how to test a relay with a power probe

RELAY TESTING STEPS: PINS: Control Circuit (shows resistance 50 to 120 ohms) 86 Power In (example: from Ignition Key) 85 Ground, Switch Circuit that controls Accessory Item (ie STARTER MOTOR) DIY auto repair to help you save money. The Power Probe … The Power Probe IV is the same size as the Power Probe 3 but includes multi-meter functions, advanced diagnostic test modes, an easy to read color LCD display and a rugged water and dust resistant housing.. Use the Power Probe IV on 12 t0 24 VDC electrical systems: • Activate Components With Positive & Negative Source Voltage To check both operations, remove the relay by pulling it out of its socket. 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If … The Power Probe is powered via the battery (or a 12 volt source) and tells you instantly whether the wire or circuit is live and which side of the circuit you are … Step 4 Instantly check components for continuity as well as identify positive, negative and open circuits without re-polarizing hook-up clips. A car's fuel pump relay turns on the fuel pump when the motor runs. Use a digital multimeter (DMM) or analog ohmmeter to measure the resistance across the load connections of the relay.Apply power from a test power supply to the control circuit. Automotive fixes to the most common car and truck problems. 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Computer safe test light: Test polarity instantly with the RED/GREEN LED without re-polarizing hook-up leads like with a standard test light Jumper lead set protected by a circuit breaker: The Power Probe supplies power or ground to the tip of the probe allowing a technician to activate and test electrical components without jumper leads I will show you how to test a 3 4 and 5 pin relay. Procedure: Take a multimeter and put it on the ohmmeter settings. And one of the best ways to do this is to use a multimeter with an ohmmeter setting and then measuring the resistance values. At first glance, the Power Probelooks pretty simple, and it is, but what it does is remove a lot of the roadblocks that come up when chasing down wiring problems. BELOW 50 or ABOVE 120 ohms = Relays is BAD. Relay testing hack you can do in your car. How to test any car relay. Press the rocker switch forward and you'll have a hot lead for powering up electrical components like cooling fans, relays, press the switch rearward and you will have an instant ground lead. 87 Power Out, RELAY TEST 1 Set meter to 200 ohms, Test for resistance between 85 and 86 (Circuit with COIL) Acceptable range 50 to 120 Ohms, example 70 ohms is GOOD BELOW 50 or ABOVE 120 ohms = Relays is BAD, RELAY TEST 2 Listen for a click Supply 12 volts Power to 86 Ground to pin 85 You will hear 87 to 87a closing CLICK, RELAY TEST 3 Supply power to 86 and Gnd to 85, this circuit ENERGIZED now check for resistance between pins 30 and 87 Set meter to 2000 OHMS Look for LITTLE or 0 resistance. Once the relay has been identified, gently grasp or touch the relay in question, have a helper turn the … This video goes over how to test a cars relay. A multi-meter will tell you if the wire has voltage, but you have to switch leads to determine if it is positive or negative. Look for shorts without wasting fuses. Directed LED Head Lamps to Illuminate Test Area When you connect the Power Probe to the car's battery you have a multitude of testers at your finger tips. Relay testing hack you can do in your car. Subscribe to my youtube channel here: https://goo.gl/j1pCfn For the most common automotive fixes to the most common car and truck problems. However, some fuel pump relays come in different shapes and sizes, so it’s best to locate your manufacturer’s diagram if you’re having trouble findi… You can test the compressor relay with a fused jumper wire. I will show you how to test a 3 4 and 5 pin relay. Connect the negative lead of the power probe to the battery’s negative terminal. Hold either of the probes against one of the prongs labeled with 30 or 87. The manufacturer's part number … The first terminal “1” of Relay... Now, Switch ON and OFF the “ON/OFF Switch”. anyways i have been looking at some testers and have narrowed them down to these please let me know witch on RELAY TESTING STEPS: PINS: Control Circuit (shows resistance 50 to 120 ohms) 86 Power In (example: from Ignition Key) 85 Ground, Switch Circuit that controls Accessory Item (ie STARTER MOTOR) Connect the alligator clip from a test light to any good ground on your vehicle. When a relay is defective, it is usually because of a bad coil or bad connection. RELAY TEST 3 Supply power to 86 and Gnd to 85, this circuit ENERGIZED now check for resistance between pins 30 and 87 Set meter to 2000 OHMS Look for LITTLE or 0 resistance RELAY TEST 2 Listen for a click Supply 12 volts Power to 86 Ground to pin 85 You will hear 87 to 87a closing CLICK. Instantly check components for continuity as well as identify positive, negative and open circuits without re-polarizing hook-up clips. 30 Power In HOT DIY auto repair to help you save money. Use a circuit tester to check whether current is reaching the relay. Use the probe tip and ground lead simultaneously to power up components right in your hand. To check the relay coil's 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 relay's coil. First, make sure that you have enough light and room to work. In this post, I am going to teach you how to test a relay with a multimeter . Connect the negative auxiliary clip to the negative terminal or ground side of the component being tested. Probe the wire coming out of the relay and going to the component with the tip of the test light. Hold the multimeter probes against the other 2 prongs on the relay. The 20ft lead will allow you to test bumper to bumper without jumper leads. HOW TO TEST RELAY ANY RELAY Voltmeter: https://amzn.to/2KplXWfTesting a relay is not as complicated as people think. power probe would still show the circuit has continuity, but it would be unable to carry enough current to ... terminal or good known power source. RELAY TEST 2 Listen for a click Supply 12 volts Power to 86 Ground to pin 85 You will hear 87 to 87a closing CLICK. Also, like all Power Probe circuit-testers, it supplies Power and Ground for functional component testing on or off the vehicle. The Power Probe Can Save You Hours Test isolated components instantly by hooking up the Power Probe to the car battery. 87 Power Out, RELAY TEST 1 Set meter to 200 ohms, Test for resistance between 85 and 86 (Circuit with COIL) Acceptable range 50 to 120 Ohms, example 70 ohms is GOOD BELOW 50 or ABOVE 120 ohms = Relays is BAD, RELAY TEST 2 Listen for a click Supply 12 volts Power to 86 Ground to pin 85 You will hear 87 to 87a closing CLICK, RELAY TEST 3 Supply power to 86 and Gnd to 85, this circuit ENERGIZED now check for resistance between pins 30 and 87 Set meter to 2000 OHMS Look for LITTLE or 0 resistance. As a final test, measure the resistance of the relay coil using a multimeter and check whether it is matching to the value stated by the manufacturer. How to test the output Control Module Driver using the Power Probe IV. I will show you many different ways to test a car relay with a battery, jumper wires, and a power probe. 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