Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1997CONTOUR LX, 2.5 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 19 (MODULE COMMUNICATIONS NETWORK)TESTINGTEST H: NO RESPONSE FROM ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC) MODULE
1997 Ford Contour LX, 2.5 L, Standard
Test H: No Response From Electronic Automatic Temperature Control (EATC) Module
1997 Ford Contour LX, 2.5 L, StandardSECTION Test H: No Response From Electronic Automatic Temperature Control (EATC) Module
WARNING: This page is about a different car, the 1997 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure ignition switch is in OFF position. Disconnect Gray 13-pin connector C273 from rear of Electronic Automatic Temperature Control (EATC) module. The EATC module is located on A/C evaporator core housing at passenger's side of vehicle and contains a Gray 13-pin connector and a Black 13-pin connector. See Figure .
- Using ohmmeter, check resistance between terminal No. 15 (Tan/Orange wire) on connector C273 and terminal No. 2 (Tan/Orange wire) on Data Link Connector (DLC). See Fig 1 . Note resistance and go to next step.
- Using ohmmeter, check resistance between terminal No. 1 (Pink/Light Blue wire) on connector C273 and terminal No. 10 (Pink/Light Blue wire) on DLC. See Fig 1 . Note resistance and go to next step.
- If resistance is 5 ohms or less on both circuits, go to next step. If resistance is more than 5 ohms on any circuit, repair open circuit on Tan/Orange wire or Pink/Light Blue wire between connector C273 and DLC. Repeat TEST A .
- Inspect terminals No. 1 and 15 on connector C273 for damage. Also inspect corresponding pins on EATC module for damage. If terminals on connector C273 and pins on EATC module are okay, replace EATC module. Repeat TEST A . If terminals on connector C273 or pins on EATC module are damaged, repair as needed. Repeat TEST A .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.