For 1990-2009 cars

The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The list is in the order the list appears on the scan tool.

SDM Configuration: The scan tool displays whether the SDM is configured for only frontal airbags or frontal and side airbags.
Ignition: The scan tool displays the battery voltage. The ignition represents the system voltage that is measured by the SDM between terminal 5 and terminal 7.
Ignition Status: The scan tool displays the status of the battery voltage to ensure that it is within the normal operating voltage range.
Driver Air Bag Res.: The scan tool displays 0-6.6 ohms. The SDM performs the resistance measurement test once each ignition cycle and verifies the Ignition 1 and the 23 VLR voltages are within the normal ranges. Then the SDM sources a constant current to the driver deployment loop. The SDM then measures the voltage drop across the deployment loop and converts the measured voltage value to a driver deployment loop resistance value.
Passenger Air Bag Res.: The scan tool displays 0-6.6 ohms. The SDM performs the resistance measurement test once each ignition cycle and verifies the Ignition 1 and 23 VLR voltages are within the normal ranges. Then the SDM sources a constant current to the passenger deployment loop. The SDM then measures the voltage drop across the deployment loop and converts the measured voltage value to a passenger deployment loop resistance value.
LH Pretens. Resist.: The scan tool displays 0-6.6 ohms. The SDM performs the resistance measurement test once each ignition cycle and verifies the Ignition 1 and 23 VLR voltages are within the normal ranges. Then the SDM sources a constant current to the driver seat belt pretensioner deployment loop. The SDM then measures the voltage drop across the deployment loop and converts the measured voltage value to a driver seat belt pretensioner deployment loop resistance value.
RH Pretens. Resist.: The scan tool displays 0-6.6 ohms. The SDM performs the resistance measurement test once each ignition cycle and verifies the Ignition 1 and 23 VLR voltages are within the normal ranges. Then the SDM sources a constant current to the passenger seat belt pretensioner deployment loop. The SDM then measures the voltage drop across the deployment loop and converts the measured voltage value to a passenger seat belt pretensioner deployment loop resistance value.
LH Side Air Bag Resist.: The scan tool displays 0-6.6 ohms. The SDM performs the resistance measurement test once each ignition cycle and verifies the Ignition 1 and 23 VLR voltages are within the normal ranges. Then the SDM sources a constant current to the LH side air bag deployment loop. The SDM then measures the voltage drop across the deployment loop and converts the measured voltage value to a LH side air bag deployment loop resistance value.
RH Side Air Bag Resist.: The scan tool displays 0-6.6 ohms. The SDM performs the resistance measurement test once each ignition cycle and verifies the Ignition 1 and 23 VLR voltages are within the normal ranges. Then the SDM sources a constant current to the RH side air bag deployment loop. The SDM then measures the voltage drop across the deployment loop and converts the measured voltage value to a RH side air bag deployment loop resistance value.
Warning Lamp: The scan tool displays the status of the air bag warning lamp.
LH SIS Message Status (Side Impact Sensor): The scan tool displays the message status (OK/NOK) of the LH SIS.
LH SIS Init. Status (Side Impact Sensor): The scan tool displays the initialization status (OK/NOK) of the LH SIS.
LH SIS Comm. Error (Side Impact Sensor): The scan tool displays whether or not there is a communication error (Error/No Error) between the LH SIS and the SDM.
RH SIS Message Status (Side Impact Sensor): The scan tool displays the message status (OK/NOK) of the RH SIS.
RH SIS Init. Status (Side Impact Sensor): The scan tool displays the initialization status (OK/NOK) of the RH SIS.
RH SIS Comm. Error (Side Impact Sensor): The scan tool displays whether or not there is a communication error (Error/No Error) between the RH SIS and the SDM.
Reset LH Side Air Bag After Deployment: The scan tool displays whether or not the SDM has been reset (Active/Inactive) after the LH side air bag has deployed.
Reset RH Side Air Bag After Deployment: The scan tool displays whether or not the SDM has been reset (Active/Inactive) after the RH side air bag has deployed.
Reset Pretensioner After Deployment: The scan tool displays whether or not the SDM has been reset (Active/Inactive) after the seat belt pretensioners have deployed.