In this post i am going to teach you how to test a relay with a multimeter. The reading should be open infinite ohms on an no relay and short 0 ohms on an nc relay.
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How to test a 4 pin relay with multimeter. How to test a 3 4 or 5 pin relay with or without a diagram duration. The voltage applied should be that of the. Unsubscribe from shaun mercado. Set the multimeter in continuity test mode. If the multimeter does not beep the coil is open damagedthe relay needs to be replaced. How to test relay any relay voltmeter.
You will find the resistance of the relay coil. Refer to the datasheet to get the coils resistance. If your meter does not have a continuity function or for some reason does not show any sign of continuity then use the second method. To check the coils resistance with a multimeter take a multimeter and put it on the ohmmeter setting then connect the multimeter probes on any two terminals of relays coil. It doesnt matter which probe is placed on which terminals. The lisle relay test jumper kit includes adapters for the most popular types of test leads included with most multimeters.
Use these tips to learn how to test a 4 terminal relay. Ratchets and wrenches. And one of the best ways to do this is to use a multimeter with an ohmmeter setting and then measuring the resistance values. Dmms and analog ohmmeters are available in electronic parts and hobby stores. The first step is to test the coil of relay. Contents 2 at orange.
Use the orange adapters with the blue and yellow. To check the relay coils resistance take the multimeter you have and place it in the ohmmeter ω setting and place the probe leads of the multimeter on the 2 terminals of the relays coil. Pin tip probe test leads. For example if the resistance is 320ω and the. Place the probes of the multimeter on the coil terminals. Use a digital multimeter dmm or analog ohmmeter to measure the resistance across the load connections of the relay.
Find and remove the relay. You will need a 12v power supply or car battery and multimeter voltmeter. Use this lisle test lead kit with lisle relay test jumper kits 56180 or 60610 to easily and securely connect relay test jumper to your multimeters test leads. If the multimeter beeps or show any sign of continuity the coil is electrically closed good. Httpsamznto2kplxwf testing a relay is not as complicated as people think. Banana plug test leads.
The procedure of checking the coils resistance of a relay with a multimeter. This is the easiest way to do it out of the car and the only way it should be done. Testing relays with multimeter shaun mercado. This video shows you how an automotive relay works and how you can test it using an digital multimeter. Apply power from a test power supply to the control circuit. Use the blue and yellow adapters.
Pin tip to banana plug male 69210 1 at blue. The purpose of testing a relay is to find whether it is good or bad. In the datasheet you will also get the tolerance value of the coil.
Gallery of How To Test A 4 Pin Relay With Multimeter
