W48 | — | 0.5 | OEM-3-S | — | — | — |
| 46 | Universal Digital Input 3 | — | W47 | — | 0.5 | OEM-3-T | — | — | — |
| 47 | Ethernet Transmit - | — | — | — | — | — | — | — | — |
| 48 | Ethernet Transmit + | — | — | — | — | — | — | — | — |
| 49 | Universal Digital Input 1 | — | W19 | — | 0.5 | OEM-3-Y | — | — | — |
| 5 | Low Side Ignition 2 | — | W23 | — | 0.5 | OEM-3-I | — | — | — |
| 50 | Peak Hold Injector 2 | — | W26 | — | 0.5 | OEM-2-G | — | — | — |
| 51 | Low Side Injector 2 | — | W27 | — | 0.5 | OEM-2-J | — | — | — |
| 52 | Universal Digital Input 5 | — | W49 | — | 0.5 | OEM-4-B | — | — | — |
| 53 | Universal Digital Input 6 | — | W50 | — | 0.5 | OEM-4-C | — | — | — |
| 54 | Battery Backup | — | W6 | — | 0.85 | OEM-4-AG | — | — | — |
| 55 | Ethernet Receive + | — | — | — | — | — | — | — | — |
| 56 | Universal Digital Input 2 | — | W20 | — | 0.5 | OEM-3-V | — | — | — |
| 57 | Peak Hold Injector 7 | — | W32 | — | 0.5 | OEM-3-H | — | — | — |
| 58 | Half Bridge Output 5 | — | W38 | — | 0.5 | OEM-2-H | — | — | — |
| 59 | Half Bridge Output 3 | — | W36 | — | 0.5 | OEM-2-E | — | — | — |
| 6 | Analogue Voltage Input 3 | — | W42 | — | 0.5 | OEM-4-AA | — | — | — |
| 60 | Knock Input 2 | — | — | — | — | — | — | — | — |
| 61 | Ethernet Receive - | — | — | — | — | — | — | — | — |
| 62 | Peak Hold Injector 8 | — | W35 | — | 0.5 | OEM-2-Q | — | — | — |
| 63 | Peak Hold Injector 3 | — | W28 | — | 0.5 | OEM-2-B | — | — | — |
| 64 | Half Bridge Output 6 | — | W39 | — | 0.5 | OEM-2-I | — | — | — |
| 65 | Half Bridge Output 4 | — | W37 | — | 0.5 | OEM-2-F | — | — | — |
| 66 | Peak Hold Injector 4 | — | W29 | — | 0.5 | OEM-2-C | — | — | — |
| 7 | Analogue Voltage Input 4 | — | W43 | — | 0.5 | OEM-4-W | — | — | — |
| 8 | Half Bridge Output 2 | — | W34 | — | 0.5 | OEM-3-P | — | — | — |
| 9 | Half Bridge Output 1 | — | W33 | — | 0.5 | OEM-3-J | — | — | — |
OEM-2
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Injector 1 | — | W24 | — | 0.5 | M170-A-33 | — | — | — |
| B | Cooling fan relay | — | W28 | — | 0.5 | M170-A-63 | — | — | — |
| C | Condenser fan relay | — | W29 | — | 0.5 | M170-A-66 | — | — | — |
| D | Injector 2 | — | W25 | — | 0.5 | M170-A-43 | — | — | — |
| E | EGR valve | — | W36 | — | 0.5 | M170-A-59 | — | — | — |
| F | EGR valve | — | W37 | — | 0.5 | M170-A-65 | — | — | — |
| G | Injector 3 | — | W26 | — | 0.5 | M170-A-50 | — | — | — |
| H | EGR valve | — | W38 | — | 0.5 | M170-A-58 | — | — | — |
| I | EGR valve | — | W39 | — | 0.5 | M170-A-64 | — | — | — |
| J | Injector 4 | — | W27 | — | 0.5 | M170-A-51 | — | — | — |
| K | A/C clutch relay | — | W30 | — | 0.5 | M170-A-24 | — | — | — |
| M | Fuel pump relay | — | W31 | — | 0.5 | M170-A-42 | — | — | — |
| N | VTCS solenoid (intake butterflies) | — | — | — | — | — | — | — | — |
| P | ISC valve +14V feed | — | W1 | — | 0.85 | SP-14V-1 | — | — | — |
| Q | ISC valve low side | — | W35 | — | 0.5 | M170-A-62 | — | — | — |
| R | Malfunction indicator lamp (MIL) | — | — | — | — | — | — | — | — |
OEM-3
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W7 | — | 0.85 | SP-GND-1 | — | — | — |
| B | Power ground | — | W8 | — | 0.85 | SP-GND-1 | — | — | — |
| D | EGR boost solenoid | — | — | — | — | — | — | — | — |
| E | Charcoal canister purge | — | — | — | — | — | — | — | — |
| F | Ignition 1 (coils 1+4, wasted spark) | — | W22 | — | 0.5 | M170-A-1 | — | — | — |
| H | Main relay | — | W32 | — | 0.5 | M170-A-57 | — | — | — |
| I | Ignition 2 (coils 2+3, wasted spark) | — | W23 | — | 0.5 | M170-A-5 | — | — | — |
| J | Front O2 heater | — | W33 | — | 0.5 | M170-A-9 | — | — | — |
| M | Alternator control | — | — | — | — | — | — | — | — |
| O | Tachometer output | — | — | — | — | — | — | — | — |
| P | Rear O2 heater | — | W34 | — | 0.5 | M170-A-8 | — | — | — |
| S | Immobiliser | — | W48 | — | 0.5 | M170-A-45 | — | — | — |
| T | Vehicle speed | — | W47 | — | 0.5 | M170-A-46 | — | — | — |
| U | Charge lamp | — | — | — | — | — | — | — | — |
| V | Cam position (CMP) | — | W20 | — | 0.5 | M170-A-56 | — | — | — |
| Y | Crank position (CKP) | — | W19 | — | 0.5 | M170-A-49 | — | — | — |
OEM-4
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| A | Power ground | — | W9 | — | 0.85 | SP-GND-1 | — | — | — |
| AA | Rear O2 signal | — | W42 | — | 0.5 | M170-A-6 | — | — | — |
| AD | Fuel level | — | W46 | — | 0.5 | M170-A-12 | — | — | — |
| AF | ECU power +14V (main relay) | — | W2 | — | 0.85 | SP-14V-1 | — | — | — |
| AG | Constant +12V | — | W6 | — | 0.85 | M170-A-54 | — | — | — |
| B | Brake switch | — | W49 | — | 0.5 | M170-A-52 | — | — | — |
| C | Power steering pressure switch | — | W50 | — | 0.5 | M170-A-53 | — | — | — |
| D | VVT oil-control solenoid | — | — | — | — | — | — | — | — |
| F | A/C request | — | W51 | — | 0.5 | M170-A-13 | — | — | — |
| H | Neutral switch | — | W52 | — | 0.5 | M170-A-22 | — | — | — |
| I | Clutch switch | — | W53 | — | 0.5 | M170-A-36 | — | — | — |
| J | VTCS vacuum switch | — | W54 | — | 0.5 | M170-A-35 | — | — | — |
| L | +5V sensor supply | — | W18 | — | 0.5 | M170-A-16 | — | — | — |
| M | Knock sensor | — | W21 | — | 0.5 | M170-A-29 | — | — | — |
| N | Intake air temperature (IAT) | — | W45 | — | 0.5 | M170-A-38 | — | — | — |
| O | Signal ground | — | W15 | — | 0.5 | SP-0V-1 | — | — | — |
| P | Coolant temperature (ECT) | — | W44 | — | 0.5 | M170-A-28 | — | — | — |
| V | Throttle position (TPS) | — | W41 | — | 0.5 | M170-A-18 | — | — | — |
| W | Front O2 signal | — | W43 | — | 0.5 | M170-A-7 | — | — | — |
| X | Mass air flow (MAF) | — | W40 | — | 0.5 | M170-A-26 | — | — | — |
SP-0V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W15 | — | 0.5 | OEM-4-O | — | — | — |
| 1 | — | — | W16 | — | 0.5 | M170-A-11 | — | — | — |
| 1 | — | — | W17 | — | 0.5 | M170-A-27 | — | — | — |
SP-14V
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W1 | — | 0.85 | OEM-2-P | — | — | — |
| 1 | — | — | W2 | — | 0.85 | OEM-4-AF | — | — | — |
| 1 | — | — | W3 | — | 0.85 | M170-A-23 | — | — | — |
| 1 | — | — | W4 | — | 0.85 | M170-A-32 | — | — | — |
| 1 | — | — | W5 | — | 0.85 | M170-A-41 | — | — | — |
SP-GND
| Cavity | Function | Signal | Wire | Colour | Gauge (mm²) | Destination | Terminal | Seal | Plug |
|---|---|---|---|---|---|---|---|---|---|
| 1 | — | — | W7 | — | 0.85 | OEM-3-A | — | — | — |
| 1 | — | — | W8 | — | 0.85 | OEM-3-B | — | — | — |
| 1 | — | — | W9 | — | 0.85 | OEM-4-A | — | — | — |
| 1 | — | — | W10 | — | 0.85 | M170-A-14 | — | — | — |
| 1 | — | — | W11 | — | 0.85 | M170-A-15 | — | — | — |
| 1 | — | — | W12 | — | 0.85 | M170-A-19 | — | — | — |
| 1 | — | — | W13 | — | 0.85 | M170-A-20 | — | — | — |
| 1 | — | — | W14 | — | 0.85 | M170-A-21 | — | — | — |
Pin map
| OEM point | OEM function | OEM family | Target point | Target function | Target family | Wire colour | Evidence |
|---|---|---|---|---|---|---|---|
| OEM-2-A | Injector 1 | injector_out | M170-A-33 | Peak Hold Injector 1 | injector_out | single_source | |
| OEM-2-B | Cooling fan relay | low_side_out | M170-A-63 | Peak Hold Injector 3 | injector_out | single_source | |
| OEM-2-C | Condenser fan relay | low_side_out | M170-A-66 | Peak Hold Injector 4 | injector_out | single_source | |
| OEM-2-D | Injector 2 | injector_out | M170-A-43 | Low Side Injector 1 | injector_out | single_source | |
| OEM-2-E | EGR valve | low_side_out | M170-A-59 | Half Bridge Output 3 | hbridge_out | single_source | |
| OEM-2-F | EGR valve | low_side_out | M170-A-65 | Half Bridge Output 4 | hbridge_out | single_source | |
| OEM-2-G | Injector 3 | injector_out | M170-A-50 | Peak Hold Injector 2 | injector_out | single_source | |
| OEM-2-H | EGR valve | low_side_out | M170-A-58 | Half Bridge Output 5 | hbridge_out | single_source | |
| OEM-2-I | EGR valve | low_side_out | M170-A-64 | Half Bridge Output 6 | hbridge_out | single_source | |
| OEM-2-J | Injector 4 | injector_out | M170-A-51 | Low Side Injector 2 | injector_out | single_source | |
| OEM-2-K | A/C clutch relay | low_side_out | M170-A-24 | Peak Hold Injector 5 | injector_out | single_source | |
| OEM-2-M | Fuel pump relay | low_side_out | M170-A-42 | Peak Hold Injector 6 | injector_out | single_source | |
| OEM-2-N | VTCS solenoid (intake butterflies) | low_side_out | — | — | — | single_source | |
| OEM-2-P | ISC valve +14V feed | power_in | M170-A-23 + M170-A-32 + M170-A-41 | Battery Positive + Battery Positive + Battery Positive | power_in | single_source | |
| OEM-2-Q | ISC valve low side | low_side_out | M170-A-62 | Peak Hold Injector 8 | injector_out | single_source | |
| OEM-2-R | Malfunction indicator lamp (MIL) | low_side_out | — | — | — | single_source | |
| OEM-3-A | Power ground | 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-3-B | Power ground | 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-3-D | EGR boost solenoid | low_side_out | — | — | — | single_source | |
| OEM-3-E | Charcoal canister purge | low_side_out | — | — | — | single_source | |
| OEM-3-F | Ignition 1 (coils 1+4, wasted spark) | ignition_out | M170-A-1 | Low Side Ignition 1 | ignition_out | single_source | |
| OEM-3-H | Main relay | low_side_out | M170-A-57 | Peak Hold Injector 7 | injector_out | single_source | |
| OEM-3-I | Ignition 2 (coils 2+3, wasted spark) | ignition_out | M170-A-5 | Low Side Ignition 2 | ignition_out | single_source | |
| OEM-3-J | Front O2 heater | low_side_out | M170-A-9 | Half Bridge Output 1 | hbridge_out | single_source | |
| OEM-3-M | Alternator control | low_side_out | — | — | — | single_source | |
| OEM-3-O | Tachometer output | tacho_out | — | — | — | single_source | |
| OEM-3-P | Rear O2 heater | low_side_out | M170-A-8 | Half Bridge Output 2 | hbridge_out | single_source | |
| OEM-3-S | Immobiliser | digital_in | M170-A-45 | Universal Digital Input 4 | digital_in | single_source | |
| OEM-3-T | Vehicle speed | digital_in | M170-A-46 | Universal Digital Input 3 | digital_in | single_source | |
| OEM-3-U | Charge lamp | low_side_out | — | — | — | single_source | |
| OEM-3-V | Cam position (CMP) | trigger_in | M170-A-56 | Universal Digital Input 2 | digital_in | single_source | |
| OEM-3-Y | Crank position (CKP) | trigger_in | M170-A-49 | Universal Digital Input 1 | digital_in | single_source | |
| OEM-4-A | Power ground | 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-4-AA | Rear O2 signal | lambda_nb_in | M170-A-6 | Analogue Voltage Input 3 | analog_in | single_source | |
| OEM-4-AD | Fuel level | analog_in | M170-A-12 | Analogue Voltage Input 5 | analog_in | single_source | |
| OEM-4-AF | ECU power +14V (main relay) | power_in | M170-A-23 + M170-A-32 + M170-A-41 | Battery Positive + Battery Positive + Battery Positive | power_in | single_source | |
| OEM-4-AG | Constant +12V | power_in | M170-A-54 | Battery Backup | power_in | single_source | |
| OEM-4-B | Brake switch | digital_in | M170-A-52 | Universal Digital Input 5 | digital_in | single_source | |
| OEM-4-C | Power steering pressure switch | digital_in | M170-A-53 | Universal Digital Input 6 | digital_in | single_source | |
| OEM-4-D | VVT oil-control solenoid | low_side_out | — | — | — | single_source | |
| OEM-4-F | A/C request | digital_in | M170-A-13 | Universal Digital Input 7 | digital_in | single_source | |
| OEM-4-H | Neutral switch | digital_in | M170-A-22 | Universal Digital Input 8 | digital_in | single_source | |
| OEM-4-I | Clutch switch | digital_in | M170-A-36 | Analogue Voltage Input 6 | analog_in | single_source | |
| OEM-4-J | VTCS vacuum switch | digital_in | M170-A-35 | Analogue Voltage Input 7 | analog_in | single_source | |
| OEM-4-L | +5V sensor supply | vref | M170-A-16 | Sensor 5.0V A | vref | single_source | |
| OEM-4-M | Knock sensor | knock_in | M170-A-29 | Knock Input 1 | knock_in | single_source | |
| OEM-4-N | Intake air temperature (IAT) | temp_in | M170-A-38 | Analogue Temperature Input 2 | temp_in | single_source | |
| OEM-4-O | Signal ground | sensor_ground | M170-A-11 + M170-A-27 | Sensor 0V A + Sensor 0V B | sensor_ground | single_source | |
| OEM-4-P | Coolant temperature (ECT) | temp_in | M170-A-28 | Analogue Temperature Input 1 | temp_in | single_source | |
| OEM-4-V | Throttle position (TPS) | analog_in | M170-A-18 | Analogue Voltage Input 2 | analog_in | single_source | |
| OEM-4-W | Front O2 signal | lambda_nb_in | M170-A-7 | Analogue Voltage Input 4 | analog_in | single_source | |
| OEM-4-X | Mass air flow (MAF) | analog_in | M170-A-26 | Analogue Voltage Input 1 | analog_in | single_source |
Cut list
| Wire | From | To | Gauge (mm²) | Colour | Length | Signal | Ident |
|---|---|---|---|---|---|---|---|
| W1 | OEM-2-P | SP-14V-1 | 0.85 | no route | ISC valve +14V feed | — | |
| W2 | OEM-4-AF | SP-14V-1 | 0.85 | no route | ECU power +14V (main relay) | — | |
| W3 | SP-14V-1 | M170-A-23 | 0.85 | no route | Battery Positive | — | |
| W4 | SP-14V-1 | M170-A-32 | 0.85 | no route | Battery Positive | — | |
| W5 | SP-14V-1 | M170-A-41 | 0.85 | no route | Battery Positive | — | |
| W6 | OEM-4-AG | M170-A-54 | 0.85 | no route | Constant +12V | — | |
| W7 | OEM-3-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W8 | OEM-3-B | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W9 | OEM-4-A | SP-GND-1 | 0.85 | no route | Power ground | — | |
| W10 | SP-GND-1 | M170-A-14 | 0.85 | no route | Battery Negative 1 | — | |
| W11 | SP-GND-1 | M170-A-15 | 0.85 | no route | Battery Negative 2 | — | |
| W12 | SP-GND-1 | M170-A-19 | 0.85 | no route | Battery Negative 3 | — | |
| W13 | SP-GND-1 | M170-A-20 | 0.85 | no route | Battery Negative 4 | — | |
| W14 | SP-GND-1 | M170-A-21 | 0.85 | no route | Battery Negative 5 | — | |
| W15 | OEM-4-O | SP-0V-1 | 0.5 | no route | Signal ground | — | |
| W16 | SP-0V-1 | M170-A-11 | 0.5 | no route | Sensor 0V A | — | |
| W17 | SP-0V-1 | M170-A-27 | 0.5 | no route | Sensor 0V B | — | |
| W18 | OEM-4-L | M170-A-16 | 0.5 | no route | +5V sensor supply | — | |
| W19 | OEM-3-Y | M170-A-49 | 0.5 | no route | Crank position (CKP) | — | |
| W20 | OEM-3-V | M170-A-56 | 0.5 | no route | Cam position (CMP) | — | |
| W21 | OEM-4-M | M170-A-29 | 0.5 | no route | Knock sensor | — | |
| W22 | OEM-3-F | M170-A-1 | 0.5 | no route | Ignition 1 (coils 1+4, wasted spark) | — | |
| W23 | OEM-3-I | M170-A-5 | 0.5 | no route | Ignition 2 (coils 2+3, wasted spark) | — | |
| W24 | OEM-2-A | M170-A-33 | 0.5 | no route | Injector 1 | — | |
| W25 | OEM-2-D | M170-A-43 | 0.5 | no route | Injector 2 | — | |
| W26 | OEM-2-G | M170-A-50 | 0.5 | no route | Injector 3 | — | |
| W27 | OEM-2-J | M170-A-51 | 0.5 | no route | Injector 4 | — | |
| W28 | OEM-2-B | M170-A-63 | 0.5 | no route | Cooling fan relay | — | |
| W29 | OEM-2-C | M170-A-66 | 0.5 | no route | Condenser fan relay | — | |
| W30 | OEM-2-K | M170-A-24 | 0.5 | no route | A/C clutch relay | — | |
| W31 | OEM-2-M | M170-A-42 | 0.5 | no route | Fuel pump relay | — | |
| W32 | OEM-3-H | M170-A-57 | 0.5 | no route | Main relay | — | |
| W33 | OEM-3-J | M170-A-9 | 0.5 | no route | Front O2 heater | — | |
| W34 | OEM-3-P | M170-A-8 | 0.5 | no route | Rear O2 heater | — | |
| W35 | OEM-2-Q | M170-A-62 | 0.5 | no route | ISC valve low side | — | |
| W36 | OEM-2-E | M170-A-59 | 0.5 | no route | EGR valve | — | |
| W37 | OEM-2-F | M170-A-65 | 0.5 | no route | EGR valve | — | |
| W38 | OEM-2-H | M170-A-58 | 0.5 | no route | EGR valve | — | |
| W39 | OEM-2-I | M170-A-64 | 0.5 | no route | EGR valve | — | |
| W40 | OEM-4-X | M170-A-26 | 0.5 | no route | Mass air flow (MAF) | — | |
| W41 | OEM-4-V | M170-A-18 | 0.5 | no route | Throttle position (TPS) | — | |
| W42 | OEM-4-AA | M170-A-6 | 0.5 | no route | Rear O2 signal | — | |
| W43 | OEM-4-W | M170-A-7 | 0.5 | no route | Front O2 signal | — | |
| W44 | OEM-4-P | M170-A-28 | 0.5 | no route | Coolant temperature (ECT) | — | |
| W45 | OEM-4-N | M170-A-38 | 0.5 | no route | Intake air temperature (IAT) | — | |
| W46 | OEM-4-AD | M170-A-12 | 0.5 | no route | Fuel level | — | |
| W47 | OEM-3-T | M170-A-46 | 0.5 | no route | Vehicle speed | — | |
| W48 | OEM-3-S | M170-A-45 | 0.5 | no route | Immobiliser | — | |
| W49 | OEM-4-B | M170-A-52 | 0.5 | no route | Brake switch | — | |
| W50 | OEM-4-C | M170-A-53 | 0.5 | no route | Power steering pressure switch | — | |
| W51 | OEM-4-F | M170-A-13 | 0.5 | no route | A/C request | — | |
| W52 | OEM-4-H | M170-A-22 | 0.5 | no route | Neutral switch | — | |
| W53 | OEM-4-I | M170-A-36 | 0.5 | no route | Clutch switch | — | |
| W54 | OEM-4-J | M170-A-35 | 0.5 | no route | VTCS vacuum 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 (17)
| Severity | Code | Subject | Message |
|---|---|---|---|
| warn | NET_FAMILY | OEM-2-E ↔ M170-A-59 | OEM-2-E "EGR valve" [low_side_out] is wired to M170-A-59 "Half Bridge Output 3" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-F ↔ M170-A-65 | OEM-2-F "EGR valve" [low_side_out] is wired to M170-A-65 "Half Bridge Output 4" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-H ↔ M170-A-58 | OEM-2-H "EGR valve" [low_side_out] is wired to M170-A-58 "Half Bridge Output 5" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-2-I ↔ M170-A-64 | OEM-2-I "EGR valve" [low_side_out] is wired to M170-A-64 "Half Bridge Output 6" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-J ↔ M170-A-9 | OEM-3-J "Front O2 heater" [low_side_out] is wired to M170-A-9 "Half Bridge Output 1" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-P ↔ M170-A-8 | OEM-3-P "Rear O2 heater" [low_side_out] is wired to M170-A-8 "Half Bridge Output 2" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way. |
| warn | NET_FAMILY | OEM-3-V ↔ M170-A-56 | OEM-3-V "Cam position (CMP)" [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-3-Y ↔ M170-A-49 | OEM-3-Y "Crank position (CKP)" [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. |
| warn | NET_FAMILY | OEM-4-I ↔ M170-A-36 | OEM-4-I "Clutch switch" [digital_in] is wired to M170-A-36 "Analogue Voltage Input 6" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| warn | NET_FAMILY | OEM-4-J ↔ M170-A-35 | OEM-4-J "VTCS vacuum switch" [digital_in] is wired to M170-A-35 "Analogue Voltage Input 7" [analog_in]. Analog and digital on one net. A switch on an analog input works with a pull-up and a threshold; an analog sensor on a digital input loses its value. |
| info | NET_FAMILY | OEM-2-B ↔ M170-A-63 | OEM-2-B "Cooling fan relay" [low_side_out] is wired to M170-A-63 "Peak Hold Injector 3" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-C ↔ M170-A-66 | OEM-2-C "Condenser fan relay" [low_side_out] is wired to M170-A-66 "Peak Hold Injector 4" [injector_out]. Injector drivers can usually run general low-side loads; check current and PWM frequency. |
| info | NET_FAMILY | OEM-2-K ↔ M170-A-24 | OEM-2-K "A/C clutch relay" [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-2-M ↔ M170-A-42 | OEM-2-M "Fuel pump relay" [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-2-Q ↔ M170-A-62 | OEM-2-Q "ISC valve low side" [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-3-H ↔ M170-A-57 | OEM-3-H "Main relay" [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-2-N VTCS solenoid (intake butterflies); OEM-2-R Malfunction indicator lamp (MIL); OEM-3-D EGR boost solenoid; OEM-3-E Charcoal canister purge; OEM-3-M Alternator control; OEM-3-O Tachometer output; OEM-3-U Charge lamp; OEM-4-D VVT oil-control solenoid |
Accepted (0)
| Code | Subject | Reason | By |
|---|
Notes
Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Not wired: - OEM-2 N: VTCS solenoid (intake butterflies): no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-2 R: Malfunction indicator lamp (MIL): no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-3 D: EGR boost solenoid: no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-3 E: Charcoal canister purge: no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-3 M: Alternator control: no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-3 U: Charge lamp: no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-4 D: VVT oil-control solenoid: no free low_side/ls_hs/injector/hbridge on MoTeC M170 - OEM-3 O: Tachometer output: no free tacho/frequency_out/low_side/ls_hs on MoTeC M170
Sources
| Reliability | Kind | Title | URL | Archive | Captured | SHA-256 |
|---|---|---|---|---|---|---|
| 4 | vendor_doc | Link G4X MX5NB2X install manual (NB2 2001-05) | https://linkecu.com/documentation/MX5XNB2.pdf | archive | 2026-10-05 | 741efdd9f2c8 |
| 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 |