MoTeC M84 pinout
ecurecovery.com/pinouts/motec/m84 · Every pin checked against 2 MoTeC documents · data checked 2026-11-01
Pinout
MoTeC M84 pinout
Every pin of the 34-pin A and 26-pin B connectors, with MoTeC's own pin names. Tap a pin to see what it does.
Every pin checked against 2 MoTeC documentsPick any pin on the drawing or in the table to see its function and the documents it was checked in.
MoTeC M84 connector A pinout (34-pin)
Mating connector: MoTeC #65044 (34 pin waterproof connector)
| Pin | Function |
|---|---|
| A1 | Auxiliary Output 2 (AUX2) |
| A2 | Sensor 5V (5V-ENG) |
| A3 | Low Side Ignition 1 (IGN1) |
| A4 | Low Side Ignition 2 (IGN2) |
| A5 | Low Side Ignition 3 (IGN3) |
| A6 | Low Side Ignition 4 (IGN4) |
| A7 | Low Side Ignition 5 (IGN5) |
| A8 | Low Side Ignition 6 (IGN6) |
| A9 | Auxiliary 5V (5V-AUX) |
| A10 | Battery Negative (Ground) |
| A11 | Battery Negative (Ground) |
| A12 | Sensor 8V (8V-ENG) |
| A13 | Auxiliary and CAN 8V (8V-AUX) |
| A14 | Throttle Position Input (AV1 TP) |
| A15 | Manifold Pressure Input (AV2 MAP) |
| A16 | Mass Air Flow Input (AV3 MAF) |
| A17 | Fuel Pressure Input (AV4 FP) |
| A18 | Auxiliary Output 1 (AUX1) |
| A19 | Injector 1 (INJ1) |
| A20 | Injector 2 (INJ2) |
| A21 | Injector 3 (INJ3) |
| A22 | Injector 4 (INJ4) |
| A23 | Auxiliary Output 3 (AUX3) |
| A24 | Auxiliary Output 4 (AUX4) |
| A25 | Oil Pressure Input (AV5 OP) |
| A26 | Battery Positive (V BAT) |
| A27 | Injector 5 (INJ5) |
| A28 | Injector 6 (INJ6) |
| A29 | Injector 7 (INJ7) |
| A30 | Injector 8 (INJ8) |
| A31 | Auxiliary Output 5 (AUX5) |
| A32 | Auxiliary Output 6 (AUX6) |
| A33 | Auxiliary Output 7 (AUX7) |
| A34 | Auxiliary Output 8 (AUX8) |
MoTeC M84 connector B pinout (26-pin)
Mating connector: MoTeC #65045 (26 pin waterproof connector)
| Pin | Function |
|---|---|
| B1 | Crank Reference Input (REF) |
| B2 | Cam Sync Timing Input (SYNC) |
| B3 | Air Temp input (AT1 AT) |
| B4 | Engine Temp input (AT2 ET) |
| B5 | User Analog Temp Input (AT3 User2) |
| B6 | Switch Input 4 (AT4 SW) |
| B7 | Switch Input 5 (AT5 SW) |
| B8 | Left Drive Speed (DIG1) |
| B9 | Right Drive Speed (DIG2) |
| B10 | Left Ground Speed (DIG3) |
| B11 | Right Ground Speed (DIG4) |
| B12 | Lambda2 Sensor input (LA2-S) |
| B13 | Lambda2 Pump Current (LA2-P) |
| B14 | Comms 0V (0V-Comms) |
| B15 | Auxiliary 0V (0V-AUX) |
| B16 | Sensor 0V (0V-ENG) |
| B17 | RS232 Transmit Data (TX-232) |
| B18 | RS232 Receive Data (RX-232) |
| B19 | Switch Input 6 (AT6 SW) |
| B20 | Analog Voltage Input 6 (AV6) |
| B21 | Analog Voltage Input 7 (AV7) |
| B22 | Analog Voltage Input 8 (AV8) |
| B23 | CAN Comms High (CAN_HI) |
| B24 | CAN Comms Low (CAN_LO) |
| B25 | Lambda1 Sensor Input (LA1-S) |
| B26 | Lambda1 Pump Current (LA1-P) |
MoTeC M84 pins at a glance
- Which pins are CAN on the MoTeC M84?
- CAN Comms High (CAN_HI): pin B23. CAN Comms Low (CAN_LO): pin B24.
- Which pins are the crank and cam inputs on the MoTeC M84?
- Crank Reference Input (REF): pin B1. Cam Sync Timing Input (SYNC): pin B2.
- Which pins are the injector outputs on the MoTeC M84?
- Injector 1 (INJ1): pin A19. Injector 2 (INJ2): pin A20. Injector 3 (INJ3): pin A21. Injector 4 (INJ4): pin A22. Injector 5 (INJ5): pin A27. Injector 6 (INJ6): pin A28. Injector 7 (INJ7): pin A29. Injector 8 (INJ8): pin A30.
- Which pins are the ignition outputs on the MoTeC M84?
- Low Side Ignition 1 (IGN1): pin A3. Low Side Ignition 2 (IGN2): pin A4. Low Side Ignition 3 (IGN3): pin A5. Low Side Ignition 4 (IGN4): pin A6. Low Side Ignition 5 (IGN5): pin A7. Low Side Ignition 6 (IGN6): pin A8.
- Which pins are ground on the MoTeC M84?
- Battery Negative (Ground): pins A10, A11. Comms 0V (0V-Comms): pin B14. Auxiliary 0V (0V-AUX): pin B15. Sensor 0V (0V-ENG): pin B16.
- Which pins power the MoTeC M84?
- Battery Positive (V BAT): pin A26.
- Which pins are the sensor supplies on the MoTeC M84?
- Sensor 5V (5V-ENG): pin A2. Auxiliary 5V (5V-AUX): pin A9. Sensor 8V (8V-ENG): pin A12. Auxiliary and CAN 8V (8V-AUX): pin A13.
- Which pins are the wideband sensor connections on the MoTeC M84?
- Lambda2 Sensor input (LA2-S): pin B12. Lambda2 Pump Current (LA2-P): pin B13. Lambda1 Sensor Input (LA1-S): pin B25. Lambda1 Pump Current (LA1-P): pin B26.
MoTeC M84 pinout sheet
A printable sheet with every pin, made from the checked data on this page.
Where this comes from
Only MoTeC's own documents. Pin names and notes are written exactly as MoTeC writes them.
MoTeC datasheet
MoTeC user's manual (pin list by function)
How we checked it
- We start from the pin list in MoTeC's user's manual for this ECU (Appendix L: Pin list by Function).
- We read every pin again in a second MoTeC document: the ECU's wiring diagram (for the M84, its datasheet). A script compares them pin by pin; where a diagram label sits between two pins, we read it by eye.
- A pin is only shown when both documents name the same function. Pins the manual marks as not available on this model are shown as not used. MoTeC sets no standard wire colours, so none are shown.
- Notes are MoTeC's own words from the manual.
ECU Recovery is not affiliated with MoTeC. MoTeC and its product names are trademarks of MoTeC. If your harness came with its own diagram, check your wiring against it.
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