QuestionYesterday I was driving along and my front blower motor stopped working on my 2004 Pacifica. There are several breakers and relays...how do I know which one to replace?
AnswerInside the owners manual there should be a listing of your fuse box and relay box. You would look for the one labeled blower motor / fan motor or ac blower. But before you jump to the relay, check your fuse box to see if the fuse is blown. If you cannot find the listing in your owner's manual the chrysler dealer service department should be able to print it out for you.
But allow me to ask you a question. Does it run on any speed? The fan is controlled by a resistor block. The higher the speed the less resistors the voltage travels through. The lower speed the more resistors are utilized. If the lowest resistor is blown, the fan will not work at all. This could also be the cause.
I did a little bit of research on the internet and it seems the 03-05 pacifica seems to have a history of resistor blocks going bad.
The resistor block is located behind the glove box on the fan itself. You will have to remove the glove box and do a continuity check on the resistor block itself.
To do a continuity check you will need a multimeter. Put the multimeter on either continuity check or the resistance setting. put one terminal on the output terminal to the fan wiring harness, and touch each of the other terminals in turn. you should hear a beep or get a resistance reading on the multimeter at each terminal. If you read OL at any point, that is the indicator that the block is bad.
I hope this information helps, and thank you for the question.
