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 parameters that are available on the scan tool are listed below in alphabetical order.

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.
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.
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.
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.
LH SIS Comm. Error: The scan tool displays whether or not there is a communication error (Error/No Error) between the LH side impact sensor (SIS) and the SDM.
LH SIS Init. Status: The scan tool displays the initialization status (OK/NOK) of the LH side impact sensor (SIS).
LH SIS Message Status: The scan tool displays the message status (OK/NOK) of the LH side impact sensor (SIS).
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.
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 Pretensioner After Deployment: The scan tool displays whether or not the SDM has been reset (Active/Inactive) after the seat belt pretensioners have 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.
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.
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.
RH SIS Comm. Error: The scan tool displays whether or not there is a communication error (Error/No Error) between the RH side impact sensor (SIS) and the SDM.
RH SIS Init. Status: The scan tool displays the initialization status (OK/NOK) of the RH side impact sensor (SIS).
RH SIS Message Status: The scan tool displays the message status (OK/NOK) of the RH side impact sensor (SIS).
SDM Configuration: The scan tool displays whether the SDM is configured for only frontal air bags or frontal and side air bags.
Warning Lamp: The scan tool displays the status of the air bag warning lamp.