7.6 KiB
7.6 KiB
Connector Pinout
insert connector image/pins here
Rear side of PCB
Pin Descriptions
Each pin has a Type ID, which can be used to look up in the following tables what the pin is for, and what functions it can perform.
| Pin Number | Name | Type ID | Default function |
|---|---|---|---|
| 1 | 12V | 12V | 12V supply |
| 2 | GND | pgnd | Power GND |
| 3 | Lowside 2 | ls | Idle solenoid |
| 4 | ETB+ | etb | ETB+ |
| 5 | 12V | 12V | 12V supply |
| 6 | GND | pgnd | Power GND |
| 7 | Lowside 1 | ls | VVT |
| 8 | ETB- | etb | ETB- |
| 9 | Ignition 1 | ign | Ignition 1 |
| 10 | Ignition 2 | ign | Ignition 2 |
| 11 | Ignition 3 | ign | Ignition 3 |
| 12 | Ignition 4 | ign | Ignition 4 |
| 13 | GP out 6 | gp1 | Alternator |
| 14 | GP out 5 | gp1 | |
| 15 | USB D- | usb | USB |
| 16 | USB D+ | usb | USB |
| 17 | GND | sgnd | Signal GND |
| 18 | AN Temp 1 | at | CLT sensor |
| 19 | AN Volt 4 | av | |
| 20 | AN Volt 5 | av | |
| 21 | GND | sgnd | Signal GND |
| 22 | AN Temp 4 | at | |
| 23 | AN Temp 2 | at | IAT sensor |
| 24 | AN Temp 3 | at | |
| 25 | Cam (hall) | hall | |
| 26 | AN Volt 2 | av | TPS sensor |
| 27 | AN Volt 1 | av | MAP sensor |
| 28 | AN Volt 10 | av | |
| 29 | Main relay | mr | Main relay |
| 30 | AN Volt 7 | av | |
| 31 | AN Volt 3 | av | |
| 32 | AN Volt 6 | av | External wideband O2 sensor |
| 33 | GP out 3 | gp2 | |
| 34 | GP out 2 | gp2 | Fan relay |
| 35 | GP out 1 | gp2 | Fuel pump relay |
| 36 | AN Volt 8 | av | |
| 37 | Injector 1 | inj | Injector 1 |
| 38 | Injector 2 | inj | Injector 2 |
| 39 | 5V Sensor 2 | 5v | MAP sensor supply |
| 40 | AN Volt 9 | av | |
| 41 | Injector 3 | inj | Injector 3 |
| 42 | Injector 4 | inj | Injector 4 |
| 43 | GP out 4 | gp2 | |
| 44 | 5V Sensor 1 | 5v | TPS sensor supply |
| 45 | VR+/Hall | vr/hall | Crank VR+/hall |
| 46 | VR- | vr | Crank VR- (do not connect if hall) |
| 47 | CAN low | can | CAN bus |
| 48 | CAN high | can | CAN bus |
Pin Types
These tables provide technical information about the different types of pin found on microrusEfi.
Power
| ID | Type | Notes & Limits |
|---|---|---|
| 12V | Power supply | 9-22V operating, 5A fuse recommended |
| pgnd | Power ground | Solidly ground directly to chassis or engine block. |
| sgnd | Signal ground | Sensor ground. Do not ground to engine! |
| 5v | 5V sensor supply | 5V supply for external sensors. 200mA maximum per pin. |
Input
| ID | Type | Notes & Limits | Possible functions |
|---|---|---|---|
| at | Analog temperature | Analog temperature (thermistor) input. 2.7k/TBD pullup resistor to 5v | Thermistor temperature sensor, fuel level sender (variable resistor type) |
| av | Analog voltage | Analog voltage input. 500k pull down to GND | Analog voltage sensor (MAP, TPS, acc pedal, oil pressure, etc) |
| vr | Variable reluctor | VR crank input | VR sensors including crank, cam, vehicle speed |
| hall | Hall cam/crank | TBD pull up to 5v hall sensor for cam/crank | Hall sensors including crank, cam, vehicle speed |
Output
| ID | Type | Notes & Limits | Possible functions |
|---|---|---|---|
| inj | Injector output | Low side, 2.2A maximum Only saturated (high impedance) injectors are supported. |
Injector, general purpose low side |
| ign | Ignition output | 5V push-pull, 250mA maximum | Ignition coil, general purpose 5V push-pull |
| ls | High power low side | General purpose low side output, 4.5A maximum | General purpose low side, injector |
| gp1 | General purpose push-pull | General purpose push-pull output, 5V/12V (internally selectable) 250mA maximum | General purpose 5V/12V push-pull, ignition coil |
| gp2 | General purpose push-pull | General purpose push-pull output, 12V 500mA maximum | General purpose 12V push-pull |
| mr | Main relay | Dedicated main relay output. Low side turned on with power, 800mA maximum. | Main relay |
| etb | Electronic throttle | Dedicated electronic throttle outputs. Connect a brushed motor throttle body directly to these two pins. |
Communication
| ID | Type | Notes & Limits |
|---|---|---|
| usb | USB | USB tuning interface |
| can | CAN bus | CAN communication |
USB cable green wire: USB D+ DATA+ USB cable white wire: USB D- DATA- USB cable black wire: ground USB cable red wire: +5v (optional)
Hall type Crank sensor
R9=DNP R15=DNP R17=2.7K pull-up to 5v
R12=10K R13=0R
