Operation CHARM: Car repair manuals for everyone.

- When to Use This Section


Use this section only AFTER verifying:

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.

NOTE: This information usually leads to testing a system or component, like EGR, EST, or Idle Air Control.