Diagnostic Starting Point - SIR
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Begin the system diagnosis with Diagnostic System Check - SIR . The Diagnostic System Check - SIR will provide 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 of any stored diagnostic trouble codes (DTCs) and their status.
The use of Diagnostic System Check - SIR will identify the correct procedure for diagnosing the system and where the procedure is located.