Main IndexAuto Repair Home Search Posts SEARCH
Who's Online WHO'S
Log in LOG

Search Auto Parts

Lots Not Working

  Email This Post

New User

Apr 4, 2015, 7:50 AM

Post #1 of 4 (877 views)
Lots Not Working Sign In


My 1991 Toyota Camry, automatic transmission with 4 cylinders has an electrical issue. There is a 1O amp fuse for the circuits that control the automatic shoulder belts, power windows, front heater and defroster and rear defroster. This 10 amp fuse will blow sometimes as soon as you start the car, or sometimes hours after the car is started and driven, thus making the issue intermittent. Can you please tell me how to find the problem and fix it?

Thank You

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 4, 2015, 8:17 AM

Post #2 of 4 (868 views)
Re: Lots Not Working Sign In

Hope you have the original owner's manual for what fuse cover what and the amp rating for the exact slot. 10 amp may be involved but isn't enough for all those things or would blow. THAT DOESN'T MEAN PUT A STRONGER ONE IN!!!!

Chances are another issue is causing an intermittent overload for it down the line,



Apr 4, 2015, 11:20 AM

Post #3 of 4 (861 views)
Re: Lots Not Working Sign In

If the fuse blows even when all the connected things are off, then I would expect the problem to be a wire that had the insulation come off. That way it could go hours of driving before it bumps into a ground, but when it does, the fuse goes off. On the flip side, it could already be touching a ground when you start the car. A wire like this would be a big pain to find... I would start by looking for a wire that is obviously falling apart, and then checking if it is on the same problematic circuit.

If the fuse only blows when one of the connected accessories is trying to run, then the problem is probably in that particular accessory.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 4, 2015, 11:57 AM

Post #4 of 4 (852 views)
Re: Lots Not Working Sign In

If you don't see something right at where the fuse is and wires there the hunt in on. I don't have a diagram for where it goes from there but if a 10 amp fuse is in fact the correct fuse then it must be there telling a relay or other central item elsewhere just that the car has ignition in run or on position such that it's enabling those things to operate.

Those are high draw items so this may branch off to other fuses and relays but if this one only enables all the others the problem is most likely between wire to it and the next item in line.

Ya - these can be a chase down to find right where. Maybe put key on but not the other things and wiggle wires near the fuse and if that alone blow the fuse it should be the problem area.

I tend to think a wire is grounding out and first look already said and anything recently done in the area or disturbed for any reason for some other issue is suspect.

Maybe one of the guys has a color wiring diagram to follow and can post it maybe not. You can get that info by buying it from for the specific vehicle. I understand one year is about $27.50US and they would refund your money if not satisfied - check if you need to go there.

I simply can't tell you the next item in line to check more than literally following the wire from the fuse (back of box may show color exactly) and go looking.

Said before, many owner's manuals will say what item is where for fuses and such either an acronym or a # location. Worth looking and if you don't have that get one!


  Email This Post

Feed Button

Search for (options) Privacy Sitemap