Search found 2 matches

by hal0persin
Thu Feb 22, 2018 6:33 pm
Forum: Diagnostic discussion
Topic: AC ripple test
Replies: 2
Views: 3954

Re: AC ripple test

I will retry my capture that way and see if the noise clears up. I am having an intermittent p0641 code for a 5 volt reference circuit. I checked the failure records and saw the reference voltage was at 1.1 volts when the code set but the sensors on that reference circuit read greater than 1.1 volts...
by hal0persin
Thu Feb 22, 2018 4:26 am
Forum: Diagnostic discussion
Topic: AC ripple test
Replies: 2
Views: 3954

AC ripple test

Guys I feel pretty dumb, I attempted to do a ripple test on a 2009 GMC sierra and the waveform has me stumped. I have never seen a waveform like this before but I think it is due to the ignition wires under the hood creating noise. Maybe if you guys take a look at the waveform you can enlighten me a...