Hi speed fan not working
I noticed my temperture creeping higher than usual on occasion, because a friend overheated the car a few years ago needing a new headgasket etc I do keep a eye on temps now.
I found the high speed fan failed to execute when using the fiatecuscan software, on checking the relay for the high speed fan isn't being switched on, the low speed is working fine.
If I bypass the relay the fan runs, so seems to be something with the switching, could be ECU problem as I see 12v at one terminal and 3v at the other on the switching side of the relay.
Any idea's whats going on?
I've currently bypassed the resistor on the low speed side to give me a high speed fan constantly, but would prefer to get it running right