Diagnostic Starting Point - Automatic Transmission

Diagnostic Starting Point - Automatic Transmission

Begin the system diagnosis with Diagnostic System Check - Vehicle. The Diagnostic System Check provides the following information: Initial Inspection and Diagnostic Overview

* The identification of the control module which commands the system
* The ability of the control module to communicate through the serial data circuit
* The identification and status of stored diagnostic trouble codes (DTCs)

The use of Diagnostic System Check - Vehicle, identifies the correct procedure for diagnosing the system and where the procedure is located. Initial Inspection and Diagnostic Overview

Symptoms

When it has been determined through Diagnostic System Check - Vehicle, that no DTCs are present. If it is determined that a malfunction exists, identify the concern by referring to the Symptoms - Automatic Transmission table. The Symptoms - Automatic Transmission table provides common diagnostic categories which relate directly to diagnostic information or procedures. - Symptoms - Automatic Transmission