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DTC B0052

DTC B0052

Diagnostic Instructions


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

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

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


DTC Descriptor

DTC B0052 00

Deployment Commanded Malfunction

DTC B0052 56

Deployment Commanded Too Many Transitions

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) senses vehicle impacts and provides deployment signals to the air bags and anchor and/or retractor pretensioners when warranted. The SDM sets DTC B0052 after each command for deployment. DTC B0052 will latch and not clear until after 3 commanded deployments by the SDM. The SDM must therefore be replaced using the end of life disposal procedure.

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 or rollover (if equipped) of sufficient force to warrant deployment of a seat side air bag and/or roof rail air bag.


Action Taken When the DTC Sets

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.

Conditions for Clearing the DTC


• DTC B0052 00 is a clearable DTC and may be cleared with a scan tool without replacing the SDM.

• DTC B0052 56 is a latched DTC. This DTC cannot be erased with the scan tool. The SDM must be replaced.


Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification


1. Verify that DTC B0052 00 is not set.

2. If DTC is set, clear the DTC.

3. Verify that DTC B0052 56 is not set.

4. If DTC is set, replace the K36 SDM.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM replacement, setup, and programming