Diagnostic Starting Point - SIR for Saturn RELAY Ext. 2005
Begin the system diagnosis with the
Diagnostic System Check - Vehicle
. The Diagnostic System Check will provide the following information:
| • | 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 of any stored diagnostic trouble codes (DTCs) and their status |
The use of
Diagnostic System Check - Vehicle
, will identify the correct procedure for diagnosing the system and where the procedure is located.