2010 Cadillac CTS Sedan AWD V6-3.6L Page 143
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)
* 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)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Ignition OFF, verify that the vehicle does not show any signs of inflator module or pretensioner deployment.
瀚慖f the vehicle displays any signs of inflator deployment, refer to Repairs and Inspections Required After a Collision (See: Body and
Frame/Repairs and Inspections Required After a Collision/Service and Repair).
2. Verify DTC B0052, B0053, or B0055 is not set.
瀚慖f DTC is set , refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble
Code (DTC) List - Vehicle).
3. Clear DTCs. Verify DTC B0056, B0057, or B0058 is not set.
瀚慖f any of the DTCs are set, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* SIR/SRS Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/SIR/SRS Wiring Repairs)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming
B0072
DTC B0072 or B0073
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC B0072 01
- Left Front Seat Belt Sensor Circuit Short to Battery
DTC B0072 02
- Left Front Seat Belt Sensor Circuit Short to Ground
DTC B0072 04
- Left Front Seat Belt Sensor Circuit Open Circuit
DTC B0072 06
- Left Front Seat Belt Sensor Circuit Short To Ground or Open Circuit
DTC B0072 08
- Left Front Seat Belt Sensor Circuit Signal Invalid
