2010 Cadillac CTS Sedan AWD V6-3.6L Page 135

2010 Cadillac CTS Sedan AWD V6-3.6L Page 135

- Three consecutive seat belt pretensioner deployment events have not occurred.

- One frontal or side air bag deployment has not occurred.

* DTC B0052 becomes a latched DTC after 3 consecutive pretensioner deployments or 1 frontal or side air bag deployment. The DTC is a

latched DTC and cannot be cleared. Replace the SDM after following the instructions in the diagnostic test.

* DTC B0055 is a latched DTC 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/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

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. Verify DTC B0055 is not set.

瀚慖f DTC B0055 is set, replace SDM.

2. Verify DTC B0052 is not set.

瀚慖f DTC B0052 is set, clear the DTC and operate the vehicle within the conditions for running the DTC. If the DTC resets, replace the

SDM.

3. Verify DTC B0053 is not set.

瀚慖f DTC is set along with additional DTCs, repair the malfunction causing the DTCs before replacing 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, B0053, or B0055

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.