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Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14356
Experience:  Toyota Master Diagnostic
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Toyota Camery: 10 amp fuse blows when ac is turned on. in normal

Customer Question

10 amp fuse blows when ac is turned on. in normal mode it works perfectly (that is without ac on) . Changed the resistor and fan had been changed about 8 months ago.
Submitted: 1 year ago.
Category: Toyota
Expert:  Skyvisions replied 1 year ago.
Which fuse specifically of the 10 amp fuses is blowing do you have the name and specific location? Does this fuse pop only when you push the A/C button on to engage the air conditioning system otherwise the blower and all the controls work normally without blowing the fuse?
Customer: replied 1 year ago.
The 10amp fuse that blows is the second to the left marked Heater 10A. This is located in the drivers side compartment. The fuse blows when the a/c button is pushed on.
Expert:  Skyvisions replied 1 year ago.
The four-cylinder or V-6? If you pull the MG CLT relay in that fuse box does the 10 amp heater fuse still blow?
Customer: replied 1 year ago.
The car is 4 cyl. After I pulled the MG CLT relay the fuse did not blow. The a/c button started to blink.
Expert:  Skyvisions replied 1 year ago.
What you're going to find is that the short is in the magnetic clutch circuit more than likely. Install the magnetic clutch relay then disconnect the connector to the air conditioning compressor. Two things is either happening is the wiring right there at the compressor has rubbed through or the actual magnetic coil on the end of the compressor is shorting the ground. The other leg of the circuit goes to the number three fan relay but if the fans are working normally it's not likely in that leg of the circuit. The most common issue is the wiring going to the A/C compressor or the magnetic clutch itself. Let me know how goes.
Customer: replied 1 year ago.
Installed MG CLT. Disconnected the wiring to compressor NO blown fuse.
Expert:  Skyvisions replied 1 year ago.
This confirms that the short is in the wiring on the compressor or the compressor clutch itself..