SAAB WIS ONLINE

DTC B1001

DTC B1001

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category


DTC Descriptor

DTC B1001 00

Option Configuration

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) stores a primary data key, which is a 4-digit number. 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. If there is a mismatch between the information stored in the SDM and BCM, DTC B1001 will set.

Conditions for Running the DTC

System voltage is between 9-16 V.

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.

Action Taken When the DTC Sets


• The SDM requests the instrument cluster 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 matches the last 4 digits 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


• Circuit Testing

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs

• Connector Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Note

Cycle the ignition after performing the Setup SDM Primary Key procedure in the BCM. This enables the BCM to read the new SDM primary Key value.


Verify the scan tool SDM Primary Key Status is Valid in the BCM.