(Megasquirt 2 V3.0) Hello, I am using a 3 wire Bosch IAC on a Porsche 944 S2 and I saw that in the assembly guide there are different methods of wiring the board for different IAC valves. I think that what I have is a stepper IAC. I have also found a picture on google that has the 3 wire IAC that goes
FIdle output
+12 ignition feed
Ground with a resistor
Do I go ahead and make the jumps per the instructions and then go Fidle output to the IAC?
Thank you so much, Chris
IAC
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: IAC
3 wire is PWM, not stepper, and wires as you described.
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Datbeardo944
- MegaSquirt Newbie
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- Joined: Tue Apr 04, 2017 9:43 am
Re: IAC
Okay, so it is PWM, thank you for that. So, then I should connect JS0 to IAC1A, JS1 to IAC1B, JS2 to IAC2A, and JS3 to IAC2B?
Again, thank you so much for all the help. I am super new to anything like this and I know that I bit off more than I can chew but I am excited to learn!
Thank you, Chris
Again, thank you so much for all the help. I am super new to anything like this and I know that I bit off more than I can chew but I am excited to learn!
Thank you, Chris
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: IAC
Sure, I'd run the standard stepper jumpers as they can be put to other uses.