Question

technician a says that the output drivers in the pcm typically send either simple on/off signals or pulse - width - modulated signals to the actuators, depending on the actuator being controlled. technician b says that in many cases, the software in the pcm’s memory can be updated by uploading software updates, called a reflash process. who is correct?
a. technician a
b. technician b
c. both technicians a and technician b
d. neither technician a nor technician b

Explanation:

PCM (Powertrain Control Module) output drivers send on/off or pulse-width-modulated signals to actuators based on the actuator's needs, so Technician A is correct. Additionally, PCM software can be updated via a reflash process where new software is uploaded to its memory, so Technician B is also correct.

Answer:

c. Both Technicians A and Technician B