Engine Controls - System/Component Tests - EEC-IV (2.0L): Introduction
Before testing separate components or systems, perform procedures in the BASIC TESTING - 2.0L article. Since many computer-controlled and monitored components set a trouble code if they malfunction, also perform procedures in the appropriate TESTS W/CODES - EEC-IV (2.0L) article.
NOTE:
Testing individual components does not isolate short or open circuits. Perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate shorted or open wiring harness.
NOTE:
For wiring diagrams not shown in testing procedures, see appropriate wiring diagram in the WIRING DIAGRAMS article in the ENGINE PERFORMANCE section.
WIRING DIAGRAMS - 2.0L - Contour & Mystique
WIRING DIAGRAMS - 2.0L - Probe
NOTE:
In following tests, circuit diagrams and illustrations are courtesy of Ford Motor Co.