Voltage drop is one of the most common electrical problems showing up in automotive shops today. This article features the symptoms of voltage drop, basic procedures and grounding tests to keep you safe.
I have used my Fluke 189 meter to test for bad grounds on light, medium and heavy-duty trucks. I have seen more electrical problems - i.e., ECU (Electronic Control Unit) communication & data link issues - stem from bad grounds than any other failure, close to 75%.
Hybrid vehicle technology may be in its infancy, but the field is growing rapidly. Every major auto and truck manufacturer is developing hybrids, and hybrid technology is a stepping-stone to advanced electric-drive components that will be used in both hydrogen fuel cell vehicles and pure electric vehicles.