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Engine Controls - System/Component Tests - 2.0L Turbo: Introduction

Before testing separate components or systems, perform procedures in BASIC TESTING - 2.0L TURBO article. Since many computer controlled and monitored components set a Diagnostic Trouble Code (DTC) if they malfunction, also perform procedures in the TESTS W/CODES - 2.0L TURBO article.

NOTE: Testing of individual components does not isolate possible shorts or opens. Unless stated otherwise in testing procedures, perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with minimum 10-megohm input impedance. Use ohmmeter to isolate wiring harness shorts or opens.

Manufacturer recommends that all DTCs be retrieved and diagnostic command codes be entered with a scan tool, a proprietary device available from manufacturer.

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