Inflatable Restraint Sensing and Diagnostic Module Scan Tool Information
The inflatable restraint 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 nor 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.
Sensing and Diagnostic Module Scan Tool Data Parameters
| Parameter | Operating Conditions | Expected Value | Definition |
|---|---|---|---|
| Operating Conditions: Ignition is ON, engine OFF, and vehicle is stationary | |||
| Backup System Power Mode | Backup system power mode activated | Enable | This parameter displays the status of the Backup System Power Mode |
| Backup system power mode deactivated | Disable | ||
| Driver Air Bag Stage 1 Squib | - | 2.6-3.3 Ohms | The scan tool displays 2.6-3.3 Ohms. This is the resistance of the driver air bag stage 1 squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Driver Air Bag Stage 2 Squib | - | 2.6-3.3 Ohms | The scan tool displays 2.6-3.3 Ohms. This is the resistance of the driver air bag stage 2 squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Driver EFS Status | - | Okay | The scan tool displays Okay or Not Okay. This is the current status of the Driver EFS. |
| - | Not Okay | ||
| Driver Seat Position Sensor Status | - | Okay | The scan tool displays Okay or Not Okay. This is the current status of the Driver Seat Position Sensor. |
| - | Not Okay | ||
| Driver Curtain Air Bag Squib | - | 1.9-2.6 Ohms | The scan tool displays 1.9-2.6 Ohms. This is the resistance of the driver curtain air bag squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Driver Pretensioner Circuit | - | 2.6-3.3 Ohms | The scan tool displays 2.6-3.3 Ohms. This is the resistance of the driver pretensioner circuit as interpreted by the Sensing and Diagnostic Module. |
| Driver Seat Belt Status | Seat belt buckled | Buckled | The scan tool displays whether the driver seat belt is Buckled or Not Buckled. |
| Seat belt unbuckled | Not Buckled | ||
| Driver Side Air Bag Squib | - | 2.6-3.3 Ohms | The scan tool displays 2.6-3.3 Ohms. This is the resistance of the driver side air bag squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Driver SIS Status | - | Okay | The scan tool displays Okay or Not Okay. This is the current status of the Driver SIS. |
| - | Not Okay | ||
| Passenger Air Bag Stage 1 Squib | - | 1.9-2.6 Ohms | The scan tool displays 1.9-2.6 Ohms. This is the resistance of the passenger air bag stage 1 squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Passenger Air Bag Stage 2 Squib | - | 1.9-2.6 Ohms | The scan tool displays 1.9-2.6 Ohms. This is the resistance of the passenger air bag stage 2 squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Passenger Curtain Air Bag Squib | - | 2.6-3.3 Ohms | The scan tool displays 2.6-3.3 Ohms. This is the resistance of the passenger curtain air bag squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Passenger EFS Status | - | Okay | The scan tool displays Okay or Not Okay. This is the current status of the Passenger EFS. |
| - | Not Okay | ||
| Passenger Pretensioner Circuit | - | 1.9-2.6 Ohms | The scan tool displays 1.9-2.6 Ohms. This is the resistance of the passenger pretensioner circuit as interpreted by the Sensing and Diagnostic Module. |
| Passenger Side Air Bag Squib | - | 1.9-2.6 Ohms | The scan tool displays 1.9-2.6 Ohms. This is the resistance of the passenger side air bag squib circuit as interpreted by the Sensing and Diagnostic Module. |
| Passenger SIS Status | - | Okay | The scan tool displays Okay or Not Okay. This is the current status of the Passenger SIS. |
| - | Not Okay | ||
| 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, manual key switch or both. |
| - | Invalid | ||
| 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 | Ignition is in RUN/CRANK position | Active | The scan tool displays the current power mode of the SDM. |
| Ignition is in OFF/ACC position | Inactive | ||
| Seat Position Driver | Seat positioned toward the rear of the cabin | Rearward | The scan tool displays Rearward or Forward. This is the positional state of the drive seat. |
| Seat positioned close to the steering wheel | Forward | ||
| 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. |
| - | Invalid | ||
| System Power Mode | Ignition is in OFF position | Off | This scan tool displays the current position of the ignition cycle. |
| Ignition is in ACC position | Accessory | ||
| Ignition is in RUN position | Run | ||
| Ignition is in CRANK position | Crank | ||
| 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 | SRS warning indicator activated | On | The scan tool displays whether the SRS warning indicator has been requested ON or OFF |
| SRS warning indicator deactivated | Off | ||