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Test B: Electronic Automatic Temperature Control (EATC) Fault On Circuit 914/915

WARNING: This page is about a different car, the 1997 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
  1. If DTC 0002 is retrieved for circuit 914 (Tan/Orange wire), go to next step. If DTC 0002 is not retrieved for circuit 914 (Tan/Orange wire),go to step 5).
  2. Disconnect EATC 13-pin connector C281. Inspect connector and terminal No. 14 (Tan/Orange wire) for damage or corrosion. If connector and terminal No. 14 are okay, go to next step. If connector and terminal No. 14 are damaged, repair as necessary. Reconnect connectors. Repeat DATA LINK DIAGNOSTICS  under COMMUNICATION NETWORK DIAGNOSTICS.
  3. Inspect EATC module terminal No. 14. If terminal No. 14 is okay, go to next step. If terminal No. 14 is damaged, repair as necessary. If terminal No. 14 cannot be repaired, replace EATC module. Reconnect connectors. Repeat DATA LINK DIAGNOSTICS  under COMMUNICATION NETWORK DIAGNOSTICS.
  4. Measure resistance between Data Link Connector (DLC) terminal No. 2 and EATC 13-pin connector C281 terminal No. 14 (Tan/Orange wire). If resistance is less than 5 ohms, replace EATC module. If resistance is 5 ohms or more, repair circuit 914 (Tan/Orange wire) and circuit 915 (Pink/Light Blue wire) between DLC and EATC connector C281. Reconnect connectors. Repeat DATA LINK DIAGNOSTICS under COMMUNICATION NETWORK DIAGNOSTICS .
  5. Disconnect EATC 13-pin connector C281. Inspect connector and terminal No. 13 (Pink/Light Blue wire) for damage or corrosion. If connector and terminal No. 13 are okay, go to next step. If connector and terminal No. 13 are damaged, repair as necessary. Reconnect connectors. Repeat DATA LINK DIAGNOSTICS  under COMMUNICATION NETWORK DIAGNOSTICS.
  6. With EATC 13-pin connector C281 still disconnected, inspect EATC module terminal No. 13. If terminal No. 13 is okay, go to next step. If terminal No. 13 is damaged, repair as necessary. If terminal No. 13 cannot be repaired, replace EATC module. Reconnect connectors. Repeat DATA LINK DIAGNOSTICS  under COMMUNICATION NETWORK DIAGNOSTICS.
  7. Measure resistance between Data Link Connector (DLC) terminal No. 10 and EATC 13-pin connector C281 terminal No. 13 (Pink/Light Blue wire). If resistance is less than 5 ohms, replace EATC module. If resistance is 5 ohms or more, repair circuit 914 (Tan/Orange wire) and circuit 915 (Pink/Light Blue wire) between DLC and EATC connector C281. Reconnect connectors. Repeat DATA LINK DIAGNOSTICS under COMMUNICATION NETWORK DIAGNOSTICS .
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