IAT and CLT fixed values

77e21turbo · Post by **77e21turbo** » Tue Sep 01, 2009 5:25 am

After a 12v on vref circuit replaced D19 everything seamed to work ok but I noticed IAT stuck at 70 deg and CLT at 180 default. I checked all the resistors and capacitors their all ok. Their is 5v on pin 20 and 21 . sensors and wireharness on vehicle check out ok. I'm thinking something else got zapped with the 12v. If anyone has any ideas or has had this problem please let me know Thanks Jared ms2 3.0

Matt Cramer · Post by **Matt Cramer** » Tue Sep 01, 2009 7:04 am

Do you have this problem just on the vehicle, or is it also an issue on the Stim?

77e21turbo · Post by **77e21turbo** » Tue Sep 01, 2009 9:03 am

I don't have a stim to use as a diag aid

Matt Cramer · Post by **Matt Cramer** » Tue Sep 01, 2009 11:11 am

A Stim would really help, but you can try backprobing the sensors on the wire that goes to the MS and check the voltages there.

77e21turbo · Post by **77e21turbo** » Tue Sep 01, 2009 11:28 am

Thats what I will do tonight. but I think the processor could be damaged from 12v but TPS works ok

77e21turbo · Post by **77e21turbo** » Tue Sep 01, 2009 3:09 pm

Checked both circuits unplugged has vref 5v plug in thermistors and drops down to 4.11 volts but does not change on megasquirt also recalibrated thermistors still no change problem has to be within megasquirt.processor?

Matt Cramer · Post by **Matt Cramer** » Wed Sep 02, 2009 5:29 am

You could try reloading the code.

77e21turbo · Post by **77e21turbo** » Wed Sep 02, 2009 5:53 am

That was the first thing that was done but i'm ready to try it again

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IAT and CLT fixed values

IAT and CLT fixed values

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Re: IAT and CLT fixed values

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Re: IAT and CLT fixed values

Re: IAT and CLT fixed values

Re: IAT and CLT fixed values