I have a toyota corolla 2000. Fuse of my car blown up immediately within five minutes after replacing it with a new one. The fuse is of 15 ampere and its related to EFI or F-HTR. Please help me to troubleshoot the problem to the component level.Thanks,
TRY A 20 AMP FUSE IF IT BLOW YOU HAVE A DEAD SHORT
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You have a dead short and never put in a higher amp fuse. The one that's in there is to protect it to that amperage and a high amp fuse could harm the very thing it's protecting. Trace down your short and fix it.
You turned your big huge powerful sound system on and because you for some reason used that fused circuit as your power source? or you got real problems. Never put a higher amperage fuse in than whats recommended that's a way to do even more damage.
Yes upon looking at the wiring diagram this circuit feeds a lot of things some of these are: the PCM (powertrain control module), MAF (mass airflow sensor), fuel pump, O2 (oxygen sensors), and a couple of the EVAP control solenoids! To take the PCM out of the equation locate the EFI main relay and remove it from the relay box and then try the fuse again, with the relay removed and the fuse blows the PCM circuitry is shorted internally and will need to be replaced! if the fuse does not blow further testing is needed!
