IAT 123.4F...??

mcneil · Post by **mcneil** » Mon Feb 02, 2009 5:30 pm

I have a check engine light for the IAT and s manager reads to 123.4f all the time. i checked the wiring, and i changed the conversion harness to another, and same thing. I used 2 different sensors, and same thing also.

I was looking at the fuel compensation and wondered if possibly the values are incorrect?

they are as follows.

-40 107 141 168 302
-0.00 -0.00 -3.00 -5.25 -5.25

??? This is what was there when i loaded on Stockb20bnonvtec.

Post by **Hondata** » Tue Feb 03, 2009 9:05 am

It is not related to the compensation.

Once the ECU detects an error with a sensor, it uses a default value for that sensors, in this case 123 degrees.

cranny · Post by **cranny** » Wed Feb 04, 2009 6:29 pm

im sure it uses 123 cause the values under 123 are all 0. meaning there is no adjustments using that sensor.

we still hgave to test for continuity in the wire from ecu to IAT bran.

there is power getting to the IAT , and when using a multimeter on the other wire , you can warm the sensor or cool it and see a voltage change. the ecu just isnt seeing it. but like i said , we have yet to test the wire from IAT to ecu for continuity.