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How Do You Test An Ecm Relay? [Solved]
Grab a multimeter and set it to Ohms. Touch the leads across the electromagnet coil pins and measure resistance. Anywhere from 50-120 ohms is OK. Out of range or open means a bad electromagnet coil winding and time for a new relay.
How To Diagnose A Faulty ECU With No Communication
No start of the vehicle and no direct communications to the engine management system –
Checking for Power and Ground at an ECM
Using Open Circuit Voltage
How to Test a Relay the Correct Way
Here is how you
