Hello
And sorry for my first post who I ask for problems and for help
Actually I write for my friend who own Lexus 430 2003 model
the car record fault code po100 who means maf sensor didn't work
We have replace the maf also we check the wire from maf to eco and looks ok.
The problem still exist so I suspect that ecu have problem
I search the internet to find a pinout of ecu, I find it and I have notice that the pin e4-26,e4-27 is the input from the maf
But I don't understand what voltage I have to read on ecu pins.
On the maf connector I measure 5v. Also the temperature work also
So I think that from 5 pin connector 1 is power 5volt, 2 is ground , 3,4 is maf output , and 5 is temperature, I write what I think that 5 wire is not the position.
Because I am electronic engineer and my work is micro soldering maybe I can fix ecu if it have problem.
I am asking what is the correct values on pins or if it possible the pinout of ecu with pin description.
The ecu is 3UZ-FE
Thanks in advance
