B1019

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 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.



Action Taken When the DTC Sets

* The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.
* 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 Views)
Description and Operation

SIR System Description and Operation (Description and Operation)
Electrical Information Reference

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

1. Ignition ON, verify the scan tool End Model Part Number is correct for the vehicle.

• If the part number is incorrect, reprogram the SDM.

2. Observe the scan tool passenger presence system (PPS) Options parameter to determine how the vehicle PPS is currently configured in the SDM. The scan tool parameter should display Auto, Manual, or Auto + Man and the PPS indicator should be present on the vehicle
3. Verify the actual vehicle equipment and the current configuration indicated by the scan tool parameter are the same.

• If the original configuration does not match the actual vehicle equipment, reprogram the SDM with the correct configuration.

4. 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.

5. Reconnect the harness connector at the SDM.
6. 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.

7. Ignition ON, clear all PPS and SDM DTCs.
8. Operate the vehicle within the Conditions for Running. Verify DTC B1019 does not reset.

• 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