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Home >> Saturn >> 2004 >> ION L4-2.2L VIN F >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Initial Inspection and Diagnostic Overview >> Diagnostic Starting Point
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Starting Point

DIAGNOSTIC STARTING POINT

Begin the system diagnosis with Diagnostic System Check - Computers and Control Systems. The Diagnostic System Check - Computers and Control Systems will provide the following information:
- The identification of the control modules which command the system
- The ability of the control modules to communicate through the serial data circuit
- The identification of any stored diagnostic trouble codes (DTCs) and the codes status

The use of the Diagnostic System Check-Computers and Control Systems will identify the correct procedure for diagnosing the system and where the procedure is located.