What kind of voltage drop does a 10A fuse show?
Different size fuses will show a different voltage drop, but all of the same rating will have roughly the same resistance, so it is easy to get a reference by testing one 10A fuse against the next. As an example, a 10A fuse with 1A flowing through it might show a voltage drop of 5mV.
How do you test the voltage of a fuse?
Place the positive and negative test probe on each side of a single fuse. Record the absolute voltage value. Ignore negative voltage readings or switch your test probe orientation if seeing the negative symbol distracts you. Record the amount of voltage drop present.
When do you pull the ECU-B fuse?
Apparently, the ECU-B fuse is what is pulled when Toyotas are sitting in storage for long periods (like, before they go to the lot, etc). I drove the van again, and then it sat in the driveway for about 24 hours. Then…
When to use voltage drop to test battery draw?
A component or components are drawing current from the battery when they should not be. This test will show you how to quickly pinpoint the source of the draw using voltage drop across fuses. This method is fast and efficient in comparison to monitoring current and removing fuses.
Do you have a 10 volt draw on Fuse witch?
An expert that got 10 achievements. An expert that got 5 achievements. An expert that has over 500 points. Re: I have a 10 volt draw on #15 fuse witch is 40 amp… Voltage is not the means to find the drain, even a minor switching circuit may show 12 volts.
How can I tell if my witch fuse is good?
The only thing g to test that way would be to disconnect items in the circuit ( a listing can usually be found in the owners manual or other tech publication ) until the reading drops. Check amperage across the fuse, make sure meter has a good fuse, not foil over a blown fuse.
Place the positive and negative test probe on each side of a single fuse. Record the absolute voltage value. Ignore negative voltage readings or switch your test probe orientation if seeing the negative symbol distracts you. Record the amount of voltage drop present.
Apparently, the ECU-B fuse is what is pulled when Toyotas are sitting in storage for long periods (like, before they go to the lot, etc). I drove the van again, and then it sat in the driveway for about 24 hours. Then…