Empowering Car Owners A Step-by-Step Guide to Testing Car Relays

Relay Coil testing is done across terminals #85 and #86 or terminals #1 and #2 depending on the relay numbering. ... Service Tip: If the relay is ... The easiest way to test a relay is to simply swap it out with a known-good part. Relays are often cheap, but having one on hand isn't always going to happen. Testing the Relay with a Test Light. Connect the test light's clip to the positive terminal of the battery and probe the control terminals of the relay. Connect multimeter +ve to battery +ve, the relay should click and you should get a reading of around 125mA. If you have all of the above the ... You can test your vehicle's A/C compressor relay without a multimeter, if you feel comfortable. Replace the clutch relay (in the fuse and relay ... ... automotive relay works and how you can test it using an digital multimeter. This is the easiest way to do it out of the car and the only way ... 2) Start par Test the relay resistance to check the continuity of the control circuit. Set the multimeter to 2K ohm. The value obtained must be between 0 and a ... Remove the relay. Measure the resistance between pins 1 and 2. It should be more than 10 Ohms and less than 300. Measure the resistance between ... Use a multimeter to measure the resistance of the relay coil. Set the multimeter to the resistance range, and touch the test probes to the control pins of the ... Locate the suspect relay and listen for a “click” when the system is activated. For example, have a helper turn the AC system off and on inside ...