Page 1 of 1
PWM IAC, Protection Diode?
Posted: Wed Feb 19, 2014 10:19 am
by wes kiser
In the past (cased ms2's, ms3's, and usquirt module based ecu's), in every istance in which I have used a PWM IAC valve, I installed a protection diode on FIDLE (and I know ford did in their OE installations as well). I assume this is still required, and is not "build it/onboard" the microsquirt (v 3.0 if it matters)? I have done half a dozen usquirt installs, but never with a PWM idle valve.
Re: PWM IAC, Protection Diode?
Posted: Thu Feb 20, 2014 5:29 am
by Matt Cramer
It is on board the MicroSquirt.
Re: PWM IAC, Protection Diode?
Posted: Thu Feb 20, 2014 5:56 am
by dontz125
<ob pedantic> The MOSFET used for the Idle pin has an inherent diode in its construction (as all MOSFETs do). There is no discrete diode on the uS, which is why you aren't seeing it on the schematic. </smart bum>
Re: PWM IAC, Protection Diode?
Posted: Thu Feb 20, 2014 12:58 pm
by wes kiser
Thanks.