Engine Controls - System/Component Tests - 2.2L: Introduction

NOTE: For testing and diagnosis of Variable Valve Timing (VTEC) system, see DTC 21 and DTC 22 charts under DIAGNOSTIC TROUBLE CODES in TESTS W/CODES - 2.2L article.

Before testing separate components or systems, perform procedures in BASIC TESTING - 2.2L article. Since many computer-controlled and monitored components set trouble codes if they malfunction, also perform procedures in TESTS W/CODES - 2.2L article.

NOTE: Perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Testing individual components does not isolate shorts or opens. Use ohmmeter to isolate wiring harness shorts or opens.