Technician A says that the best way to prevent ghost voltage is to always obtain open circuit voltage measurements by placing the DMM voltmeter in series with the circuit being tested. Technician B says that it is never necessary to use a DMM when troubleshooting an electrical problem on a truck with a body control module. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is incorrect because a voltmeter should be connected in parallel, not in series, to measure voltage. Technician B is incorrect because using a DMM is essential for diagnosing electrical problems, including those involving a body control module.

Technician a Says That the Best Way to Prevent Ghost