A vehicle with a no-start concern has been checked with a spark checker and has no spark to the plugs. Technician A says to test for battery voltage at the ignition coil by connecting the red lead of a DMM (Digital Multimeter) to the coil negative terminal and black lead to a good ground. Technician B says with the DMM red lead on the coil negative terminal and the black lead grounded, the voltage should fluctuate while cranking the engine. Who is right?

The ASE L1 Practice Exam covering the following topics: General Powertrain Diagnosis, Computerized Powertrain Control Diagnosis, gnition Systems Diagnosis, Fuel and Air Inductor Systems Diagnosis, Emission Control Systems Diagnosis and I/M Fa.