MoTeC Global Forum

Hi guys I have a M800 and I am wanting to fit a 3 wire fuel pressure sensor. Now I wasn't given a diagram for the ecu can anyone help me out and tell me the pins on the ecu harness connector to hook up this sensor please??? Thanks for your help

Ok guys can someone help me out here as I have been given some info on this wiring in my fuel pressure sensor and it doesn't make sense to me

I have been told this

Note 3
+5V ENG PIN A2
+5V AUX PIN A9
0V ENG PIN B16
0V AUX PIN B15

Analog volt input pins A15, A16. A17, A25. B20, B21, B22


So what I want to know is what ones do I use ENG or the AUX for fuel pressure sensor

Also does 0v mean earth and the analog I out would be the signal wire??

Can someone please help me out here no shop seems to be able to help me or can answer it

Hi,

You can use either of the Engine or Aux pins for the sensor, it is more important that you use the matching 5V and 0V pins, if the car is already wired quite often the Aux pins haven't been populated and are easily available as well.

The signal wire from the sensor is connected to a free AV input pin.

The pin marked Ground on the sensor is connected to the 0V on the ECU. Compared to a ground pin, the 0V is shielded against fluctuations that may be caused by other devices on the vehicle ground circuit that can effect the operation of the sensor, if the sensor was directly connected to the ground.