What should I test for a relay problem?
What should I test for a relay problem? These accessories can range from the main computer PCM (powertrian control module), radiator fan, fuel pump, door locks etc. There are two tests that should be considered when dealing with a relay problem, is the problem with the relay itself or is the problem a power or ground issue. What does it mean when your engine cranks but fails to start? When your engine cranks but, fails to start. It usually means your engine is having trouble producing a spark, getting fuel, or creating compression. But, what if, ignition, fuel, and compression...