The SIR Scan Tool Data Definitions contain a brief description of all SIR related parameters available on the scan tool. The following list is in the order that the list appears on the scan tool.

Ignition 1: The scan tool displays 0-25.5 volts. The ignition represents the system voltage measured by the SDM at the ignition feed.

Driver Senselo: The scan tool displays 0-20 volts. The SDM measures the voltage of the driver low terminal voltage and displays the voltage as Driver Senselo.

Passenger Senselo: The scan tool displays 0-20 volts. The SDM measures the voltage of the passenger low terminal voltage and displays the voltage as Passenger Senselo.

Dr. Bag Energy Reserve: The scan tool displays 0-30 volts. The SDM measures the voltage of the driver energy reserve capacitors inside the SDM and displays the voltage as Driver Energy Reserve.

Pass Bag Energy Reserve: The scan tool displays 0-30 volts. The SDM measures the voltage of the passenger energy reserve capacitors inside the SDM and displays the voltage as Passenger Energy Reserve.

Lamp Continuous on Time: The scan tool displays 0-182 hours. The SDM measures the continuous warning lamp ON time.

Ignition cycles lamp ON: The scan tool displays 0-125 cycles. The ignition cycles with the warning lamp ON.

Ign. cycles lamp Off: The scan tool displays 0--125 cycles. The ignition cycles with the warning lamp OFF.

Driver VDIF: The scan tool displays 0-500 millivolts. The SDM measures the difference between driver high and driver low in order to determine voltage differential.

Passenger VDIF: The scan tool displays 0-500 millivolts. The SDM measures the difference between passenger high and driver low terminals in order to determine voltage differential.

Seatbelt Status: The scan tool displays Buckled or Unbuckled. A serial data message received by the SDM from the body control module (SBM) representing seat belt status.