Prepare for the Automotive Service Technician Period 1 exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which of the following is a documented function you can perform with a scan tool?

A scan tool is used to read diagnostic trouble codes stored in the vehicle’s ECU, along with related data like freeze-frame information. Accessing diagnostic codes is a documented function because it helps you identify what system flagged a fault and guides further diagnosis. Replacing the alternator, wheel alignment, and replacing the cooling fan are mechanical tasks that require physical parts and procedures, not a scan tool actions. So the best choice is accessing diagnostic codes.

A scan tool is used to read diagnostic trouble codes stored in the vehicle’s ECU, along with related data like freeze-frame information. Accessing diagnostic codes is a documented function because it helps you identify what system flagged a fault and guides further diagnosis. Replacing the alternator, wheel alignment, and replacing the cooling fan are mechanical tasks that require physical parts and procedures, not a scan tool actions. So the best choice is accessing diagnostic codes.