B0055

DTC B0055

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 B0055 00

-
Side Air Bag Deployment Commanded

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) contains a sensing 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 air bags, deploying the side air bags and causing DTC B0055 to set.

This DTC is set when the SDM has commanded an air bag deployment with no faults present.

Conditions for Running the DTC

Ignition voltage is between 9-16 V.

Conditions for Setting the DTC

* The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal air bags.

* The SDM detects a side impact of sufficient force to warrant deployment of a side air bag and/or roof rail air bag.

Action Taken When the DTC Sets

* The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.

* The SDM records crash data.

Conditions for Clearing the DTC

DTC B0055 is a latched code and cannot be cleared.

Reference Information

Schematic Reference

SIR Schematics [1][2]Air Bag Systems

Connector End View Reference

Component Connector End Views A/C Compressor Clutch

Description and Operation

SIR System Description and Operation SIR System

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

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition OFF, Verify that the vehicle does not show any signs of side impact or frontal air bag deployment.

• If the vehicle displays any signs of air bag deployment

Refer to Repairs and Inspections Required After a Collision Service and Repair.

• If the vehicle does not show any signs of air bag deployment

2. Verify DTC B0055 is not set.

• If DTC B0055 is set

Replace the K36 SDM

• If DTC B0055 is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

Control Module References Control Module References for SDM replacement, programming and setup