How To Test Car Relay With Multimeter. The simplest way of finding this is to use a multimeter with an ohmmeter setting and then measuring the resistance values by checking its terminals. To start well test the coil of the relay.
Heres a step-by-step process of how to check a fuel pump relay using a multimeter. Then press the second probe against the last prong on the relay. The main reason for testing a relay is to find whether it is a good or defective one.
Bring your multimeter and put.
What You Will Need. It should not matter whether it is a starter relay starter relay or turn signal relay. Budget is always a major concern for professionals. With the relay removed from the fuse box the multimeter set to measure DC voltage and the switch in the cab activated first check to see if there are 12 volts at the 85 position in the fuse box where the relay plugs in or wherever the relay is located.
