The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.

8-Digit GM Part Number: The scan tool displays an 8-digit part number. This number is the GM part number that is stored within the SDM memory.

Active Switch: The scan tool displays enabled or disabled. The signal from the inflatable restraint I/P module disable switch indicates whether the passenger frontal air bag is enabled or disabled.

Calibration ID: The scan tool displays a 4-digit number. This calibration ID is the check sum of the SDM read only memory contents.

Component Serial Number: The scan tool displays the digits of the SDM serial number.

Front End Sensor #1 ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the left front end sensor.

Front End Sensor #2 ID: The scan tool displays a 2-digit ID number. The ID signal sent to the SDM from the right front end sensor.

Ignition Voltage: The scan tool displays 0-20 volts. Ignition represents the system voltage measured by the SDM at its ignition 1 voltage feed.

Julian Date of Build: The scan tool displays a 3-digit number. An example would be 723. 723 is July 23 which is day 204 based on the Julian Calendar.

Driver Seat Belt Status: The scan tool displays buckled or unbuckled. The signal from the driver seat belt switch indicates whether the driver seat belt is buckled or unbuckled.

ROM ID: The scan tool displays a 4-digit number. This number is the read-only memory (ROM) ID.

Year Module Built: The scan tool displays what year the module was built.