2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 194

2010 Cadillac Truck Escalade EXT AWD 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.