As most of you may know the fan relay is a solid state unit on the 96+ caravans.
My friend's caravan's a/c/rad fans are not coming on when they're supposed to and I checked out the fans today by directly connecting the fans to the battery and they work fine.
However, before I go out and buy a new fan relay from dodge I want to know if there is supposed to be a reference signal from the pcm module on the light green wire that hooks up to the fan relay.
When I jump the dark green wire and the gray wire the fans kick on high speed meaning that they work. But when I measure the reference signal from light green to ground there is nothing coming from the PCM.
Is there supposed to be no voltage from the pcm module?
How can I for sure confirm that the fan relay module is bad? Thanks