MT1-1: Diagnostic Circuit Check
and System Performance Check

Learn how to identify the different operating systems and how to choose the correct diagnostic chart for each vehicle.

Learn the step necessary to retrieve Diagnostic Trouble Codes and how to verify system failures.

Avoid common mistakes while following diagnostic charts.

Perform step-by-step system performance checks to verify the system’s ability to adjust the air/fuel mixture.

Diagnose air management control system operation.