2010 Cadillac CTS Sedan AWD V6-3.6L Page 273
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) stores a 4-digit primary key for the inflatable restraint passenger presence system
(PPS). The SDM sends the PPS the primary key. If the PPS determines that it is the wrong primary key, the PPS will set DTC B1001 and send the
SDM a vehicle mismatch message. The SDM then will set DTC B0081 and illuminate the SIR warning indicator. The PPS 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 PPS.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
* The I/P module deployment is disabled.
Conditions for Clearing the DTC
The 4-digit Primary Key in the SDM and in the PPS match.
Diagnostic Aids
This DTC is an indication that the PPS was not set-up correctly, is not the correct part number or that the PPS is defective.
Reference Information
Schematic Reference
SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
SIR System Description and Operation (See: Restraints and Safety Systems/Air Bag Systems/Description and Operation/SIR System Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/SIR/SRS Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or
replacement of the affected.
* PPS
* PPS wiring harness
1. Verify the correct PPS part number has been installed
瀚慖f the wrong PPS part number was installed, replace with the correct PPS.
2. Verify that DTC B1001 is not set as current in the PPS.
瀚慖f DTC is set as current, perform the Setup New PPS procedure. Verify the SDM is sending the correct key. If DTC resets replace the
