Im using a Microsquirt module 2.2m
From my understanding the IAT should have 5v but i get 12v. i went through and checked with a multimeter to see where and what volts i get.
I found i get 5v at vref and coolant temp pin
Also get 5v at one side of R7 but 12v on other side but it reads 2.39ohm with power off.
I get 12v on both sides of R8 and 12 v on one side of c15 and c16 and ground on the other.
It sounds like resister r7 is bad but it reads good resistance through it, could this still be the problem?
heres some paint drawling to explain more
Thanks,
Steve
IAT doesn't read and gets 12 volts
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
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nomansland92
- MegaSquirt Newbie
- Posts: 1
- Joined: Tue Apr 26, 2016 12:32 pm
Re: IAT doesn't read and gets 12 volts
*wow* It sounds like you have the VRef hooked up to 12v in the wiring somehow. Unplug the harness, check voltage on the VRef wire vs ground. You may have done very bad things to your processor.
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Matt Cramer
- Super Squirter
- Posts: 910
- Joined: Sat Jul 03, 2004 11:35 am
Re: IAT doesn't read and gets 12 volts
The less destructive possibility is that the ECU is not grounded.
Matt Cramer at DIY Autotune
