The SIR scan tool data definitions and passenger presence system scan tool data definitions lists 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.

SIR

Battery Voltage Signal: The scan tool displays 0-20 volts. This is the system voltage measured by the SDM between the battery input and ground.

Driver Seat Belt Switch : The scan tool displays whether the driver seat belt is buckled or unbuckled.

Driver Seat Belt Type: The scan tool displays whether the driver seat uses a switch or a sensor for the seat belt buckle.

Driver Seat Position Sensor: If the vehicle is equipped with a driver seat position sensor. The scan tool displays whether the driver seat is in the Forward or Rearward position to determine if the airbag should activate single or dual stage deployment as necessary.

Passenger Seat Belt Switch : The scan tool displays whether the passenger seat belt is buckled or unbuckled.

Primary Key Status : The scan tool displays the status of the primary key based on the comparison between the BCM and the SDM. If the Status is other than Valid the SDM will not allow activation and should set a DTC.

Psgr. Seat Belt Sensor: The scan tool displays whether the passenger seat belt is buckled or unbuckled.

Psgr. Seat Belt Type: The scan tool displays whether the passenger seat uses a switch or a sensor for the seat belt buckle.

Psgr. Seat Position Sensor: If the vehicle is equipped with a passenger seat position sensor.The scan tool displays whether the passenger seat is in the Forward or Rearward position to determine if the airbag should activate single or dual stage deployment as necessary.

Received Primary Key : The scan tool displays what the SDM received from the BCM as the primary key. The SDM then compares it to what it has stored to determine the Primary Key Status. The SDM Primary Key and Received Primary Key should match.

Received VIN Digits 2-5 : The scan tool displays the Secondary Key which includes digits 2 though 5 of the VIN that the BCM sends to the SDM.

Received VIN Digits 6-7 : The scan tool displays the Secondary Key which includes digits 6 and 7 of the VIN that the BCM sends to the SDM.

Run/Crank : The scan tool displays the current power mode of the SDM.

SDM Primary Key : The scan tool displays primary key that the SDM has stored to memory.

Secondary Key Status : The scan tool displays whether the Secondary Key is valid or invalid. This determines if the VIN stored in SDM memory matches what is stored in the BCM.

SIR Warning Indicator: The scan tool displays whether the SIR warning indicator has been requested ON or OFF.

Passenger Presence System

Battery Voltage Signal: The scan tool displays 0-20 volts. This is the system voltage measured by the PPS module between the battery input and ground.

Power Mode : The scan tool displays the current power mode.

PPS Fault Status: The scan tool displays the current condition of the PPS system to determine if the SDM or PPS is causing the PPS Disabled condition.

SDM Enable Status: The scan tool displays the current status of the PPS system within the SDM. When disabled, SDM will default to deactivate the deployment loops related to the passenger airbags. PPS Fault Status and SDM Fault status should match.

PPS Enable Status: The scan tool displays the current status of the PPS system. This information is sent to the SDM for deactivation of the deployment loops related to the passenger airbags. PPS Enable Status and SDM Enable status should match.

Passenger Classification: The scan tool displays the calculated seat occupant status or need to re-zero.

Passenger Status: The scan tool displays the calculated seat occupant status including relationship to seat position.

Pressure Sensor: The scan tool displays the voltage determined by the weight/position of the seat occupant.

Seat Belt Tension Sensor: The scan tool displays voltage which is used to determine whether a child infant seat is mounted in the passenger seat or not.

Primary Key Status: The scan tool displays the status of the primary key based on the comparison between the SDM and the PPS. If the Status is other than Valid the PPS will not allow activation and should set a DTC.

PPS Primary Key: The scan tool displays primary key that the PPS has stored to memory.

Received Primary Key : The scan tool displays what the PPS received from the BCM as the primary key. The PPS then compares it to what it has stored to determine the Primary Key Status. The PPS Primary Key and Received Primary Key should match.