Section 43 (Engine Controls - Tests W/O Codes): Introduction

WARNING: This page is about a different car, the 1996 Chrysler New Yorker and 1996 Chrysler LHS. However, it is still accessible from the selected car via links, so may be relevant.

Before diagnosing symptoms or intermittent faults, perform steps in the BASIC TESTING article and follow procedures 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 Powertrain Control Module (PCM). Check with manufacturer for latest PCM application.

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

Use intermittent test procedures to locate driveability problems that do not occur when the vehicle is being tested. These problems may cause a noticeable driveability problem or cause the Malfunction Indicator Light (MIL) to illuminate on some vehicles. These test procedures should also be used if a soft (intermittent) trouble code was present, but no problem was found during self-diagnostic testing.

NOTE: For specific testing procedures, see the TESTS W/CODES article. For specifications, see the ADJUSTMENTS article or the ENGINE CONTROL SYSTEM & ENGINE COMPONENT TESTS article.