GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2008 🢒 Astra 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC B1019

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this 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 B1019 00: Electronic Control Unit (ECU) In Delivery State

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) runs continuous diagnostic tests on the restraints system. When the ignition is turned ON, the SDM will check to see if the correct components are installed for the vehicle configuration. If the SDM detects that there are too few or too many components on the system, DTC B1019 will set.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC
    • The SDM was programmed with the wrong options for the vehicle.
    • The wrong SDM was installed for the content of the vehicle.
    • The SDM connector may have bent pins or shorting bars causing the module to learn deployment loops that are not actually present.

Action Taken When the DTC Sets
    • The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
    • The SDM disables all deployments.

Conditions for Clearing the DTC
    • The correct SDM must be installed.
    • The correct components must be installed.

Diagnostic Aids

If the SDM has been replaced, make sure that the correct part number was installed for this vehicle.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

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 Testing
  1. Verify if any other DTCs are set as current in the SDM.
    2. ⇒If any SDM DTCs are current, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
  2. Perform the SDM Setup, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup.
  3. Verify that DTC B1019 is not set as current.
    4. ⇒If DTC B1019 is current, replace the SDM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  SIR/SRS Wiring Repairs
    •  Control Module References for SDM replacement, setup, and programming