Engine Controls - System/Component Tests - 1.0L: Introduction
Before testing separate components or systems, perform procedures in BASIC TESTING - 1.0L article. Since many computer-controlled and monitored components will set a diagnostic trouble code if they malfunction, it is also recommended that self-diagnostics be performed. See TESTS W/CODES - 1.0L article.
NOTE:
Testing individual components does not isolate shorts or opens. Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.