How to test a car fuse box for a current step 1. How to test fuses using a multi meter plug fuses.
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How to test fuse box. However it is common for there to be an additional interior fuse panel inside the cab of the vehicle. It is located under the hood in the engine bay typically somewhere easy to get to that is less likely to be damaged in a collision. A fuse box also known as a fuse panel organizes all of the cars fuses in one area for easy access. How to check a fuse by testing it with a multimeter presented by katie nyberg for galco tv. Your cars fuse box holds a variety of fuses with different ratings and most likely several relays. Now put the positive and negative leads together and look at the reading being shown.
Make sure the device equipment or vehicle is turned off before the fuse. How to check a fuse at the home fuse box things you will need. Those holes give you access to the blades inside the fuse. After you do this remove the fuse by gently pulling it out of its slot. Insert the pointed tip of the red test lead first in one hole and then in the other. Plug fuses are common fuses used in a homes fuse panel.
Turn the meter on and set it to measure continuity. Turn on your multi meter and set the selector to ohms which is the setting that measures resistance. Turn the dial on the multimeter so it points to the continuity. Fuses in homes typically are 15. Check the back side of the fuse for current ratings. This panel is commonly used for interior electronics.
Open the panel on the front of the fuse box by prying back its latch with your hand. Turn the equipment off and remove the fuse. Keep three replacement fuses on hand for each size fuse used in your fuse box. Turn the vehicles ignition to the power on position without starting the engine. Cartridge fuses come in a cylindrical shape and have contacts points at each end. Never replace a fuse with one of higher amperage or use a copper penny in place of a fuse to restore power.
Locate the small holes on each end of the blade type fuses. They come in 15 20 and 30 amp sizes and are. Buy the items featured in this video at 800 337 1720 or visit. Test the probes by snapping them one or two times against one another. Secure the 12 volt test lights alligator clip to any bare metal. Turn the car and the equipment that the fuse is a part of off.
If you read 12 volts to ground on one end but not the other the fuse is blown and needs to be replaced. Put one lead on each end of the. Testing the fuse 1. They have a fuse link.
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