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.

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 #8-11: The scan tool displays digits 8 through 11 of the SDM serial number.

Component Serial #12: The scan tool displays digit 12 of the SDM serial number.

Driver Seat Belt A/D: The scan tool displays 0 or 12 volts. If driver seat belt is buckled = 12 volts, unbuckled = 0 volts.

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

Driver Side Impact Sensor ID: The scan tool displays a 2 digit ID number. The ID signal is sent to the SDM from the Driver SIS.

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

Julian Date of Build: The scan tool displays a 3 digit number.

Passenger Side Impact Sensor ID: The scan tool displays a 2 digit ID number. The ID signal sent to the SDM from the Passenger SIS.

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

VIN Information: The scan tool displays a list. The PCM (Powertrain Control Module) is programmed in the assembly plant with the last four digits of SDM part number and the VIN of the vehicle.

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