HELP!! Blower Fan quit working

Hello,

There is a blower motor relay that is out here are the blower motor and air conditioner wiring diagrams so you can see how the system works and a guide on how to test the relay.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here is the blower relay and fuse locations

Check out the diagrams (Below)

Please let us know what happens.

Cheers

Replaced the resistor. Nothing. Could a bad high relay cause the lower speeds not to work? When I switch to the high speed, I hear a click from the relay so I assume it's working. What else could cause this?

Just because the relay clicks does not mean it is working, did you try removing the relay and jumping it using a wire?

[quote:9495eaf795="Jacobandnickolas"]The one on the dash.[/quote:9495eaf795]

That's the only thing I haven't done yet. The unit powers up and everything but I haven't pulled the unit out to check to see if power is coming into or going out of the unit. There are voltage changes @ the resistor so I assumed that power was coming out of the unit.

Is there power to the resistor?

[quote:49a6dc10d1="Jacobandnickolas"]Is there power to the resister?[/quote:49a6dc10d1]

Yes.

If you have power to the resister, then it has to be getting to the motor. Did you check that?

[quote:7fd85b07d1="Jacobandnickolas"]If you have power to the resister, then it has to be getting to the motor. Did you check that?[/quote:7fd85b07d1]

No power to the motor. The voltage readings to the resistor are about half of what the manual says it should be at each speed. Just in case I jumped the motor from the battery and it spun fine. Is there something between the resistor and the motor?

I believe there is a relay. Check under the hood for the relay block and see if you can locate it.

Let me know.

Also, I'm a little confused. The resister is what changes the fan speed. The inside switch just sends power to different connectors on the resister. The power should remain consistant and change based on which section of the resister the power is sent to.

Let me know what you find. Also, let me know if there is 12 volts to the switch on the dash.

[quote:8bd25aa3b2="Jacobandnickolas"]I believe there is a relay. Check under the hood for the relay block and see if you can locate it.

Let me know.

Also, I'm a little confused. The resister is what changes the fan speed. The inside switch just sends power to different connectors on the resister. The power should remain consistant and change based on which section of the resister the power is sent to.

Let me know what you find. Also, let me know if there is 12 volts to the switch on the dash.[/quote:8bd25aa3b2]

Kia calls it a 'power transistor' There are only 3 pins on the plug that plugs into the transistor. I was told to check the voltage between pin 1 and pin 2 and that's where I got the different voltage readings based on the speed on the dash. We maybe talking about two different things. I know the hi-relay is getting something because it 'clicks' when I put it on high speed, but no power to the motor. Would the relay 'click' if it weren't getting power?

I would say no.

i have 2004 Kia Amanti been experiencing the same problems with the blower motor for the air condition I have change the relay on the passenger side and also the resistor also ran jumper wires to the blower motor and it ran fine at high speed. So I replaced the HVAC module which is where the power goes through and that fixed the problem I got a used one and installed it for $150.00. Just thought you guys should know.