Supplemental Inflatable Restraint System Cadillac STS I

Fastener Tightening Specifications

Fastener Tightening Specifications

SIR Schematic Icons

SIR Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs. IMPORTANT: In order to prevent accidental deployment, the shorting bars close in order to short the connectors when the connectors are separated. Twisted-pair wires provide an effective shield that helps protect sensitive electronic components from electrical interference. If the wires were covered with shielding, install new shielding. In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown : The wires must be twisted a minimum of 9 turns per 31 cm (12 in) as measured anywhere along the length of the wires The outside diameter of the twisted wires must not exceed 6.0 mm (0.25 in)

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SIR Zone Identification Views

The SIR Zone Identification Views shown below illustrate the approximate location of all SIR components available for the vehicle. This will assist in determining the appropriate SIR Disabling and Enabling Zones for a given service procedure, refer to SIR Disabling and Enabling Zones .

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SIR Connector End Views

Inflatable Restraint Front End Sensor - Left Connector End Connector Part Information OEM: 15356722 Service: 15306405 2-Way F GT 150 Series Sealed 4.0 (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A TN/OG 5045 Left Front Discriminating Sensor Low Reference B YE 1834 SIR Forward Sensor Signal (1)

Inflatable Restraint Front End Sensor - Right Connector End Connector Part Information OEM: 15356722 Service: 15306405 2-Way F GT 150 Series Sealed 4.0 (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A D-GN 1409 Right Front Discriminating Sensor Signal B GY 5600 Right Front Discriminating Sensor Low Reference

Inflatable Restraint I/P Module Connector End Connector Part Information OEM: 15336476 Service: 15306363 4-Way M Metri-Pack 280 Series (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A1 WH/BK 1403 Passenger I/P Module High Control A2 D-GN/WH 1404 Passenger I/P Module Low Control B1 GY 3027 Passenger I/P Module Stage 2 High Control B2 PU 3026 Passenger I/P Module Stage 2 Low Control

Inflatable Restraint Roof Rail Module - Left Connector End Connector Part Information OEM: C252912053 Service: 2-Way F Amphenol (YE/PU) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 PU/WH 5019 Left Front Head Curtain Module High Control 2 PK 5020 Left Front Head Curtain Module Low Control

Inflatable Restraint Roof Rail Module - Right Connector End Connector Part Information OEM: C252912053 Service: 2-Way F Amphenol (YE/PU) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 YE/BK 5021 Right Front Head Curtain Module High Control 2 WH/BK 5022 Right Front Head Curtain Module Low Control

Inflatable Restraint Side Impact Module and Seat Belt Pretensioner - LF Connector End Connector Part Information OEM: 15304649 Service: 15306061 6-Way M GT 150/280 Series (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A TN/WH 2118 Driver Seat Belt Pretensioner High Control B - - Not Used C D-GN 2105 Left Side Impact Module High Control D BN 2106 Left Side Impact Module Low Control E - - Not Used F OG/BK 2119 Driver Seat Belt Pretensioner Low Control

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Inflatable Restraint Side Impact Module and Seat Belt Pretensioner - RF Connector End Connector Part Information OEM: 15304649 Service: 15306061 6-Way M GT 150/280 Series (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A L-GN 2116 Passenger Seat Belt Pretensioner High Control B - - Not Used C D-BU 2104 Right Side Impact Module Low Control D GY 2103 Right Side Impact Module High Control E - - Not Used F OG 2117 Passenger Seat Belt Pretensioner Low Control

Inflatable Restraint Side Impact Sensor (SIS) - Left Connector End Connector Part Information OEM: 15356724 Service: 15306418 2-Way F GT 150 Series (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A WH 2132 Left Front Side Impact Sensing Module Signal B YE 2131 Left Front Side Impact Sensing Module Supply Voltage

Inflatable Restraint Side Impact Sensor (SIS) - Right Connector End Connector Part Information OEM: 15356724 Service: 15306418 2-Way F GT 150 Series (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A D-GN 2134 Right Front Side Impact Sensing Module Signal B TN 2133 Right Front Side Impact Sensing Module Supply Voltage

Inflatable Restraint Steering Wheel Module Connector End Connector Part Information OEM: 15336476 Service: 15306363 4-Way M Metri-Pack 280 Series (YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function A1 TN 3021 Steering Wheel Module Stage 1 High Control A2 BN 3020 Steering Wheel Module Stage 1 Low Control B1 WH 3023 Steering Wheel Module Stage 2 High Control B2 PK 3022 Steering Wheel Module Stage 2 Low Control

Seat Belt Retractor - LF Connector End Connector Part Information OEM: 7283-7623-30 Service: 2-Way F Yazaki (BK) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 BN 41 Run Ignition 3 Voltage 2 BK 5611 Driver Seat Belt Tension Sensor Signal

Seat Belt Retractor - RF Connector End Connector Part Information OEM: 7283-7623-30 Service: 2-Way F Yazaki (BK) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 BN 41 Run Ignition 3 Voltage 2 BK/WH 5611 Passenger Seat Belt Tension Sensor Signal

Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector End Connector Part Information OEM: 638595-3 Service: 60-Way F GET (RD/YE) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 RD/WH 940 Backup Lamp - Feed 2 D-GN 5060 Low Speed GMLAN Serial Data 3 PK 5017 Driver Seat Belt Switch Low Reference 4 TN/WH 238 Driver Seat Belt Switch Signal 5 - - Not Used 6 TN/WH 238 Driver Seat Belt Switch Signal 7 - - Not Used 8 PK 5020 Left Front Head Curtain Module Low Control 9 PU/WH 5019 Left Front Head Curtain Module High Control 10 YE/BK 5021 Right Front Head Curtain Module High Control 11 WH/BK 5022 Right Front Head Curtain Module Low Control 12 PU 3026 Passenger I/P Module Stage 2 Low Control 13 GY 3027 Passenger I/P Module Stage 2 High Control 14 TN 3021 Steering Wheel Module Stage 1 High Control 15 BN 3020 Steering Wheel Module Stage 1 Low Control 16 PK 3022 Steering Wheel Module Stage 2 Low Control 17 WH 3023 Steering Wheel Module Stage 2 High Control 18 WH/BK 1403 Passenger I/P Module High Control 19 D-GN/WH 1404 Passenger I/P Module Low Control 20 GY 2103 Right Side Impact Module High Control 21 D-BU 2104 Right Side Impact Module Low Control 22 D-GN 2105 Left Side Impact Module High Control 23 BN 2106 Left Side Impact Module Low Control 24-30 - - Not Used 31 BK/WH 1751 Ground 32 D-GN 5060 Low Speed GMLAN Serial Data 33 PK 1139 Run/Crank Ignition 1 Voltage 34-35 - - Not Used 36 D-GN 1409 Right Front Discriminating Sensor Signal 37 GY 5600 Right Front Discriminating Sensor Low Reference 38 YE 1834 SIR Forward Sensor Signal (1) 39 TN/OG 5045 Left Front Discriminating Sensor Low Reference 40-45 - - Not Used 46 YE 2131 Left Front Side Impact Sensing Module Supply Voltage 47 WH 2132 Left Front Side Impact Sensing Module Signal 48 D-GN 2134 Right Front Side Impact Sensing Module Signal 49 TN 2133 Right Front Side Impact Sensing Module Supply Voltage 50-51 - - Not Used 52 L-GN 2116 Passenger Seat Belt Pretensioner High Control 53 OG 2117 Passenger Seat Belt Pretensioner Low Control 54-55 - - Not Used 56 TN/WH 2118 Driver Seat Belt Pretensioner High Control 57 OG/BK 2119 Driver Seat Belt Pretensioner Low Control 58-60 - - Not Used

Diagnostic Starting Point - SIR

Begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Vehicle System Check will provide the following information

1. The identification of the control module(s) which commands the system
2. The ability of the control module(s) to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of Vehicle System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Scan Tool Data List

The SIR Scan Tool Data List contains all the restraint system related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The column, "Data List," indicates the location of the parameter within the scan tool menu selections.

Use the SIR Scan Tool Data List as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with the SIR Diagnostic System Check. Use the SIR Scan Tool Data List after the following are determined

1. There is no published DTC procedure nor published symptom procedure for the customer concern.
2. The DTC or symptom diagnostic procedure indicated by the diagnostic system check does not resolve the customer concern.

The Typical Data Values are obtained from a properly operating vehicle under the conditions specified in the first row of the Scan Tool Data List table. Comparison of the parameter values from the suspect vehicle with the Typical Data Values may reveal the source of the customer concern.

SIR Scan Tool Data List

Scan Tool Data Definitions

The SIR scan tool data definitions contain a brief description of all SIR related parameters available on the scan tool. The parameters that are available on the scan tool are listed below in alphabetical order.

Circuit Description

The driver frontal deployment loop consists of the following components

1. A dual stage inflatable restraint steering wheel module
2. The inflatable restraint steering wheel module coil
3. The steering wheel module high circuits for both stages 1 and 2
4. The steering wheel module low circuits for both stages 1 and 2

There are 2 shorting bars used within the steering wheel module coil connector which will short together both steering wheel module stage 1 high circuit and steering wheel module stage 1 low circuit and both steering wheel module stage 2 high circuit and steering wheel module stage 2 low circuit when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing. During a 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 the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

DTC Descriptors

This diagnostic procedure supports the following DTCs

1. DTC B0012 Driver Frontal Deployment Loop Stage 1
2. DTC B0013 Driver Frontal Deployment Loop Stage 2

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0012 or B0013

Conditions for Running the DTC

Ignition voltage is within the normal operating voltage range.

B0012 01 stage 1 or B0013 01 stage 2

The steering wheel module high and/or low circuit is short to voltage for 120 milliseconds.

B0012 02 stage 1 or B0013 02 stage 2

The steering wheel module high and/or low circuit is short to ground for 120 milliseconds.

B0012 04 stage 1 or B0013 04 stage 2

The steering wheel module high and/or low circuit is open for 120 milliseconds.

B0012 0D stage 1 or B0013 0D stage 2

The steering wheel module deployment loop resistance is more than 5.1 ohms for 120 milliseconds.

B0012 0E stage 1 or B0013 0E stage 2

The steering wheel module deployment loop resistance is less than 1.3 ohms for 120 milliseconds.

Action Taken When the DTC Sets

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

Conditions for Clearing the DTC

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

Diagnostic Aids

The following are possible causes of the malfunction

1. A short between the steering wheel module stage 1 or stage 2, high and low circuits
2. An open or a high resistance in the steering wheel module stage 1 or stage 2, high or low circuits
3. A short to ground or a short to voltage in the steering wheel module stage 1 or stage 2, high or low circuits
4. The steering wheel module coil connector
5. The SDM connector
6. A malfunctioning steering wheel module
7. A malfunctioning steering wheel module coil
8. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 5: Tests to see if the malfunction is caused by the steering wheel module or by the steering wheel module coil.
2. 7: Tests to see what DTCs are present. If DTC B0012 01 or B0013 01 is present, test the steering wheel module for a short to battery voltage on the high and low circuits in stage 1 or stage 2. If DTC B0012 02 or B0013 02 is present, test the steering wheel module for a short to ground on the high and low circuits in stage 1 or stage 2. If DTC B0012 04, 0D, 0E or B0013 04, 0D, 0E is present, test the high and low circuits for an open circuit and for high or low resistance in stage 1 or stage 2.

DTC B0012 or B0013

The driver side deployment loop consists of the following components

1. An inflatable restraint side impact module - LF
2. The inflatable restraint side impact module wiring harness
3. The side impact module - LF high circuits
4. The side impact module - LF low circuits

A shorting bar is used within the side impact module - LF connector. The shorting bar will short together the side impact module - LF high circuit, and the side impact module - LF low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during servicing. 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. This flow of current will deploy the side impact module - LF. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory.

DTC Descriptor

This diagnostic procedure supports the following DTC

DTC B0014 Left Front Side Deployment Loop

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0014

Ignition voltage is within the normal operating voltage range.

B0014 01

The side impact module - LF high and/or low circuit is short to voltage for 120 milliseconds.

B0014 02

The side impact module - LF high and/or low circuit is short to ground for 120 milliseconds.

B0014 04

The side impact module - LF high and/or low circuit is open for 120 milliseconds.

B0014 0D

The side impact module - LF deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0014 0E

The side impact module - LF deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

Conditions for Clearing the MIL/DTC

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the side impact module - LF high and low circuits
2. An open or a high resistance in the side impact module - LF high or low circuits
3. A short to ground or a short to voltage in the side impact module - LF high or low circuits
4. The side impact module - LF connector
5. The SDM connector
6. A malfunctioning side impact module wiring harness
7. A malfunctioning side impact module - LF
8. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 5: Tests to see if the malfunction is caused by the side impact module - LF or by the side impact - LF wiring harness.
2. 7: Tests to see what DTCs are present. If DTC B0014 01 is present, test the side impact module - LF for a short to battery voltage on the high and low circuits. If DTC B0014 02 is present, test the side impact module - LF for a short to ground on the high and low circuits. If DTC B0014 04, 0D, 0E is present, test the side impact module - LF test the high and low circuits for an open circuit and for high or low resistance.

DTC B0014

The driver seat belt pretensioner loop consists of the following components

1. An inflatable restraint seat belt pretensioner
2. The seat belt pretensioner - LF high circuit
3. The seat belt pretensioner - LF low circuit

A shorting bar used within the seat belt pretensioner connector which will short together both seat belt pretensioner high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the pretensioner during servicing. During a 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 the seat belt pretensioner. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

This diagnostic procedure supports the following DTC

DTC B0015 Left Front Seat Belt Pretensioner Deployment Loop

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0015

Ignition voltage is within the normal operating voltage range.

B0015 01

The seat belt pretensioner - LF high and/or low circuit is short to voltage for 120 milliseconds.

B0015 02

The seat belt pretensioner - LF high and/or low circuit is short to ground for 120 milliseconds.

B0015 04

The seat belt pretensioner - LF high and/or low circuit is open for 120 milliseconds.

B0015 0D

The seat belt pretensioner - LF deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0015 0E

The seat belt pretensioner - LF deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the seat belt pretensioner - LF high and low circuits
2. An open or a high resistance in the seat belt pretensioner - LF high or low circuits
3. A short to ground or a short to voltage in the seat belt pretensioner - LF high or low circuits
4. The seat belt pretensioner - LF connector
5. The SDM connector
6. A malfunctioning seat belt pretensioner
7. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 4: Tests to see if the malfunction is caused by the seat belt pretensioner - LF.
2. 6: Tests to see what DTCs are present. If DTC B0015 01 is present, test the seat belt pretensioner - LF for a short to battery voltage on the high and low circuits. If DTC B0015 02 is present, test the seat belt pretensioner - LF high and low circuits for a short to ground. If DTC B0015 04, 0D, 0E is present, test the seat belt pretensioner - LF high and low circuits for an open circuit and for high or low resistance.

DTC B0015

The passenger roof rail deployment loop consists of the following components

1. An inflatable restraint left roof rail module
2. The roof rail module - left high circuit
3. The roof rail module - left low circuit

A shorting bar used within the roof rail module connector which will short together both roof rail module - left high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing. 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 the roof side rail module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

This diagnostic procedure supports the following DTC

DTC B0016 Left Roof Rail Deployment Loop

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0016

Ignition voltage is within the normal operating voltage range.

B0016 01

The roof rail module - left high and/or low circuit is short to voltage for 120 milliseconds.

B0016 02

The roof rail module - left high and/or low circuit is short to ground for 120 milliseconds.

B0016 04

The roof rail module - left high and/or low circuit is open for 120 milliseconds.

B0016 0D

The roof rail module - left deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0016 0E

The roof rail module - left deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the roof rail module - left high and low circuits
2. An open or a high resistance in the roof rail module - left high or low circuits
3. A short to ground or a short to voltage in the roof rail module - left high or low circuits
4. The roof rail module - left connector
5. The SDM connector
6. A malfunctioning roof rail module - left
7. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 4: Tests to see if the malfunction is caused by the roof rail module - left.
2. 6: Tests to see what DTCs are present. If DTC B0016 01 is present, test the roof rail module - left for a short to battery voltage on the high and low circuits. If DTC B0016 02 is present, test the roof rail module - left for a short to ground on the high and low circuits. If DTC B0016 04, 0D, 0E is present, test the roof rail module - left test the high and low circuits for an open circuit and for high or low resistance.

DTC B0016

The passenger frontal deployment loop consists of the following components

1. A dual stage inflatable restraint instrument panel (I/P) module
2. The I/P module high circuits for both stages 1 and 2
3. The I/P module low circuits for both stages 1 and 2

There are 2 shorting bars used within the I/P module connector which will short together both I/P module stage 1 high and low circuits and both I/P module stage 2 high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing. During a 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 the I/P module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

This diagnostic procedure supports the following DTCs

1. DTC B0019 Passenger Frontal Deployment Loop Stage 1
2. DTC B0020 Passenger Frontal Deployment Loop Stage 2

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0019 or B0020

Ignition voltage is within the normal operating voltage range.

B0019 01 stage 1 or B0020 01 stage 2

The I/P module high and/or low circuit is short to voltage for 120 milliseconds.

B0019 02 stage 1 or B0020 02 stage 2

The I/P module high and/or low circuit is short to ground for 120 milliseconds.

B0019 04 stage 1 or B0020 04 stage 2

The I/P module high and/or low circuit is open for 120 milliseconds.

B0019 0D stage 1 or B0020 0D stage 2

The I/P module deployment loop resistance is more than 5.1 ohms for 120 milliseconds.

B0019 0E stage 1 or B0020 0E stage 2

The I/P module deployment loop resistance is less than 1.3 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the I/P module stage 1 or stage 2, high and low circuits
2. An open or a high resistance in the I/P module stage 1 or stage 2, high or low circuits
3. A short to ground or a short to voltage in the I/P module stage 1 or stage 2, high or low circuits
4. The I/P module connector
5. The SDM connector
6. A malfunctioning I/P module
7. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 4: Tests to see if the malfunction is caused by the I/P module.
2. 6: If DTC B0019 01 or B0020 01 is present, test the I/P module for a short to battery voltage on the high and low circuits in stage 1 or stage 2. If DTC B0019 02 or B0020 02 is present, test the I/P module for a short to ground on the high and low circuits in stage 1 or stage 2. If DTC B0019 04, 0D, 0E or B0020 04, 0D, 0E is present, test the high and low circuits for an open circuit and for high or low resistance in stage 1 or stage 2.

DTC B0019 or B0020

The driver side deployment loop consists of the following components

1. An inflatable restraint side impact module - RF
2. The inflatable restraint side impact module wiring harness
3. The side impact module - RF high circuits
4. The side impact module - RF low circuits

A shorting bar is used within the side impact module - RF connector. The shorting bar will short together the side impact module - RF high circuit, and the side impact module - RF low circuit when the connector is disconnected. This helps prevent unwanted deployment of the inflator module during servicing. 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. This flow of current will deploy the side impact module - RF. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory.

This diagnostic procedure supports the following DTC

DTC B0021 Right Front Side Deployment Loop

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0021

Ignition voltage is within the normal operating voltage range.

B0021 01

The side impact module - RF high and/or low circuit is short to voltage for 120 milliseconds.

B0021 02

The side impact module - RF high and/or low circuit is short to ground for 120 milliseconds.

B0021 04

The side impact module - RF high and/or low circuit is open for 120 milliseconds.

B0021 0D

The side impact module - RF deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0021 0E

The side impact module - RF deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the side impact module - RF high and low circuits
2. An open or a high resistance in the side impact module - RF high or low circuits
3. A short to ground or a short to voltage in the side impact module - RF high or low circuits
4. The side impact module - RF connector
5. The SDM connector
6. A malfunctioning side impact module wiring harness
7. A malfunctioning side impact module - RF
8. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 5: Tests to see if the malfunction is caused by the side impact module - RF or by the side impact - RF wiring harness.
2. 7: Tests to see what DTCs are present. If DTC B0021 01 is present, test the side impact module - RF for a short to battery voltage on the high and low circuits. If DTC B0021 02 is present, test the side impact module - RF for a short to ground on the high and low circuits. If DTC B0021 04, 0D, 0E is present, test the side impact module - RF test the high and low circuits for an open circuit and for high or low resistance.

DTC B0021

The passenger seat belt pretensioner loop consists of the following components

1. An inflatable restraint seat belt pretensioner
2. The seat belt pretensioner - RF high circuit
3. The seat belt pretensioner - RF low circuit

A shorting bar used within the seat belt pretensioner connector which will short together both seat belt pretensioner high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the pretensioner during servicing. During a 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 the seat belt pretensioner. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

This diagnostic procedure supports the following DTC

DTC B0022 Right Front Seat Belt Pretensioner Deployment Loop

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0022

Ignition voltage is within the normal operating voltage range.

B0022 01

The seat belt pretensioner - RF high and/or low circuit is short to voltage for 120 milliseconds.

B0022 02

The seat belt pretensioner - RF high and/or low circuit is short to ground for 120 milliseconds.

B0022 04

The seat belt pretensioner - RF high and/or low circuit is open for 120 milliseconds.

B0022 0D

The seat belt pretensioner - RF deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0022 0E

The seat belt pretensioner - RF deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the seat belt pretensioner - RF high and low circuits
2. An open or a high resistance in the seat belt pretensioner - RF high or low circuits
3. A short to ground or a short to voltage in the seat belt pretensioner - RF high or low circuits
4. The seat belt pretensioner - RF connector
5. The SDM connector
6. A malfunctioning seat belt pretensioner
7. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 4: Tests to see if the malfunction is caused by the seat belt pretensioner - RF.
2. 6: Tests to see what DTCs are present. If DTC B0022 01 is present, test the seat belt pretensioner - RF for a short to battery voltage on the high and low circuits. If DTC B0022 02 is present, test the seat belt pretensioner - RF high and low circuits for a short to ground. If DTC B0022 04, 0D, 0E is present, test the seat belt pretensioner - RF high and low circuits for an open circuit and for high or low resistance.

DTC B0022

The passenger roof rail deployment loop consists of the following components

1. An inflatable restraint right roof rail module
2. The roof rail module - right high circuit
3. The roof rail module - right low circuit

A shorting bar used within the roof rail module connector which will short together both roof rail module - right high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing. 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 the roof side rail module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a diagnostic trouble code (DTC) will be stored in memory.

This diagnostic procedure supports the following DTC

DTC B0023 Right Roof Rail Deployment Loop

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0023

Ignition voltage is within the normal operating voltage range.

B0023 01

The roof rail module - right high and/or low circuit is short to voltage for 120 milliseconds.

B0023 02

The roof rail module - right high and/or low circuit is short to ground for 120 milliseconds.

B0023 04

The roof rail module - right high and/or low circuit is open for 120 milliseconds.

B0023 0D

The roof rail module - right deployment loop resistance is more than 3.9 ohms for 120 milliseconds.

B0023 0E

The roof rail module - right deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

The SDM commands the AIR BAG indicator ON via GMLAN serial data.

1. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are possible causes of the malfunction

1. A short between the roof rail module - right high and low circuits
2. An open or a high resistance in the roof rail module - right high or low circuits
3. A short to ground or a short to voltage in the roof rail module - right high or low circuits
4. The roof rail module - right connector
5. The SDM connector
6. A malfunctioning roof rail module - right
7. A malfunctioning SDM

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 4: Tests to see if the malfunction is caused by the roof rail module - right.
2. 6: Tests to see what DTCs are present. If DTC B0023 01 is present, test the roof rail module - right for a short to battery voltage on the high and low circuits. If DTC B0023 02 is present, test the roof rail module - right for a short to ground on the high and low circuits. If DTC B0023 04, 0D, 0E is present, test the roof rail module - right test the high and low circuits for an open circuit and for high or low resistance.

DTC B0023

The inflatable restraint sensing and diagnostic module (SDM) contains a sensing device that converts vehicle velocity changes into an electrical signal. The SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the deployment loops, deploying the air bags and/or pretensioners causing DTC B0052 to set.

This diagnostic procedure supports the following DTC

DTC B0052 Deployment Commanded

Ignition 1 voltage must be within the normal operating range.

Conditions for Setting the DTC

The DTC will set if one of the following conditions occurs

1. The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules and/or pretensioners.
2. The SDM detects a side impact of sufficient force to warrant deployment of a roof rail module.

1. The SDM commands the AIR BAG warning lamp ON via GMLAN serial data.
2. The SDM records crash data.

DTC B0052 can be cleared if the following conditions are met.

1. Three consecutive seat belt pretensioner deployment events have not occurred.
2. One frontal or side air bag deployment has not occurred.
3. The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
4. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

DTC B0052 becomes a latched code after 3 consecutive pretensioner deployments or 1 frontal or side air bag deployment. You cannot clear a latched code. Replace the SDM after following the instructions in the diagnostic table.

The seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment. The SDM is capable of sustaining 3 pretensioner deployment events, or 1 frontal or side deployment event. After the maximum number of deployments has occurred, DTC B0052 becomes a latched code, which cannot be cleared.

DTC B0052

The inflatable restraint sensing and diagnostic module (SDM) contains a sensing device that converts vehicle velocity and convert this to a electrical signal. The SDM processes the generated electrical signal and compares the signal to a value stored in memory. If the generated signal exceeds the stored value, the SDM performs additional signal processing and compares the generated signals to signals stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the air bags. DTC B0053 will set instead of a DTC B0052 when a deployment occurs while an inflator circuit fault is present that may result in a non-deployment situation in one or more inflator modules.

This diagnostic procedure supports the following DTC

DTC B0053 Deployment Commanded with Loop DTCs Present

Ignition 1 voltage must be present.

SDM commands inflators deployment with loop faults present.

1. The SDM sets DTC B0052.
2. The SDM sets DTC B0053.
3. The SDM commands the AIR BAG warning lamp ON via GMLAN serial data.
4. The SDM records crash data.

DTC B0053 is a latched code. You cannot clear a latched code. Replace the SDM after following the instructions in the diagnostic table.

When DTC B0053 is accompanied by additional DTCs, other than B0052, repair the malfunction causing the other DTCs before replacing SDM.

DTC B0053

The inflatable restraint sensing and diagnostic module (SDM) contains a sensing device that converts vehicle velocity changes into an electrical signal. The SDM compares this electrical signal to a value stored in memory. When the generated signal exceeds the stored value, the SDM performs additional signal processing and compares the generated signals to values stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the side air bags and causing DTC B0055 to set.

This DTC is set when the SDM has commanded an air bag deployment with no faults present.

This diagnostic procedure supports the following DTC

DTC B0055 Side Air Bag Deployment Commanded

Ignition 1 voltage must be present.

Ignition voltage must be present and the SDM must have commanded an air bag deployment.

1. The SDM sets a DTC B0055.
2. The SDM commands the AIR BAG warning lamp ON via GMLAN serial data.
3. The SDM records crash data.

DTC B0055 is a latched code. You cannot clear a latched code. Replace the SDM after following the instructions in the diagnostic table.

DTC B0055

The inflatable restraint front end sensor also known as the electronic frontal sensor (EFS) utilizes a unidirectional 2-wire circuit. The front end sensor modulates current on the interface to send ID, State of Health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a ground for the front end sensor. When the ignition is turned on and input power from the SDM is first detected, the front end sensor responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The front end sensor continually communicates status messages to the SDM, which determines if a fault is present in the front end sensor circuit. When a fault is detected, the SDM may reset the front end sensor up to two times by removing and reapplying power to it. If the fault is still present, the SDM will set a diagnostic trouble code (DTC).

This diagnostic procedure supports the following DTCs

1. DTC B0083 Front End Sensor 1 (Left)
2. DTC B0084 Front End Sensor 2 (Right)

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0083 or B0084

Ignition 1 voltage is within the normal operating voltage range.

All of the following conditions exist for 2.5 seconds

B0083 01 or B0084 01

1. If 1 or both front end sensor(s) has been shorted to voltage
2. The SDM has not received a message from 1 or both front end sensor(s) for more than 375 milliseconds.

B0083 02 or B0084 02

1. If 1 or both front end sensor(s) has been shorted to ground
2. If 1 or both front end sensor(s) current has been above 23 mA for longer than 5 milliseconds.

B0083 04 or B0084 04

If 1 or both front end sensor(s) circuit is open

B0083 39 or B0084 39

1. The SDM has received a NOK message from 1 or both front end sensor(s).
2. The SDM has not received a message from 1 or both front end sensor(s).

B0083 71 or B0084 71

The SDM has received invalid serial data from 1 or both front end sensor(s).

B0083 0F or B0084 0F

The SDM has received erratic messages from 1 or both front end sensor(s).

B0083 3A or B0084 3A

1. The SDM has received an ID message from 1 or both front end sensor(s) which does not match the ID stored in the SDM memory.
2. The SDM has reset 1 or both front end sensor(s) twice without detecting the correct ID message.

The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.

1. The DTC will clear when the condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are conditions that may cause the malfunction

1. An open in 1 or both front end sensor circuits
2. A short to ground or voltage in 1 or both front end sensor circuits
3. High or low resistance in 1 or both front end sensor circuits
4. Improper front end sensor installed on vehicle
5. An internal failure in 1 or both front end sensor(s)

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 7: Tests the front end sensor signal and front end sensor voltage circuits for high or low resistance or open.
2. 8: Tests between the front end sensor signal and front end sensor voltage circuits for continuity.
3. 9: Tests the front end sensor signal and front end sensor voltage circuits for a short to voltage or ground.

DTC B0083 or B0084

The inflatable restraint side impact sensor (SIS) utilizes a unidirectional 2-wire circuit. The SIS modulates current on the interface to send ID, State of Health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a ground for the SIS. When the ignition is turned on and input power from the SDM is first detected, the SIS responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The SIS continually communicates status messages to the SDM, which determines if a fault is present in the SIS circuit. When a fault is detected, the SDM resets the SIS twice by removing and reapplying power to it. If the fault is still present, the SDM will set a diagnostic trouble code (DTC).

This diagnostic procedure supports the following DTC

DTC B0085 LF/Driver Side Impact Sensor

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0085

Ignition 1 voltage is within the normal operating voltage range.

All of the following conditions exist for 2.5 seconds

B0085 01

1. The SIS has been shorted to voltage.
2. The SDM has not received a message from the SIS for more than 375 milliseconds.

B0085 02

1. The SIS has been shorted to ground.
2. The SIS current has been above 23 mA for longer than 5 milliseconds.

B0085 04

The SIS circuit is open.

B0085 39

1. The SDM has received a NOK message from the SIS.
2. The SDM has not received a message.

B0085 71

The SDM has received invalid serial data from the SIS.

B0085 0F

The SDM has received erratic messages from the SIS.

B0085 3A

1. The SDM has received an ID message from the SIS which does not match the ID stored in the SDM memory.
2. The SDM has reset the SIS twice without detecting the correct ID message.

The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.

1. The DTC will clear when the condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are conditions that may cause the malfunction

1. An open in the SIS circuit
2. A short to ground or voltage in the SIS circuit
3. High or low resistance in the SIS circuit
4. Improper SIS installed on vehicle
5. An internal failure in the SIS

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 7: This step tests the SIS signal and SIS voltage circuits for an open or high resistance.
2. 8: This step tests between the SIS signal and SIS voltage circuits for continuity.
3. 9: This step tests the SIS signal and SIS voltage circuits for a short to voltage.

DTC B0085

The inflatable restraint side impact sensor (SIS) utilizes a unidirectional 2-wire circuit. The SIS modulates current on the interface to send ID, State of Health, and deployment commands to the inflatable restraint sensing and diagnostic module (SDM). The SDM serves as a power source and a ground for the SIS. When the ignition is turned on and input power from the SDM is first detected, the SIS responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The SIS continually communicates status messages to the SDM, which determines if a fault is present in the SIS circuit. When a fault is detected, the SDM resets the SIS twice by removing and reapplying power to it. If the fault is still present, the SDM will set a diagnostic trouble code (DTC).

This diagnostic procedure supports the following DTC

DTC B0086 RF/Passenger Side Impact Sensor

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B0086

Ignition 1 voltage is within the normal operating voltage range.

All of the following conditions exist for 2.5 seconds

B0086 01

1. The SIS has been shorted to voltage.
2. The SDM has not received a message from the SIS for more than 375 milliseconds.

B0086 02

1. The SIS has been shorted to ground.
2. The SIS current has been above 23 mA for longer than 5 milliseconds.

B0086 04

The SIS circuit is open.

B0086 39

1. The SDM has received a NOK message from the SIS.
2. The SDM has not received a message.

B0086 71

The SDM has received invalid serial data from the SIS.

B0086 0F

The SDM has received erratic messages from the SIS.

B0086 3A

1. The SDM has received an ID message from the SIS which does not match the ID stored in the SDM memory.
2. The SDM has reset the SIS twice without detecting the correct ID message.

The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.

1. The DTC will clear when the condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
2. A history DTC will clear once 255 malfunction free ignition cycles have occurred.

The following are conditions that may cause the malfunction

1. An open in the SIS circuit
2. A short to ground or voltage in the SIS circuit
3. High or low resistance in the SIS circuit
4. Improper SIS installed on vehicle
5. An internal failure in the SIS

Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis, causing a part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 7: This step tests the SIS signal and SIS voltage circuits for an open or high resistance.
2. 8: This step tests between the SIS signal and SIS voltage circuits for continuity.
3. 9: This step tests the SIS signal and SIS voltage circuits for a short to voltage.

DTC B0086

The inflatable restraint sensing and diagnostic module (SDM) compares the restraint ID that is stored in the SDM to the restraint ID that is stored in the instrument panel module (IPM). The restraints ID that is being compared to contains the last 4 digits of SDM part number. When the ignition is turned ON, the SDM compares this information to the information stored in the IPM over the GMLAN communication circuit. If there is a mismatch between the information stored in the SDM and IPM, DTC B1001 will set.

This diagnostic procedure supports the following DTC

DTC B1001 SDM Option Configuration Error

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B1001

Ignition 1 voltage is within the normal operating voltage range.

B1001 symptom 00

1. The last 4 digits of the SDM part number does not match the last 4 digits stored in the IPM.
2. The VIN stored in the IPM does not match that of the vehicle.

1. The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.
2. The SDM disables all deployments.

The restraints ID that is stored in the SDM matches the restraints ID that is stored in the IPM.

This DTC is an indication that an incorrect SDM is installed in the vehicle, or that the SDM and/or the IPM was replaced without reprogramming the IPM with the new information.

The following numbers refer to the step numbers in the diagnostic table

1. 3: This test checks to see if the correct VIN is programmed in the IPM.
2. 4: This step explains that the IPM must be programmed.
3. 6: This test checks to see if after clearing the DTCs, if this DTC is current then its possible that the wrong SDM has been installed.

DTC B1001

The inflatable restraint sensing and diagnostic module (SDM) runs continuous diagnostic tests on the system. When the ignition is turned on, the SDM will check to see if the correct components are installed for the vehicle configuration. If the SDM detects that a module has been replaced on the vehicle and has not been configured or a module has been configured incorrectly then the SDM will set a DTC B1019. If the SDM has been replaced, make sure that the correct part number was installed for this vehicle.

This diagnostic procedure supports the following DTC

DTC B1019 System Configuration Error

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B1019

Ignition voltage is within the normal operating voltage range.

B1019 symptom 00

1. The SDM was programmed with the wrong options for the vehicle.
2. The wrong SDM was installed for the content of the vehicle.
3. A module has been replace and has not been configure or a module has been configure incorrectly.

1. The SDM commands ON the AIR BAG warning lamp via GMLAN serial data.
2. The SDM disables all deployments.

1. The correct SDM must be installed.
2. The correct components must be installed.
3. All module has been configure correctly.

This DTC is an indication that an incorrect SDM is installed in the vehicle or a module has been replace and has not been configure or a module has been configure incorrectly.

The following numbers refer to the step numbers in the diagnostic table

1. 2: This test checks for current SDM DTCs.
2. 3: This test checks to see if the correct VIN is programmed in the instrument panel module (IPM).
3. 4: This step explains that the IPM must be programmed.

DTC B1019

The inflatable restraint sensing and diagnostic module (SDM) monitors the battery positive voltage input from the battery. If the SDM detects this battery positive voltage circuit is above or below the threshold, then DTC B1325 will set.

This diagnostic procedure supports the following DTC

DTC B1325 Device Power 1 (low current 1) Circuit

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms refer to DTC Symptom Description in Vehicle DTC Information.

DTC B1325

The voltage supplied to the SDM is in the range of 9-16 volts.

B1325 03

1. The SDM detects a system voltage below 9 volts.
2. This condition is present at least 10 seconds.

B1325 07

1. The SDM detects a system voltage above 16 volts.
2. This condition is present at least 10 seconds.

1. The SDM commands the AIR BAG indicator ON via GMLAN serial data.
2. The SDM stores DTC to memory.

1. A current DTC clears when the malfunction is no longer present.
2. A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

The numbers below refer to the step numbers on the diagnostic table.

1. 4: This checks the voltage from the supply voltage side of the AIR BAG fuse.
2. 6: This test the battery positive voltage circuit for high or low resistance or an open.
3. 7: This test the battery positive voltage circuit for a short to voltage or ground.

DTC B1325

The inflatable restraint sensing and diagnostic module (SDM) monitors the Ignition 1 from the ignition switch. When the vehicle ignition is placed in the RUN or CRANK position the switch supplies Ignition 1 voltage to the SDM. If an open, short to voltage, or short to ground in this SDM ignition 1 circuit is detected then DTC B1370 will set.

This diagnostic procedure supports the following DTC

DTC B1370 Device Ignition 1 (ON and Start) Circuit

This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms refer to DTC Symptom Description in Vehicle DTC Information.

DTC B1370

Ignition 1 voltage is within the normal operating range of 9-16 volts.

B1370 01

1. The SDM detects a short to battery in the ignition 1 voltage circuit when the switch is in the OFF position.
2. This condition is present at least 10 seconds.

B1370 06

1. The SDM detects a short to ground or an open in the Ignition 1 voltage circuit when the ignition switch is in RUN or CRANK.
2. This condition is present at least 10 seconds.

1. The SDM commands the AIR BAG indicator ON via GMLAN serial data.
2. The SDM stores DTC to memory.
3. The SDM determines its power mode only from the GMLAN power mode messages and discards the ignition 1 input for the remainder of the ignition cycle.

1. A current DTC clears when the malfunction is no longer present.
2. A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

A history DTC maybe caused by an intermittent short or open in the Ignition 1 circuit. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

The numbers below refer to the step numbers on the diagnostic table.

1. 3: This checks the voltage from the supply voltage side of the AIR BAG fuse.
2. 5: This test the ignition 1 voltage circuit between the output side of the AIR BAG fuse and the SDM connector for high or low resistance or an open
3. 6: This test the ignition 1 voltage circuit in the SDM harness connector for a short to voltage or ground.

DTC B1370

Symptoms - SIR

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information before using the symptom tables in order to verify that all of the following are true: There are no diagnostic trouble codes (DTCs) set. The inflatable restraint sensing and diagnostic module (SDM) can communicate via the serial data link.
2. Review the SIR system description and operation in order to familiarize yourself with the system functions. Refer to «SIR System Description and Operation»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the SIR system. Refer to «Checking Aftermarket Accessories»(/cadillac/sts/i-2004-2007/remont/body-electrical/#wiring-systems-electrical-power-management-introduction__checking-aftermarket-accessories) in Wiring Systems.
2. 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 in Wiring Systems.

Symptom List

Refer to Air Bag Indicator Circuit Malfunction in order to diagnose the symptom.

The ignition switch supplies ignition voltage to the inflatable restraint sensing and diagnostic module (SDM) using the SIR Fuse. The ignition switch also supplies ignition 1 voltage to the instrument panel cluster (IPC). The AIR BAG warning indicator is controlled by the SDM via GMLAN serial data. When the ignition switch is first turned ON, the SDM responds by performing tests on the SIR system and then commanding the AIR BAG warning indicator OFF after it has flashed 7 times if no trouble codes, DTCs, are found.

If battery voltage is outside of the normal operating voltage range, 9-16 volts, the AIR BAG warning indicator will come ON solid with no DTCs set.

Air Bag Indicator Circuit Malfunction

SIR Disabling and Enabling Zones

The SIR system has been divided into Disabling and Enabling Zones. When performing service on or near SIR components or SIR wiring, it may be necessary to disable the SIR components in that zone. It may be necessary to disable more than one zone depending on the location of other SIR components and the area being serviced, refer to SIR Zone Identification Views . Refer to the illustration below, to identify the specific zone or zones in which service will be performed. After identifying the zone or zones, proceed to the disabling and enabling procedures for that particular zone or zones.

Scheme 14

SIR Disabling and Enabling Zones

SIR Service Precautions

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

General Service Instructions

The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity

1. Do not expose inflator modules to temperatures above 65°C (150°F).
2. Verify the correct replacement part number. Do not substitute a component from a different vehicle.
3. Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system.

Discard any of the following components if it has been dropped from a height of 91 cm (3 feet) or greater

1. Inflatable restraint sensing and diagnostic module (SDM)
2. Inflatable restraint instrument panel (I/P) module
3. Inflatable restraint steering wheel module
4. Inflatable restraint steering wheel module coil
5. Inflatable restraint side impact modules (front seat)
6. Inflatable restraint roof side rail modules
7. Inflatable restraint side impact sensors (SIS)
8. Inflatable restraint seat belt pretensioners
9. Inflatable restraint front end sensors

Disabling Procedure

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Open the front hood and remove the fasteners and plastic cover for the radiator.
6. Remove both of the upper radiator support brackets and push the radiator toward the engine to gain access to both front sensors (3, 4).
7. Remove both connector position assurances (CPAs) (1, 6) from the left and right front end sensor connectors (2, 5).
8. Remove both connectors (2, 5) from the left and right front end sensors (3, 4).

Enabling Procedure

1. Place the ignition in the OFF position.
2. Connect both connectors (2, 5) to the left and right front end sensors (3, 4).
3. Connect both CPAs (1, 6) to the left and right front sensor connectors (2, 5).
4. Install both upper radiator support brackets.
5. Install the plastic cover for the radiator.
6. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
7. Install the right and left rear fuse center covers.
8. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
9. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
10. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. When disabling the roof rail module, go to step 6. If the side impact sensor (SIS) needs disabling, then go to step 10.
6. Remove the left carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Push the rear seat back away from the rear pillar to expose the left/driver roof rail module connector.
8. Remove the connector position assurance (CPA) (3) from the roof rail module yellow connector (2).
9. Disconnect the left roof rail module yellow connector (2) from the left roof rail module (1).
10. Remove the left center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
11. Remove the SIS CPA (1) from the left SIS connector (2).
12. Remove the SIS connector (2) from the SIS (3).

1. Place the ignition in the OFF position.
2. When enabling the SIS, proceed to step 3. If the roof rail module needs enabling, then go to step 6.
3. Connect the SIS connector (2) to the SIS (3).
4. Connect the CPA (1) to the SIS connector (2).
5. Install the left center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Connect the left roof rail module yellow connector (2) to the roof rail module (1).
7. Install the CPA (3) to the left roof rail module connector (2).
8. Release rear seat back.
9. Install the left carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
10. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
11. Install the right and left rear fuse center covers.
12. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
13. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
14. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Remove the left/driver sound insulator from the instrument panel (I/P) (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
6. Remove the connector position assurance (CPA) from the steering wheel module coil yellow connector (1).
7. Disconnect the steering wheel module coil yellow connector (1) from the vehicle harness yellow connector (3).

1. Place the ignition in the OFF position.
2. Connect the steering wheel module coil yellow connector (3) to the vehicle harness yellow connector (1).
3. Install the CPA to the steering wheel module coil yellow connector (1).
4. Install the left sound insulator to the I/P (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
5. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
6. Install the right and left rear fuse center covers.
7. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
8. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
9. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Remove the right/passenger sound insulator from the instrument panel (I/P) (3). Refer to «Instrument Panel (I/P) Outer Trim Cover Replacement - Right»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
6. Remove the connector position assurance (CPA) from the I/P module yellow connector (1).
7. Disconnect the I/P module yellow connector (1) from the vehicle harness yellow connector (2).

1. Place the ignition in the OFF position.
2. Connect the I/P module yellow connector (1) to the vehicle harness yellow connector (2).
3. Install the CPA to the I/P module yellow connector (2).
4. Install the right sound insulator to the I/P (3). Refer to «Instrument Panel (I/P) Outer Trim Cover Replacement - Right»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
5. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
6. Install the right and left rear fuse center covers.
7. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
8. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
9. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. When disabling the roof rail module, go to step 6. If the side impact sensor (SIS) needs disabling, then go to step 10.
6. Remove the right carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Push the rear seat back away from the rear pillar to expose the right/passenger roof rail module connector.
8. Remove the connector position assurance (CPA) (3) from the roof rail module yellow connector (2).
9. Disconnect the right roof rail module yellow connector (2) from the right roof rail module (1).
10. Remove the right center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
11. Remove the SIS CPA (1) from the right SIS connector (2).
12. Remove the SIS connector (2) from the SIS (3).

1. Place the ignition in the OFF position.
2. When enabling the SIS, proceed to step 3. If the roof rail module needs enabling, then go to step 6.
3. Connect the SIS connector (2) to the SIS (3).
4. Connect the CPA (1) to the SIS connector (2).
5. Install the right center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Connect the right roof rail module yellow connector (2) to the roof rail module (1).
7. Install the CPA (3) to the right roof rail module connector (2).
8. Release the rear seat back.
9. Install the right carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
10. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
11. Install the right and left rear fuse center covers.
12. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
13. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
14. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Remove both of the connector position assurances (CPAs) from the LF/driver side impact module and seat belt pretensioner yellow connector (1) which is located under the front of driver seat.
6. Disconnect the LF side impact module and pretensioner yellow connector (1) from the vehicle harness yellow connector.

1. Place the ignition in the OFF position.
2. Connect the LF side impact module and pretensioner yellow connector (1) to the vehicle harness yellow connector.
3. Install both CPA locks to the LF side impact module and pretensioner yellow connector (1).
4. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Install the right and left rear fuse center covers.
6. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
7. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
8. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Remove the right carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Push the rear seat back away from the rear pillar to expose the right/passenger roof rail module connector.
7. Remove the connector position assurance (CPA) (3) from the roof rail module yellow connector (2).
8. Disconnect the right roof rail module yellow connector (2) from the right roof rail module (1).
9. Remove the passenger/right sound insulator from the instrument panel (I/P) (3). Refer to «Instrument Panel (I/P) Outer Trim Cover Replacement - Right»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
10. Remove the CPA from the I/P module yellow connector (1).
11. Disconnect the I/P module yellow connector (1) from the vehicle harness yellow connector (2).
12. Remove both CPA locks from the passenger/RF side impact module and seat belt pretensioner yellow connector (1) located under the front of passenger seat.
13. Disconnect the RF side impact module and pretensioner yellow connector from the vehicle harness yellow connector (1).
14. Remove the driver/left sound insulator from the I/P (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
15. Remove the CPA from the steering wheel module coil yellow connector (1).
16. Disconnect the steering wheel module coil yellow connector (1) from the vehicle harness yellow connector (3).
17. Remove both CPA locks from the driver/LF side impact module and seat belt pretensioner yellow connector (1) located under the front of driver seat.
18. Disconnect the LF side impact module and pretensioner yellow connector from the vehicle harness yellow connector (1).
19. Remove the left carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
20. Push the rear seat back away from the rear pillar to expose the left/driver roof rail module connector.
21. Remove the CPA (3) from the roof rail module yellow connector (2).
22. Disconnect the left roof rail module yellow connector (2) from the left roof rail module (1).

1. Place the ignition in the OFF position.
2. Connect the steering wheel module coil yellow connector (1) to the vehicle harness yellow connector (3).
3. Install the CPA to the steering wheel module coil yellow connector (1).
4. Install the driver/left sound insulator to the I/P (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
5. Connect the driver/LF side impact module and seat belt pretensioner yellow connector to the vehicle harness yellow connector (1) located under the front of driver seat.
6. Install both CPA locks to the LF side impact module and pretensioner yellow connector (1).
7. Connect the left roof rail module yellow connector (2) to the roof rail module (1).
8. Install the CPA (3) to the left roof rail module connector (2).
9. Release the rear seat back.
10. Install the left carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
11. Connect the passenger/I/P module yellow connector (1) to the vehicle harness yellow connector (2).
12. Install the CPA to the I/P module yellow connector (1).
13. Install the passenger/right sound insulator to the I/P (3). Refer to «Instrument Panel (I/P) Outer Trim Cover Replacement - Right»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
14. Connect the passenger/RF side impact module and seat belt pretensioner yellow connector to the vehicle harness yellow connector (1) located under the front of passenger seat.
15. Install both CPA locks to the RF side impact module and pretensioner yellow connector (1).
16. Connect the right roof rail module yellow connector (2) to the roof rail module (1).
17. Install the CPA (3) to the right roof rail module connector (2).
18. Release the rear seat back.
19. Install the right carpet retainer trim. Refer to «Carpet Retainer Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
20. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
21. Install the right and left rear fuse center covers.
22. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
23. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
24. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Place the ignition to the OFF position.
3. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
4. Locate and remove the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Remove both connector position assurance (CPA) from the RF/passenger side impact module and seat belt pretensioner yellow connector (1) which is located under the front of passenger seat.
6. Disconnect the RF side impact module and pretensioner yellow connector (1) from the vehicle harness yellow connector.

1. Place the ignition in the OFF position.
2. Connect the RF side impact module and pretensioner yellow connector (1) to the vehicle harness yellow connector.
3. Install both CPA locks to the RF side impact module and pretensioner yellow connector (1).
4. Install both the AIR BAG (IGN) fuse in the right rear fuse center (1) and the AIR BAG (BATT) fuse from the left rear fuse center (2).
5. Install the right and left rear fuse center covers.
6. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
7. Use caution while reaching in and switch the ignition to the ON position. The AIR BAG indicator will flash, then turn OFF.
8. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information.

Removal Procedure

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 1»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the radiator sight shield.
3. Loosen the radiator and reposition to gain access to the sensor.
4. Remove the connector position assurance (CPA) from the wiring harness connector to the inflatable restraint front end sensor.
5. Disconnect the wiring harness connector from the front end sensor.
6. Loosen the front end sensor mounting fastener which is located in the upper tie bar.
7. Remove the front end sensor from the upper tie bar.

Installation Procedure

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Position the sensor horizontally on the mounting surface.
3. Point the arrow on the sensor toward the front of the vehicle.
4. Install the mounting fasteners. Tighten: Tighten the fastener to 9 N.m (80 lb in).
5. Connect the harness wiring connector to the front end sensor.
6. Install the CPA to the wiring harness connector on the front end sensor.
7. Reposition the radiator.
8. Install the radiator sight shield.
9. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 1»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 6»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Move the seat to the full forward position.
3. Remove the center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Remove the connector position assurance (CPA) (1) from the harness connector (2) to the inflatable restraint side impact sensor (SIS).
5. Disconnect the harness connector (2) from the SIS (3).
6. Remove the SIS mounting fasteners (2).
7. Remove the SIS (1) from the center pillar.

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Install the SIS (1) to the center pillar.
3. Install the SIS mounting fasteners (2). Tighten: Tighten the fasteners to 9 N.m (80 lb in).
4. Install the harness connector (2) to the SIS (3).
5. Install the CPA (1) to the SIS harness connector (2).
6. Install the center pillar trim. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Move the seat to the original position.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 6»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 8»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the center console. Refer to «Console Replacement - Front Floor»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
3. Disconnect the wiring harness connector from the SDM.
4. Remove the SDM mounting fasteners.
5. Remove the SDM from the console floor.

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Install the SDM horizontally to the console floor.
3. Point the arrow on the SDM toward the front of the vehicle.
4. Install the SDM mounting fasteners. Tighten: Tighten fasteners to 9 N.m (80 lb in).
5. Connect the wiring harness connector to the SDM.
6. Install the console. Refer to «Console Replacement - Front Floor»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
7. Install the driver and the passenger seats to the original position.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 8»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
9. Program the new SDM into the dash integration module (DIM).

Tools Required

J 44298 Driver Air Bag Removal Tool. See Special Tools .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. On the back side of the steering wheel are 3 openings for removing the steering wheel module.
3. Adjust and install J 44298 into 1 of the holes. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
4. Pull the handle of the air bag tool away from the instrument panel (I/P) releasing one of the spring loaded fasteners.
5. Repeat this step for the other 2 fasteners.
6. Pull the inflatable restraint module gently away from the steering wheel.
7. Remove the connector position assurance (CPA) (4) and the electrical connector from the steering wheel module.
8. Remove the horn contact lead (2) from the steering column cam tower.
9. Remove the steering wheel module (5).

1. Connect the horn contact lead into the steering column cam tower.
2. Connect the steering wheel module electrical connector and the CPA (4). IMPORTANT: This vehicle is equipped with dual stage air bags, you will find 2 connectors. Match the right color connector to the right color opening in the module. Route the steering wheel module wires, the redundant control wires, and the horn wires correctly.
3. Align the steering wheel module fasteners to the steering column fastener holes.
4. Push the steering wheel module firmly into the steering column in order to engage the fasteners.
5. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
6. After replacing the module, deploy the old module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Inflator Module Handling and Scrapping»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for proper disposal.

J 42640 Steering Column Anti Rotation Pin

1. Disable the SIR System. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Verify the following before removing the SIR coil: The wheels on the vehicle are straight ahead. That J 42640 is installed or the ignition switch is in the LOCK position.
3. Remove the steering wheel from the steering shaft. Refer to «Steering Wheel Replacement»(/cadillac/sts/i-2004-2007/remont/steering-column-switches/#steering-wheel-steering-column__steering-wheel-replacement) in Steering Wheel and Column.
4. On vehicles with a tilt column, pull the tilt lever straight out from the steering column.
5. Remove 2 TORX® head screws (1) from the lower trim cover (2).
6. Remove the lower trim cover (2).
7. Remove 2 TORX® head screws (2) from the upper trim cover (1).
8. Remove the upper trim cover (1).
9. Remove the wire harness straps from the steering wheel column wire harness.
10. Remove the retaining ring (3).
11. Remove the SIR coil (4) from the steering shaft.
12. If replacing, discard the SIR coil.

1. Verify the following: The wheels on the vehicle are straight ahead. That J 42640 is installed or the ignition switch is in the LOCK position.
2. If reusing the existing coil it MUST be centered, refer to «Inflatable Restraint Steering Wheel Module Coil Centering»(/cadillac/sts/i-2004-2007/remont/steering-column-switches/#steering-wheel-steering-column__inflatable-restraint-steering-wheel-module-coil) in Steering Wheel and Column.
3. Align the SIR coil assembly (1) with the horn tower on the turn signal cancel cam assembly (2).
4. Slide the SIR coil (4) onto the steering shaft assembly (2).
5. Firmly seat the retaining ring (3) into the groove on the steering shaft assembly (2).
6. Remove and discard the centering tab from the new SIR coil (4).
7. Install the upper trim cover (1) and secure by using 2 TORX® head screws (2). Tighten: Tighten the screws to 1.5 N.m (13 lb in).
8. Install the lower trim cover (2) and secure by using 2 TORX® head screws (1).
9. Verify that the tabs on the lower trim cover (1) engage with the tabs on the upper trim cover (2). Snap the tabs together. Tighten: Tighten the screws to 1.5 N.m (13 lb in).
10. On vehicles with a tilt column, align the tilt lever into the steering column.
11. Slide the tilt lever handle into the steering column until the handle locks into position.
12. Install the steering wheel onto the steering shaft. Refer to «Steering Wheel Replacement»(/cadillac/sts/i-2004-2007/remont/steering-column-switches/#steering-wheel-steering-column__steering-wheel-replacement) in Steering Wheel and Column.
13. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 5»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the I/P retainer. Refer to «Instrument Panel (I/P) Retainer Replacement»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
3. Note the wire harness routing position on the I/P module, to help in assembly.
4. Remove the I/P module mounting fasteners.
5. Remove the I/P module from the I/P.

1. Route the I/P module pigtail down through the I/P.
2. Install the I/P module to the instrument panel.
3. Install the I/P module mounting fasteners. Tighten: Tighten the fasteners to 9 N.m (80 lb in).
4. Route the I/P module wiring harness in place to secure the I/P module yellow 2-way connector clip.
5. Install the I/P retainer. Refer to «Instrument Panel (I/P) Retainer Replacement»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
6. Install the I/P module yellow connector to the vehicle harness yellow connector.
7. Install the CPA to the instrument panel module connector.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 5»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
9. After replacing the module, deploy the old module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Inflator Module Handling and Scrapping»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for proper disposal.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for passenger seat.
2. Move the seat to the full forward position.
3. Remove the seat back panel cover (2) from the seat (1) by pulling out the top of the panel and lifting the bottom away from the seat to release the hook retainers.
4. Remove the 2 bolts (1) from the inflatable restraint side impact module bracket.
5. Remove the module from the seat.
6. Remove the Connector Position Assurance (CPA) from the module electrical connector.
7. Disconnect the electrical connector (1) from the module.

1. Install a new inflatable restraint side impact module bracket.
2. Install the 2 bracket mounting bolts to the module. Tighten: Tighten the bolts to 9 N.m (80 lb in).
3. Connect the electrical connector (1) to the inflatable restraint side impact module.
4. Install the connector position assurance (CPA) to the module electrical connector.
5. Install the module to the seat.
6. Install the 2 bolts (1) to the inflatable restraint side impact module. Tighten: Tighten the bolts to 9 N.m (80 lb in).
7. Install the seat back panel (2) to the seat (1) by sliding the bottom of the panel into place and pushing the top of the panel in until the push-in retainers are secure.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for passenger seat.
9. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Inflator Module Handling and Scrapping»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for passenger seat.
2. Partially remove the seat back panel to access the wiring.
3. Remove the inflatable restraint side impact module (2) from the seat (1). Refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) . With the seat back panel removed, the inflatable restraint side impact module wiring harness (3) will be exposed.
4. Remove the retaining clips that fasten the side impact module wiring harness (3) to the seat (1).

1. Install the new side impact module wiring harness (3) to the seat (1).
2. Install the retaining clips that fasten the side impact module wiring harness (3) to the seat (1).
3. Install the side impact module (2) to the seat (1). Refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
4. Install the seat back panel.
5. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) for passenger seat.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
3. Remove the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Remove the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
5. Remove the rear seat back. Refer to «Seat Back Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
6. Remove the connector position assurance (CPA) from the harness connector to the inflatable restraint roof rail module.
7. Disconnect the harness connector from the roof rail module.
8. Lower the headliner to gain clearance to the roof rail module.
9. Remove the fasteners (2, 3) from the roof rail module.
10. Remove the roof rail module from the roof.

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Install the mounting fasteners (2, 3) to the inflatable restraint roof rail module. Tighten: Tighten the fasteners to 9 N.m (80 lb in).
3. Install the roof rail module harness connector to the wiring harness.
4. Install the CPA to the roof rail module harness connector.
5. Install the windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Install the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Install the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
8. Install the rear seat back. Refer to «Seat Back Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
9. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
10. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Inflator Module Handling and Scrapping»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
3. Remove the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Remove the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
5. Remove the rear seat back. Refer to «Seat Back Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
6. Remove the connector position assurance (CPA) from the harness connector to the inflatable restraint roof rail module.
7. Disconnect the harness connector from the roof rail module.
8. Lower the headliner to gain clearance to the roof rail module.
9. Remove the fasteners (2, 3) from the roof rail module.
10. Remove the roof rail module from the roof.

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Install the mounting fasteners (2, 3) to the inflatable restraint roof rail module. Tighten: Tighten the fasteners to 9 N.m (80 lb in).
3. Install the roof rail module harness connector to the wiring harness.
4. Install the CPA to the roof rail module harness connector.
5. Install the windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Install the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Install the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
8. Install the rear seat back. Refer to «Seat Back Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/seats/#seat-system) in Seats.
9. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
10. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Inflator Module Handling and Scrapping»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 9»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the seat.
3. Remove the pretensioner trim cover.
4. Remove the pretensioner nut (3) and remove the pretensioner (2) from the seat.
5. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Pretensioner Handling and Scrapping»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Align the locating tab to the slot and install the pretensioner (2) to the seat.
2. Install the nut (3) while holding the pretensioner in place. Tighten: Tighten the nut to 41 N.m (30 lb ft).
3. Install the pretensioner trim cover.
4. Install the seat.
5. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling Zone 9»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

Accident With or Without Air Bag Deployment - Component Inspections

After any collision, inspect the following components as indicated. If you detect any damage, replace the component. If you detect any damage to the mounting points or mounting hardware, repair the component or replace the hardware as needed.

1. The steering column-Perform the steering column accident damage checking procedures. Refer to «Steering Column Accident Damage Inspection»(/cadillac/sts/i-2004-2007/remont/steering-column-switches/#steering-wheel-steering-column__steering-column-accident-damage-inspection) in Steering Wheel and Column.
2. The instrument panel (I/P) knee bolsters and mounting points-Inspect the knee bolsters for bending, twisting, buckling, or any other type of damage.
3. The I/P brackets, braces, etc.-Inspect for bending, twisting, buckling, or any other type of damage.
4. The seat belts-Perform the seat belt operational and functional checks. Refer to «Repairs and Inspections Required After a Collision»(/cadillac/sts/i-2004-2007/remont/restraints-control-systems/#seat-belt-system__repairs-and-inspections-required-after-a) in Seat Belts.
5. The I/P cross car beam-Inspect for bending, twisting, buckling, or any other type of damage.
6. The I/P mounting points and brackets-Inspect for bending, twisting, buckling, or any other type of damage.
7. The seats and seat mounting points-Inspect for bending, twisting, buckling, or any other type of damage.
8. The roof and headliner mounting points

Accident With Frontal Air Bag Deployment - Component Replacement and Inspections

After a collision involving air bag deployment, replace the following components.

1. Inflatable restraint I/P module
2. Inflatable restraint steering wheel module
3. Inflatable restraint sensing and diagnostic module (SDM)
4. Inflatable restraint front end sensors
5. Inflatable restraint side impact modules, front seat air bags, if deploy
6. Inflatable restraint seat belt pretensioners

Perform additional inspections on the following components.

1. Steering wheel module coil and the coil wiring pigtail-Inspect for melting, scorching, or other damage due to excessive heat.
2. Mounting points or mounting hardware for the I/P module, steering wheel module, SDM, and pretensioners-Inspect for any damage and repair or replace each component as needed.

Accident With Side Air Bag Deployment - Component Replacement and Inspections

After a collision involving side air bag deployment, replace the following components.

1. Inflatable restraint side impact sensors (SIS), Left/Right, on the side of the impact.
2. Inflatable restraint roof rail module, Left/Right, on the side of the impact.
3. Inflatable restraint side impact modules, front seat air bags, if deploy
4. Inflatable restraint sensing and diagnostic module (SDM).
5. Inflatable restraint seat belt pretensioner

Perform additional inspections on the following components.

1. Mounting points or mounting hardware for the SIS, and side impact module (LF/RF) on the side of impact-Inspect for any damage and repair or replace each component as needed.
2. Mounting points or mounting hardware for the roof rail module (left/right) on the side of impact-Inspect for any damage and repair or replace each component as needed.
3. Mounting points or mounting hardware for the SDM and seat belt pretensioners-Inspect for any damage and repair or replace each component as needed.

Sensor Replacement Guidelines

The SIR/side air bag sensor replacement policy requires replacing sensors in the area of accident damage. The area of accident damage is defined as the portion of the vehicle which is crushed, bent, or damaged due to a collision. An example of this would be a moderate collision where the front of the vehicle impacts a tree. If the vehicle has an SIR sensor mounted forward of the radiator, it must be replaced.

1. Replace the sensor whether or not the air bags have deployed.
2. Replace the sensor even if it appears to be undamaged.

Sensor damage which is not visible, such as slight bending of the mounting bracket or cuts in the wire insulation, can cause improper operation of the SIR/side air bag sensing system. Do not try to determine whether the sensor is undamaged, replace the sensor. Also, if you follow a diagnostic trouble code (DTC) table and a malfunctioning sensor is indicated, replace the sensor.

Live (Undeployed) Inflator Module

Scheme 15

Take special care when handling or storing a live (undeployed) inflator module. An inflator module deployment produces a rapid generation of gas. This may cause the inflator module, or an object in front of the inflator module, to project through the air in the event of an unlikely deployment.

Dual Stage Inflator Module

Dual stage inflator modules have 2 deployment stages. If stage 1 was used to deploy a dual stage inflator module, stage 2 may still be active. Therefore, a deployed dual stage inflator module must be treated as an active module. If disposal of a deployed or undeployed dual stage module is required both deployment loops must be energized to deploy the air bag.

Scrapping Procedure

During the course of a vehicles useful life, certain situations may arise which will require the disposal of a live (undeployed) inflator module. Do not dispose a live (undeployed) inflator module through normal disposal channels until the inflator module has been deployed. The following information covers the proper procedures for the disposing of a live (undeployed) inflator module.

Do not deploy the inflator module in the following situations

1. After replacement of an inflator module under warranty. The inflator module may need to be returned undeployed to the manufacturer.
2. If the vehicle is the subject of a Product Liability report related to the SIR system and is subject to a Preliminary Investigation (GM-1241). Do not alter the SIR system in any manner.
3. If the vehicle is involved in a campaign affecting the inflator modules. Follow the instructions in the Campaign Service Bulletin for proper SIR handling procedures.

Deployment Procedures

The inflator module can be deployed inside or outside of the vehicle. The method used depends upon the final disposition of the vehicle. Review the following procedures in order to determine which will work best in a given situation

Deployment Outside Vehicle (Steering Wheel Module, I/P Module, Side Impact Module, and Roof Rail Module)

Deploy the inflator module outside of the vehicle when the vehicle will be returned to service. Situations that require deployment outside of the vehicle include the following

1. Using the SIR diagnostics, you determine that the inflator module is malfunctioning.
2. The inflator module is cosmetically damaged (scratched or ripped).
3. The inflator module pigtail (if equipped) is damaged.
4. The inflator module connector is damaged.
5. The inflator module connector terminals are damaged.

Deployment and disposal of a malfunctioning inflator module is subject to any required retention period.

Tools Required

1. J 38826 SIR Deployment Harness. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 39401-B SIR Deployment Fixture. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
3. J 38826-25 Roof rail module adapter
4. J 38826-50 Side impact module adapter
5. J 38826-75 Steering wheel module adapter (dual stage air bags)
6. J 38826-80 I/P module adapter (dual stage air bags)

1. Turn OFF the ignition.
2. Remove the ignition key.
3. Put on safety glasses.
4. Remove the inflator module. Refer to the following: If you are removing the steering wheel module, refer to «Inflatable Restraint Steering Wheel Module Replacement»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing the instrument panel (I/P) module, refer to «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a side impact module, refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a roof rail module, refer to «Inflatable Restraint Roof Rail Module Replacement - Left»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) and/or «Inflatable Restraint Roof Rail Module Replacement - Right»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
5. Place the inflator module with the vinyl trim cover facing up and away from the surface on a work bench.
6. Clear a space on the ground about 1.85 m (6 ft) in diameter for deployment of the inflator module or deployment fixture. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Make sure you have sufficient ventilation.
7. Make sure no loose or flammable objects are in the area.
8. If you have a steering wheel inflator module, place the inflator module in the center of the space.
9. If you have an I/P inflator module, refer to the following instructions: Place the J 39401-B (2) in the center of the cleared area. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Fill the deployment fixture with water or sand. Using the proper nuts and bolts, mount the I/P module (1) to the deployment fixture (2), with the vinyl trim facing up. Securely tighten all fasteners that hold the I/P module (1) to the deployment fixture (2).
10. If you have a side impact module, refer to the following instructions: Place the J 39401-B (3) in the center of the cleared area. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Fill the deployment fixture with water or sand. Using the proper nuts and mount the side impact module (1) to the deployment fixture (3), with the vinyl trim facing up. Adjust and secure the fixture arms (4) to the deployment fixture (3). Securely tighten all fasteners that hold the side impact module (1) to the deployment fixture (3).
11. If you have a roof rail module, refer to the following instructions: Place the J 39401-B (3) in the center of the cleared area. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Fill the deployment fixture with water or sand. Using the proper nuts (2) and mount the roof rail module (1) to the deployment fixture (3), with the vinyl face up. Adjust and secure the fixture arms (4) to the deployment fixture (3). Securely tighten all fasteners that hold the roof rail module (1) to the deployment fixture (3).
12. Inspect the J 38826 and the appropriate pigtail adapter for damage. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Replace as needed.
13. Short the 2 SIR deployment harness leads (1) together using one banana plug seated into the other.
14. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
15. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
16. Connect the inflator module to the adapter (2) on the SIR deployment harness (1).
17. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.
18. Clear the area of people.
19. Separate the 2 banana plugs on the SIR deployment harness.
20. Connect the SIR deployment harness wires to the power source. Inflator module deployment will occur when contact is made.
21. Disconnect the SIR deployment harness from the power source after the inflator module deploys.
22. If the inflator module did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
23. Seat one banana plug into the other in order to short the deployment harness leads.
24. Put on a pair of shop gloves.
25. Disconnect the pigtail adapter from the inflator module as soon as possible.
26. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
27. Dispose of the deployed inflator module through normal refuse channels.
28. Wash hands with a mild soap.

Deployment Inside Vehicle (Vehicle Scrapping Procedure)

Deploy the inflator modules inside of the vehicle when destroying the vehicle or when salvaging the vehicle for parts. This includes but is not limited to the following situations

1. The vehicle has completed its useful life.
2. Irreparable damage occurs to the vehicle in a non-deployment type accident.
3. Irreparable damage occurs to the vehicle during a theft.
4. The vehicle is being salvaged for parts to be used on a vehicle with a different VIN as opposed to rebuilding as the same VIN.

1. Turn the ignition switch to the OFF position.
2. Remove the ignition key.
3. Put on safety glasses.
4. Remove all loose objects from the front seats.
5. Disable the SIR system. Refer to «SIR Disabling and Enabling Zones»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling-zones) .
6. Disconnect the steering wheel module yellow connector (1) from vehicle harness yellow connector (3).
7. Cut the yellow harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
8. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
9. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gage) or thicker multi-strand wire. Use these wires to fabricate the driver deployment harness.
10. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
11. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the inflator module.
12. Twist together 2 connector wire leads (the high circuits from both stages of the steering wheel module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
13. Inspect that the 3-wire connection is secure.
14. Bend flat the twisted connection.
15. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
16. Twist together 2 connector wire leads (the low circuits from both stages of the steering wheel module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
17. Inspect that the 3-wire connection is secure.
18. Bend flat the twisted connection.
19. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
20. Connect the deployment harness to the steering wheel module in-line connector.
21. Route the deployment harness out of the driver side of the vehicle.
22. Disconnect the driver side air bag/pretensioner yellow connector (1) from the vehicle wiring harness located under the front of driver seat.
23. Cut the 4 SIR wires (2 for side air bag and 2 for pretensioner) leading to the yellow harness connector from the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
24. Strip 13 mm (0.5 in) of insulation from all 4 SIR wires connector leads (2 for side air bag and 2 for pretensioner).
25. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gage) or thicker multi-strand wire. Use these wires to fabricate the deployment harness.
26. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
27. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the side air bag module and pretensioner.
28. Twist together 2 connector wire leads (the high circuits from side air bag and pretensioner ) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
29. Inspect that the 3-wire connection is secure.
30. Bend flat the twisted connection.
31. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
32. Twist together 2 connector wire leads (the low circuits from side air bag and pretensioner ) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
33. Inspect that the 3-wire connection is secure.
34. Bend flat the twisted connection.
35. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
36. Connect the deployment harness to the driver side air bag/pretensioner yellow connector.
37. Route the deployment harness out of the driver side of the vehicle.
38. Disconnect the left/driver roof rail yellow harness connector (2) from the left roof rail air bag (1).
39. Cut the harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
40. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
41. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gage) or thicker multi-strand wire. These wires will be used to fabricate the roof rail air bag deployment harness.
42. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
43. Twist together one end from each of the wires in order to short the wires.
44. Twist together one connector wire lead to one deployment wire.
45. Bend flat the twisted connection.
46. Secure and insulate the connection using electrical tape.
47. Twist together, bend, and tape the remaining connector wire lead to the remaining deployment wire.
48. Connect the deployment harness to the roof rail module yellow connector.
49. Route the deployment harness out of the driver side of the vehicle.
50. Disconnect the I/P module yellow harness connector (1) from the vehicle harness connector (2).
51. Cut the yellow harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
52. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
53. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gage) or thicker multi-strand wire. These wires will be used to fabricate the passenger deployment harness.
54. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
55. Twist together one end from each of the wires in order to short the wires.
56. Twist together 2 connector wire leads (the high circuits from both stages of the steering wheel module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
57. Inspect that the 3-wire connection is secure.
58. Bend flat the twisted connection.
59. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
60. Twist together 2 connector wire leads (the low circuits from both stages of the I/P module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
61. Inspect that the 3-wire connection is secure.
62. Bend flat the twisted connection.
63. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
64. Connect the deployment harness to the I/P module in-line connector.
65. Route the deployment harness out of the passenger side of the vehicle.
66. Disconnect the passenger side air bag/pretensioner yellow connector (1) from the vehicle wiring harness located under the front of driver seat.
67. Cut the 4 SIR wires (2 for side air bag and 2 for pretensioner) leading to the yellow harness connector from the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
68. Strip 13 mm (0.5 in) of insulation from all 4 SIR wires connector leads (2 for side air bag and 2 for pretensioner).
69. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gage) or thicker multi-strand wire. Use these wires to fabricate the deployment harness.
70. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
71. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the side air bag module and pretensioner.
72. Twist together 2 connector wire leads (the high circuits from side air bag and pretensioner) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
73. Inspect that the 3-wire connection is secure.
74. Bend flat the twisted connection.
75. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
76. Twist together 2 connector wire leads (the low circuits from side air bag and pretensioner) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__sir-connector-end-views) in order to determine the correct circuits.
77. Inspect that the 3-wire connection is secure.
78. Bend flat the twisted connection.
79. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
80. Connect the deployment harness to the passenger side air bag/pretensioner yellow connector.
81. Route the deployment harness out of the passenger side of the vehicle.
82. Disconnect the right/passenger roof rail air bag yellow harness connector (2) from the right roof rail air bag (1).
83. Cut the harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
84. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
85. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gage) or thicker multi-strand wire. These wires will be used to fabricate the roof rail air bag deployment harness.
86. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
87. Twist together one end from each of the wires in order to short the wires.
88. Twist together one connector wire lead to one deployment wire.
89. Bend flat the twisted connection.
90. Secure and insulate the connection using electrical tape.
91. Twist together, bend, and tape the remaining connector wire lead to the remaining deployment wire.
92. Connect the deployment harness to the roof rail module yellow connector.
93. Route the deployment harness out of the passenger side of the vehicle.
94. Completely cover the windshield and front door window openings with a drop cloth.
95. Stretch out all of the deployment harness wires on the right side of the vehicle to their full length.
96. Deploy each deployment loop one at a time.
97. Place a power source, 12 V minimum/2 A minimum (i.e., a vehicle battery) near the shorted end of the harnesses.
98. Separate the one set of wires and touch the wires ends to the power source in order to deploy the inflator modules, doing one module at a time.
99. Disconnect the deployment harness from the power source and twist the wire ends together.
100. Continue the same process with the remaining deployment harnesses that are available.
101. Stretch out all of the deployment harness wires on the left side of the vehicle to their full length.
102. Deploy each deployment loop one at a time.
103. Place a power source, 12 V minimum/2 A minimum (i.e., a vehicle battery) near the shorted end of the harnesses.
104. Separate the one set of wires and touch the wires ends to the power source in order to deploy the inflator modules, doing one module at a time.
105. Disconnect the deployment harness from the power source and twist the wire ends together.
106. Continue the same process with the remaining deployment harnesses that are available.
107. Remove the drop cloth from the vehicle.
108. Disconnect all harnesses from the vehicle.
109. Discard the harnesses.
110. Scrap the vehicle in the same manner as a non-SIR equipped vehicle.
111. If one or all of the inflator modules did not deploy, perform the following steps to remove the undeployed module(s) from the vehicle: «Inflatable Restraint Steering Wheel Module Replacement»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Roof Rail Module Replacement - Left»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Roof Rail Module Replacement - Right»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system)

Scheme 16

During the course of a vehicle's useful life, certain situations may arise which will necessitate the disposal of a live (undeployed) pretensioner. The following information covers the proper procedures for the disposing of a live (undeployed) pretensioner. Deploy the pretensioner before disposal. Do not dispose of a live (undeployed) pretensioner through normal disposal channels until the pretensioner has been deployed. The following information covers the proper procedures for the disposing of a live (undeployed) pretensioner.

1. After replacement of a pretensioner under warranty. The pretensioner may need to be returned undeployed to the original manufacturer of pretensioner.
2. If the vehicle is the subject of a Product Liability report related to the SIR system and is subject to a Preliminary Investigation (GM-1241). Do not alter the SIR system in any manner.
3. If the vehicle is involved in a campaign affecting the pretensioners. Follow the instructions in the Campaign Service Bulletin for proper SIR handling procedures.

The pretensioner can be deployed inside or outside of the vehicle. The method used depends upon the final disposition of the vehicle. Review the following procedures in order to determine which will work best in a given situation.

Deployment Inside the Vehicle

Refer to Inflator Module Handling and Scrapping for deploying the pretensioner inside vehicle under Vehicle Scrapping Procedure.

Deployment Outside Vehicle for Seat Belt Pretensioners

Deploy the seat belt pretensioners outside of the vehicle when the vehicle will be returned to service. Situations that require deployment outside of the vehicle include the following

1. Using the SIR diagnostics, you determine that the seat belt pretensioner is malfunctioning.
2. The pretensioner pigtail (if equipped) is damaged.
3. The pretensioner connector is damaged.
4. The pretensioner connector terminal is damaged.

Deployment and disposal of a malfunctioning seat belt pretensioner is subject to any required retention period.

Tools Required

1. J 39401-B SIR Deployment Fixture. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38826 SIR Deployment Harness. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
3. J 38826-25 for seat belt pretensioner module adapter

1. Turn the ignition switch to the OFF position.
2. Remove the ignition key.
3. Put on safety glasses.
4. Remove the seat belt pretensioner from the vehicle. Refer to (link to repair procedure).
5. When carrying a pretensioner to the deployment area keep the open end of pretensioner pointed away from the body.
6. Clear a space on the ground about 1.85 M (6 ft) in diameter for deployment of the pretensioner. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Make sure you have sufficient ventilation.
7. Make sure no loose or flammable objects are in the area.
8. Place the J 39401-B in the center of the cleared area. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
9. Fill the fixture plastic reservoir with water or sand.
10. Mount the module (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method. Adjust and secure the J 39401-B arms (4) to the deployment fixture (3). To mount, use the proper size bolt (2) and nut (5) with washers in order to secure the pretensioner (1) to the deployment fixture brackets (4). Securely tighten all fasteners prior to deployment.
11. Inspect the J 38826 and the appropriate pigtail adapter for damage. See «Special Tools»(/cadillac/sts/i-2004-2007/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Replace as needed.
12. Short the 2 SIR deployment harness (1) leads together using one banana plug seated into the other.
13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
14. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
15. Connect the pretensioner (1) to the adapter (2) on the deployment harness (3).
16. Clear the area of people.
17. Separate the 2 banana plugs on the SIR deployment harness.
18. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.
19. Connect the SIR deployment harness wires to the power source. Pretensioner deployment will occur when contact is made.
20. Disconnect the SIR deployment harness from the power source after the pretensioner deploys.
21. Seat one banana plug into the other in order to short the deployment harness leads.
22. If the pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
23. Put on a pair of shop gloves.
24. Disconnect the pigtail adapter from the pretensioner as soon as possible.
25. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
26. Dispose of the deployed pretensioner through normal refuse channels.
27. Wash hands with a mild soap.

Scheme 17

The supplemental inflatable restraint (SIR) system supplements the protection offered by the occupants seat belt system (2). The SIR system may contain several inflator modules located throughout the vehicle, i.e. steering wheel module (1), instrument panel (I/P) module (1), or side impact modules. In addition to inflator modules, the vehicle may contain seat belt pretensioners that tighten the seat belt in the event of a collision, thus reducing the distance between the occupant and the seat belt when an inflator module is deployed. Each inflator module has a deployment loop that is controlled by the sensing and diagnostic module (SDM) mounted inside the vehicle. The SDM determines the severity of a collision with the assistance of various sensor inputs located at strategic points on the vehicle. When the SDM detects a collision of sufficient force it will process the information provided by the sensors to further support air bag deployment. The SDM performs continuous diagnostic monitoring of the SIR system electrical components. Upon detection of a circuit malfunction, the SDM will set a DTC and inform the driver by turning the AIR BAG indicator ON. The steering column (1) and knee bolsters (3) are designed to absorb energy and compress during frontal collisions in order to limit leg movement and decrease the chance of injury to the driver and passenger. After an Air Bag deployment, the SDM will send out a post-air message to the Rear Integration Module (RIM). The RIM will unlock the doors and turn ON the interior lights 15 seconds after receipt of this message.

Frontal SIR System Description

The frontal SIR system consists of the following components

1. AIR BAG indicator located in the instrument panel cluster (IPC)
2. Driver and passenger knee bolsters
3. Inflatable restraint front end sensors (Left/Right)
4. Inflatable restraint instrument panel (I/P) module
5. Inflatable restraint sensing and diagnostic module (SDM)
6. Inflatable restraint steering wheel module
7. Inflatable restraint steering wheel module coil
8. Inflatable restraint seat belt pretensioners
9. Inflatable restraint wiring harnesses
10. Steering wheel and column

A frontal collision of sufficient force up to 30 degrees off the longitudinal centerline of the vehicle will deploy the frontal air bags. The SDM contains a sensing device that converts vehicle velocity changes to an electrical signal. In the event of a frontal collision, the SDM receives a signal from the electronic frontal sensor, which assists the SDM in determining the severity of the collision. The SDM compares these signals to a value stored in memory. When the generated signals exceed the stored value, the SDM will cause current to flow through the frontal deployment loops simultaneously deploying the frontal air bags. The SDM, I/P module, steering wheel module, steering wheel module coil and the connecting wires makeup the frontal deployment loops. The SDM continuously monitors the deployment loops for malfunctions and turns the AIR BAG indicator ON if a fault is detected.

Inflatable Restraint Sensing and Diagnostic Module (SDM)

The sensing and diagnostic module (SDM) is a microprocessor and the control center for the SIR system. The SDM contains internal sensors along with several external sensors, if equipped, mounted at strategic locations on the vehicle. In the event of a collision, the SDM compares the signals from the internal and external sensors to a value stored in memory. When the generated signals exceed the stored value, the SDM will cause current to flow through the appropriate deployment loops to deploy the air bags. The SDM records the SIR system status when a deployment occurs and turns the AIR BAG indicator located in the IPC ON. The SDM performs continuous diagnostic monitoring of the SIR system electrical components and circuitry when the ignition is turned ON. If the SDM detects a malfunction, a DTC will be stored and the SDM will command the AIR BAG indicator ON, notifying the driver that a malfunction exist. In the event that ignition positive voltage is lost during a collision, the SDM maintains a 23-volt loop reserve (23 VLR) for deployment of the air bags. It is important when disabling the SIR system for servicing or rescue operations to allow the 23 VLR to dissipate, which could take up to 1 minute.

AIR BAG Indicator

The AIR BAG indicator, located in the instrument panel cluster (IPC) is used to notify the driver of SIR system malfunctions and to verify that the sensing and diagnostic module (SDM) is communicating with the IPC. When the ignition is turned ON, the SDM is supplied with ignition positive voltage. The SDM requests the IPC to flash the AIR BAG indicator seven times. While flashing the indicator, the SDM conducts test on all SIR system components and circuits. If no malfunctions are detected the SDM will communicate with the IPC through the GMLAN communication circuit and command the AIR BAG indicator OFF. The SDM provides continuous monitoring of the air bag circuits by conducting a sequence of checks. If a malfunction is detected the SDM will store a diagnostic trouble code (DTC) and command the IPC to turn the AIR BAG indicator ON via class 2 serial data and a SERVICE AIR BAG message will be displayed on the driver information center (DIC). The presence of a SIR system malfunction could result in non-deployment of the air bags or deployment in conditions less severe than intended. The AIR BAG indicator and the SERVICE AIR BAG message on the DIC will remain ON until the malfunction has been repaired.

Dual Stage Inflator Modules

Dual stage inflator modules contain a housing, inflatable air bag, two initiating devices, canister of gas generating material and, in some cases, stored compressed gas. The two initiators are part of the frontal deployment loop. The function of the frontal deployment loops are to supply current through the steering wheel and instrument panel (I/P) inflator modules to deploy the air bags. The inflator modules have two stages of deployment, which varies the amount of restraint to the occupant according to the collision severity. For moderate frontal collisions the inflator modules deploy at less than full deployment (low deployment) which consists of stage 1 of the inflator module. For more severe frontal collisions a full deployment is initiated which consists of stage 1 and stage 2 of the inflator module. The current passing through the initiators ignites the material in the canister producing a rapid generation of gas and is some cases, the release of compressed gas. The gas produced from this reaction rapidly inflates the air bag. Once the air bag is inflated it quickly deflates through the air bag vent holes and/or the bag fabric.

Each dual stage inflator modules is equipped with a shorting bar located in the connector(s) of the module. The shorting bar shorts the inflator module deployment loop circuitry to prevent unwanted deployment of the air bag when it is disconnected.

Inflatable Restraint Steering Wheel Module Coil

The steering wheel module coil is attached to the steering column and is located under the steering wheel. The steering wheel module coil consists of two or more current-carrying coils. The coils allow the rotation of the steering wheel while maintaining continuous electrical contact between the driver deployment loop and the steering wheel module. Two or four, if equipped with dual stage air bags, coil wires are used for the steering wheel module deployment loop. Additional coil wires are used for accessories attached to the steering wheel depending on the vehicle model. The steering wheel module coil connector is located near the base of the steering column. The connector contains a shorting bar that shorts the steering wheel module coil deployment loop circuitry to prevent unwanted deployment of the air bag when servicing the inflator module.

Inflatable Restraint Front End Sensor

The front end sensor also known as the electronic frontal sensor (EFS) is equipped on vehicles to supplement the SIR system performance. The EFS is an electronic sensor (accelerometer) and is not part of the deployment loops, but instead provides an input to the sensing and diagnostic module (SDM). The EFS can assist in determining the severity of some frontal collisions. The SDM contains a microprocessor which performs calculations using the measured accelerations and compares these calculations to a value stored in memory. When the generated calculations exceed the stored value, the SDM will cause current to flow through the frontal deployment loops deploying the frontal air bags.

Inflatable Restraint Seat Belt Pretensioner

The seat belt pretensioner modules contain a housing, an initiating device, canister of gas generating material. The initiator is part of the seat belt pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the sensing and diagnostic module (SDM) will cause current to flow through the deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas and the release of compressed gas, if present. The gas produced from this reaction rapidly shortens the seat belt buckle height.

Each seat belt pretensioner is equipped with a shorting bar located on the connector of the pretensioner. The shorting bar shorts the seat belt pretensioner deployment loop circuitry to prevent unwanted deployment of the pretensioner when servicing the seat belt pretensioner.

Inflatable Restraint Wiring Harness

The inflatable restraint wiring harnesses connect the inflators modules, sensing and diagnostic module (SDM), deployment loops, and GMLAN communication together using weather pack connectors. SIR system connectors are yellow in color for easy identification. When repairing the SIR wiring harnesses follow the proper testing and wiring repair procedures listed in this manual.

Steering Column and Wheel

The steering wheel and columns are designed to absorb energy when driver contact is made with the steering wheel or inflated air bag. In a frontal collision the driver may come in contact with the steering wheel directly or load the steering wheel and column through the inflated air bag. When the driver applies load to the air bag or the steering wheel the column will compress downward absorbing some of the impact, helping to reduce bodily injuries to the driver. The steering wheel and column must be inspected for damages after a collision.

Knee Bolster

The knee bolsters are designed to help restrain the lower torso of front seat occupants by absorbing the energy through the front seat occupant's upper legs. In a frontal collision the front seat occupant legs may come in contact with the knee bolsters. The knee bolsters are designed to crush or deform, absorbing some of the impact, which helps to reduce bodily injuries. The driver and passenger knee bolsters are located in the lower part of the instrument panel and must be inspected for damages after a collision.

Side SIR System Description

The side SIR system consists of the following components

1. AIR BAG indicator located in the instrument panel cluster (IPC)
2. Inflatable restraint sensing and diagnostic module (SDM)
3. Inflatable restraint side impact modules (LF/RF)
4. Inflatable restraint side impact sensors (SIS) (left/right)
5. Inflatable restraint roof rail modules (left/right)
6. Inflatable restraint wiring harnesses

The side impact modules are located in the outside portion of the front seat backs and the roof rail modules are located under the headliner extending from the front windshield pillar to the rear window pillar. The side impact modules and the roof rail modules contain a housing, inflatable air bag, initiating device, and a canister of gas generating material. The initiator is part of the side impact and roof rail module deployment loop. When a side impact of sufficient force occurs the SIS detects the impact and sends a signal to the SDM. The SDM compares the signal received from the SIS to a value stored in memory. When the generated signal exceeds the stored value, the SDM will cause current to flow through the side deployment loop deploying the side and the roof rail air bags. The SDM, side impact modules, roof rail modules and the connecting wires makeup the side deployment loops. The SDM continuously monitors the deployment loops for malfunctions and turns the AIR BAG indicator ON if a fault is present.

Each side impact and roof rail module is equipped with a shorting bar located on the connector of the module. The shorting bar shorts the side impact and roof rail modules deployment loop circuitry to prevent unwanted deployment of the air bag when servicing the inflator module.

Inflatable Restraint Side Impact Sensor (SIS)

The side impact sensor (SIS) contains a sensing device which monitors vehicle acceleration and velocity changes to detect side collisions that are severe enough to warrant air bag deployment. The SIS is not part of the deployment loop, but instead provides an input to the sensing and diagnostic module (SDM). The SDM contains a microprocessor that performs calculations using the measured accelerations and compares these calculations to a value stored in memory. When the generated calculations exceed the stored value, the SDM will cause current to flow through the deployment loops deploying the side air bags.

Special Tools

Special Tools Illustration Tool Number/Description J 38715-A Driver/Passenger SIR Load Tool J 38826 SIR Deployment Harness J 39401-B SIR Deployment Fixture J 44298 Driver Air Bag Removal Tool J 45289 CANdi Module

Scheme 18

See also:
• Diagnostic System Check - Vehicle
• DTC Symptom Description
• Testing for Intermittent Conditions and Poor Connections
• Connector Repairs
• Control Module References
• Circuit Testing
• Wiring Repairs
• Charging System Test
• Checking Aftermarket Accessories
• Seat Cushion Replacement - Rear
• Carpet Retainer Replacement - Rear
• Closeout/Insulator Panel Replacement - Left
• SIR Caution
• SIR Inflator Module Handling and Storage Caution
• Steering Wheel Replacement
• Inflatable Restraint Steering Wheel Module Coil Centering
• Fastener Notice
• Steering Column Accident Damage Inspection
• Repairs and Inspections Required After a Collision
• SIR Inflator Module Disposal Caution
• SIR Deployed Inflator Modules Are Hot Caution
• SIR Inflatable Module Deployment Outside Vehicle Caution
• SIR Disabling and Enabling Zones
• SIR Schematics
• SIR Connector End Views
• Special Tools
• SIR Service Precautions
• SIR Zone Identification Views