Possible to read out IAT from ECU and use with Zeitronix

[Jonas_R]

Is it possible to somehow read out the iat sensor from the ecu and use the signal for zeitronix?

I have it on pin 44 in the ECU.

I think I remember Paul mentioning something about using a resistor?

[UrS4boy]

Is it possible to somehow read out the iat sensor from the ecu and use the signal for zeitronix?

Not sure about Zeitronix but I have a TDS-1 that gets that IAT signal and displays it for me in the Autocheck screen:

http://www.efiexpress.com/catalog/pr...products_id=58

Intake air temperature sensor display:

Piggybacks on to the IAT sensor monitored by the ECU
Does not interfere with the ECU reading
Configurable display in degrees F or C
Includes peak-hold mode

Remember that the IAT is already a variable resistance device.

[Jonas_R]

I just found the thread with paul and I can see that it has fixed voltage across a variating resistor as you mentioned.

So I guess I need to meassure amp instead.

[UrS4boy]

I just found the thread with paul and I can see that it has fixed voltage across a variating resistor as you mentioned. So I guess I need to meassure amp instead.

This should be the graph that Paul used:



REF: G42 Intake Air Temp info: http://forums.quattroworld.com/s4s6/msgs/20996.phtml

[Jonas_R]

Thx.