Diagnostic Starting Point - Automatic Transmission

Diagnostic Starting Point - Automatic Transmission

Begin the system diagnosis with Diagnostic System Check - Engine Controls. The Powertrain OBD System Check provides the following information:
^ The identification of the control module(s) which commands the system.
^ The ability of the control module(s) to communicate through the serial data circuit.
^ The identification and status of stored diagnostic trouble codes (DTCs).

The use of Diagnostic System Check - Engine Controls identifies the correct procedure for diagnosing the system and the procedure location.