B0051

DTC B0051

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B0051
- Deployment Commanded

Circuit/System Description

The Inflatable Restraint Sensing and Diagnostic Module contains sensing devices that converts vehicle velocity changes to electrical signals. The Inflatable Restraint Sensing and Diagnostic Module processes the generated electrical signals and compares them to values stored in memory. When the generated signals exceed the stored values, the Inflatable Restraint Sensing and Diagnostic Module performs additional signal processing and compares the generated signals to signals stored in memory. When 2 of the generated signals exceed the stored values, the Inflatable Restraint Sensing and Diagnostic Module will cause current to flow through the air bags, deploying the air bags, and causing DTC B0051 to set.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

* The Inflatable Restraint Sensing and Diagnostic Module detects a frontal impact of sufficient force to warrant deployment of the frontal air bags.

* The Inflatable Restraint Sensing and Diagnostic Module detects a side impact of sufficient force to warrant deployment of a side air bags.

Action Taken When the DTC Sets

* The Inflatable Restraint Sensing and Diagnostic Module requests the Instrument Cluster to illuminate the AIR BAG indicator.

* The Inflatable Restraint Sensing and Diagnostic Module records crash data.

Conditions for Clearing the DTC

DTC B0051 is a latched code. You cannot clear a latched code. Replace the Inflatable Restraint Sensing and Diagnostic Module after following the instructions.

Reference Information

Schematic Reference

SIR Schematics [1][2]Air Bag Systems

Connector End View Reference

Component Connector End Views 5 Bow Lowered Switch (CM7)

Description and Operation

SIR System Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Testing

With a scan tool, verify DTC B0051 is not set.

If DTC is set, replace the Inflatable Restraint Sensing and Diagnostic Module.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs

* Control Module References Control Module References for Inflatable Restraint Sensing and Diagnostic Module replacement, setup, and programming