B1001

CIRCUIT DESCRIPTION
When the ignition is turned ON, the Inflatable Restraint Sensing And Diagnostic Module (SDM) compares the restraints ID that is stored in the SDM to the restraints ID that is stored in the Body Control Module (BCM). The restraints ID that is being compared contains the last four digits of the SDM pan number. Also, the VIN that is stored in the SDM is compared to the VIN that is stored in the Powertrain Control Module (PCM). For more detailed information concerning the Class 2 data lines, refer to Data Link Communications Description and Operation in Data Link Communications.

CONDITIONS FOR RUNNING THE DTC
Ignition 1 voltage is within the normal operating voltage range.

CONDITIONS FOR SETTING THE DTC
The restraints ID that is stored in the SDM does not match the restraints ID that is stored in the BCM and/or the VIN that is stored in the SDM does not match the VIN that is stored in the PCM.

ACTION TAKEN WHEN THE DTC SETS
^ The SDM commands the AIR BAG warning lamp ON via Class 2 serial data.
^ The SDM disables all deployments.

CONDITIONS FOR CLEARING THE DTC
The restraints ID that is stored in the SDM matches the restraints ID that is stored in the BCM and/or the VIN that is stored in the SDM matches the VIN that is stored in the PCM.

DIAGNOSTIC AIDS
DTC B1001 is an indication that the restraints ID's stored in both the BCM and SDM and/or the VIN information stored in the PCM and the SDM do not match. If either the BCM and/or Powertrain Control Module (PCM) were replaced, the replacement modules need to be reprogrammed for proper operation.

TEST DESCRIPTION

Steps 1-6:

The numbers below refer to the step numbers on the diagnostic table.
2. This step checks to see if the correct VIN is programmed in the PCM.
4. This step checks to see if the BCM has been replaced.