Diagnostic Starting Point - Automatic Transmission: Notes
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Begin the system diagnosis with DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS . The Powertrain OBD System Check provides the following information:
- The identification of the control modules which commands the system.
- The ability of the control modules 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 where the procedure is located.