For 1990-2009 cars

The sensing and diagnostic module (SDM) scan tool data list contains all the restraint system related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order.

Use the SDM scan tool data list as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with the Diagnostic System Check - SIR. Use the SDM scan tool data list after the following is determined:

• | There is no published diagnostic trouble code (DTC) procedure or published symptom procedure for the customer concern.

• | The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The typical data values are obtained from a properly operating vehicle under the conditions specified in the second row of the scan tool data list table. Comparison of the parameter values from the suspect vehicle with the typical data values may reveal the source of the customer concern.

Parameter | Operating Conditions | Expected Value | Definition
--- | --- | --- | ---
Ignition is ON, engine OFF and vehicle is stationary
Backup System Power Mode | -- | Valid/Invalid |
Driver Air Bag Stage 1 Squib | -- | 2.6 - 3.3 Ohm |
Driver Air Bag Stage 2 Squib | -- | 2.6 - 3.3 Ohm |
Driver EFS Status | -- | Okay/Not Okay |
Driver Seat Position Sensor Status | -- | Okay/Not Okay |
Driver Pretensioner Circuit | -- | 2.6 - 3.3 Ohm |
Driver Seat Belt Status | -- | Buckled/Not Buckled | The scan tool displays whether the driver seat belt is buckled or unbuckled.
Passenger Air Bag Stage 1 Squib | -- | 1.9 - 2.6 Ohm |
Passenger Air Bag Stage 2 Squib | -- | 1.9 - 2.6 Ohm |
Passenger EFS Status | -- | Okay/Not Okay |
Passenger Pretensioner Circuit | -- | 1.9 - 2.6 Ohm |
Primary Key Status | -- | Valid | The scan tool displays if there is a passenger airbag suppression device used on this vehicle and if so, whether it is has an automatic key switch, a manual key switch or both.
Received Primary Key | -- | 4711 | The scan tool displays what the BCM is sending out as the primary key. The SDM then compares it to what it has stored. This should match the SDM Primary Key.
Run/Crank Signal | -- | Active | The scan tool displays what the current power mode of the SDM.
Secondary Key Status | -- | Valid | 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.
System Power Mode | -- | Run |
VIN Digit 2 - 5 | -- | Vehicle Dependant | The scan tool displays the Secondary Key which includes digits 2 though 5 of the VIN that the BCM sends to the SDM.
VIN Digit 6 - 8 | -- | Vehicle Dependant | The scan tool displays the Secondary Key which includes digits 6 through 8 of the VIN that the BCM sends to the SDM.
VIN Digit 9 - 12 | -- | Vehicle Dependant | The scan tool displays the Secondary Key which includes digits 9 through 12 of the VIN that the BCM sends to the SDM.
VIN Digit 13 - 15 | -- | Vehicle Dependant | The scan tool displays the Secondary Key which includes digits 13 through 15 of the VIN that the BCM sends to the SDM.
VIN Digit 16 - 17 | -- | Vehicle Dependant | The scan tool displays the Secondary Key which includes digits 16 and 17 of the VIN that the BCM sends to the SDM.
Warning Indicator | -- | On/Off | The scan tool displays whether the SIR warning indicator has been requested ON or OFF