Diagnostic System Check - SIR: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Refer to SIR Special Tool Caution
in Cautions and Notices.
These diagnostic procedures will help you to find and repair SIR system malfunctions. This service category also contains information for repairing SIR system malfunctions. For best results, use the diagnostic tables, and follow the sequence listed below:
- Perform the Diagnostic System Check - SIR. All SIR diagnostics must begin with the Diagnostic System Check - SIR. The Diagnostic System Check - SIR determines the following results:
- Proper AIR BAG warning lamp operation
- Ability of the SDM to communicate through the data link connector (DLC)
- Existence of SIR current and/or history diagnostic trouble codes (DTC)
- Refer to the diagnostic table as directed by the Diagnostic System Check-SIR. The diagnostic tables will help enable you to diagnose any SIR system malfunction. Bypassing these procedures may result in the following problems:
- Extended diagnostic time
- Incorrect diagnosis
- Incorrect parts replacement
- Repeat the Diagnostic System Check-SIR after you perform any repairs or diagnostic procedures. This will verify that you correctly performed the repair. This will also ensure that no other malfunctions exist.