- When to Use This Section

Use this section ONLY after checking:

1. The on-car diagnostics are working.

2. No trouble codes are stored.

3. The Field Service Mode Check is normal.

4. A careful visual check was performed and no problems were found.

This information usually leads to testing a component system, like EGR, EST, or Idle Air Control. These are found in C-CHARTS COMPONENT TESTING.