Supplemental Inflatable Restraint System Buick Regal V

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Circuit/System Verification

Note. Refer to SIR Service Precautions . Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Driver Steering Wheel Air bag Driver steering wheel air bag coil Inflatable Restraint Sensing and Diagnostic Module Air bag wiring harness connector Inflatable Restraint Sensing and Diagnostic Module wiring harness connector The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace any CPA that is damaged or missing. If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the high resistance condition due to terminal fretting corrosion.

Verify the appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1-4.0 ohms without any spikes or dropouts while turning the steering wheel 360 degrees in one direction then back 360 degrees in the other direction. If less than 2.1 ohms or greater than 4.0 ohms Refer to Circuit/System Testing. If there are spikes or dropouts Replace the X85 driver steering wheel air bag coil. If between 2.1-4.0 ohms without any spikes or dropouts
Verify DTC B0012 or B0013 is only set as a history DTC. If the DTC is set as current Refer to Circuit/System Testing. If the DTC is set as history
Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1-4.0 ohms without any drop outs or spikes while moving the harness near each connector listed below. X85 Steering wheel air bag coil F107 Steering wheel air bag. Any inline harness connector K36 inflatable restraint sensing and diagnostic module If the reading is erratic while moving the harness, perform the following Inspect each connector terminal for damage or corrosion and repair as necessary. Apply Nyogel lubricant 760G to each connector terminal. Ensure each connector and CPA is correctly seated. If between 2.1-4.0 ohms without any spikes or dropouts
All OK.

Circuit/System Testing

Ignition OFF, disconnect the scan tool and disconnect the appropriate harness connector listed below at the F107 driver steering wheel air bag. It may take up to 2 minutes for all vehicle systems to power down. DTC B0012 connector X1 DTC B0013 connector X2
Test for greater than 25 ohms between the control circuit terminal 1 and the control circuit terminal 2. If 25 ohms or less Disconnect the X1 harness connector at the K36 inflatable restraint sensing and diagnostic module. NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar. Test for infinite resistance between the two control circuits. If less than infinite resistance, repair the short between the two circuits. If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module. If greater than 25 ohms
Ignition ON.
Test for less than 11 V between each control circuit terminal listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 11 V or greater Ignition OFF, disconnect the X1 harness connector at the K36 inflatable restraint sensing and diagnostic module, ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K36 inflatable restraint sensing and diagnostic module. If less than 11 V
Ignition OFF.
Test for greater than 25 ohms between each control circuit terminal listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 25 ohms or less Disconnect the X1 harness connector at the K36 inflatable restraint sensing and diagnostic module. NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module. If greater than 25 ohms
Install a 3 A fused jumper wire between the control circuit terminal 1 and the control circuit terminal 2, ignition ON.
Verify the scan tool Deployment Loop Resistance parameter is consistently less than 2 ohms while turning the steering wheel 360 degrees in one direction then back 360 degrees in the other direction. If the reading is erratic while turning the steering wheel Replace the X85 driver steering wheel airbag coil. If 2 ohms or greater Ignition OFF, disconnect the X1 harness connector at the K36 inflatable restraint sensing and diagnostic module. Test for less than 2 ohms in the K85 steering wheel airbag coil and each control circuit end to end. If 2 ohms or greater, replace the coil or repair the open/high resistance in the circuit. If less than 2 ohms, replace the K36 inflatable restraint sensing and diagnostic module. If less than 2 ohms
Ignition OFF, connect the harness connector at the F107 steering wheel air bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.
Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
Verify DTC B0012 or B0013 is not set. If DTC B0012 or B0013 is set Replace the F107 steering wheel air bag. If DTC B0012 or B0013 is not set
All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

«Steering Wheel Airbag Coil Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Steering Wheel Inflatable Restraint Module Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	High Resistance	Open	Short to Voltage
Left Front Seat Air Bag High Control	B0014 02, B0014 0E	B0014 0D	B0014 04, B0014 0D	B0014 01
Left Front Seat Air Bag Low Control	B0014 02, B0014 0E	B0014 0D	B0014 04, B0014 0D	B0014 01
Right Front Seat Air Bag High Control	B0021 02, B0021 0E	B0021 0D	B0021 04, B0021 0D	B0021 01
Right Front Seat Air Bag Low Control	B0021 02, B0021 0E	B0021 0D	B0021 04, B0021 0D	B0021 01
Left Rear Seat Air Bag High Control	B0031 02, B0031 0E	B0031 0D	B0031 04, B0031 0D	B0031 01
Left Rear Seat Air Bag Low Control	B0031 02, B0031 0E	B0031 0D	B0031 04, B0031 0D	B0031 01
Right Rear Seat Air Bag High Control	B0038 02, B0038 0E	B0038 0D	B0038 04, B0038 0D	B0038 01
Right Rear Seat Air Bag Low Control	B0038 02, B0038 0E	B0038 0D	B0038 04, B0038 0D	B0038 01

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag. There are 2 shorting bars used within the connector that will short the control circuits together when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or retractor pretensioner during servicing.

Ignition voltage is between 9-16 V.

B0014 01, B0021 01, B0031 01, B0038 01

The air bag control circuit is shorted to voltage for 2 seconds.

B0014 02, B0021 02, B0031 02, B0038 02

The air bag control circuit is shorted to ground for 2 seconds.

B0014 04, B0021 04, B0031 04, B0038 04

The air bag control circuit is open for 2 seconds.

B0014 0D, B0021 0D, B0031 0D, B0038 0D

The air bag deployment loop resistance is greater than 4.2 ohms for 2 seconds.

B0014 0E, B0021 0E, B0031 0E, B0038 0E

The air bag deployment loop resistance is less than 1.4 ohms for 2 seconds.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
The SDM will store a DTC, however if an event occurs the system will still attempt deployments.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Note. The following diagnostic aids apply for both current and history DTCs.

Left and rear seat side air bags
Left and right roof rail air bags
Inline harness connectors
Harness side of the SDM connector

Terminal fretting or incorrectly seated connector can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extent of travel while using the scan tool to observe deployment type loop parameters.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Note. Refer to SIR Service Precautions . Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Seat belt retractor pretensioner Passenger instrument panel air bag Knee air bag Seat air bag Roof rail air bag SDM All wiring harness connectors SDM wiring harness connector

Note. The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the high resistance condition due to terminal fretting corrosion.

Verify the appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1-4.0 ohms without any spikes or dropouts while moving the harness near each connector. F106 Seat air bag Any inline harness connector K36 inflatable restraint sensing and diagnostic module If less than 2.1 ohms or greater than 4.0 ohms Refer to Circuit/System Testing. If there are spikes or dropouts, perform the following Inspect each connector terminal and harness for damage or corrosion and repair as necessary Apply Nyogel lubricant 760G to each connector terminal Ensure each connector and CPA is correctly seated. If between 2.1-4.0 ohms without any spikes or dropouts
All OK

Ignition OFF, scan tool disconnected, disconnect the appropriate F106 seat air bag harness connector. It may take up to 2 minutes for all vehicle systems to power down.
Test for greater than 25 ohms between the control circuit terminals 1 and 2. If 25 ohms or less Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar. Test for infinite resistance between the two control circuits. If less than infinite resistance, repair the short between the two circuits. If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module. If greater than 25 ohms
Ignition ON.
Test for less than 11 V between each control circuit terminal listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 11 V or greater Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module, ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K36 inflatable restraint sensing and diagnostic module. If less than 11 V
Ignition OFF.
Test for greater than 25 ohms between each control circuit terminal listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 25 ohms or less Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module. If greater than 25 ohms
Install a 3 A fused jumper wire between the control circuit terminals 1 and 2. Ignition ON.
Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohms. If 2 ohms or greater Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K36 inflatable restraint sensing and diagnostic module. If less than 2 ohms
Ignition OFF, connect the harness connector at the F106 seat air bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.
Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
Verify DTC B0014, B0021, B0031, or B0038 is not set. If DTC B0014, B0021, B0031, or B0038 is set Replace the F106 seat air bag. If DTC B0014, B0021, B0031, or B0038 is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Driver or Passenger Seat Side Inflatable Restraint Module Replacement (6-Way Hybrid, 6-Way Hybrid Sport)»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Rear Seat Side Inflatable Restraint Module Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	High Resistance	Open	Short to Voltage
Left Front Seat Belt Retractor Pretensioner High Control	B0015 02, B0015 0E	B0015 0D	B0015 04, B0015 0D	B0015 01
Left Front Seat Belt Retractor Pretensioner Low Control	B0015 02, B0015 0E	B0015 0D	B0015 04, B0015 0D	B0015 01
Driver Seat Belt Anchor Pretensioner Low Control	B001A 02, B001A 0E	B001A 0D	B001A 04	B001A 01
Driver Seat Belt Anchor Pretensioner High Control	B001A 02, B001A 0E	B001A 0D	B001A 04	B001A 01
Passenger Seat Belt Anchor Pretensioner Low Control	B001B 02, B001B 0E	B001B 0D	B001B 04	B001B 01
Passenger Seat Belt Anchor Pretensioner High Control	B001B 02, B001B 0E	B001B 0D	B001B 04	B001B 01
Right Front Seat Belt Retractor Pretensioner High Control	B0022 02, B0022 0E	B0022 0D	B0022 04, B0022 0D	B0022 01
Right Front Seat Belt Retractor Pretensioner Low Control	B0022 02, B0022 0E	B0022 0D	B0022 04, B0022 0D	B0022 01

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. There are 2 shorting bars which will short the control circuits together when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Ignition voltage is between 9-16 V.

B0015 01, B001A 01, B001B 01, B0022 01

The pretensioner control circuit is shorted to voltage for 2 seconds.

B0015 02, B001A 02, B001B 02, B0022 02

The pretensioner control circuit is shorted to ground for 2 seconds.

B0015 04, B001A 04, B001B 04, B0022 04

The pretensioner control circuit is open for 2 seconds.

B0015 0D, B001A 0D, B001B 0D, B0022 0D

The pretensioner deployment loop resistance is greater than 4.2 ohms for 2 seconds.

B0015 0E, B001A 0E, B001B 0E, B0022 0E

The pretensioner deployment loop resistance is less than 1.4 ohms for 2 seconds.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
The SDM will store a DTC, however if an event occurs the system will still attempt deployments.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Note. The following diagnostic aids apply for both current and history DTCs.

Driver and passenger anchor or retractor pretensioners
Inline harness connectors
Harness side of the SDM connector

Terminal fretting or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extent of travel while using the scan tool to observe deployment type loop parameters.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Note. Refer to SIR Service Precautions . Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Seat belt retractor pretensioner Passenger instrument panel air bag Knee air bag Seat air bag Roof rail air bag SDM Seat belt retractor pretensioner wiring harness connector Passenger instrument panel air bag wiring harness connector Seat side air bag wiring harness connector Roof rail air bag wiring harness connector SDM wiring harness connector

Verify the appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1-4.0 ohms without any spikes or dropouts while moving the harness near each connector listed below: F112 seat belt retractor pretensioner F113 seat belt anchor pretensioner Any inline harness connector K36 inflatable restraint and sensing diagnostic module If less than 2.1 ohms or greater than 4.0 ohms Refer to Circuit/System Testing. If there are spikes or dropouts, perform the following Inspect each connector terminal and harness for damage or corrosion and repair as necessary Ensure each connector and CPA is correctly seated. If between 2.1-4.0 ohms without any spikes or dropouts
All OK

Ignition OFF, scan tool disconnected, disconnect the appropriate harness connector listed below. It may take up to 2 minutes for all vehicle systems to power down. F112 Seat belt retractor pretensioner F113 Seat belt anchor pretensioner
Test for greater than 25 ohms between the control circuit terminals 1 and 2. If 25 ohms or less Disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module. NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar. Test for infinite resistance between the two control circuits. If less than infinite resistance, repair the short between the two circuits. If infinite resistance, replace the K36 inflatable restraint and sensing diagnostic module. If greater than 25 ohms
Ignition ON.
Test for less than 11 V between each control circuit terminal listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 11 V or greater Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module, ignition ON Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K36 inflatable restraint and sensing diagnostic module. If less than 11 V
Ignition OFF.
Test for greater than 25 ohms between each control circuit terminal listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 25 ohms or less Disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the K36 inflatable restraint and sensing diagnostic module. If greater than 25 ohms
Install a 3 A fused jumper wire between the control circuit terminals 1 and 2, ignition ON.
Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohms. If 2 ohms or greater Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint and sensing diagnostic module. Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K36 inflatable restraint and sensing diagnostic module. If less than 2 ohms
Ignition OFF, connect the harness connector at the F112 seat belt retractor pretensioner or F113 seat belt anchor pretensioner, press in the CPA (if equipped) until an audible and/or tactile click is heard.
Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
Verify DTC B0015, B001A, B001B, or B0022 is not set. If DTC B0015, B001A, B001B, or B0022 is set Replace the F112 seat belt retractor pretensioner or F113 seat belt anchor pretensioner. If DTC B0015, B001A, B001B, or B0022 is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Front Seat Belt Anchor Plate Tensioner Replacement (2/4/6-Way Hybrid, 6-Way Hybrid Sport)»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Driver or Passenger Seat Retractor Side Belt Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	High Resistance	Open	Short to Voltage
Left Roof Rail Air Bag High Control	B0016 02, B0016 0E	B0016 0D	B0016 04, B0016 0D	B0016 01
Left Roof Rail Air Bag Low Control	B0016 02, B0016 0E	B0016 0D	B0016 04, B0016 0D	B0016 01
Right Roof Rail Air Bag High Control	B0023 02, B0023 0E	B0023 0D	B0023 04, B0023 0D	B0023 01
Right Roof Rail Air Bag Low Control	B0023 02, B0023 0E	B0023 0D	B0023 04, B0023 0D	B0023 01

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. There are 2 shorting bars which will short together control circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Ignition voltage is between 9-16 V.

B0016 01, B0023 01

The air bag control circuit is shorted to voltage for 2 seconds.

B0016 02, B0023 02

The air bag control circuit is shorted to ground for 2 seconds.

B0016 04, B0023 04

The air bag control circuit is open for 2 seconds.

B0016 0D, B0023 0D

The air bag deployment loop resistance is greater than 4.2 ohms for 2 seconds.

B0016 0E, B0023 0E

The air bag deployment loop resistance is less than 1.4 ohms for 2 seconds.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
The SDM will store a DTC, however if an event occurs the system will still attempt deployments.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Note. The following diagnostic aids apply for both current and history DTCs.

Passenger instrument panel air bag
Driver and passenger seat side air bags
Left and right roof rail air bags
Driver and passenger retractor pretensioners
Inline harness connectors
Harness side of the SDM connector

Terminal fretting or incorrectly seated connectors can cause an open/high resistance condition. Check the circuit terminals for fretting or incorrectly seated connector if a DTC with symptom byte 04 or 0D is set. DTCs of deployment loops which are in the seat DTC can occur because of stress or damage to the harness due to seat movement. Move the seat to the full extent of travel while using the scan tool to observe deployment type loop parameters.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Note. Refer to SIR Service Precautions . Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Seat belt retractor pretensioner Passenger instrument panel air bag Seat side air bag Roof rail air bag SDM Seat belt retractor pretensioner wiring harness connector Passenger instrument panel air bag wiring harness connector Seat side air bag wiring harness connector Roof rail air bag wiring harness connector SDM wiring harness connector

Verify the appropriate scan tool Deployment Loop Resistance parameters stay consistently between 2.1 and 4.0 ohms without any spikes or dropouts while moving the harness near each connector listed below: F105L Roof rail air bag - left F105R Roof rail air bag - right Any inline harness connector K36 SDM If less than 2.1 or greater than 4.0 ohms Refer to Circuit/System Testing. If there are spikes or dropouts, perform the following Inspect each connector terminal and harness for damage or corrosion and repair as necessary Apply Nyogel lubricant 760G to each connector terminal Insure each connector and CPA is correctly seated. If within 2.1 and 4.0 ohms without any spikes or dropouts
All OK

Ignition OFF. Scan tool disconnected. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the appropriate harness connector at the roof rail air bag listed below: DTC B0016 - F105L Roof rail air bag - left DTC B0023 - F105R Roof rail air bag - right
Test for greater than 25 ohms between the control circuit terminals 1 and 2. If 25 ohms or less Disconnect the X2 harness connector at the K36 SDM. NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar. Test for infinite resistance between the two control circuits. If less than infinite resistance, repair the short between the two circuits. If infinite resistance, replace the K36 SDM. If greater than 25 ohms
Ignition ON.
Test for less than 11 V between the control circuit terminals listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 11 V or greater Ignition OFF. Disconnect the X2 harness connector at the K36 SDM. Ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K36 SDM. If less than 11 V
Ignition OFF.
Test for greater than 25 ohms between the control circuit terminals listed below and ground: Control circuit terminal 1 Control circuit terminal 2 If 25 ohms or less Disconnect the X2 harness connector at the K36 SDM. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the K36 SDM. If greater than 25 ohms
Ignition OFF. Install a 3 A fused jumper wire between the appropriate control circuit terminals 1 and 2. Ignition ON.
Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohms. If 2 ohms or greater Ignition OFF. Disconnect the X2 harness connector at the K36 SDM. Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K36 SDM. If less than 2 ohms
Ignition OFF, connect the harness connector at the F105L roof rail air bag - left or F015R roof rail air bag - right, press in the CPA (if equipped) until an audible and/or tactile click is heard.
Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
Verify DTC B0016, B0018, B0023, or B0025 is not set. If DTC B0016, B0018, B0023, or B0025 is set Replace the appropriate F105L roof rail air bag - left or F015R roof rail air bag - right. If DTC B0016, B0018, B0023, or B0025 is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Inflatable Restraint Roof Side Rail Module Replacement - Left Side»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Inflatable Restraint Roof Side Rail Module Replacement - Right Side»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	High Resistance	Open	Short to Voltage
Passenger Instrument Panel Air Bag Stage 1 High Control	B0019 02, B0019 0E	B0019 0D	B0019 04, B0019 0D	B0019 01
Passenger Instrument Panel Air Bag Stage 1 Low Control	B0019 02, B0019 0E	B0019 0D	B0019 04, B0019 0D	B0019 01
Passenger Instrument Panel Air Bag Stage 2 High Control	B0020 02, B0020 0E	B0020 0D	B0020 04, B0020 0D	B0020 01
Passenger Instrument Panel Air Bag Stage 2 Low Control	B0020 02, B0020 0E	B0020 0D	B0020 04, B0020 0D	B0020 01

During a side or frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an air bag or pretensioner. There are 2 shorting bars which will short together control circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing.

Ignition voltage is between 9-16 V.

B0019 01, B0020 01

The air bag control circuit is shorted to voltage for 2 seconds.

B0019 02, B0020 02

The air bag control circuit is shorted to ground for 2 seconds.

B0019 04, B0020 04

The air bag control circuit is open for 2 seconds.

B0019 0D, B0020 0D

The air bag deployment loop resistance is greater than 4.2 ohms for 2 seconds.

B0019 0E, B0020 0E

The air bag deployment loop resistance is less than 1.4 ohms for 2 seconds.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
The SDM will store a DTC, however if an event occurs the system will still attempt deployments.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Note. The following diagnostic aids apply for both current and history DTCs.

Passenger instrument panel air bag
Inline harness connectors
Harness side of the SDM connector

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38125-580 Terminal Release Tool Kit

Note. Refer to SIR Service Precautions . Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Seat belt retractor pretensioner Passenger instrument panel air bag Knee air bag Seat air bag Roof rail air bag SDM Seat belt retractor pretensioner wiring harness connector Passenger instrument panel air bag wiring harness connector Seat side air bag wiring harness connector Roof rail air bag wiring harness connector SDM wiring harness connector

Verify the scan tool Deployment Loop Resistance parameters stay consistently between 2.1 and 4.0 ohms without any spikes or dropouts while moving the harness near each connector listed below: F105 Passenger instrument panel air bag Any inline harness connector K36 SDM If less than 2.1 or greater than 4.0 ohms Refer to Circuit/System Testing. If there are spikes or dropouts, perform the following Inspect each connector terminal and harness for damage or corrosion and repair as necessary Apply Nyogel lubricant 760G to each connector terminal Insure each connector and CPA is correctly seated. If within 2.1 and 4.0 ohms without any spikes or dropouts
All OK

Ignition OFF. Scan tool disconnected. Disconnect the F105 passenger instrument panel air bag inline harness connector X205. It may take up to 2 minutes for all vehicle systems to power down.
Test for greater than 25 ohms between the appropriate control circuit terminals listed below on the K36 SDM side of the connector: F105 Passenger instrument panel air bag stage 1 X205 terminal 1 and 2 F105 Passenger instrument panel air bag stage 2 X205 terminal 4 and 5 If 25 ohms or less Disconnect the X1 harness connector at the K36 SDM. NOTE: Some connectors may be equipped with shorting bars as a safety component to prevent accidental inflator deployment. When testing on a connector with shorting bars, the shorting bars must be disabled to ensure accurate test results. Insert an appropriate pick from EL-38125-580 and depress the shorting bars above the appropriate terminals. This will lift the shorting bar from the terminal and allow accurate test results. Take care not to damage the connector, shorting bar, or terminal when depressing the shorting bar. Test for infinite resistance between the two control circuits. If less than infinite resistance, repair the short between the two circuits. If infinite resistance, replace the K36 SDM. If greater than 25 ohms
Ignition ON.
Test for less than 11 V between the control circuit terminals listed below and ground: X205 control circuit terminal 1 X205 control circuit terminal 2 X205 control circuit terminal 4 X205 control circuit terminal 5 If 11 V or greater Ignition OFF. Disconnect the X1 harness connector at the K36 SDM. Ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K36 SDM. If less than 11 V
Ignition OFF.
Test for greater than 25 ohms between the control circuit terminals listed below and ground: X205 control circuit terminal 1 X205 control circuit terminal 2 X205 control circuit terminal 4 X205 control circuit terminal 5 If 25 ohms or less Disconnect the X1 harness connector at the K36 SDM. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the K36 SDM. If greater than 25 ohms
Install a 3 A fused jumper wire between the control circuit terminals listed below: F105 Passenger instrument panel air bag stage 1 X205 terminal 1 and 2 F105 Passenger instrument panel air bag stage 2 X205 terminal 4 and 5
Ignition ON.
Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohms. If 2 ohms or greater Ignition OFF. Disconnect the X1 harness connector at the K36 SDM. Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K36 SDM. If less than 2 ohms
Ignition OFF. Reconnect the inline harness connector X205. Disconnect the appropriate F105 Passenger instrument panel air bag harness connector X1 (DTC B0019) or X2 (DTC B0020). Ignition ON.
Test for less than 11 V between the control circuit terminals listed below and ground: F105 passenger instrument panel air bag control circuit terminal 1 X1 F105 passenger instrument panel air bag control circuit terminal 2 X1 F105 passenger instrument panel air bag control circuit terminal 1 X2 F105 passenger instrument panel air bag control circuit terminal 2 X2 If 11 V or greater Repair the short to voltage on the circuit. If less than 11 V
Ignition OFF.
Test for greater than 25 ohms between the control circuit terminals listed below and ground: F105 passenger instrument panel air bag control circuit terminal 1 X1 F105 passenger instrument panel air bag control circuit terminal 2 X1 F105 passenger instrument panel air bag control circuit terminal 1 X2 F105 passenger instrument panel air bag control circuit terminal 2 X2 If 25 ohms or less Repair the short to ground on the circuit. If greater than 25 ohms
Install a 3 A fused jumper wire between the control circuit terminals listed below: F105 Passenger instrument panel air bag stage 1 control circuit terminal 1 X1 and 2 X1 F105 Passenger instrument panel air bag stage 2 control circuit terminal 1 X2 and 2 X2
Ignition ON.
Verify the scan tool Deployment Loop Resistance parameter is less than 2 ohms. If 2 ohms or greater Ignition OFF. Disconnect the X1 harness connector at the K36 SDM. Test for less than 2 ohms in each control circuit end to end. If greater than 2 ohms Repair the open/high resistance in the circuit between the F105 passenger instrument panel air bag connector and the X205 inline harness connector. If less than 2 ohms
Ignition OFF, connect the harness connector at the F105 passenger instrument panel air bag, press in the CPA (if equipped) until an audible and/or tactile click is heard.
Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
Verify DTC B0019 or B0020 is not set. If DTC B0019 or B0020 is set Replace the F105 passenger instrument panel air bag. If DTC B0019 or B0020 is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Instrument Panel Inflatable Restraint Module Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM control module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using the diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) senses vehicle impacts and provides deployment signals to the air bags and anchor and/or retractor pretensioners when warranted. The SDM sets DTC B0052 after each command for deployment. DTC B0052 will latch and not clear after 3 commanded deployments by the SDM. And therefore the SDM has to be replaced using end of life disposal procedure.

Ignition voltage is between 9-16 V.

The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal air bags.
The SDM detects a side impact or rollover (if equipped) of sufficient force to warrant deployment of a seat side air bag and/or roof rail air bag.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.

DTC B0052 00 is a clearable DTC and may be cleared with a scan tool without replacing the SDM.
DTC B0052 56 is a latched DTC. The DTC cannot be cleared with the scan tool. Replacement of the SDM is required.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify that DTC B0052 00 is not set. If DTC B0052 00 is set Clear the DTC. If DTC B0052 00 is not set
Verify that DTC B0052 56 is not set. If DTC B0052 56 is set Replace the K36 inflatable restraint sensing and diagnostic module. If DTC B0052 56 is not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for SDM control module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The passenger presence module monitors the sensor status continually. Whenever the sensor mat has an internal malfunction, the passenger presence module will set DTC B0074.

Ignition voltage is between 9-16 V.

B0074 01

The passenger presence module has detected a short to voltage.

B0074 02

The passenger presence module has detected a short to ground.

B0074 08

The passenger presence module has detected an invalid signal.

B0074 11

The passenger presence module has detected a short to voltage.

The SDM requests the instrument panel cluster to illuminate the AIR BAG indicator.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

If either the inflatable restraint sensing and diagnostic module or passenger presence module were replaced verify that the correct part numbers were used for the vehicle application.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Note. This system is serviced as a kit (module and sensing mat). Perform Passenger Presence System Programming and Setup procedure whenever a component is replaced. Inspect the following component connectors for damage or corrosion. Repair or replace the affected component/connector: Passenger presence module harness connector Seat wiring harness to vehicle harness connector The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click.

Confirm that all passenger presence module and sensor connectors are fully seated.
Verify DTC B0074 is not set. If DTC B0074 is set Replace the K85 passenger presence module. If DTC B0074 does not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for passenger presence system and inflatable restraint sensing and diagnostic module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) and the passenger presence module perform tests to diagnose critical malfunctions. Upon a successful power-up mode the SDM will illuminate both PASSENGER AIRBAG ON/OFF indicators. If the SDM detects a fault in the passenger presence module, it may disable the passenger instrument panel air bag deployment loop, set DTC B0081 00 or DTC B0081 3A and illuminate the AIRBAG indicator.

Ignition voltage is between 9-16 V.

B0081 00

The SDM has received a fault present message from the passenger presence module.

B0081 3A

The SDM has received a message from the passenger presence module indicating a vehicle and passenger presence module mismatch.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
The passenger instrument panel air bag deployment loop will be disabled.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

If either the SDM or PPS were replaced verify that the correct part numbers were used for the vehicle application.
If this DTC is set as either current or history it may have been caused by an electronic device. If an electronic device (Computers, MP3 Players, Cell Phones, Diagnostic Scan Tool, etc.) was placed on the passenger seat the passenger presence module may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Make sure there are no objects on the passenger seat and clear the DTCs. If this DTC resets then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.
If this DTC is set as either current or history it may have been caused by an aftermarket seat heater. The aftermarket seat heater may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Remove the aftermarket seat heater from the passenger seat and clear the DTCs. If this DTC resets then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Note. This system is serviced as a kit (seat foam, module and/or sensing mat). Perform a Passenger Presence System Preload procedure whenever a component is replaced. Refer to Passenger Presence System Programming and Setup . Both SDM and Passenger Presence Module set DTC B0081 but with different symptom bytes. Therefore it is important to identify which module has set the DTC B0081. Use the symptom bytes as a way of identify the correct module to diagnose.

Verify that DTC B1001 is not set in the SDM. If DTC B1001 is set in the SDM Refer to «DTC B1001»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system) . If DTC B1001 is not set in the SDM
Verify that DTC B0074, B101D, or B101E is not set in the passenger presence module. If any of these DTCs are set in the passenger presence module Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If none of these DTCs are set in the passenger presence module
Verify that DTC B0081 00 is not set in the SDM If DTC B0081 00 is set in the SDM If DTC B0081 00 is set in the SDM, then the passenger presence module has set a B0081 11 or a B0081 4B. Refer to B0081 (Passenger Presence Module) for diagnosis. If DTC B0081 00 is not set in the SDM
Verify that DTC B0081 3A is not set in the SDM. If DTC B0081 3A is set in the SDM Replace the K85 passenger presence module. If DTC B0081 3A is not set in the SDM
All OK.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for passenger presence system and SDM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) and the passenger presence module perform tests to diagnose critical malfunctions. Upon a successful power-up mode the inflatable restraint sensing and diagnostic module will illuminate both PASSENGER AIRBAG ON/OFF indicators. If the inflatable restraint sensing and diagnostic module detects a fault in the passenger presence module, it may disable the passenger instrument panel air bag deployment loop, set DTC B0081 and illuminate the AIRBAG indicator.

Ignition voltage is between 9-16 V.

Any of the following conditions must exist for 5 seconds.

B0081 11

The passenger presence module has failed the preload procedure.

B0081 4B

The passenger presence module is not calibrated.

B0081 5A

The passenger presence module detects a plausibility error.

The inflatable restraint sensing and diagnostic module requests the instrument cluster to illuminate the AIR BAG indicator.
The passenger instrument panel air bag deployment loop will be disabled.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

If either the inflatable restraint sensing and diagnostic module or passenger presence system were replaced verify that the correct part numbers were used for the vehicle application.
If this DTC is set as either current or history it may have been caused by an aftermarket seat heater. The aftermarket seat heater may command the passenger air bag indicator to turn on and/or command the passenger seat belt indicator to turn on. Remove the aftermarket seat heater from the passenger seat and clear the DTCs. If this DTC resets then perform this diagnostic. If the DTC does not reset there is no further work needed on the passenger presence system.

Description and Operation

Scan Tool Reference

Control Module References for scan tool information

Note. This system is serviced as a kit (seat foam, module and sensing mat). Perform a passenger presence system preload procedure whenever a component is replaced. Refer to Passenger Presence System Programming and Setup . Both inflatable restraint sensing and diagnostic module and passenger presence module set DTC B0081 but with different symptoms bytes. Therefore it is important to identify which module has set the DTC B0081. Use the symptom bytes as a way of identify the correct module to diagnose. The inflatable restraint sensing and diagnostic module sets a B0081 3A when an incorrect passenger presence module is installed.

Verify that DTC B0081 3A is not set in the inflatable restraint sensing and diagnostic module. If DTC B0081 3A is set in the inflatable restraint sensing and diagnostic module Replace the K85 passenger presence module. If DTC B0081 3A is not set in the inflatable restraint sensing and diagnostic module
Verify that DTC B0081 is not set in the passenger presence module. If DTC is set in the passenger presence module Perform «Passenger Presence System Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems) . If the DTC is not set in the passenger presence module
All OK.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for passenger presence system or inflatable restraint sensing and diagnostic module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Left Front Impact Sensor High Signal	B0083 02	B0083 04, B0083 05	B0083 01	B0083 3A
Left Front Impact Sensor Low Reference	B0083 02	B0083 04, B0083 05	B0083 01	B0083 3A
Right Front Impact Sensor High Signal	B0084 02	B0084 04, B0084 05	B0084 01	B0084 3A
Right Front Impact Sensor Low Signal	B0084 02	B0084 04, B0084 05	B0084 01	B0084 3A
Left Front Side Impact Sensor High Signal	B0085 02	B0085 04, B0085 05	B0085 01	B0085 39
Left Front Side Impact Sensor Low Reference	B0085 02	B0085 04, B0085 05	B0085 01	B0085 39
Right Front Side Impact Sensor High Signal	B0086 02	B0086 04, B0086 05	B0086 01	B0086 39
Right Front Side Impact Sensor Low Reference	B0086 02	B0086 04, B0086 05	B0086 01	B0086 39
Left Rear Side Impact Sensor High Signal	B0087 02	B0087 04, B0087 05	B0087 01	B0087 39
Left Rear Side Impact Sensor Low Reference	B0087 02	B0087 04, B0087 05	B0087 01	B0087 39
Right Rear Side Impact Sensor High Signal	B0088 02	B0088 04, B0088 05	B0088 01	B0088 39
Right Rear Side Impact Sensor Low Reference	B0088 02	B0088 04, B0088 05	B0088 01	B0088 39

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) System performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the inflatable restraint sensing and diagnostic module. The impact sensors can assist in determining the severity of some frontal and side collisions. The inflatable restraint sensing and diagnostic module uses the input from the impact sensors to assist in determining the severity of a collision further supporting air bag deployment. If the inflatable restraint sensing and diagnostic module determines a deployment is warranted, the inflatable restraint sensing and diagnostic module will cause current to flow through the deployment loops deploying the air bags.

Ignition voltage is between 9-16 V.

Any of the following conditions exist for 10 seconds

B0083 01, B0084 01, B0085 01, B0086 01, B0087 01, B0088 01

The sensor has been shorted to voltage.

B0083 02, B0084 02, B0085 02, B0086 02, B0087 02, B0088 02

The sensor has been shorted to ground.
The sensor current is greater than 23 mA for greater than 5 milliseconds.

B0083 04, B0083 05, B0084 04, B0084 05, B0085 04, B0085 05, B0086 04, B0086 05, B0087 04, B0087 05, B0088 04, B0088 05

The sensor circuit is open.
The inflatable restraint sensing and diagnostic module has not received a message from the sensor for greater than 375 milliseconds.

B0083 39, B0084 39, B0085 39, B0086 39, B0087 39, B0088 39

The inflatable restraint sensing and diagnostic module has received a Not OK message from the sensor.
The inflatable restraint sensing and diagnostic module has not received a message.

B0083 3A, B0084 3A, B0085 3A, B0086 3A, B0087 3A, B0088 3A

The inflatable restraint sensing and diagnostic module has received identification message from the sensor, which does not match the identification stored in the inflatable restraint sensing and diagnostic module memory.
The inflatable restraint sensing and diagnostic module has reset the impact sensor twice without detecting the correct identification message.

B0083 71, B0084 71, B0085 71, B0086 71, B0087 71, B0088 71

The inflatable restraint sensing and diagnostic module has received invalid serial data from the sensor.

The inflatable restraint sensing and diagnostic module requests the instrument panel cluster to illuminate the AIR BAG indicator.

The condition for setting the DTC no longer exists.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.
An ignition cycle is required for the DTC to go from current to history.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Note. Refer to SIR Service Precautions . Inspect all terminals for damage or corrosion when disconnecting connectors. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Impact sensor Inflatable restraint sensing and diagnostic module Impact sensor wiring harness connector Inflatable restraint sensing and diagnostic module wiring harness connector The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly. Replace any CPA that is damaged or missing. If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the high resistance condition due to terminal fretting corrosion.

Verify that DTC B0083-B0088 symptom byte 3A, 39, or 71 is not set as current. If DTC B0083-B0088 symptom byte 3A, 39 or 71 is set as current Replace the appropriate B59 or B63 impact sensor. If DTC B0083-B0088 symptom byte 3A, 39 or 71 is not set as current
Verify that DTC B0083-B0088 symptom byte 01, 02, 04, or 05 is not set as current. If DTC B0083-B0088 symptom byte 01, 02, 04, or 05 is set as current Refer to Circuit/System Testing. If DTC B0083-B0088 symptom byte 01, 02, 04, 05 is not set as current
All OK.

Ignition OFF, disconnect the harness connector at the appropriate B59 or B63 impact sensor, wait 120 seconds.
Test for less than 10 ohms between the low reference circuit terminal 2 and ground. If 10 ohms or greater Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. Test for less than 2 ohms in the low reference circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the K36 inflatable restraint sensing and diagnostic module. If less than 10 ohms
Test for greater than 50k ohms between the signal circuit terminal 1 and ground. If 50k ohms or less Disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. Test for infinite resistance between the signal circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the K36 inflatable restraint sensing and diagnostic module. If greater than 50k ohms
Ignition ON, test for less than 1 volt between the signal circuit terminal 1 and ground. If 1 V or greater Ignition OFF, disconnect the X2 harness connector at the K36 inflatable restraint sensing and diagnostic module. Ignition ON, test for less than 1 V or greater between the signal circuit terminal 1 and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the K36 inflatable restraint sensing and diagnostic module. If less than 1 V
Ignition OFF, disconnect the X2 harness connector at the inflatable restraint sensing and diagnostic module.
Test for less than 2 ohms between the signal circuit end to end from the B59 or B63 impact sensor terminal 1 and the K36 inflatable restraint sensing and diagnostic module terminal listed below: Left front side impact sensor terminal 19 X2 Left front impact sensor terminal 23 X2 Right front side impact sensor terminal 22 X2 Right front impact sensor terminal 26 X2 Left rear side impact sensor terminal 27 X2 Right rear side impact sensor terminal 30 X2 If 2 ohms or greater Repair the open/high resistance in the circuit. If less than 2 ohms
Ignition OFF, reconnect all harness connectors, press in the CPA (if equipped) until an audible and/or tactile click is heard.
Ignition ON, clear DTCs. Operate the vehicle within the Conditions for Running the DTC.
Verify the DTC does not set. If the DTC sets Replace the B59 or B63 impact sensor. If the DTC does not set
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«Inflatable Restraint Rear Side Door Side Impact Sensor Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Front End Inflatable Restraint Discriminating Sensor Replacement»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for inflatable restraint sensing and diagnostic module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The inflatable restraint sensing and diagnostic module (SDM) stores a primary data key, which is a 4-digit number. When the ignition is turned ON, the SDM compares this information to the information stored in the body control module (BCM) via the serial data. If there is a mismatch between the information stored in the SDM and BCM, DTC B1001 will set.

System voltage is between 9-16 V.

The 4-digit Primary Data Key stored in the SDM does not match the 4 digits stored in the BCM.

The SDM requests the instrument cluster to illuminate the AIR BAG indicator.
The SDM disables all deployments.

The last 4-digit Primary Data Key in the SDM matches the last 4 digits stored in the BCM.

This DTC is an indication that an incorrect SDM is installed in the vehicle, or that the SDM and/or the BCM was replaced without reprogramming the BCM with the new information.
If the SDM was previously programmed and DTC B1001 is now set, the setup portion of program was not completed. Proceed to the Inflatable Restraint Sensing and Diagnostic Module Setup portion of the «Inflatable Restraint Sensing and Diagnostic Module Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__inflatable-restraint-sensing-and-diagnostic-module)

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify the scan tool SDM Primary Key Status paramater is Valid. If the SDM Primary Key Status parameter is Invalid Perform the SDM setup. Refer to «Inflatable Restraint Sensing and Diagnostic Module Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__inflatable-restraint-sensing-and-diagnostic-module) . If the SDM Primary Key Status parameter is Valid
All OK.

Perform the Diagnostic Repair Verification after completing the repair.

«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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 SDM evaluates the number of safety components installed and compares it to the number of components the SDM expects to see on the vehicle with its current calibration. If there is a mismatch between detected components and the components programmed with the SDM calibration, DTC B1019 will set. The components (if equipped) that the SDM will detect include inflatable restraint deployment loops, impact sensors, passenger presence system components, seat position sensors, disable switches, and seat belt switches.

Ignition voltage is between 9-16 V.

The setup for the SDM has not been completed and the SDM does not detect the correct number of sensors or deployment loops than is expected with this calibration.

The SDM requests the instrument cluster to illuminate the AIR BAG warning indicator.
The DTC must be cleared before running the setup SDM.
Air bag indicator will continue to flash until SDM setup procedure is complete.

The condition for setting the DTC is no longer present.
A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

The SDM scan tool deployment loop and impact sensor data will match what the SDM 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.

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 SDM.

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 SDM.

Schematic Reference

«Seat Belt Schematics»(/buick/regal/v-2009-2013/remont/restraints-control-systems/#seat-belt-system)
«SIR Schematics»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)

Connector End View Reference

Description and Operation

«Seat Belt System Description and Operation»(/buick/regal/v-2009-2013/remont/restraints-control-systems/#seat-belt-system)
«SIR System Description and Operation»(/buick/regal/v-2009-2013/remont/airbag/#supplemental-inflatable-restraint-system)

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Note. DTC B1019 can set after the SDM 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 SDM will set DTC B1019.

Ignition ON.
Verify no other SDM DTCs are set. If other SDM DTCs are set Diagnose those DTCs first. Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) If no other SDM DTCs are set
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 Verify the correct SDM calibration file is loaded in the SDM. If the SDM calibration file is correct and the vehicle contains an incorrect number of sensors, indentify which sensors are missing to make the vehicle match the SDM impact sensor calibration scan tool data list. If the calibration file is incorrect Reprogram the SDM. Refer to «Inflatable Restraint Sensing and Diagnostic Module Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__inflatable-restraint-sensing-and-diagnostic-module) If the number of impact sensors match
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 Verify the correct SDM calibration file is loaded in the SDM. If the SDM calibration file is correct and the vehicle contains an incorrect number of loops, indentify which deployment loops are missing to make the vehicle match the SDM impact sensor calibration scan tool data list. If the calibration file is incorrect Reprogram the SDM. Refer to «Inflatable Restraint Sensing and Diagnostic Module Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__inflatable-restraint-sensing-and-diagnostic-module) If the number of enabled deployment loops match
Replace the K36 inflatable restraint sensing and diagnostic module.

Perform the Diagnostic Repair Verification after completing the repair.

«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, programming and setup

Symptoms - SIR

Note. Complete the following steps before using the symptom tables: Perform Diagnostic System Check - Vehicle before using the symptom tables in order to verify that all of the following are true: There are no DTCs set. The inflatable restraint sensing and diagnostic module (SDM) can communicate via the serial data link. Review the SIR system description and operation in order to familiarize yourself with the system functions. Refer to SIR System Description and Operation .

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the SIR system. Refer to «Checking Aftermarket Accessories»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to Air Bag Indicator Circuit Malfunction (Passenger) , Air Bag Indicator Circuit Malfunction (Driver) in order to diagnose the symptom.

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, during the bulb check, the driver air bag indicator will flash, and then turn OFF after the bulb check. The inflatable restraint sensing and diagnostic module (SDM) performs diagnostic tests on the SIR system during the bulb check. If any malfunction exists the inflatable restraint sensing and diagnostic module will request the instrument cluster to illuminate the air bag indicator steady, via serial data. If a preexisting malfunction exists, the air bag indicator will illuminate steady immediately after the ignition is turned ON. If the ignition 1 voltage is outside of the normal operating voltage range of 9-16 V, the inflatable restraint sensing and diagnostic module will command the instrument cluster to illuminate the air bag indicator ON, even with no DTCs present, and then disable all deployment loops.

A DTC B1370 may set if the ignition 1 circuit is outside the 9-16 V range.
A flashing driver air bag indicator is displayed if the inflatable restraint sensing and diagnostic module was programmed but did not fully complete the programming. For a flashing driver airbag indicator, refer to «Inflatable Restraint Sensing and Diagnostic Module Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__inflatable-restraint-sensing-and-diagnostic-module) .

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

«Circuit Testing»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
«Connector Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Verify inflatable restraint sensing and diagnostic module DTCs are not set. If inflatable restraint sensing and diagnostic module DTCs are set Refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) . If inflatable restraint sensing and diagnostic module DTCs are not set
Verify the driver air bag indicator is not flashing. If the indicator is flashing Refer to «Inflatable Restraint Sensing and Diagnostic Module Programming and Setup»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__inflatable-restraint-sensing-and-diagnostic-module) If the indicator is not flashing
Verify the air bag indicators turn ON and OFF when commanding the Instrument Cluster All Indicators ON and OFF with a scan tool. If the air bag indicator does not turn ON or OFF Replace the P16 instrument cluster. If the air bag indicator does turn ON or OFF
Replace the K36 inflatable restraint sensing and diagnostic module.

Perform the Diagnostic Repair Verification after completing the repair.

«SIR/SRS Wiring Repairs»(/buick/regal/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Control Module References»(/buick/regal/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for instrument cluster or inflatable restraint sensing and diagnostic module replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/buick/regal/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Passenger Air Bag OFF Indicator Control	2	2*	4
Passenger Air Bag ON Indicator Control	3	3*	5
Passenger Air Bag Disable Indicator Ground		1	1
1. Both indicators always OFF 2. The OFF indicator will not illuminate 3. The ON indicator will not illuminate 4. The OFF indictor always ON 5. The ON indicator always ON * High resistance may cause the appropriate indicator to illuminate less bright than normal

The passenger air bag ON/OFF indicators are used to notify the driver when the passenger presence system has enabled or disabled the passenger instrument panel air bag. When the ignition is turned ON, the ignition voltage is supplied to the passenger presence module. When the inflatable restraint sensing and diagnostic module (SDM) receives the appropriate serial data message from the passenger presence module the SDM will then provide voltage to the appropriate indicator.

Schematic Reference

Connector End View Reference

Description and Operation