AM2 Fuse keeps blowing

2001 TOYOTA COROLLA
150,000 MILES
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ADM_20077
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My Corolla's AM2 fuse keeps blowing, and when I replace it the engine will start up, but then the fuse will blow. This leads me to believe that there is a shortage of some sort but I don't know exactly where. I would like to know where the AM2 fuse leads to? And where to look
Jul 14, 2013 at 1:56 PM
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KHLOW2008
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There is a short in the system and the diagrams shows all the components that are linked to this fuse. You need to be checking for faults with these. Try pulling all of the lower fuses and installing them one at a time until you find the fuse that blows.

If any repairs was carried prior to this, check the area around them. Check wiring harness for damage.
Jul 14, 2013 at 6:17 PM
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ADM_20077
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Thank you I have been looking for the diagram and wasnt able to find it
Jul 14, 2013 at 8:56 PM
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KHLOW2008
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You're welcome and good luck
Jul 15, 2013 at 7:35 AM
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BKPO2003
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Referring to diagram: am I wrong in thinking the fault would not be found in any of the 3 blk/org wired circuits (F4,A4,J8) that are south of the 7.5 amp IGN fuse? IOW, wouldn't the IGN fuse blow first, and therefore prevent AM2 fuse from blowing?
Sep 22, 2015 at 10:25 AM
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STRAILER
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Any fuse of lower rating should blow first before the higher rated ones.

It makes me think the short is in the ignition switch itself.

Please run some tests and get back to us so we can continue helping you.

Best, Ken
Dec 29, 2016 at 6:36 PM
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DADDYHERB
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2carpros Ken, I have the same problem he did. My am2 fuse keeps going. I have a 1998 Toyoto Camry, 4 cylinder. I have unplugged the coil packs, unhooked the alternator and starter. One at a time and still blew the fuse when I tried to start it. I replaced the ignition switch yesterday, only to want to pore gas on the car and throw a match at it. Still blew. I've traced all the wires the best I can and can not find a bad spot in any of them. Any ideas?
Jun 19, 2017 at 10:37 AM
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CARADIODOC
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How many fuses have you gone through so far? Here's a better approach. A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a 12 volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it's not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.
Jun 19, 2017 at 10:17 PM