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George H.
George H., ASE Certified Technician
Category: Toyota
Satisfied Customers: 18308
Experience:  ASE Master Tech 15+ years
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Where is the a/c fuse in a 1999 toyota avalon

Resolved Question:

where is the a/c fuse in a 1999 toyota avalon
Submitted: 6 years ago.
Category: Toyota
Expert:  George H. replied 6 years ago.

Hello I will help you with your question,


Do you have manual or automatic air and do you need the fuse for the Compressor, Blower or control head?



Customer: replied 6 years ago.
automatic air and it should be the fuse for the compressor as right now we have no power going to the compressor
Expert:  George H. replied 6 years ago.

The power is supplied from the 10 amp Heater fuse through the magnetic clutch relay to the compressor. If the relay is not turned on by the AC amplifier the power will not be supplied to the compressor. The relay is turned on in response to the control head signals.


To answer your question the fuse is marked heater in this diagram of the instrument panel junction block as shown below





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