Engine Controls - Tests W/O Codes 1.6L: Introduction

NOTE: For specific testing procedures, see the SYSTEM/COMPONENT TESTS article. For adjustment procedures, see the ADJUSTMENTS article. For specifications, see the SPECIFICATIONS article.

Before diagnosing symptoms or intermittent faults, perform procedures in the BASIC TESTING article and in the TESTS W/CODES article.

Use this article to diagnose driveability problems existing when a hard fault code is not present.

NOTE: Some driveability problems may have been corrected by manufacturer with a revised computer calibration chip or computer control unit. Check with manufacturer for latest chip or computer application.

Symptom checks can direct the technician to malfunctioning components for further diagnosis. A symptom should lead to a specific component test, system test or adjustment.

Use intermittent test procedures to locate driveability problems that do not occur when the vehicle is being tested. These test procedures should also be used if a soft (intermittent) trouble code was present, but no problem was found during self-diagnostic testing.