Question about 2004 Dodge Ram 1500
Ok here it is I replaced the resistor the HVAC controls the the relays under the hood in the fuse box and there is still no power at the wires going into the blower. i even hook up the blower motor directly to power to make sure its working and it is. I am at my ends here and don't know what to do with this thing anymore if anyone has any insight it would be awesome! thank you
Have you actually tested any of the fuses or relays for power ?
Fuse number 2 is hot from the key switch and powers the blower relay. Fuse number 12 is a 40amp fuse that gets power from the battery and powers the blower motor thru the relay.
Are both fuses hot with the key on ?
Posted on Jul 12, 2013
Testimonial: "So I got it figured out the fuses were all ok, it was the power leading to the ignition when I put pressure on the harness itself (at thr steering wheel) it started blowing."
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Posted on Jan 02, 2017
SOURCE: 1999 Grand AM Heater blower
Your Resister module for blower speeds is shorted, follow the wire from your blower it will connect to it, should be in blower duct near blower motor, two screws remove and pull from duct and replace or repair, I have been able to resolder them sometimes.
Posted on Dec 28, 2008
SOURCE: 04 stratus blower not working
You might have an interconnection problem. I hate these problems, they can be really tough. I had something similar that turned out to be a bad ground connection, but you said that "Relay in box under hood is good and has 12.5 volts going to 1 post"... well OK, good, but then you said "switched the Relays around and everything else worked fine"... well OK, but if it didn't work fine before, you may have a bad relay or maybe a bad connection, so swap them back and see what happens to help isolate the problem. You also said "Ran hot to fan and it works", well in that case, it's not a ground connection at the fan, but still could be further back. It could be bad relay. Good luck to you on that one... as I said... I really hate these kinds of problems. Try to get hold of a wiring diagram if you haven't already. This problem is going to take some patience, but you’ll find it.
Posted on Jun 09, 2009
You may have 2 problems - the blower motor I believe should have power all the time and the speed is controlled by grounding the circuit through the various resistors. I think you need to get some wiring diagrams.
Posted on Jun 27, 2009
no. the relays coil is fused # 12 fuse 10 amp and the other side is going directly to ground. the main power for blower goes through that relay and it is fused at # 107 and it is a 40 amp fuse. now the heater control unit witch is what they dials are controls the ground to the blower motor at different resistances with is determine by the dial to change speed.
now if you don't have power with key on at the blower motor i would check them to fuses and if they are okay you need to check the ground at relay socket witch will be the corresponding cavity for # 85 on the relay. if you have all of that and sill no power at blower replace relay.
but to tell you what i see most common is the blower resistor for the motor.
let me know if you have any more question and good luck
Posted on Nov 26, 2009
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