Would it be Possible to run 3-wire Idle valve on one of the IAC Outputs. ( I know it's not currently supported)
But would it be feasible, As the H-Bridge is by norm a sort of Push-Pull set up? (ie. IAC1A <- Power -> IAC1B)
I would love to try but unfortunately the Option for IAC1 or 2 is not available under Fidle PWM output.
Please, if I am totally farting in the wind let me know... and why...
Kindest Regards
Gordon.
IAC output/s to control 3-Wire Idle Valve?
Moderators: jsmcortina, muythaibxr
-
- Site Admin
- Posts: 39619
- Joined: Mon May 03, 2004 1:34 am
- Location: Birmingham, UK
- Contact:
Re: IAC output/s to control 3-Wire Idle Valve?
I'm pretty sure that the current capacity of the H-bridge driver is too low for typical PWM valves.
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
-
- Master MS/Extra'er
- Posts: 612
- Joined: Fri Feb 25, 2011 4:28 pm
Re: IAC output/s to control 3-Wire Idle Valve?
James If we drive 2 tip120 from one iac output and its complementary pin it should work.
-
- Experienced MS/Extra'er
- Posts: 305
- Joined: Thu Feb 12, 2009 6:58 pm
- Location: Manassas, Virginia
Re: IAC output/s to control 3-Wire Idle Valve?
If you search you can find schematics for a circuit to drive a "traditional" 3 wire PWM IACV.
However make sure that's the kind of valve you have. There are many 2000 and newer cars that have a 3 wire connector but it is power ground and a 5V digital PWM that does the controlling.
I posted about this before
http://www.msextra.com/forums/viewtopic.php?t=64781
However make sure that's the kind of valve you have. There are many 2000 and newer cars that have a 3 wire connector but it is power ground and a 5V digital PWM that does the controlling.
I posted about this before
http://www.msextra.com/forums/viewtopic.php?t=64781
Don't Talk About it,,,Just Do It!
1993 Toyota P/U 22RE V3.0 MS2/Extra 3.4.2 Full sequential Injection & Spark
1993 Toyota P/U 22RE V3.0 MS2/Extra 3.4.2 Full sequential Injection & Spark