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) monitors the number of safety components installed on the vehicle. When the ignition is turned ON, the inflatable restraint sensing and diagnostic module evaluates the number of safety components installed and compares it to the number of components the inflatable restraint sensing and diagnostic module expects to see on the vehicle with its current calibration. If there is a mismatch between detected components and the components programmed with the inflatable restraint sensing and diagnostic module calibration, DTC B1019 will set. The components (if equipped) that the inflatable restraint sensing and diagnostic module will detect include inflatable restraint deployment loops, impact sensors, passenger presence system components, seat position sensors, disable switches, and seat belt switches.
Conditions for Running the DTC
Ignition voltage is between 9-16 V.
Conditions for Setting the DTC
The setup for the inflatable restraint sensing and diagnostic module has not been completed and the inflatable restraint sensing and diagnostic module does not detect the passenger presence system (if equipped), the correct number of sensors, or deployment loops, that is expected with this calibration.
Action Taken When the DTC Sets
* The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG warning indicator.
* The DTC must be cleared before running the setup inflatable restraint sensing and diagnostic module.
* Air bag indicator will continue to flash until inflatable restraint sensing and diagnostic module setup procedure is complete.
Conditions for Clearing the DTC
* The condition for setting the DTC is no longer present.
* A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
Diagnostic Aids
The inflatable restraint sensing and diagnostic module scan tool deployment loop, impact sensor, and passenger presence (if equipped) data will match what the inflatable restraint sensing and diagnostic module has been programmed to expect to see on the vehicle. B1019 DTC will set if a deployment loop or impact sensor is added or removed from the system, or if the passenger presence is not detected.
DTC B1019 will set when an open/high resistance DTC sets for a deployment loop or impact sensor. This causes mismatch between the learned and actual components connected to the inflatable restraint sensing and diagnostic module.
DTC B1019 can set with no other DTCs if an unused deployment loop or impact sensor circuit is shorted to ground. This causes a mismatch between the learned and actual components connected to the inflatable restraint sensing and diagnostic module.
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 Sunshade - Left (DH6)
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 Circuit Testing
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Connector Repairs Connector Repairs
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Note: DTC B1019 can set after the inflatable restraint sensing and diagnostic module has been replaced and/or reprogrammed before the setup procedure is completed. The setup procedure cannot be completed if DTC B1019 is set as current or history. If a short or open is detected in a deployment circuit prior to the setup procedure being performed, the inflatable restraint sensing and diagnostic module will set DTC B1019.
1. Ignition ON.
2. Verify no other inflatable restraint sensing and diagnostic module DTCs are set.
• If other inflatable restraint sensing and diagnostic module DTCs are set
Diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle
• If no other inflatable restraint sensing and diagnostic module DTCs are set
3. Verify the impact sensors called out in the scan tool data list match the number of actual impact sensors installed on the vehicle.
• If the number of impact sensors do not match
1. Verify the correct inflatable restraint sensing and diagnostic module calibration file is loaded in the inflatable restraint sensing and diagnostic module.
• If the inflatable restraint sensing and diagnostic module calibration file is correct and the vehicle contains an incorrect number of sensors, identify which sensors are missing to make the vehicle match the inflatable restraint sensing and diagnostic module impact sensor calibration scan tool data list.
• If the calibration file is incorrect
2. Reprogram the inflatable restraint sensing and diagnostic module. Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup Testing and Inspection
• If the number of impact sensors match
4. Verify the enabled deployment loops called out in the scan tool data list match the deployment loops installed on the vehicle.
• If the number of enabled deployment loops do not match
1. Verify the correct inflatable restraint sensing and diagnostic module calibration file is loaded in the inflatable restraint sensing and diagnostic module.
• If the inflatable restraint sensing and diagnostic module calibration file is correct and the vehicle contains an incorrect number of loops, identify which deployment loops are missing to make the vehicle match the inflatable restraint sensing and diagnostic module impact sensor calibration scan tool data list.
• If the calibration file is incorrect
2. Reprogram the inflatable restraint sensing and diagnostic module. Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup Testing and Inspection
• If the number of enabled deployment loops match
5. Verify a passenger presence system is equipped on the vehicle.
• If a passenger presence system is not equipped on the vehicle
Replace the K36 inflatable restraint sensing and diagnostic module.
• If a passenger presence system is equipped on the vehicle
6. Verify the passenger presence enable status called out in the scan tool data list is enabled.
• If the passenger presence enable status is not enabled
Refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup Testing and Inspection
• If the passenger presence is enabled
7. Verify the passenger presence learn status called out in the scan tool data list is learned.
• If the passenger presence learn status is not learned
1. Verify the scan tool can communicate with the passenger presence system.
• If the scan tool will not communicate with the passenger presence system, refer to Scan Tool Does Not Communicate with Low Speed GMLAN Device Scan Tool Does Not Communicate with Low Speed GMLAN Device
• If the scan tool communicates
2. Ignition OFF, disconnect the scan tool.
3. Ignition ON, verify DTC B1019 is not set as current.
• If the DTC is set as current, refer to Inflatable Restraint Sensing and Diagnostic Module Programming and Setup Testing and Inspection
• If the DTC is not set as current
4. All OK.
• If the passenger presence learn status is learned
8. Replace the K36 inflatable restraint sensing and diagnostic module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* SIR/SRS Wiring Repairs SIR/SRS Wiring Repairs
* Control Module References Control Module References for inflatable restraint sensing and diagnostic module replacement, programming and setup