Hello everyone. I've been trying to wrap my head around this car I've been working on for a friend of mine who's a teacher with like 4 kids etc and I'm trying to help her out. Anyway I just can't figure out what's going on and I figure I drop a line on here just to give it a shot.
It's a 13 dodge avenger 3.6 and for some reason the fans won't turn on with the a/c on in the vehicle. I just recently replaced the alternator and the condenser on the vehicle and when I went to charge the system, I noticed high side pressure jumping to about 250+ and fans staying off so I stopped charging.
I then noticed that the fans don't turn on with the ignition in the on position and a/c selected as usual, so I disconnected hoses. I jumped the fan relay, which was getting power from the vehicle, on post 80 and 37 to jump the circuit and turn on the fans and nothing happened. Got no power to fan from harness on my multimeter either.
Now when I borrowed a snap on scan tool, I was able to command the fan relay on and off with the tool and the fans did turn on and off. Whenever I commanded them they responded.
So they do work mechanically and can turn on with the scan tool, but not when I turn the ignition to on and put the A/C on. Every car I know, ignition on and A/C commanded on and the fans turn on. Not this time. And I'm sure it will keep building pressure until it blows pressure switch because there's no fan there to cool off the condenser.
So I think its the PCM somehow, like the driver module inside the pcm, what do u fellows think? Thank you in advance!
It's a 13 dodge avenger 3.6 and for some reason the fans won't turn on with the a/c on in the vehicle. I just recently replaced the alternator and the condenser on the vehicle and when I went to charge the system, I noticed high side pressure jumping to about 250+ and fans staying off so I stopped charging.
I then noticed that the fans don't turn on with the ignition in the on position and a/c selected as usual, so I disconnected hoses. I jumped the fan relay, which was getting power from the vehicle, on post 80 and 37 to jump the circuit and turn on the fans and nothing happened. Got no power to fan from harness on my multimeter either.
Now when I borrowed a snap on scan tool, I was able to command the fan relay on and off with the tool and the fans did turn on and off. Whenever I commanded them they responded.
So they do work mechanically and can turn on with the scan tool, but not when I turn the ignition to on and put the A/C on. Every car I know, ignition on and A/C commanded on and the fans turn on. Not this time. And I'm sure it will keep building pressure until it blows pressure switch because there's no fan there to cool off the condenser.
So I think its the PCM somehow, like the driver module inside the pcm, what do u fellows think? Thank you in advance!
