Technician A says when servicing the BCM, a test light should be used to check for voltage. Technician B says before making or breaking electrical connections to the BCM, make sure the ignition switch is off. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question

Quizplus · Accepted Answer

Using a test light to check for voltage on a Body Control Module (BCM) can potentially damage the sensitive electronics within the module due to the current draw of the test light. Therefore, Technician A is incorrect. Technician B is correct because turning off the ignition switch before making or breaking electrical connections helps prevent electrical shorts and potential damage to the BCM or other electronic components.

Technician a Says When Servicing the BCM, a Test Light