Test E: Electronic Automatic Temperature Control (EATC) Module Does Not Respond To NGS Tester
WARNING: This page is about a different car, the 2001 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to OFF position. Disconnect Electronic Automatic Temperature Control (EATC) module White 13-pin harness connector C274 located in behind center of instrument panel. Inspect harness connector for loose, damaged or corroded terminals. Repair as necessary and retest system for normal operation. If harness connector is okay, reconnect harness connector. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn ignition switch to ON position. Perform data link diagnostic procedure. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM. If NGS tester indicates EATC: NO RESPONSE ON CKT 914 (BUS +), go to next step. If NGS tester indicates EATC: NO RESPONSE ON CKT 914 (BUS -), go to step 3 .
- Turn ignition switch to OFF position. Disconnect NGS tester. Disconnect EATC module harness connector C274. Measure resistance of Tan/Orange wire between terminal No. 15 at EATC module harness connector C274 and terminal No. 2 at DLC. See Figure and Fig 1 . If resistance is 5 ohms or less, replace EATC module. If resistance is greater than 5 ohms, repair open in Tan/Orange wire between EATC module and DLC.
- Turn ignition switch to OFF position. Disconnect NGS tester. Disconnect EATC module harness connector C274. Measure resistance of Pink/Light Blue wire between terminal No. 1 at EATC module harness connector C274 and terminal No. 10 at DLC. See Figure and Fig 1 . If resistance is 5 ohms or less, replace EATC module. If resistance is greater than 5 ohms, repair open in Pink/Light Blue wire between EATC module and DLC.