B1019

DTC B1019

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 B1019 00
- System Configuration Error

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 SDM 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 [1][2]Air Bag Systems
Connector End View Reference

Component Connector End Views Connector End Views By Name
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

Scan Tool Reference

Control Module References Programming and Relearning

Circuit/System Testing

Important: When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected:


* PPS module

* SDM

* PPS module wiring harness connector

* SDM wiring harness connector


1. With a scan tool verify the BCM is programmed with the correct VIN.

• If not the correct VIN, refer to Body Control Module Programming and Setup Testing and Inspection.

2. Ignition OFF, disconnect the harness connectors at the SDM and verify the connector is in good condition and has no bent pins, terminals or shorting bars

• If damage is found, repair the bent pins, terminals or shorting bars as needed and perform the Setup New SDM procedure.

3. Connect the harness connector at the SDM.
4. Ignition ON, verify the scan tool system configuration matches the actual components installed on the vehicle.

• If the system configuration does not match the actual components installed, reprogram the SDM with the correct components.

5. Ignition ON, clear all PPS and SDM DTCs.
6. Verify DTC B1019 does not set.

• If DTC sets, replace the SDM.

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 Programming and Relearning for SDM replacement, setup, and programming