Technician A says if the scan tool indicates that an actuator is being turned on and off, the actuator is working. Technician B says that DTCs can only be retrieved by a scan tool. 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

Technician A is incorrect because a scan tool indicating an actuator is being turned on and off only shows that the command is being sent, not that the actuator is physically functioning. Technician B is incorrect because DTCs (Diagnostic Trouble Codes) can also be retrieved through other methods such as blinking lights on the dashboard for some older vehicles, not just by a scan tool.

Technician a Says If the Scan Tool Indicates That an Actuator