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George H.
George H., Hyundai Technician
Category: Hyundai
Satisfied Customers: 18391
Experience:  Hyundai Gold certified, ASE Master tech 15+ years
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No power to heater fan switch, i have replaced the switch,

Customer Question

no power to heater fan switch, i have replaced the switch
JA: Is the power loss consistent, or does it fluctuate?
Customer: it will sometimes work but mostly not right now there is nothing
JA: What is the model/year of your Hyundai?
Customer: 2002 sonata 4 cylinder
JA: Are you fixing your Sonata yourself? What have you tried so far?
Customer: yes, have replaced the ignition switch and the blower switch
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 3 months ago.
Category: Hyundai
Expert:  George H. replied 3 months ago.

Hello I will help,

The switch is "downstream" of the motor and speed control. Can you check at the blower motor connector with the key on and the switch on high to see if there is power there?

Customer: replied 3 months ago.
the car is not here right now
Customer: replied 3 months ago.
thye car is not here right now
Expert:  George H. replied 3 months ago.

Ok, I am almost in bed tonight but will be back in the morning.

Can you test when you get the car and see if there is power to the motor? If there is then check at the other wire at the motor and see if there is 12 volts there with the connector plugged in? If you have power into the motor yet nothing at the other side it is time to replace the motor.

I will check back in the morning to see what your results are

Thanks