Supplemental Inflatable Restraints

DTC B1019

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptors
DTC B1019 3A
- SDM System Configuration Error Incorrect Component Installed




Circuit/System Description

The inflatable restraint and sensing diagnostic (SDM) is programmed to monitor the number of impact sensors and deployment loops connected. When the ignition is turned ON, the SDM evaluates the number of deployment loops and impact sensors and if a mismatch is detected between the number that the SDM expects and the actual number present, DTC B1019 will set.


Conditions for Running the DTC

Ignition voltage is between 9-16 volts.


Conditions for Setting the DTC

* The incorrect SDM is installed on the vehicle.
* The incorrect software or calibrations have been flashed into the SDM.



Action Taken When the DTC Sets

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


Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.
* A history DTC will clear once 250 malfunction-free ignition cycles have occurred.



Reference Information
Schematic Reference

* Seat Belt Schematics ([1][2]Electrical Diagrams)
* SIR Schematics ([1][2]Air Bag Systems)

Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

* Seat Belt System Description and Operation (Description and Operation)
* SIR System Description and Operation (Description and Operation)

Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Verification

1. Ignition ON, verify that DTC B1019 is not set.

• If the DTC is set, program the SDM.

2. If the DTC resets, replace the SDM.



Repair Instructions

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

* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
* Control Module References (Programming and Relearning) for SDM replacement, setup, and programming