DTC B1001 SDM
Diagnostic Instructions
DTC Descriptor
DTC B1001 00: SDM Option Configuration Error
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) stores a primary data key, which is a 4-digit number, and a secondary data key, which is a portion of the vehicle identification number (VIN). When the ignition is turned ON, the SDM compares
this information to the information stored in the body control module (BCM) over the serial data communication circuit.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
| • | The 4-digit primary data key stored in the SDM does not match the 4 digits stored in the BCM. |
| • | The VIN stored in the BCM does not match that of the vehicle. |
Action Taken When the DTC Sets
| • | The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. |
| • | The SDM disables all deployments. |
Conditions for Clearing the DTC
| • | The last 4-digit Primary Data Key in the SDM match the last 4 digits stored in the BCM. |
| • | The VIN that is stored in the SDM matches the VIN stored in the BCM. |
Diagnostic Aids
This DTC is an indication that an incorrect SDM is installed in the vehicle, or that the SDM and/or the BCM was replaced without reprogramming the BCM with the new information.
Reference Information
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
- Ignition ON, verify the scan tool Secondary Key Status displays Valid.
| ⇒ | If not the specified value, verify the scan tool Received VIN Digits 2-7 match the vehicle VIN. If the VIN does not match, reprogram the BCM. If the VIN matches, reprogram the SDM. |
- Ignition ON, verify the scan tool Primary Key Status displays Valid.
| ⇒ | If not the specified value, verify the scan tool SDM Primary Key matches the Received Primary Key. If the key does not match, perform the Setup SDM Primary Key in BCM procedure. |
- Verify that DTC B1001 is not set as current.
| ⇒ | If DTC is set as current, replace the SDM. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SDM and BCM replacement, setup, and programming
DTC B1001 ROS
Diagnostic Instructions
DTC Descriptor
DTC B1001 00: Option Configuration Error
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) stores a 4-digit primary key for the inflatable restraint vehicle rollover sensor (ROS). The SDM sends the ROS the primary key. If the ROS determines that it is the wrong primary key, the ROS
will set DTC B1001 and send the SDM a vehicle mismatch message. The SDM then will set DTC B0090 3A and illuminate the SIR Warning Indicator. The ROS does not use a secondary key.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
The 4-digit primary key stored in the SDM does not match the 4-digit key stored in the ROS.
Action Taken When the DTC Sets
| • | The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator. |
| • | The SDM disables all rollover related deployments. |
Conditions for Clearing the DTC
The 4-digit Primary Key in the SDM and in the ROS match.
Diagnostic Aids
This DTC is an indication that the ROS was not set-up correctly, is not the correct part number or that the ROS is defective.
Reference Information
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
- Verify the correct ROS part number has been installed
| ⇒ | If the wrong ROS part number was installed, replace with the correct ROS. |
- Verify that DTC B1001 is not set in the ROS.
| ⇒ | If DTC is set, perform the Setup New ROS procedure. If DTC resets replace the ROS. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
