Title: Interpret diagnostic trouble codes (DTCs) and scan tool data related to the emissions control systems; determine needed action.
Course: Automotive Technology III (20104-III) > Section: Engine Performance: Emissions Control Systems Diagnosis and Repair

Interpretation should include

- using a scan tool
- using diagnostic troubleshooting charts
- comparing test results to service materials and manufacturer guidelines.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
VIII. Engine Performance
E. Emissions Control Systems Diagnosis and Repair
Task 7

Process/Skill Questions:

- What is the function of a charcoal canister?
- What is the function of a purge solenoid?
- How can data be saved while driving?