microRusEFI should be set for Hall High-side jumper should be set for +12v https://rusefi.com/forum/viewtopic.php?t=1677 https://rusefi.com/wiki/index.php?title=Vehicle:Mazda_Miata_2003 https://github.com/rusefi/rusefi/wiki/Hardware/pnp_microRusEfi_nb2/hw72nb.pdf | Pin Number | Name | Type ID | Default function | | ----------:|:-------- | ------------ |:---------------------------------------------------- | | 2A | Inj 1 | Low-Side | Injector #1 | | 2B | Fan | Low-Side | Radiator Fan Control Relay Output | | 2C | A/C Fan | x | x | | 2D | Inj 2 | Low-Side | Injector #2 | | 2G | Inj 3 | Low-Side | Injector #3 | | 2J | Inj 4 | Low-Side | Injector #4 | | 2O | rusEFI WBO | x | x | | 2M | Fuel Pump | Low-Side | Fuel Pump Relay Output | | 2R | MIL | Low-Side | Check Engine Light output | | 2P | IAC Feed | x | x | | - | - | - | - | | 3A | GND | Ground | Ground | | 3B | GND | Ground | Ground | | 3F | Coil #1 | High-Side | Coil #1 control | | 3I | Coil #2 | High-Side | Coil #2 control | | 3H | Main Relay | Low-Side | Main Relay Control | | 3K | rusEFI USB PWR | x | x | | 3L | rusEFI CAN H | x | x | | 3M | Alternator | High-Side | Alternator Control Output | | 3N | rusEFI CAN L | x | x | | 3O | Tach | High-Side | Tachometer Output | | 3V | Cam | Hall Input | Cam shaft Hall Input | | 3U | Alt Warn | x | x | | 3Y | Crank | Hall Input | Crank shaft Hall Input | | 3Z | rusEFU USB GND | x | x | | - | - | - | - | | 4A | GND | Ground | Ground | | 4D | VVT Feed | x | x | | 4K | rusEFI 5v out | 5v | External MAP sensor power | | 4N | IAT | x | x | | 4O | GND | GND | Sensor Ground | | 4P | CLT | Temp Input | Coolant Temperature Sensor Input | | 4S | Key | 12V | +12v from Ignition Key | | 4V | TPS | x | x | | 4X | MAF not routed | x | x | | 4AF | Main Relay Power| 12V | +12v from Main Relay | | xx | x | x | x |