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Re: 2003 Camry A/C and Heater fan only works on High
The heater fan resistor has failed. This is the device that controls the voltage to the fan motor, on the 3 lower speds, The resistor is bypassed when HIGH is selected. It is located under the dash, passenger side, on the box between the heater fan blower housing and the main heater box at the center. Held in by 2 phillips screws. Easy to change.Hope this helps, and Thanks for choosing FixYa. Please feel free to comment back if you have any other questions.
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It sounds like the resistor block for your heater/AC fan has gone bad. Here's a link to a few I found on line for the 1999 camry to give you an idea of the cost. When the resistor block goes bad the motor defaults to its highest setting.
The fan speed resistor is the problem........when you are on full speed the current bypasses the resistor and this is what gives you the fastest speed from the fan motor.......on 1, 2, or 3 speed setting, it is directed through the fans speed resistor circuit
It is located in the air box behind the glovebox on the interior of the car passenger side
It probably is the fan switch itself. They are around $30. for a new one. You can take it out and check to see if you have power to all the settings with a ohm meter or test light. They are not real hard to take out.
Your blower motor resistor has gone bad, it should be located next to your blower motor in the car, held in place with a couple of screws, remove it and replace it. The resistor is responsible for making the blower motor run at slower speeds than high or (4). Let me know if this helps.
fan blower speed switch under hood usually in fire wall or in heater box under dash area if you do not change it you will keep losing all your speeds until nothing left! it is not!!!!the one in your dash that you hand operate! hope this helps.John
You have to replace the resistor that controls the fan speed. I have a 1990 camry and it happened to me before. The resistor is usually located under the glove compartment and held by one or two screws. If you can't find it, go to PEP Boys and get the Haynes manual for your model car...trust me, it's worth the money and you will find where it's located. Go to your Toyota dealer and buy the part..It should cost around 30 to 35 bucks. Replace and you'll be fine.