A relay usually gets damaged due to a number of reasons. De-energize (remove B+) the control circuit at pin 1; the test light at pin … How To Test A Relay Using Multimeter & Battery? This article will help you to bench test the Ford 20 amp multi-purpose Relay in a step by step fashion (there are two articles in site about bench testing a Ford Relay, the other is here: How To Bench Test A Ford Relay (Large Relay)). A relay is switch that utilizes an electrical trigger signal to activate. The purpose of testing a relay is to find, whether it is good or bad . How to Test a Four Terminal Relay. One thing commonly tested on heavy-duty trucks is the 5-pin relay. I will show you how to test a 3 4 and 5 pin relay. In this step we will identify common and Normally Closed (NC) pin of relay. That is: - Current = Voltage ÷ Resistance. And one of the best ways to do this is to use a multimeter with an ohmmeter setting and then measuring the resistance values. The upper right pin taps the upper center pin and steady the contact to the left upper pin as long as it has power source. Only one pair should give you a reading - it should be between 10 - 100 ohms. How to Test a Four Terminal Relay How to test a 6 pin relay. The test light will be on. One thing commonly tested on heavy-duty trucks is the 5-pin relay. The most effective way to bench test a solid state relay is to construct a simple test circuit consisting of a DC power supply or battery (a 9Vdc battery will work fine in most cases) and a 60W or 100W light bulb. What is a Relay How does a Relay works. A second, more exact method requires special instruments and a power source. Start by finding the two pins connected to the relay coil. Place the meter's test wires across the power and control terminals. How to test a 4-pin Relay (Electronic on/off Switch) also with connector & led light. Most people work those hours. when to change rear differential fluid? ; Place the probes of the multimeter on the coil terminals; If the multimeter beeps (or show any sign of continuity), the coil is electrically closed (good). In this article, we will show you “how to test a relay“. Keep the multimeter in the continuity check mode. 1 below shows the basic wiring diagram for testing a DC input solid state relay. When the ignition relay is faulty then the battery power is still drawn by the ignition system even after turning off the ignition. You will notice that even if the battery is new and working fine it is always drained of power especially in the mor… You can do this with your multimeter. With the coil still energized, jump battery positive to one switch terminal. 3:32. Polarity doesn't matter on this 4-pin relay, but it is vital on diode relays. PGM-FI Main Relay Pin Out. Fortunately, a car relay is easy to test. Use a multimeter to measure resistance across all the pairs of the connectors on the underside of the PTC relay. If the required operating voltage is supplied to the relay, the relay is activated. What did it cost and what results have you seen? Locate the relay that you want to test. In this post, I am going to teach you how to test a relay with a multimeter . Energize the relay (control side) by supplying B+ to pin 1 and a ground to pin 3. In this article, we will show what resistance readings you should get when you measure various points of a relay. . Why are most auto shops open Monday through Friday from 8-5? Please verify all wire colors and diagrams before applying any information. IMAGE: 1. If the bulb and the test light blink at regular intervals, the relay is functioning properly. How to Test a Refrigerator Relay Switch. ; If the multimeter does not beep, the coil is open & damaged.The relay needs to be replaced. Refer to your owner's manual for relay locations. How to Test a Four Terminal Relay How to test a 6 pin relay. In this post, I am going to teach you how to test a relay with a multimeter . And one of the best ways to do this is to use a multimeter with an ohmmeter setting and then measuring the resistance values. By far, the easiest way to test a suspect fuel pump relay — or some other automotive relay — is to swap the suspect relay … How to Test a Relay. 1 Is Getting 12 Volts. Generally, the terminal between coil terminal is refer as common pin so we just have to identify the NC pin. It is responsible for powering the start winding for a brief moment to help start up the fridge compressor motor. 2 12v 10/89. It's likely to be somewhere between about 50Ω and 1000Ω. I am looking for a six (6) pins relay. ? Once you locate the relay, you have three methods to test it. This video goes over how to test a cars relay. These relays (like the one in the photo in the image viewer) are used in the majority of Ford vehicles. Step 4 Wrap the long-stripped end of the second piece of wire around the base cylinder of the test bulb, securing it with a twist, and connect the short-stripped end to the "L" prong using the third clip. 1 Is Getting 12 Volts NOTE: If the engine in your Honda Civic (Civic Del Sol) starts, then you can conclude that the PGM-FI Main Relay is functioning correctly. eXam Aswers Search Engine . Many technicians are quick to replace this part without properly testing it first. The Fastest Way to Test a Fuel Pump Relay or Other Automotive Relays. Use a test lamp to check that power is reaching the flasher unit. 20 224 501 1 378 302. Emergency flashers are essential safety features in our cars or trucks. The tests in this tutorial assume that the engine is not starting. TEST 1: Making Sure That Terminal No. Keep the multimeter in continuity test mode and check the continuity between common pin and other then coil pin. Remove the relay and locate its control and power terminals. I realize that the relay I'm showing in this diagram may be an 8-pin, but I'm imagining it's a 6-pin with the same schematic as the relay image example here. The Fastest Way to Test a Fuel Pump Relay or Other Automotive Relays. The set of contacts that are open when the relay is not energized are called normally open (N/O) contacts and the set of contacts that are closed when the relay is not energized are called normally closed (N/C) contacts. they turn on the relay. I have a 6 pin relay that has the numbers 123456 on it. There's no magic to a relay. Connect 12 V supply to Control pins on the relay and listen for a physical click (Gross Test). Now start the second part of the test. If the bulb and the test light blink at regular intervals, the relay is functioning properly. To test the PTC relay in your refrigerator, unplug the fridge and remove the lower back panel so you can access the relay, which will look like a small black box with 2 or 3 wires running into it. 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