NOTE: This is currently under development. This page might be wrong or change quickly.
Pinout
![connector pinout image](https://imgur.com/LvCaQ1o.jpg)
Pin Number |
Function |
Notes |
1 |
Ground |
Connect to chassis ground |
2 |
LSU Ip |
Connect to sensor pin 1 |
3 |
LSU Heater - |
Connect to sensor pin 3 |
4 |
LSU Heater + |
Connect to sensor pin 4 |
5 |
No connection |
|
6 |
12v Supply |
Connect to fuel pump supply or independent relay controlled by ECU |
7 |
No connection |
|
8 |
LSU Vm |
Connect to sensor pin 2 |
9 |
LSU Rtrim |
Connect to sensor pin 5 |
10 |
LSU Un |
Connect to sensor pin 6 |
11 |
CAN H |
CAN bus high |
12 |
CAN L |
CAN bus low |
LED decoding
Blue LED |
Green LED |
Meaning |
off |
fast flash |
sensor warming up |
off |
slow flash |
Sensor hot, operating normally |
flashing |
off |
See error code table below |
alternating |
alternating |
Bootloader, see below |
Firmware Update
coming soon...
Error Codes
Green LED off and blue LED flashing indicates an error. The blue LED will blink a certain number of times, with a 2 second pause, then repeats.
Blinks |
Meaning |
3 |
Sensor failed to heat up within 30 seconds |
4 |
Sensor overheated after entering closed loop mode |
5 |
Sensor unexpectedly cold after entering closed loop mode (bad wiring?) |
Bootloader LED Codes
Blink pattern |
Meaning |
alternating slowly |
Firmware integrity check failed, please retry firmware upgrade. |
alternating quickly |
Waiting for bootloader entry command, only occurs for ~1 second before launching firmware |
Source Code
The hardware and software source code are hosted here.