This is the easiest way to do it out of the car and the only way it should be done. Check the relays coil terminals using a multimeter.
Circuit Wiring Diagram Must Know Fuse Box Bmw 528i 1982 Diagram
How to check relay fuses. Make sure the device equipment or vehicle is turned off before the fuse. Testing the fuse 1. 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. All nc contacts should read infinite resistance to the corresponding pole. Turn the meter on and set it to measure continuity. The relay is typically located in a place where larger electric parts are placed.
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. How to check a fuse by testing it with a multimeter presented by katie nyberg for galco tv. Check the energized condition of the relay contacts. Put one lead on each end of the. All no contacts should read 0 ohms to the corresponding pole.
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. Turn the dial on the multimeter so it points to the continuity. 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. Buy the items featured in this video at 800 337 1720 or visit. This video shows you how an automotive relay works and how you can test it using an digital multimeter. In a car this is likely a relay or fuse box.
Turn the equipment off and remove the fuse.
Gallery of How To Check Relay Fuses
