B1001

CIRCUIT DESCRIPTION

SIR Schematics:

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 Instrument Panel Cluster (IPC). The restraints ID that is being compared contains the last four digits of the SDM part number. Then, the SDM compares the VIN that is stored in the SDM to the VIN that is stored in the IPC. For more detailed information concerning the Class 2 data lines, refer to Data Link Communications Description and Operation in Data Link Connector.

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 IPC or the VIN information that is stored in the SDM does not match the VIN information that is stored in the IPC.

ACTION TAKEN WHEN THE DTC SETS
^ The SDM commands the AIR BAG indicator ON via Class 2 serial data.
^ The SDM disables all deployment loops.

CONDITIONS FOR CLEARING THE DTC
The restraints ID that is stored in the SDM matches the restraints ID that is stored in the IPC and the VIN information that is stored in the SDM matches the VIN information that is stored in the IPC.

DIAGNOSTIC AIDS
DTC B1 001 is an indication that the restraints IDs stored in both the IPC and SDM do not match or that the VINs stored in both the IPC and SDM do not match. If either the IPC and/or the Powertrain Control Module (PCM) were replaced, the replacement modules need to be reprogrammed for proper operation.

TEST DESCRIPTION

Steps 1-8:

The number(s) below refer to the step number(s) on the diagnostic table.
2. Tests to see if the correct VIN is programmed in the PCM
4. Tests to see if the IPC has been replaced
5. Tests to see if the correct VIN is programmed in the IPC