Last post on Aug 03, 2013 at 3:10 PM
You are in the Toyota Camry
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Toyota Camry, Electrical, Sedan
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#411 of 1159 Re: Fuse for A/C, Seat Belts, Gas Gauge
Jul 01, 2008 (9:30 am)
I have a 1991 Toyota Camry.
I have replaced two fuses, 7.5 and 15 that operate the A/C, gauges for gas, etc...
I start the engine after I replace the fuses and they seem to work. On a second restart of my car, the fuses get blown again. I have tried this two times now in replacing the fuses and them being blown out.
Does anyone happen to know why this could be happening and a potential solution tht doesn't require alot of $?
#412 of 1159 Re: Rear Light Failure Warning Light [throttle2000]
Jul 01, 2008 (9:49 am)
Personally speaking, I can't see how these two situations could at all be related. The light sensing circuit is a little standalone circuit, simply monitors the current draw of the tail lights, and turns on an indicator light if detects a problem.
In regards to the accident, I don't know what the ECM would have recorded or not, and whether it has been erased overwritten automatically by you then driving the vehicle. I'm sure others could give you better guidance, and I'd suggest posting in the Edmunds forum on Accidents and Insurance. I'd be inclined to think that I'd write a letter to Toyota asking for a copy of all reports and findings that they made, but I don't know that they are bligated to do that or not. Might take a lawyers letter to get any action. I can't imagine what would have made a loud BANG as you mention, but would think that if there was a BANG...they would have found something broken.
#413 of 1159 Re: Fuse for A/C, Seat Belts, Gas Gauge [monmye]
Jul 01, 2008 (10:03 am)
Exactly which two fuses are blowing. There is writing on the fuse block, which will tell you what the name of the fuse is. If you can't read it, tell me something like "2nd row down, third fuse over"
I assume the 7.5 Amp is the one called 7.5A Gauge. What is the 15 Amp?
#414 of 1159 Re: Fuse for A/C, Seat Belts, Gas Gauge [kiawah]
Jul 02, 2008 (11:34 am)
I don't have a fuse "map" that specifies the placement of the fuses and the for what of the fuse...it seems to be missing.
The two I replaced are in the top row, looking straight at fuse box right to left:
1st place, rootbeer color fuse 7.5
5th place, lightblue color fuse 15 (the light blue fuse is in the last place of the top row, I think that's correct.
#415 of 1159 Break out the checkbook, Monica
Jul 02, 2008 (1:21 pm)
The 7.5 is the gauge fuse, the 15amp is your tail fuse.
This won't be simple to isolate and fix, you'll probably need a very good garage to troubleshoot this one.
The 7.5 gauge fuse feeds a lot of things, including things like:
light failure sensor, rear lights warning light
power main relay,
seat belt/should belt stuff
automatic transmission and overdrive indicators,
the engine ECU 'computer'
transmission lock solenoid and indicator
ABS warning light
rear window defogger and relay
antenna motor and control
combo meter (your dash)
heater/ac blower and control motors and circuits.
The 15A tail powers
the engine ECU
wiper switch cruise control, rear window defogger, cig lighter, and a whole bunch of switch lights (transmission lock light, ac switch light, defogger light, etc)
rear and front side marker lights, taillights, etc
light failure sensor
The symptom that both fuses blow at the same time, would lead one to suspect a failing component that are powered by both of those circuits:
- engine ECU (computer)
- combination meter (your dashboard)
- light failure sensor
- possibly a very bad switch, where the light circuit of the switch is shorting to the switched load portion of the switch
Since it could be a number of things, you should try to look and/or sense additional symptoms (clues). When the fuses aren't blown and the engine is running, does the engine run all right, or would you suspect that it could be the ECU. If the engine runs all right, is it shifting correctly? Other than when you turn the engine off, do the fuses ever blow at some other time? If everything is turned off before the engine (radio, ac, lights, etc), do the fuses still blow?
I suspect you might have a bad computer, but would want to exhaust all other possible options before replacing that ($$$).
Good luck !!
#416 of 1159 Re: Break out the checkbook, Monica [kiawah]
Jul 03, 2008 (5:05 am)
Couple additional thoughts/questions on this.
Is there anything about this car, that you didn't disclose or think was related to your problem? Things that might add a clue.........
- car was recently in an accident,
- you recently had someone do some work on it, fixing and repairing ......
- someone was working on the dashboard, messing around with the wiring and adding a new radio.
- car was in a flood, or you hosed off the engine trying to clean it
- lightning hit a tree right near the vehicle.
#417 of 1159 Re: Break out the checkbook, Monica [kiawah]
Jul 03, 2008 (10:19 am)
Yikes! More money to maintain my car. I'm still hoping for an easier/cheaper solution...
Thank you for the information...sometimes the car does seem to have some problems in shifting. And feels a little jerky at times. I thought it might need a tune-up/new spark plug.
I'll look into talking to a mecahnic and see what the potential damage could run.
#418 of 1159 Re: Break out the checkbook, Monica [kiawah]
Jul 03, 2008 (10:26 am)
the fuses went out intially a few weeks ago. I had someone replalce the fuses for me. A few days ago, the fuses went out again. Oddly enough, the fuses seemed to go out right after I jumped another car using my battery. This could have been the issue according to someone at Kragen's (?).
Most of the other questions you asked didn't apply with the exception of the lightening. We recently had a lightening storm here, but the fuses didn't go out until some time aferwards. I think I'll blame it on the person that I helped jump start her battery.
#419 of 1159 Re: 99 Toyota Camry Rear Backup lights not working [kiawah]
Jul 03, 2008 (3:59 pm)
I have a similar problem with my rear lights and tag light that are set in the trunk hood. I have checked the bulbs and replaced them and they did not need it. I have checked the fuses, they are fine, yet my lights still do not work. I figure it must be some type of wiring problem that I do not have the money to fix. Hope I don't get a ticket.
#420 of 1159 Re: Break out the checkbook, Monica [monmye]
Jul 03, 2008 (4:01 pm)
That jumping is probably what caused your problem.
Do this then....take your vehicle to an autoparts chain (autozone, pepboys, etc), and have them do a battery and alternator check under 'load'. This is a free test. They'll check that the battery is able to delivery a certain amount of current, and that there are no bad cells and it can hold the required voltage.
The alternator load test will test to make sure it is delivering enough current and voltage to recharge the battery.
Make sure these aren't contributing to the symptoms.