Supplemental Inflatable Restraint System Cadillac CTS 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 .

Scheme 9

SIR Connector End Views

Inflatable Restraint Front End Discriminating Sensor Connector End Views Connector Part Information 15356727 2-Way F GT 150 Series Sealed 4.0 (YE) Pin Wire Color Circuit Number Function A TN/OG 5045 Discriminating Sensor - Low Reference B YE 1834 Forward Discriminating Sensor Signal

Inflatable Restraint I/P Module Connector End Views Connector Part Information 15336476 4-Way M Metri-Pack 280 Series (YE) Pin Wire Color Circuit Number Function A1 YE 3025 I/P Module - Stage 1 - High Control A2 OG 3024 I/P Module - Stage 1 - Low Control B1 GY 3027 I/P Module - Stage 2 - High Control B2 PU 3026 I/P Module - Stage 2 - Low Control

Inflatable Restraint Roof Rail Module Connector End Views - Driver Connector Part Information 12186799 2-Way M Metri-Pack 280 Series (YE) Pin Wire Color Circuit Number Function A PU/WH 5019 Roof Rail Module - Driver - High Control B PK 5020 Roof Rail Module - Driver - Low Control

Inflatable Restraint Roof Rail Module Connector End Views - Passenger Connector Part Information 12186799 2-Way M Metri-Pack 280 Series (YE) Pin Wire Color Circuit Number Function A YE/BK 5021 Roof Rail Module - Passenger - High Control B WH/BK 5022 Roof Rail Module - Passenger - Low Control

Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector End Views Connector Part Information 15453747 42-Way M Micro-Pack 100 Series Sealed (YE) Pin Wire Color Circuit Number Function 1 PK 1139 Ignition 1 Voltage 2 - - Not Used 3 TN/WH 238 Seat Belt Switch - Driver - Signal 4 - - Not Used 5 YE 1834 Forward Discriminating Sensor Signal 6 - - Not Used 7 YE 2131 Side Impact Sensing Module - Driver - Voltage 8 TN 2133 Side Impact Sensing Module - Passenger - Voltage 9 YE 3025 I/P Module - Stage 1 - High Control 10 OG 3024 I/P Module - Stage 1 - Low Control 11 PK 5017 Seat Belt Switch - Driver - Low Reference 12 BN 3020 Steering Wheel Module - Stage 1 - Low Control 13 TN 3021 Steering Wheel Module - Stage 1 - High Control 14 GY 2103 Side Impact Module - Passenger - High Control 15 D-BU 2104 Side Impact Module - Passenger - Low Control 16 BN 2106 Side Impact Module - Driver - Low Control 17 D-GN 2105 Side Impact Module - Driver - High Control 18 YE/BK 5021 Roof Rail Module - Passenger - High Control 19 WH/BK 5022 Roof Rail Module - Passenger - Low Control 20 PK 5020 Roof Rail Module - Driver - Low Control 21 PU/WH 5019 Roof Rail Module - Driver - High Control 22 PU 1807 Class 2 Serial Data 23 PU 1807 Class 2 Serial Data 24-25 - - Not Used 26 TN/OG 5045 Discriminating Sensor - Low Reference 27 - - Not Used 28 WH 2132 Side Impact Sensing Moduler - Driver - Signal 29 D-GN 2134 Side Impact Sensing Module - Passenger - Signal 30 GY 3027 I/P Module - Stage 2 - High Control 31 PU 3026 I/P Module - Stage 2 - Low Control 32 BK/WH 1751 Ground 33 PK 3022 Steering Wheel Module - Stage 2 - Low Control 34 WH 3023 Steering Wheel Module - Stage 2 - High Control 35 L-GN 2116 Seat Belt Pretenstioner - Passenger - High Control 36 OG 2117 Seat Belt Pretenstioner - Passenger - Low Control 37 OG/BK 2119 Seat Belt Pretenstioner - Driver - Low Control 38 TN/WH 2118 Seat Belt Pretenstioner - Driver - High Control 39-42 - - Not Used

Inflatable Restraint Side Impact Module Connector End Views - Driver Connector Part Information CA-252-92-5 Q 2-Way F (YE) Pin Wire Color Circuit Number Function 1 WH 2105 Side Impact Module - Driver - High Control 2 D-GN 2106 Side Impact Module - Driver - Low Control

Inflatable Restraint Side Impact Module Connector End Views - Passenger Connector Part Information CA-252-92-5 Q 2-Way F (YE) Pin Wire Color Circuit Number Function 1 WH 2103 Side Impact Module - Passenger - High Control 2 D-GN 2104 Side Impact Module - Passenger - Low Control

Inflatable Restraint Side Impact Sensing Module (SISM) Connector End Views - Driver Connector Part Information 15356725 2-Way F Metri-Pack 150 Series (YE) Pin Wire Color Circuit Number Function A WH 2132 Side Impact Sensing Module - Driver - Signal B YE 2131 Side Impact Sensing Module - Driver - Voltage

Inflatable Restraint Side Impact Sensing Module (SISM) Connector End Views - Passenger Connector Part Information 15356725 2-Way F Metri-Pack 150 Series (YE) Pin Wire Color Circuit Number Function A D-GN 2134 Side Impact Sensing Module - Passenger - Signal B TN 2133 Side Impact Sensing Module - Passenger - Voltage

Inflatable Restraint Steering Wheel Module C1 Connector End Views Connector Part Information CA-252-92-4 R 2-Way F (GY/YE) Pin Wire Color Circuit Number Function 1 TN 3021 Steering Wheel Module - Stage 1 - High Control 2 BN 3020 Steering Wheel Module - Stage 1 - Low Control

Inflatable Restraint Steering Wheel Module C2 Connector End Views Connector Part Information CA-252-92-5 Q 2-Way F (PU/YE) Pin Wire Color Circuit Number Function 1 WH 3023 Steering Wheel Module - Stage 2 - High Control 2 PK 3022 Steering Wheel Module - Stage 2 - Low Control

Seat Belt Pretensioner Connector End Views - Driver Connector Part Information CA-252-92-4 R 2-Way F (YE) Pin Wire Color Circuit Number Function 1 BK 2118 Seat Belt Pretensioner - Driver - High Control 2 WH 2119 Seat Belt Pretensioner - Driver - Low Control

Seat Belt Pretensioner Connector End Views - Passenger Connector Part Information CA-252-92-4 R 2-Way F (YE) Pin Wire Color Circuit Number Function 1 BK 2116 Seat Belt Pretensioner - Passenger - High Control 2 WH 2117 Seat Belt Pretensioner - Passenger - Low Control

Diagnostic Starting Point - SIR

Begin the system diagnosis with Diagnostic System Check - SIR . The Diagnostic System Check - SIR 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 Diagnostic System Check - SIR will identify the correct procedure for diagnosing the system and where the procedure is located.

Diagnostic System Check - SIR

These diagnostic procedures will help you to find and repair SIR system malfunctions. For best results, use the diagnostic tables and follow the sequence listed below

1. Refer to the diagnostic table as directed by a diagnostic system check - SIR. The diagnostic tables will help you to diagnose any SIR system malfunction. Bypassing these procedures may result in the following: Extended Diagnostic Time Incorrect Diagnosis Incorrect Parts Replacement
2. Repeat a diagnostic system check - SIR after you perform any repair or diagnostic procedures. This will verify that you correctly performed the repair. This will also ensure that no other malfunctions exist.

Test Description

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

1. 1: Tests to see if the AIR BAG indicator flashes when the ignition is turned ON. The AIR BAG indicator should turn OFF after flashing 6 to 10 times.
2. 2: Tests to see if the scan tool powers up.
3. 3: Tests to see if the scan tool can communicate with the inflatable restraint sensing and diagnostic module (SDM).
4. 4: Tests to see if there are current or history diagnostic trouble codes (DTCs) present.
5. 5: Tests to see if there are communication DTCs (U-codes) present.
6. 6: Tests to see if DTC B1000 (ECU Malfunction) is present.

Diagnostic System Check - SIR

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.

Diagnostic Trouble Code (DTC) List

Diagnostic Trouble Code (DTC) List

Circuit Description

The passenger deployment loop consists of the following components

1. A dual stage inflatable restraint I/P module
2. The I/P module high circuits for both stages 1& 2
3. The I/P module low circuits for both stages 1& 2

There are 2 shorting bar used within the I/P module connector which will short together both I/P module stage 1high 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.

Conditions for Running the DTC

Ignition 1 voltage is within the normal operating voltage range.

Conditions for Setting the DTC

1. DTC B0012-stage 2 or B0016-stage 1 will set when the I/P module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0013-stage 2 or B0017-stage 1 will set when one of the following conditions occurs: I/P module high circuit is less than 2.4 volts and the I/P module deployment loop is more than 6 ohms for 500 milliseconds. I/P module deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0014-stage 2 or B0018-stage 1 will set when one of the following conditions occur: I/P module high and/or low circuits is short to ground or short to voltage for 500 milliseconds. I/P module high circuit is less than 2.4 volts and I/P module deployment loop resistance is less than 6 ohms for 500 milliseconds.

Action Taken When the DTC Sets

The SDM commands the AIR BAG indicator ON via Class 2 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 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 number(s) below refer to the step number(s) on the diagnostic table.

1. 4: Tests to see if the malfunction is caused by the IP module.
2. 6: Tests to see what DTCs are present. If DTC B0012 or B0016 is present, test the I/P module for a short between high and low circuits in stage 1 or stage 2. If DTC B0013 or B0017 is present, test the I/P module high and low circuits for an open and for high resistance in stage 1 or stage 2. If DTC B0014 or B0018 is present, test the I/P module high and low circuits for a short to ground and for a short to voltage in stage 1 or stage 2.

DTC B0012, B0013, B0014, B0016, B0017, or B0018

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& 2
4. The steering wheel module low circuits for both stages 1& 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 1low 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0022-stage 1 or B0042-stage 2 will set when the steering wheel module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0024-stage 1 or B0043-stage 2 will set when one of the following conditions occur: Steering wheel module high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Steering wheel module high circuit is less than 2.4 volts and steering wheel module deployment loop resistance is less than 6 ohms for 500 milliseconds.
3. DTC B0026-stage 1 or B0044-stage 2 will set when one of the following conditions occurs: Steering wheel module high circuit is less than 2.4 volts and the steering wheel module deployment loop is more than 6 ohms for 500 milliseconds. Steering wheel module deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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 steering wheel module stage 1or 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.

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 B0022 or B0042 is present, test the steering wheel module for a short between high and low circuits in stage 1or stage 2. If DTC B0024 or B0043 is present, test the steering wheel module high and low circuits for an open and for high resistance in stage 1 or stage 2. If DTC B0026 or B0044 is present, test the steering wheel module high and low circuits for an open and for high resistance in stage 1 or stage 2.

DTC B0022, B0024, B0026, B0042, B0043, or B0044

The passenger side deployment loop consists 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0028 will set when the side impact module-RF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0029 will set when one of the following conditions occurs: Side impact module-RF high circuit is less than 2.4 volts and the side impact module-RF deployment loop is more than 6 ohms for 500 milliseconds. Side impact module-RF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0030 will set when one of the following conditions occur: Side impact module-RF high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Side impact module-RF high circuit is less than 2.4 volts and side impact module-RF deployment loop resistance is less than 6 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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-RF
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. 5: Tests to see if the malfunction is caused by the side impact module-RF or by the side impact module-RF wiring harness.
2. 7: Tests to see what DTCs are present. If DTC B0028 s present, test the side impact module-RF for a short between high and low circuits. If DTC B0029 is present, test the side impact module-RF high and low circuits for an open and for high resistance. If DTC B0030 is present, test the side impact module-RF high and low circuits for a short to ground or a short to voltage.

DTC B0028, B0029, or B0030

The driver side deployment loop consists 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0040 will set when the side impact module-LF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0041 will set when one of the following conditions occurs: Side impact module-LF high circuit is less than 2.4 volts and the side impact module-LF deployment loop is more than 6 ohms for 500 milliseconds. Side impact module-LF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0045 will set when one of the following conditions occur: Side impact module-LF high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Side impact module-LF high circuit is less than 2.4 volts and side impact module-LF deployment loop resistance is less than 6 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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-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-LF
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. 5: Tests to see if the malfunction is caused by the side impact module-LF or by the side impact module-LF wiring harness.
2. 7: Tests to see what DTCs are present. If DTC B0040 s present, test the side impact module-LF for a short between high and low circuits. If DTC B0041 is present, test the side impact module-LF high and low circuits for an open and for high resistance. If DTC B0045 is present, test the side impact module-LF high and low circuits for a short to ground or a short to voltage.

DTC B0040, B0041, or B0045

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 two of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the air bags and causing DTC B0051 to set.

This DTC is set when the inflatable restraint sensing and diagnostic module (SDM) has commanded an air bag deployment with no faults present.

Ignition 1 voltage must be present.

Ignition voltage must be present and the inflatable restraint sensing and diagnostic module (SDM) must have commanded an air bag deployment.

1. The SDM sets a DTC B0051.
2. The SDM commands the AIR BAG warning lamp ON via Class 2 serial data.
3. The SDM records crash data.

DTC B0051 is a latched code. You cannot clear a latched code. Replace the SDM after following the instructions in the diagnostic table.

DTC B0051

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 two 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 B0051 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.

SDM must be powered up.

SDM commands inflators deployment with loop faults present.

1. The SDM sets DTC B0051.
2. The SDM sets DTC B0053.
3. The SDM commands the AIR BAG warning lamp ON via Class 2 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 DTC(s), other than B0051, repair the malfunction causing the other DTC(s) before replacing SDM.

DTC B0053

The passenger seat belt pretensioner deployment loop consists of an seat belt pretensioner-RF, the seat belt pretensioner-RF high and seat belt pretensioner-RF low circuits. 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0057 will set when the seat belt pretensioner-RF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0058 will set when one of the following conditions occurs: Seat belt pretensioner-RF high circuit is less than 2.4 volts and the seat belt pretensioner-RF deployment loop is more than 6 ohms for 500 milliseconds. Seat belt pretensioner-RF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0059 when one of the following conditions occur: Seat belt pretensioner-RF high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Seat belt pretensioner-RF high circuit is less than 2.4 volts and seat belt pretensioner-RF deployment loop resistance is less than 6 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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 number()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 B0057 is present, test the seat belt pretensioner-RF for a short between high and low circuits. If DTC B0058 is present, test the seat belt pretensioner-RF high and low circuits for an open and for high resistance. If DTC B0059 is present, test the seat belt pretensioner-RF high and low circuits for a short to ground and for a short to voltage.

DTC B0057, B0058, or B0059

The driver roof rail deployment loop consists of an inflatable restraint roof rail module-left, the roof rail module-left high and roof rail module-left low circuits. A shorting bar used within the roof rail module connector which will short together both roof side 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0061 will set when the roof rail module-left deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0062 will set when one of the following conditions occurs: Roof rail module-left high circuit is less than 2.4 volts and the roof rail module-left deployment loop is more than 6 ohms for 500 milliseconds. Roof rail module-left deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0068 when one of the following conditions occur: Roof rail module-left high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Roof rail module-left high circuit is less than 2.4 volts and roof rail module-left deployment loop resistance is less than 6 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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 B0061 is present, test the roof rail module-left for a short between high and low circuits. If DTC B0062 is present, test the roof rail module-left high and low circuits for an open and for high resistance. If DTC B0068 is present, test the roof rail module-left high and low circuits for a short to ground and for a short to voltage.

DTC B0061, B0062, or B0068

The driver seat belt pretensioner deployment loop consists of an seat belt pretensioner-LF, the seat belt pretensioner-LF high and seat belt pretensioner-LF low circuits. 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0064 will set when the seat belt pretensioner-LF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0065 will set when one of the following conditions occurs: Seat belt pretensioner-LF high circuit is less than 2.4 volts and the seat belt pretensioner-LF deployment loop is more than 6 ohms for 500 milliseconds. Seat belt pretensioner-LF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0066 when one of the following conditions occur: Seat belt pretensioner-LF high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Seat belt pretensioner-LF high circuit is less than 2.4 volts and seat belt pretensioner-LF deployment loop resistance is less than 6 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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 B0064 is present, test the seat belt pretensioner-LF for a short between high and low circuits. If DTC B0065 is present, test the seat belt pretensioner-LF high and low circuits for an open and for high resistance. If DTC B0066 is present, test the seat belt pretensioner-LF high and low circuits for a short to ground and for a short to voltage.

DTC B0064, B0065, or B0066

The passenger roof rail deployment loop consists of an inflatable restraint roof rail module-right, the roof rail module-right high and roof rail module-right low circuits. 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.

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0069 will set when the roof rail module-right deployment loop resistance is less than 1.3 ohms for 500 milliseconds.
2. DTC B0070 will set when one of the following conditions occurs: Roof rail module-right high circuit is less than 2.4 volts and the roof rail module-right deployment loop is more than 6 ohms for 500 milliseconds. Roof rail module-right deployment loop resistance is more than 4.8 ohms for 500 milliseconds.
3. DTC B0071 when one of the following conditions occur: Roof rail module-right high and/or low circuits is short to ground or short to voltage for 500 milliseconds. Roof rail module-right high circuit is less than 2.4 volts and roof rail module-right deployment loop resistance is less than 6 ohms for 500 milliseconds.

The SDM commands the AIR BAG indicator ON via Class 2 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 B0069 is present, test the roof rail module-right for a short between high and low circuits. If DTC B0070 is present, test the roof rail module-right high and low circuits for an open and for high resistance. If DTC B0071 is present, test the roof rail module-right high and low circuits for a short to ground and for a short to voltage.

DTC B0069, B0070, or B0071

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).

Ignition 1 voltage is within the normal operating voltage range.

1. DTC B0077 for the SIS-LF or B0078 for the SIS-RF will set when one of the following conditions occur: A valid ID message is not received within 5 seconds of the SIS being powered up. Status message is not received. The SDM has reset the SIS twice without detecting a valid ID message.
2. DTC B0079 for the SIS-LF or B0081 for the SIS-RF will set when one of the following conditions occur: The SDM has received an ID message from the SIS which does not match the ID stored in the SDM memory. The SDM has reset the SIS twice without detecting a correct ID message.
3. DTC B0080 for the SIS-LF or B0082 for the SIS-RF will set when the SDM has received a NOK message from the SIS.

The SDM commands ON the AIR BAG warning lamp via Class 2 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 conditions that may cause the malfunction

1. A short to ground or voltage in the SIS circuit
2. High or low resistance in the SIS circuit
3. Improper SIS installed on vehicle

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 B0077, B0078, B0079, B0080, B0081, or B0082

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 resets the front end sensor twice by removing and reapplying power to it. If the fault is still present, the SDM will set a diagnostic trouble code (DTC).

Ignition 1 Voltage is within the normal operating voltage range.

1. DTC B0100 for the front end sensor will set when one of the following conditions occur: A valid ID message is not received within 5 seconds of the front end sensor being powered up. Status message is not received. The SDM has reset the front end sensor twice without detecting a valid ID message.
2. DTC B0101 for the front end sensor will set when the SDM has received a NOK message from the front end sensor.
3. DTC B0102 for the front end sensor will set when one of the following conditions occur: The SDM has received an ID message from the front end sensor which does not match the ID stored in the SDM memory. The SDM has reset the front end sensor twice without detecting a correct ID message.

The SDM commands ON the AIR BAG warning lamp via Class 2 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 conditions that may cause the malfunction

1. A short to ground or voltage in the front end sensor circuit
2. High or low resistance in the front end sensor circuit
3. Improper front end sensor installed on vehicle

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

DTC B0100, B0101, or B0102

When the ignition is turned ON the inflatable restraint sensing and diagnostic module (SDM) compares the restraint ID that is stored in the SDM to the restraints ID that is stored in the Dash Integration Module (DIM). The restraints ID that is being compared to contains the last four digits of SDM part number. The SDM receives these messages and compares them to information stored in memory, this DTC is set when the SDM receives a restraints ID over the class 2 communication circuit from the DIM that is different from the ID that is stored in the SDM memory.

Ignition 1 voltage is within the normal operating voltage range.

1. The restraints ID that is stored in the SDM does not match the restraints ID that is stored in the DIM.
2. This test is only run once during power initialization.

1. The SDM commands ON the AIR BAG warning lamp via Class 2 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 DIM.

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

The numbers below 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 Vehicle Information Numbers (VIN) is programmed in the DIM.
3. 4: This step explains that the DIM must be programmed.
4. 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

Symptoms - SIR

1. Perform «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) before using the symptom tables in order to verify that all of the following are true: There are no DTCs set. The inflatable restraint sensing and diagnostic module (SDM) can communicate via the serial data link.
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/cts/i-2002-2007/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/cts/i-2002-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__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 (I/P). The AIR BAG warning indicator is controlled by the SDM via Class 2 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 seven 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 10

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 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 sensor

Disabling Procedure

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. Open front hood, and locate the front end sensor also known as the electronic frontal sensor (EFS) (2).
8. Remove the connector position assurance (CPA) from the EFS connector.
9. Remove the EFS connector from the EFS (2).

Enabling Procedure

1. Remove the key from the ignition switch.
2. Connect the EFS connector to the EFS (2).
3. Connect the CPA to the EFS connector.
4. Install the SIR fuse into the right rear fuse center (1).
5. Install the right rear fuse center cover.
6. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
7. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
8. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. When disabling the roof rail module go to step 8, if the side impact sensor (SIS) needs disabling then go to step 11.
8. Remove the left rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
9. Remove the connector position assurance (CPA) (3) from the left/driver roof rail module connector (2).
10. Disconnect the left roof rail module yellow connector (1) from the vehicle harness yellow connector (2).
11. Remove the left center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
12. Remove the SIS CPA (1) from the left SIS connector (2).
13. Remove the SIS connector (2) from the SIS (3).

1. Remove the key from the ignition switch.
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/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Connect the left roof rail module yellow connector (1) to the vehicle harness yellow connector (2).
7. Install the CPA (3) to the left roof rail module connector (2).
8. Install the left rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
9. Install the SIR fuse into the right rear fuse center (1).
10. Install the right rear fuse center cover.
11. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
12. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
13. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. Remove the left/driver sound insulator from the instrument panel (I/P) (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
8. Remove the connector position assurance (CPA) from the steering wheel module coil yellow connector (1).
9. Disconnect the steering wheel module coil yellow connector (1) from the vehicle harness yellow connector (3).

1. Remove the key from the ignition switch.
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/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
5. Install the SIR fuse into the right rear fuse center (1).
6. Install the right rear fuse center cover.
7. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
8. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
9. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. Remove the right/passenger sound insulator from the instrument panel (I/P) (3). Refer to «Closeout/Insulator Panel Replacement - Right»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
8. Remove the connector position assurance (CPA) from the I/P module yellow connector (2).
9. Disconnect the I/P module yellow connector (1) from the vehicle harness yellow connector (2).

1. Remove the key from the ignition switch.
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 «Closeout/Insulator Panel Replacement - Right»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
5. Install the SIR fuse into the right rear fuse center (1).
6. Install the right rear fuse center cover.
7. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
8. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
9. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. When disabling the roof rail module go to step 8, if the side impact sensor (SIS) needs disabling then go to step 11.
8. Remove the right rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
9. Remove the connector position assurance (CPA) (1) from the right/passenger roof rail module connector (2).
10. Disconnect the right roof rail module yellow connector (3) from the vehicle harness yellow connector (2).
11. Remove the right center pillar trim panel. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
12. Remove the SIS CPA (1) from the right SIS connector (2).
13. Remove the SIS connector (2) from the SIS (3).

1. Remove the key from the ignition switch.
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/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Connect the right roof rail module yellow connector (3) to the vehicle harness yellow connector (2).
7. Install the CPA (1) to the right roof rail module connector (2).
8. Install the right rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
9. Install the SIR fuse into the right rear fuse center (1).
10. Install the right rear fuse center cover.
11. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
12. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
13. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. Remove both connector position assurance (CPA) from the LF/driver side impact module and seat belt pretensioner yellow connector (1) which is located under the front of driver seat.
8. Disconnect the LF side impact module and pretensioner yellow connector (1) from the vehicle harness yellow connector.

1. Remove the key from the ignition switch.
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 the SIR fuse into the right rear fuse center (1).
5. Install the right rear fuse center cover.
6. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
7. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
8. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. Remove the right rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
8. Remove the connector position assurance (CPA) (1) from the right/passenger roof rail module yellow connector (2).
9. Disconnect the right roof rail module yellow connector (3) from the vehicle harness yellow connector (2).
10. Remove the passenger/right sound insulator from the instrument Panel (I/P) (3). Refer to «Closeout/Insulator Panel Replacement - Right»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
11. Remove the CPA from the I/P module yellow connector (1).
12. Disconnect the I/P module yellow connector (1) from the vehicle harness yellow connector (2).
13. 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.
14. Disconnect the RF side impact module and pretensioner yellow connector from the vehicle harness yellow connector (1).
15. Remove the driver/left sound insulator from the instrument Panel (IP) (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
16. Remove the CPA from the steering wheel module coil yellow connector (1).
17. Disconnect the steering wheel module coil yellow connector (1) from the vehicle harness yellow connector (3).
18. 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.
19. Disconnect the LF side impact module and pretensioner yellow connector from the vehicle harness yellow connector (1).
20. Remove the left rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
21. Remove the CPA (3) from the left/driver roof rail module yellow connector (2).
22. Disconnect the left roof rail module yellow connector (1) from the vehicle harness yellow connector (2).

1. Remove the key from the ignition switch.
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 instrument Panel (I/P) (2). Refer to «Closeout/Insulator Panel Replacement - Left»(/cadillac/cts/i-2002-2007/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/driver roof rail module yellow connector (1) to the vehicle harness yellow connector (2).
8. Install the CPA (3) to the left roof rail module yellow connector (2).
9. Install the left rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
10. Connect the passenger/I/P module yellow connector (1) to the vehicle harness yellow connector (2).
11. Install the CPA to the I/P module yellow connector (1).
12. Install the passenger/right sound insulator to the instrument Panel (I/P) (3). Refer to «Closeout/Insulator Panel Replacement - Right»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
13. 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.
14. Install both CPA locks to the RF side impact module and pretensioner yellow connector (1).
15. Connect the passenger/right roof rail module yellow connector (3) to the vehicle harness yellow connector (2).
16. Install the CPA (1) to the right roof rail module yellow connector (2).
17. Install the right rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
18. Install the SIR fuse into the right rear fuse center (1).
19. Install the right rear fuse center cover.
20. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
21. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
22. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Remove the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Locate the right rear fuse center (1) under rear seat, then remove the fuse center top cover.
6. Locate and remove the SIR fuse from the right rear fuse center.
7. 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.
8. Disconnect the RF side impact module and pretensioner yellow connector (1) from the vehicle harness yellow connector.

1. Remove the key from the ignition switch.
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 the SIR fuse into the right rear fuse center (1).
5. Install the right rear fuse center cover.
6. Install the rear seat. Refer to «Seat Cushion Replacement - Rear»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
7. Use caution while reaching in and turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
8. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - SIR»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system__diagnostic-system-check-sir) .

Removal Procedure

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 1»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the connector position assurance (CPA) from the wiring harness connector to the inflatable restraint front end sensor (2).
3. Disconnect the wiring harness connector from the front end sensor (2).
4. Loosen the front end sensor mounting fastener (1), which is located in the upper tie bar.
5. Remove the front end sensor (2) from the upper tie bar.

Installation Procedure

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Position the sensor (2) 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 (1) 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. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 1»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 6»(/cadillac/cts/i-2002-2007/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/cts/i-2002-2007/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/cts/i-2002-2007/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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) or «SIR Disabling and Enabling Zone 6»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 8»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the center console. Refer to «Console Replacement - Front Floor»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
3. Remove the connector position assurance (CPA) (1) from the wiring harness connector (2) to the inflatable restraint sensing and diagnostic module (SDM).
4. Push the flex lock button (3) down and move the sliding connector locking cover (4) to the OPEN position.
5. Disconnect the wiring harness connector from the SDM (1).
6. Remove the SDM mounting fasteners (2).
7. Remove the SDM from the console floor.

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Install the SDM (1) horizontally to the console floor.
3. Point the arrow on the SDM toward the front of the vehicle.
4. Install the SDM mounting fasteners (2). Tighten: Tighten fasteners to 9 N.m (80 lb in).
5. Connect the wiring harness connector (1) to the SDM.
6. Push the flex lock button (3) down and move the sliding connector locking cover (4) to the CLOSE position.
7. Install the CPA (1) to the wiring harness connector (2) to the inflatable restraint SDM.
8. Install the console. Refer to «Console Replacement - Front Floor»(/cadillac/cts/i-2002-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages and Console.
9. Install the driver and the passenger seats to the original position.
10. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 8»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
11. Program the new SDM into the dash integration module. Refer to «Body Control Module (BCM) Programming/RPO Configuration (RIM)»(/cadillac/cts/i-2002-2007/remont/communication-devices/#body-control-system) or «Body Control Module (BCM) Programming/RPO Configuration (DIM)»(/cadillac/cts/i-2002-2007/remont/communication-devices/#body-control-system) in Body Control System.

Tools Required

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

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/cts/i-2002-2007/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 and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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/cts/i-2002-2007/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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for proper disposal.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the SIR system. Refer to «Inflatable Restraint Steering Wheel Module Replacement»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
3. Remove the upper and lower shrouds. Refer to «Steering Column Trim Covers Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
4. Remove the steering wheel. Refer to «Steering Wheel Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-wheel-replacement) in Steering Wheel and Column.
5. Remove the steering wheel column wire harness (1) from the wire harness straps (2).
6. Remove the retaining ring (3).
7. Remove the SIR coil (2) from the steering shaft.

1. Align the wheels straight ahead.
2. Center the SIR coil assembly (1), if needed. Refer to «Inflatable Restraint Steering Wheel Module Coil Centering»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__inflatable-restraint-steering-wheel-module-coil) in Steering Wheel and Column.
3. Install the existing SIR coil assembly (4) to the steering shaft assembly (2) following these steps: Position the SIR coil assembly (4) to the steering shaft assembly (2). Align the opening in the SIR coil assembly (4) with the horn tower and the locating bump between the 2 tabs on the lock housing cover and sleeve assembly. Seat the SIR coil assembly (4) onto the steering shaft assembly (2).
4. Install a new SIR coil assembly (4) to the steering shaft assembly (2) following these steps: Assemble the pre-centered SIR coil assembly (4) to the steering shaft assembly (2). Position the SIR coil assembly (4) to the steering shaft assembly (2). Align the opening in the SIR coil assembly (4) with the horn tower and the locating bump between the 2 tabs on the lock housing cover and sleeve assembly. Remove and discard the centering tab.
5. Install the retaining ring (3) to the steering shaft assembly (2).
6. Route the lower coil wire harness along the steering column.
7. Install the steering wheel column wire harness (1) to the wire harness straps (2).
8. Install the steering wheel. Refer to «Steering Wheel Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-wheel-replacement) in Steering Wheel and Column.
9. Remove the upper and lower shrouds. Refer to «Steering Column Trim Covers Replacement»(/cadillac/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
10. Install the SIR system. Refer to «Inflatable Restraint Steering Wheel Module Replacement»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
11. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 5»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the I/P retainer. Refer to «Instrument Panel (I/P) Retainer Replacement»(/cadillac/cts/i-2002-2007/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. Installing 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/cts/i-2002-2007/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/cts/i-2002-2007/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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for proper disposal.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/cts/i-2002-2007/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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/cts/i-2002-2007/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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/cts/i-2002-2007/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/cts/i-2002-2007/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/cts/i-2002-2007/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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for driver's seat or «SIR Disabling and Enabling Zone 9»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) for passenger seat.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
3. Remove the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Remove the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
5. Remove the connector position assurance (CPA) from the harness connector (1) to the inflatable restraint roof rail module.
6. Disconnect the harness connector (1) from the roof rail module.
7. Lower the headliner to gain clearance to the roof rail module.
8. Remove the fasteners (2) from the roof rail module.
9. 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 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 (1) 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/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Install the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Install the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 2»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 6»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the windshield garnish molding. Refer to «Garnish Molding Replacement - Windshield Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
3. Remove the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Remove the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
5. Remove the connector position assurance (CPA) from the harness connector (1) to the inflatable restraint roof rail module.
6. Disconnect the harness connector (1) from the roof rail module.
7. Lower the headliner to gain clearance to the roof rail module.
8. Remove the fasteners (2) from the roof rail module.
9. 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 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 (1) 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/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
6. Install the center pillar garnish moldings. Refer to «Garnish Molding Replacement - Center Pillar»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
7. Install the rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/cts/i-2002-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 6»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling Zone 9»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system)
2. Disconnect the pretensioner electrical connector from the side air bag connector.
3. Disconnect the electrical connector from the seat belt switch.
4. Remove the seat from the vehicle. Refer to «Seat Replacement - Bucket»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Remove the pretensioner trim cover by pulling out on the cover.
6. Remove the pretensioner fastener (2) and remove the pretensioner (1) from the seat.
7. 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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Install the pretensioner (1) to the seat. Notice that the pretensioner has a tab that fits into the seat in order to insure that the pretensioner is in the proper position.
2. Install the fastener (2) while holding the pretensioner in place. Tighten: Tighten the nut to 42 N.m (31 lb ft).
3. Install the pretensioner trim cover by aligning the tabs. Snap the tabs into place.
4. Install the seat into the vehicle. Refer to «Seat Replacement - Bucket»(/cadillac/cts/i-2002-2007/remont/seats/#seat-system) in Seats.
5. Carefully route the pretensioner pigtail harness and the seat belt wiring harness under the seat.
6. Connect the pretensioner electrical connector to the side air bag connector.
7. Connect the electrical connector to the seat belt switch.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 7»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling Zone 9»(/cadillac/cts/i-2002-2007/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/cts/i-2002-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-column-accident-damage-inspection) in Steering.
2. The 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/cts/i-2002-2007/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 sensor
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 IP 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 sensing and diagnostic module (SDM).
4. 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 11

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 two 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 vehicle's 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, IP Module, and Side Impact 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 and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. J 39401-B SIR Deployment Fixture. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing the I/P module, refer to «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a side impact module, refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a roof rail module, refer to «Inflatable Restraint Roof Rail Module Replacement - Left»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) and/or «Inflatable Restraint Roof Rail Module Replacement - Right»(/cadillac/cts/i-2002-2007/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 IP inflator module, refer to the following instructions: Place the J 39401-B SIR deployment fixture (2) in the center of the cleared area. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . 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 SIR deployment fixture (3) in the center of the cleared area. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . 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 SIR deployment fixture (3) in the center of the cleared area. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . 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 side impact module (1) to the deployment fixture (3).
12. Inspect the J 38826 and the appropriate pigtail adapter for damage. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . 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/cts/i-2002-2007/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 two 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/cts/i-2002-2007/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 two 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/cts/i-2002-2007/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 four 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 four 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 two 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/cts/i-2002-2007/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 two 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/cts/i-2002-2007/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 (1) from the vehicle harness connector (2).
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 IP 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 two 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/cts/i-2002-2007/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 steering wheel module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/cts/i-2002-2007/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 IP 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 four 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 four 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 two 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/cts/i-2002-2007/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 two 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/cts/i-2002-2007/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 (3) from the vehicle harness connector (2).
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/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Roof Rail Module Replacement - Left»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Roof Rail Module Replacement - Right»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system)

Scheme 12

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 and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
2. J 38826 SIR Deployment Harness. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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 «Seat Belt Buckle Pretensioner Replacement»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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 SIR Deployment Fixture in the center of the cleared area. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) .
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 SIR Deployment Harness and the appropriate pigtail adapter for damage. See «Special Tools and Equipment»(/cadillac/cts/i-2002-2007/remont/airbag/#supplemental-inflatable-restraint-system) . 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 13

The supplemental inflatable restraint (SIR) system supplements the protection offered by the occupant's 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 sensor
4. Inflatable restraint 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, IP 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 IPC is used to notify the driver of SIR system malfunctions and to verify that the 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 class 2 serial data 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 display 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 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 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, SDM, deployment loops, and class 2 serial data 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 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

See also:
• SIR Special Tool Caution
• Scan Tool Does Not Power Up
• DTC B1000
• Testing for Intermittent Conditions and Poor Connections
• Connector Repairs
• Circuit Testing
• Wiring Repairs
• Checking Aftermarket Accessories
• Diagnostic System Check - Engine Electrical
• Instrument Panel Cluster (IPC) Replacement
• Seat Cushion Replacement - Rear
• Sail Panel Replacement
• SIR Caution
• Fastener Notice
• SIR Inflator Module Handling and Storage Caution
• Steering Column Trim Covers Replacement
• Steering Wheel Replacement
• Inflatable Restraint Steering Wheel Module Coil Centering
• 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
• Diagnostic System Check - SIR
• Symptoms - SIR
• Diagnostic Trouble Code (DTC) List
• DTC B0012, B0013, B0014, B0016, B0017, or B0018
• SIR Connector End Views
• SIR Service Precautions
• SIR Zone Identification Views