Power Circuits
WARNING: This page is about a different car, the 1991 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
Using a voltmeter, check for battery voltage between ECA terminal No. 1 (KAPWR) and ground. Check for battery voltage at terminals No. 37 and 57 (VPWR). If battery voltage is not present, power is not being supplied from EEC power relay. See CIRCUIT TEST B in the appropriate TESTS W/CODES article.