I am working on a 02 accent that the heater stopped blowing air. I have replace the switch, fan motor, and the heater resister. What else could it be?

Quote:

---

Originally Posted by zues

I am working on a 02 accent that the heater stopped blowing air. I have replace the switch, fan motor, and the heater resister. What else could it be?

---

Are you getting power to the blower. Possibly faulty Blower relay. Check all the fuses and fusible links with a test lamp or meter.

Quote:

---

Originally Posted by zues

I am working on a 02 accent that the heater stopped blowing air. I have replace the switch, fan motor, and the heater resister. What else could it be?

---

Yes I am getting power to the blower motor and power to the resistor. When I turn the heat on I am getting power to the resistor and it increases as I turn up the heater switch. Now when I checked the power at the fan motor I got power when I turned it on but the power did not increase as I turned the heater switch up. This is why I thought it was the resistor but it still does not work with the new resistor. I found a relay or fuse under the hood but I don't know how to test it or if I would have power if it was faulty.

Quote:

---

Originally Posted by zues

yes I am getting power to the blower motor and power to the resistor. When I turn the heat on I am getting power to the resistor and it increases as I turn up the heater switch. Now when I checked the power at the fan motor I got power when I turned it on but the power did not increase as I turned the heater switch up. This is why I thought it was the resistor but it still does not work with the new resistor. I found a relay or fuse under the hood but I don't know how to test it or if I would have power if it was faulty.

---

With A/C or Heat on, full battery voltage is provided to the motor. The speed changes come from voltage drop across the resistor. On High, you have a direct path to ground to operate the fan at full speed.