• 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

The inflatable restraint sensing and diagnostic module stores a primary data key, which is a 4-digit number. When the ignition is turned ON, the inflatable restraint sensing and diagnostic module compares this information to the information stored in the body control module (BCM) via serial data. If there is a mismatch between the information stored in the inflatable restraint sensing and diagnostic module and body control module, DTC B1001 will set.

System voltage is between 9–16 V.

The 4-digit Primary Data Key stored in the inflatable restraint sensing and diagnostic module does not match the 4 digits stored in the body control module.

• The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.
• The inflatable restraint sensing and diagnostic module disables all deployments.

The last 4-digit Primary Data Key in the inflatable restraint sensing and diagnostic module matches the last 4 digits stored in the Body Control Module.

• This DTC is an indication that an incorrect inflatable restraint sensing and diagnostic module is installed in the vehicle, or that the inflatable restraint sensing and diagnostic module and/or the body control module was replaced without reprogramming the body control module with the new information.
• If the inflatable restraint sensing and diagnostic module was previously programmed and DTC B1001 is now set, the setup portion of program was not completed. Proceed to the inflatable restraint sensing and diagnostic module setup portion of the K36 Inflatable Restraint Sensing and Diagnostic Module: Programming and Setup

SIR Schematics

Master Electrical Component List

Supplemental Inflatable Restraint System Description and Operation

• Circuit Testing
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Connector Repairs

Control Module References for scan tool information

1. Verify the scan tool K36 Inflatable Restraint Sensing and Diagnostic Module Primary Key Status paramater is Valid.
• If the K36 Inflatable Restraint Sensing and Diagnostic Module Primary Key Status parameter is Invalid

  Perform the K36 Inflatable Restraint Sensing and Diagnostic Module setup. Refer to K36 Inflatable Restraint Sensing and Diagnostic Module: Programming and Setup.

• If the K36 Inflatable Restraint Sensing and Diagnostic Module Primary Key Status parameter is Valid
2. All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for module replacement, programming and setup