2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 194
* 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 B0052 00
- Deployment Commanded
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) contains a device that converts vehicle velocity changes into an electrical signal. The
SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional
signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the
SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B0052
* 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.
