Section 2 (A/C-Heater System - Automatic): Self-Diagnostics: Notes

WARNING: This page is about a different car, the 1999 Lincoln Navigator and 1999 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

EATC module self-diagnostic test will detect problems in system control functions. It will display hard DTCs and intermittent DTCs during system operation.

NOTE: If EATC module cannot be accessed by NGS tester, go to TEST A . Or, if EATC module self-diagnostic test will not detect concerns associated with DLC messages, an NGS tester will have to be used to retrieve these messages.