All no contacts should read 0 ohms to the corresponding pole. How to check a fuse by testing it with a multimeter presented by katie nyberg for galco tv.
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How to check relay fuses. In a car this is likely a relay or fuse box. The relay should not be tested while it is connected to the circuit. Use your fingers to unplug the relay from the socket in which it is placed. To check the relay whether its good or faulty one we need to check the resistance of a coilin the relay there is a coil and that coil has some resistance using that resistance knowledge we can find that the relay is a good one or not. This is the easiest way to do it out of the car and the only way it should be done. Testing the fuse 1.
Make sure the device equipment or vehicle is turned off before the fuse. The relay is typically located in a place where larger electric parts are placed. Buy the items featured in this video at 800 337 1720 or visit. Turn the equipment off and remove the fuse. Use a digital multimeter dmm to test the resistance between each pole of the relay and the corresponding nc and no contacts for that pole. All nc contacts should read infinite resistance to the corresponding pole.
Check the relays coil terminals using a multimeter. Relay identification step 4 once the relay has been identified gently grasp or touch the relay in question have a helper turn the ignition key to the on position then crank the engine over the relay should click in one of the ignition switch positions. Turn the meter on and set it to measure continuity. This video shows you how an automotive relay works and how you can test it using an digital multimeter. Put one lead on each end of the. Check the energized condition of the relay contacts.
Turn the dial on the multimeter so it points to the continuity.
Gallery of How To Check Relay Fuses
