* The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules.
* The SDM detects a side impact of sufficient force to warrant deployment of a side impact module and/or roof rail module.
* The SDM has deployed the seat belt pretensioner for 3 separate deployments.
Action Taken When the DTC Sets
* The SDM requests the instrument panel cluster (IPC) to illuminate the Service Air Bag indicator.
* The SDM records crash data.
Conditions for Clearing the DTC
After an air bag deployment or 3 separate pretensioner deployments the DTC becomes latched and cannot be cleared.
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)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Important: The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment.
The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number
of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
1. Ignition OFF, verify no signs of inflator module or pretensioner deployment exist.
锟斤拷 If any signs of deployment exist, refer to Repairs and Inspections Required After a Collision (See: Body and Frame/Repairs and
Inspections Required After a Collision/Service and Repair/Supplemental Inflatable Restraints).
2. Verify DTC B0052 is not set.
锟斤拷 If DTC B0052 is set, clear DTCs. If the DTC sets, replace the SDM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for SDM replacement, setup, and programming
B0053
DTC B0052 or B0053
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
