Supplemental Inflatable Restraint System Cadillac XLR 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. 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 Identification Views

The SIR 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 for a given service procedure, refer to SIR Disabling and Enabling .

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SIR Connector End Views

Inflatable Restraint Front End Sensor - Left

Inflatable Restraint Front End Sensor - Right

SIR Connector End Views

Inflatable Restraint Front End Sensor - Right

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SIR Connector End Views

Inflatable Restraint I/P Module

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SIR Connector End Views

Inflatable Restraint I/P Module Disable Switch

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SIR Connector End Views

Inflatable Restraint I/P Module Disable Switch LED

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SIR Connector End Views

Inflatable Restraint Seat Position Switch - Left

Inflatable Restraint Seat Position Switch - Right

SIR Connector End Views

Inflatable Restraint Seat Position Switch - Right

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SIR Connector End Views

Inflatable Restraint Sensing and Diagnostic Module (SDM)

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SIR Connector End Views

Inflatable Restraint Side Impact Module - Left

Inflatable Restraint Side Impact Module - Right

SIR Connector End Views

Inflatable Restraint Side Impact Module - Right

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SIR Connector End Views

Inflatable Restraint Side Impact Sensor (SIS) - Left

Inflatable Restraint Side Impact Sensor (SIS) - Right

SIR Connector End Views

Inflatable Restraint Side Impact Sensor (SIS) - Right

Inflatable Restraint Steering Wheel Module C1

SIR Connector End Views

Inflatable Restraint Steering Wheel Module C1

Inflatable Restraint Steering Wheel Module C2

SIR Connector End Views

Inflatable Restraint Steering Wheel Module C2

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SIR Connector End Views

Inflatable Restraint Steering Wheel Module C3

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SIR Connector End Views

Passenger Presence System (PPS)

Seat Belt Pretensioner - Left

SIR Connector End Views

Seat Belt Pretensioner - Left

Seat Belt Pretensioner - Right

SIR Connector End Views

Seat Belt Pretensioner - Right

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

Diagnostic Starting Point - SIR

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

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

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

Introduction

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode the SDM will establish communication with the passenger presence system (PPS). The PPS will respond by performing diagnostic tests to check for proper circuit continuity and for shorts to ground and voltage within the PPS. If the PPS detects a malfunction, the PPS will set a DTC, then communicate through a non class 2 or GMLAN communications circuit to the SDM that a malfunction has occurred, while turning the passenger air bag status indicator to OFF. The SDM will respond by disabling the instrument panel (I/P) module deployment loop, setting DTC B0092 or B0098 and commanding the AIR BAG indicator ON. The SDM notify the driver of a PPS or SIR malfunction by turning ON the AIR BAG indicator on the cluster. The DTCs that the PPS set are non class 2 or GMLAN and have to be flashed through the PASSENGER AIR BAG ON/OFF indicators located in the rearview mirror. The procedures below are designed to assist in the flashing of these codes. Before you start, read these procedures carefully and completely. For further information regarding the PPS refer to SIR System Description and Operation .

Passenger Presence System (PPS) Flash Code Procedure

1. Empty the front outboard passenger seat.
2. Install a scan tool.
3. Turn ON the ignition, with the engine OFF.
4. With a scan tool, request the PPS to flash DTCs.
5. When the PPS receives a valid request to flash DTCs, the PPS will perform the following: Illuminate both PASSENGER AIR BAG ON and OFF indicators for 1 second. Turn OFF both PASSENGER AIR BAG ON and OFF indicators for 1 second. Flash the first number of the DTC using the OFF indicator. Count the number of times the OFF indicator flashes to obtain the first number of the DTC. Flash the second number of the DTC using the ON indicator. Count the number of times the ON indicator flashes to obtain the second number of the DTC. When the flashing procedure is initiated, to determine if a code is current or history, the PPS will flash current DTCs two times consecutively and flash history DTCs once.
6. If the flashing procedure was unsuccessful repeat this procedure. Due to the communication status between the SDM and the PPS module, this procedure may have to be repeated until a successful flashing attempt has been achieved.
7. Refer to the «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-trouble-code-dtc-list) , to diagnose the DTCs you have obtained.

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 Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit/System Description

The inflatable restraint seat belt tension sensor is a 3-wire potentiometer mounted on the retractor or buckle side of the seat belt and provides an input to the Passenger Presence System (PPS). When an infant car seat is properly restrained on the front passenger seat, the seat belt is tightly secured through the car seat. The seat belt pulls on the tension sensor and changes the voltage signal to the PPS module. The PPS monitors the seat belt tension sensor circuit and if a fault is detected, DTC 023 will be set. When the PPS detects this DTC within the PPS, it will notify the customer of the enable/disable status by turning ON the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. Then the PPS will communicate to the sensing and diagnostic module (SDM) through a non-class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS and will suppress the deployment of the instrument panel (I/P) module and then turn the AIR BAG indicator ON.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

1. The PPS detects the voltage at the passenger seat belt tension retractor sensor signal is less than 0.05 volt or greater than 4.5 volts for 500 milliseconds.
2. The PPS detects the voltage at the passenger seat belt tension retractor sensor 5-volt reference is less than 4.5 volts or greater than 9.1 volts for 500 milliseconds.
3. The PPS detects the amperage at the passenger seat belt tension retractor sensor low reference is 25 ma or greater for 500 milliseconds.

Action Taken When the DTC Sets

1. The PPS will set a DTC, and then communicate with the SDM.
2. The SDM will set DTC B0092.
3. The SDM disables the I/P module deployment loop.
4. The PPS will turn ON the passenger air bag status OFF indicator.
5. The SDM commands the AIR BAG indicator ON via serial data communication.

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

Inspect the passenger seat belt tension retractor sensor signal, 5-volt reference, and low reference circuits carefully for cutting and/or chafing.

Reference Information

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

Circuit/System Testing

1. Ignition OFF, disconnect the seat belt tension retractor sensor.
2. Disconnect the PPS module connector.
3. Test the seat belt tension retractor sensor signal circuit for a short to ground, a high resistance, or an open. Verify that a short to ground, a high resistance, or an open does not exist. If any of the above conditions are found make the appropriate repair.
4. Test the seat belt tension retractor sensor 5-volt reference circuit for a short to ground, a short to voltage, a high resistance, or an open. Verify that a short to ground, a short to voltage, a high resistance, or an open does not exist. If any of the above conditions are found make the appropriate repair.
5. Test the seat belt tension retractor sensor low reference circuit for a short to ground, a short to voltage, a high resistance, or an open. Verify that a short to ground, a short to voltage, a high resistance, or an open does not exist. If any of the above conditions are found make the appropriate repair
6. Ignition ON, engine OFF test the seat belt tension retractor sensor circuit with a DMM. Measure the voltage of the seat belt tension retractor sensor circuit harness side and ground. The voltage should read 0.05-4.5 volts. If the voltage is more than 5.0 volts test the seat belt tension retractor sensor circuit for a short to voltage. If the circuit tests good replace the PPS.
7. Reconnect all PPS components. Use the scan tool to clear all PPS DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Rezero the PPS, refer to «Passenger Presence System Rezeroing»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify DTC 023 does not exist. If DTC 023 reset replaced the PPS.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Seat Belt Retractor Replacement - Right Front»(/cadillac/xlr/i-2003-2009/remont/restraints-control-systems/#seat-belt-system)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for PPS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The Passenger Presence System (PPS) module has an ignition 1 voltage input. The PPS continually monitors itself for faults. If the voltage on this circuit falls below a certain threshold, the PPS will set DTC 024. When the PPS detects this DTC within the PPS it will notify the customer of the enable/disable status by turning ON the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. Then the PPS will communicate to the sensing and diagnostic module (SDM) through a non-class 2 communications circuit that a PPS fault is present. The SDM will then turn the AIR BAG indicator ON, and set DTC B0092 or B0098 indicating a problem within the PPS and will suppress the deployment of the instrument panel (I/P) module.

The PPS detects ignition 1 voltage is less than 8 volts for 500 milliseconds.

1. The PPS detects the voltage at the passenger seat belt tension retractor sensor signal is less than 0.05 volt or greater than 4.5 volts for 500 milliseconds.
2. The PPS detects the voltage at the passenger seat belt tension retractor sensor 5-volt reference is less than 4.5 volts or greater than 9.1 volts for 500 milliseconds.
3. The PPS detects the amperage at the passenger seat belt tension retractor sensor low reference is 25 ma or greater for 500 milliseconds.

1. The PPS will set a DTC, and then communicate with the SDM.
2. The SDM will set DTC B0092 or B0098.
3. The SDM disables the I/P module deployment loop.
4. The PPS will turn ON the passenger air bag status OFF indicator.
5. The SDM commands the AIR BAG indicator ON via serial data communication.

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 PPS will set DTC 024 as a history code only, when the ignition voltage has fallen below 8 volts. This is a normal condition for DTC 024 and it should be diagnosed as a current DTC.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Ignition OFF, disconnect the PPS module connector.
2. Test the PPS ground circuit for an open or high resistance. Verify that an open or high resistance does not exist. If any of the above conditions are found make the appropriate repair.
3. Test the PPS ignition 1 voltage circuit for a short to ground, an open, or high resistance. Verify that a short to ground, an open, or high resistance does not exist. If any of the above conditions are found make the appropriate repair.
4. Reconnect all PPS components. Use the scan tool to clear all PPS DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Rezero the PPS, refer to «Passenger Presence System Rezeroing»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify DTC 024 does not exist. If DTC 024 reset replaced the PPS.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for PPS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The Passenger Presence System (PPS) is used to monitor the weight of an occupant in the front passenger seat. The PPS is calibrated at the seat assembly plant and cannot be recalibrated at a service center and must be replaced. The PPS continuously monitors itself and if the system becomes out of calibration, DTC 063 will be set. When the PPS detects this DTC within the PPS, it will notify the customer of the enable/disable status by turning ON the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. Then the PPS will communicate to the sensing and diagnostic module (SDM) through a non-class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS and will suppress the deployment of the instrument panel (I/P) module and then turn the AIR BAG indicator ON.

Ignition voltage is between 9-16 volts.

1. The PPS will set a DTC, and then communicate with the SDM.
2. The SDM will set DTC B0092.
3. The SDM disables the I/P module deployment loop.
4. The PPS will turn ON the passenger air bag status OFF indicator.
5. The SDM commands the AIR BAG indicator ON via serial data communication.

DTC 063 is an indication that the PPS is out of calibration. You cannot recalibrate the PPS. Replace the PPS after following the instructions in the Circuit/System Testing.

The presence of current or history DTCs while attempting to rezero the PPS will cause the PPS module to set DTC 063. Verify that all SIR and PPS DTCs have been cleared before rezeroing the PPS.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Ignition ON, use the scan tool. Use the scan tool to clear all SIR and PPS DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Rezero the PPS. Refer to «Passenger Presence System Rezeroing»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify DTC 063 exist.
2. Replace the PPS if DTC 063 resets.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for PPS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The Passenger Presence System (PPS) communicates over a non-class 2 communication circuit to the inflatable restraint sensing and diagnostic module (SDM). When the ignition is turned ON, the PPS will check to make sure the PPS verification ID matches that stored in the inflatable restraint sensing and diagnostic module (SDM). If the SDM cannot communicate with the PPS, the SDM will set DTC B0092 and request the instrument panel cluster (IPC) to turn the AIR BAG indicator ON. If the SDM can communicate to the PPS but the verification ID does not match, the PPS will set DTC 033 and notify the SDM that a fault has occurred, and in turn the SDM will set DTC B0098 and request the instrument panel cluster (IPC) to turn the AIR BAG indicator ON.

Ignition voltage is between 9-16 volts.

1. The PPS has lost communications with the SDM.
2. The PPS verification ID does not match the ID that is stored in the SDM.

1. The PPS will set a DTC, and then communicate with the SDM.
2. The SDM will set DTC B0092 or B0098.
3. The SDM disables the I/P module deployment loop.
4. The PPS will turn ON the passenger air bag status OFF indicator.
5. The SDM commands the AIR BAG indicator ON via serial data communication.

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.

DTC B0098 is an indication that the SDM has received an incorrect PPS verification ID. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the correct verification ID from the PPS within 5 seconds, the SDM will set DTC B0098 as current. If DTC B0092 is set, then the SDM cannot communicate with the PPS.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Ignition ON, use the scan tool. Go to the PPS menu, then retrieve the DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify DTC 064 is set.
2. Ignition OFF, disconnect the PPS module connector.
3. Remove the SDM connector.
4. Test the PPS communication circuit between the SDM and the PPS for a short to ground, a high resistance, or an open. Verify short to ground, a high resistance, or an open exist. If any of the above conditions are found make the appropriate repair.
5. Replace the PPS.
6. Use the scan tool to clear all PPS DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Rezero the PPS, refer to «Passenger Presence System Rezeroing»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify DTC 064 does not exist. If DTC 064 reset replaced the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for PPS and SDM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The Passenger Presence System (PPS) uses a silicone filled sensor pad located underneath the passenger seat foam cushion and is connected by a hose clamp to a pressure sensor. The weight of the occupant sitting in the front passenger seat is measured as a pressure change within the bladder by the pressure sensor. The pressure sensor is a 3-wire sensor consisting of a power, ground, and signal circuit. The PPS continually monitors itself and if a fault in this circuit occurs, DTC 065 will set. When the PPS detects this DTC within the PPS, it will notify the customer of the enable/disable status by turning ON the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. Then the PPS will communicate to the sensing and diagnostic module (SDM) through a non-class 2 communications circuit that a PPS fault is present. The SDM will then set DTC B0092 indicating a problem within the PPS and will suppress the deployment of the instrument panel (I/P) module and then turn the AIR BAG indicator ON.

Ignition voltage is between 9-16 volts.

1. The PPS detects the voltage at the PPS sensor signal is less than 0.05 volt or greater than 4.5 volts for 500 milliseconds.
2. The PPS detects the voltage at the PPS sensor 5-volt reference is less than 4.5 volts or greater than 9.1 volts for 500 milliseconds.
3. The PPS detects the amperage at the PPS sensor low reference is 25 ma or greater for 500 milliseconds.

1. The PPS will set a DTC, and then communicate with the SDM.
2. The SDM will set DTC B0092.
3. The SDM disables the I/P module deployment loop.
4. The PPS will turn ON the passenger air bag status OFF indicator.
5. The SDM commands the AIR BAG indicator ON via serial data communications.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Ignition OFF, inspect the component and harness sides of the connector for the PPS pressure sensor.
2. Disconnect the PPS module connector.
3. Test the PPS sensor signal circuit for a short to ground, a high resistance, or an open. Verify that a short to ground, a high resistance, or an open does not exist. If any of the above conditions are found make the appropriate repair.
4. Test the PPS sensor low reference circuit for a short to ground, a short to voltage, a high resistance, or an open. Verify that a short to ground, a short to voltage, a high resistance, or an open does not exist. If any of the above conditions are found make the appropriate repair.
5. Test the PPS sensor 5-volt reference circuit for a short to ground, a short to voltage, a high resistance, or an open. Verify that a short to ground, a short to voltage, a high resistance, or an open does not exist. If any of the above conditions are found make the appropriate repair.
6. Ignition ON, engine OFF test the PPS sensor signal circuit with a DMM. Measure the voltage of the PPS sensor circuit harness side and ground. The voltage should read 0.05-4.5 volts. If the voltage is more than 5.0 volt test the PPS sensor signal circuit for a short to voltage. If the circuit tests good replace the PPS.
7. Reconnect all PPS components. Use the scan tool to clear all PPS DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Rezero the PPS, refer to «Passenger Presence System Rezeroing»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify DTC B0065 does not exist. If DTC B0065 reset replaced the PPS.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for PPS replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

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

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 instrument panel (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. There are 2 shorting bars used within the I/P module connector which will short together both I/P module stage 1 high and low circuits, and both I/P module stage 2 high and low circuits, when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing.

Ignition voltage is between 9-16 volts.

B0012 Stage 2 or B0016 Stage 1

The I/P module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0013 Stage 2 or B0017 Stage 1

1. The I/P module stage 1 or stage 2 high circuit is less than 2.4 volts and the I/P module stage 1 or stage 2 deployment loop is more than 6 ohms for 500 milliseconds.
2. The I/P module stage 1 or stage 2 deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0014 Stage 2 or B0018 Stage 1

1. The I/P module stage 1 or stage 2 high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
2. The I/P module stage 1 or stage 2 high circuit is less than 2.4 volts and I/P module stage 1 or stage 2 deployment loop resistance is less than 6 ohms for 500 milliseconds.

1. The SDM commands the AIR BAG indicator ON via serial data communications.
2. The SIR System is disabled and no deployments are allowed.

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.

If there is more than one DTC set diagnose the open DTC first.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Special Tools Required

1. J 38715-A SIR Driver/Passenger Load tool. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38715-80 Load Tool Adapter

1. Ignition OFF, disconnect I/P module in-line connector.
2. Use J 38715-80 to connect the J 38715-A to the harness side of the I/P module in-line wiring harness connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR and BASE of COLUMN connectors located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0012, B0013, B0014, B0016, B0017, or B0018 is current. If DTC B0012, B0013, B0014, B0016, B0017, or B0018 is history replace the I/P module.
4. Ignition OFF, disconnect and remove the J 38715-A and adapter. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
5. Disconnect the SDM harness connector.
6. Test the high and low circuits between the SDM and I/P module for a short to voltage, short to ground, an open, or low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found make the appropriate repair.
7. If all circuits test normal then replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
3. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

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

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 steering module module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. There are 2 shorting bars used within the steering wheel module connector which will short together both steering wheel module stage 1 high and low circuits, and both steering wheel 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.

Ignition voltage is between 9-16 volts.

B0022 stage 1 or B0042 stage 2

The steering wheel module deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0024 stage 1 or B0043 stage 2

1. The steering wheel module stage 1 or stage 2 high circuit is less than 2.4 volts and the steering wheel module stage 1 or stage 2 deployment loop is more than 6 ohms for 500 milliseconds.
2. The steering wheel module stage 1 or stage 2 deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0026 stage 1 or B0044 stage 2

1. The steering wheel module stage 1 or stage 2 high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
2. The steering wheel module stage 1 or stage 2 high circuit is less than 2.4 volts and steering wheel module stage 1 or stage 2 deployment loop resistance is less than 6 ohms for 500 milliseconds.

1. The SDM commands the AIR BAG indicator ON via serial data communications.
2. The SIR System is disabled and no deployments are allowed.

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.

If there is more than one DTC set diagnose the open DTC first.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Special Tools Required

1. J 38715-A SIR Driver/Passenger Load tool. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38715-80 SIR Load Tool Adapter (Bottom of Column)
3. J 38715-120 SIR Load Tool Adapter (Top of Column)

1. Ignition OFF, disconnect the steering wheel module. Refer to steering wheel module replacement in Repair Instructions. Then use J 38715-120 to connect the J 38715-A to the upper steering wheel coil module in-line wiring harness connectors. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR and STEERING COLUMN connectors located on the load tool.
2. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0022, B0024, B0026, B0042, B0043 or B0044 are set current. If DTC B0022, B0024, B0026, B0042, B0043 or B0044 is history replace the steering wheel module.
3. Ignition OFF, disconnect steering wheel coil module in-line connector. Refer to steering wheel module coil replacement in Repair Instructions for connector location.
4. Use J 38715-80 to connect the J 38715-A to the harness side of the steering wheel coil module in-line wiring harness connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR and BASE of COLUMN connectors located on the load tool.
5. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0022, B0024, B0026, B0042, B0043 or B0044 are set current. If DTC B0022, B0024, B0026, B0042, B0043 or B0044 is history replace the steering wheel coil module.
6. Ignition OFF, disconnect and remove the J 38715-A and adapter. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Then remove the SDM connector, refer to SDM replacement in Repair Instructions for connector location.
7. Test the high and low circuits between the SDM and steering wheel coil module for a short to voltage, short to ground, an open, or low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found make the appropriate repair.
8. If all circuits test normal then replace the SDM.

1. «Inflatable Restraint Steering Wheel Module Coil Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Inflatable Restraint Steering Wheel Module Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

DTC B0028, B0029, or B0030

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 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. A shorting bar used within the side impact module - RF connector which will short together both side impact module - RF high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing.

Ignition voltage is between 9-16 volts.

B0028

The side impact module - RF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0029

1. 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.
2. Side impact module - RF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0030

1. Side impact module - RF high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
2. 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.

1. The SDM commands the AIR BAG indicator ON via serial data communication.
2. The SIR System is disabled and no deployments are allowed.

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.

If there is more than one DTC set diagnose the open DTC first.

SIR Schematics

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Special Tools Required

1. J 38715-A SIR Driver/Passenger Load tool. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38715-30A SIR Load Tool Adapter
3. J 38715-60 SIR Load Tool Adapter

1. Ignition OFF, disconnect the side impact module - RF wiring harness connector located under the passenger front seat.
2. Use J 38715-60 adapter to connect the J 38715-A to the harness side of the side impact module - RF wiring harness connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR connector located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0028, B0029, or B0030 is set history. If DTC B0028, B0029, or B0030 is current turn OFF the ignition and remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location. Test and repair both side impact module - RF high and low circuits for a short to voltage, short to ground, or open/low resistance. If all circuits test normal then replace the SDM
4. Ignition OFF, disconnect and remove both the J 38715-A and adapter. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Then connect the side impact module - RF wiring harness connector. Remove the side impact module - RF connector. Use J 38715-30A adapter to connect the J 38715-A to the harness side of the side impact module - RF connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR connector located on the load tool.
5. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0028, B0029, or B0030 is set history. If DTC B0028, B0029, or B0030 is current, replace the side impact module - RF wiring harness.
6. If DTC B0028, B0029, or B0030 is history, replace the side impact module - RF.

1. «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Inflatable Restraint Side Impact Module Wiring Harness Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

DTC B0040, B0041, or B0045

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 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. A shorting bar used within the side impact module - LF connector which will short together both side impact module - LF high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing.

Ignition voltage is between 9-16 volts.

B0040

The side impact module - LF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0041

1. 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.
2. Side impact module - LF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0045

1. Side impact module - LF high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
2. 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.

1. The SDM commands the AIR BAG indicator ON via serial data communication.
2. The SIR System is disabled and no deployments are allowed.

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.

If there is more than one DTC set diagnose the open DTC first.

SIR Schematics

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Special Tools Required

1. J 38715-A SIR Driver/Passenger Load tool. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38715-30A SIR Load Tool Adapter
3. J 38715-60 SIR Load Tool Adapter

1. Ignition OFF, disconnect the side impact module - LF wiring harness connector located under the driver front seat.
2. Use J 38715-60 to connect the J 38715-A to the harness side of the side impact module - LF wiring harness connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR connector located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0040, B0041, or B0045 is set history. If DTC B0040, B0041, or B0045 is current turn OFF the ignition and remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location. Test and repair both side impact module - LF high and low circuits for a short to voltage, short to ground, or open/low resistance. If all circuits test normal then replace the SDM
4. Ignition OFF, disconnect and remove both the J 38715-A and adapter. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Then connect the side impact module - LF wiring harness connector. Remove the side impact module - LF connector. Use J 38715-30A to connect the J 38715-A to the harness side of the side impact module - LF connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR connector located on the load tool.
5. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0040, B0041, or B0045 is set history. If DTC B0040, B0041, or B0045 is current, replace the side impact module - LF wiring harness.
6. If DTC B0040, B0041, or B0045 is history, replace the side impact module - LF.

1. «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Inflatable Restraint Side Impact Module Wiring Harness Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) contains sensing devices that converts vehicle velocity changes to electrical signals. The SDM processes the generated electrical signals and compares them to values stored in memory. When the generated signals exceed the stored values, the SDM performs additional signal processing and compares the generated signals to signals stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the inflator modules, and causing DTC B0051 to set.

Ignition voltage is between 9-16 volts.

1. The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules.
2. The SDM detects a side impact of sufficient force to warrant deployment of a side impact module.

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

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

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

1. Ignition OFF, inspect the vehicle for signs of inflator module or pretensioner deployment. Verify that the vehicle does not show any signs of inflator deployment. If the vehicle displays any signs of inflator deployment go to «Repairs and Inspections Required After a Collision»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Use a scan tool and observe the SIR DTC display, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-trouble-code-dtc-list) . The scan tool should indicate DTC B0051 is not set. If DTC B0051 is set then replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) contains sensing devices that converts vehicle velocity changes to electrical signals. The SDM processes the generated electrical signals and compares them to values stored in memory. When the generated signals exceed the stored values, the SDM performs additional signal processing and compares the generated signals to signals stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the inflator modules. DTC B0053 will set along with DTC B0051 when a deployment occurs while a circuit malfunction is present in any one of the deployment loops.

Ignition voltage is between 9-16 volts.

1. The SDM detects a frontal impact of sufficient force to warrant deployment of the frontal modules when a current SIR DTC is set.
2. The SDM detects a side impact of sufficient force to warrant deployment of a side impact module when a current SIR DTC is set.

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

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

DTC B0053 will be accompanied by another DTC, other than DTC B1000 and DTC B0051. Repair the malfunction causing the other DTCs before installing a new SDM.

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

1. Ignition OFF, inspect the vehicle for signs of inflator module or pretensioner deployment. Verify that the vehicle does not show any signs of inflator deployment. If the vehicle displays any signs of inflator deployment go to «Repairs and Inspections Required After a Collision»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Use a scan tool and observe the SIR DTC display, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-trouble-code-dtc-list) . The scan tool should indicate DTC B0053 is not set. If DTC B0053 is set then replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

DTC B0057, B0058, or B0059

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 seat belt pretensioner - RF. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar used within the seat belt pretensioner - RF connector which will short together both seat belt pretensioner - RF high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing.

Ignition voltage is between 9-16 volts.

B0057

The seat belt pretensioner - RF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0058

1. 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.
2. Seat belt pretensioner - RF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0059

1. Seat belt pretensioner - RF high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
2. 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.

1. The SDM commands the AIR BAG indicator ON via serial data communication.
2. The SIR System is disabled and no deployments are allowed.

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.

If there is more than one DTC set diagnose the open DTC first.

SIR Schematics

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Special Tools Required

1. J 38715-A SIR Driver/Passenger Load tool. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38715-60 SIR Load Tool Adapter

1. Ignition OFF, disconnect the seat belt pretensioner - RF wiring harness connector located under the passenger front seat.
2. Use J 38715-60 to connect the J 38715-A to the harness side of the seat belt pretensioner - RF connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR connector located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0057, B0058, or B0059 is set current. If DTC B0057, B0058, or B0059 is history, replace the seat belt pretensioner - RF.
4. Ignition OFF, disconnect and remove both the J 38715-A and J38715-60. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Then remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location.
5. Test the high and low circuits between the SDM and seat belt pretensioner - RF for a short to voltage, short to ground, or open/low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found make the appropriate repair.
6. If all circuits test normal then replace the SDM.

1. «Seat Belt Buckle Pretensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

DTC B0064, B0065, or B0066

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 seat belt pretensioner - LF. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar used within the seat belt pretensioner - LF connector which will short together both seat belt pretensioner - LF high and low circuits when the connector is disconnected, this will help to prevent unwanted deployment of the inflator module during servicing.

Ignition voltage is between 9-16 volts.

B0064

The seat belt pretensioner - LF deployment loop resistance is less than 1.3 ohms for 500 milliseconds.

B0065

1. 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.
2. Seat belt pretensioner - LF deployment loop resistance is more than 4.8 ohms for 500 milliseconds.

B0066

1. Seat belt pretensioner - LF high and/or low circuits is short to ground or short to voltage for 500 milliseconds.
2. 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.

1. The SDM commands the AIR BAG indicator ON via serial data communication.
2. The SIR System is disabled and no deployments are allowed.

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.

If there is more than one DTC set diagnose the open DTC first.

SIR Schematics

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Special Tools Required

1. J 38715-A SIR Driver/Passenger Load tool. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38715-60 SIR Load Tool Adapter

1. Ignition OFF, disconnect the seat belt pretensioner - LF wiring harness connector located under the driver front seat.
2. Use J 38715-60 to connect the J 38715-A to the harness side of the seat belt pretensioner - LF wiring harness connector. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Use the PASSENGER INFLATOR connector located on the load tool.
3. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0064, B0065, or B0066 is set current. If DTC B0064, B0065, or B0066 is history replace the seat belt retractor pretensioner - LF.
4. Ignition OFF, disconnect and remove both the J 38715-A and J38715-60. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Then remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location.
5. Test the high and low circuits between the SDM and seat belt pretensioner - LF for a short to voltage, short to ground, or open/low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found make the appropriate repair.
6. If all circuits test normal then replace the SDM.

1. «Seat Belt Buckle Pretensioner Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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

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 (SOH), 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 DTC.

Ignition voltage is between 9-16 volts.

All of the following conditions exist for 2.5 seconds

B0077 for SIS - LF or B0078 for SIS - RF

1. A valid ID message is not received within 5 seconds of the SIS being powered up.
2. The SDM has not received a message from the SIS for more than 375 milliseconds.
3. The SDM has reset the SIS twice without detecting a valid ID message.

B0079 for SIS - LF or B0081 for SIS - RF

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

B0080 for SIS - LF or B0082 for SIS - RF

The SDM has received a NOK message from the SIS.

1. The SDM commands the AIR BAG indicator ON via serial data communications.
2. The SIR system is disabled and no deployments are allowed.

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.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

1. Ignition ON, use the scan tool as clear SIR codes then recheck for DTCs. Verify that DTC B0079, B0080, B0081, or B0082 is not set. If DTC B0079 or B0080 is set current, replace the SIS left. If DTC B0081 or B0082 is set current, replace the SIS right.
2. If DTC B0077 is current, disconnect the left SIS connector, or if DTC B0078 is current, disconnect the right SIS connector. Refer to SIS replacement in Repair Instructions for location of connector.
3. Remove the SDM connector.
4. Test the signal and voltage circuits between the SDM and SIS. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found, make the appropriate repair.
5. Reconnect all SIR components. Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify no DTCs are set. If DTC B0077 was current, replace the left SIS. If DTC B0078 was current, replace the right SIS. After replacement, refer to Repair Verification.

1. «Inflatable Restraint Side Impact Sensor Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
3. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

Repair Verification

Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify no DTCs are set.

1. If DTC B0077 or B0078 was current, replace the SDM.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

DTC B0083 or B0084

The inflatable restraint seat position sensor (SPS) is used to determine the proximity of a front driver or passenger seat position with respect to the frontal air bag. The SPS interfaces with the sensing and diagnostic module (SDM). The state of the SPS allows the SDM to disable stage 2 of the frontal air bag for a front seat that is forward of a forward/rearward point in seat track travel. The SPS is a hall effect sensor that is mounted on the outboard seat track of both the driver and passenger seats. The seat track includes a metal bracket that shunts the SPS magnetic circuit creating 2 states of seat position. The shunted state represents a rearward seat position. The non-shunted state represents a forward position. The SPS provides 2 current ranges, one range for the shunted state and a second range for a non-shunted state. These 2 states are inputs to the SDM. State 1 (shunted) being the rearward threshold and state 2 (non-shunted) being the forward threshold. When the SDM receives input from a SPS that state 1 threshold is reached (seat is rearward) the SDM will not disable stage 2 deployment, if required by the deployment sensors. When state 2 threshold is reached (seat is forward) the SDM will disable stage 2 deployment on the side the seat is forward. The SDM monitors the SPS circuit and if a fault is detected the SDM will set codes B0083 or B0084 and defaults to disabling stage 2 frontal deployment. This will only default on the side of the vehicle the sensor has a fault.

Ignition voltage is between 9-16 volts.

B0083 for Right Front Seat Position Sensor or B0084 for Left Front Seat Position Sensor

1. The SDM detects the SPS circuit amperage is 4 mA or less for 500 milliseconds.
2. The SDM detects the SPS circuit amperage is between 8-11 mA for 500 milliseconds.
3. The SDM detects the SPS circuit amperage is 18 mA or greater for 500 milliseconds.

1. The SDM commands the AIR BAG indicator ON via serial data communication.
2. The SDM defaults the SPS to seat forward threshold.

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.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Ignition OFF, if DTC B0083 is current, disconnect the right SPS connector. If DTC B0084 is current, disconnect the left SPS connector.
2. Remove the SDM connector.
3. Test the low reference and signal circuits between the SDM and SPS. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found make the appropriate repair.
4. Reconnect all SIR components. Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify DTC B0083 or B0084 does not set. If DTC B0083 was current replace the right SPS. If DTC B0084 was current replace the left SPS. After replacement refer to Repair Verification.

1. «Inflatable Restraint Seat Position Sensor Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify no DTCs are set.

1. If DTC B0083 or B0084 was current replace the SDM.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode, the SDM will establish communication with the Passenger Presence System (PPS). The PPS will respond by commanding both the PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. The SDM will transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM and the SDM will compare the ID received to data stored in memory. The SDM will also set DTC B0092 to notify the driver that the PPS has a current malfunction present. When the SDM detects that the PPS has set any one of the following DTCs 032, 034, 036, 052, or 056 the SDM will then disable the instrument panel (I/P) module deployment loop, set DTC B0092 and command the AIR BAG indicator ON.

Ignition voltage is between 9-16 volts.

1. The SDM has detected the PPS has set a DTC.
2. The SDM has loss or no communication with the PPS.

1. The SDM will disable the I/P module deployment loop.
2. The SDM commands the AIR BAG indicator ON via serial data communication.
3. The PPS will turn ON the PASSENGER AIR BAG OFF indicator.

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.

DTC B0092 is an indication that the SDM has no or loss communication with the PPS or the PPS has internal faults/DTCs. The SDM will communicate to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the verification ID from the PPS within 5 seconds the SDM will set the DTC as current, illuminate the AIR BAG indicator, and disable the I/P deployment loop.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

1. Ignition ON, the PPS should turn ON the PPS ON/OFF indicators. Verify the PPS illuminates the PPS ON/OFF indicators. If the Passenger Air Bag ON/OFF status indicator does not illuminate refer to «Passenger Presence System Indicator Circuit Malfunction»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Ignition ON, use the scan tool. Go to the PPS menu, then retrieve the DTCs. Refer to «Passenger Presence System Flash Code Procedures»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . Verify no PPS DTCs are set. If the PPS has any current or history DTCs stored, you must address the PPS DTCs first. Refer to the «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-trouble-code-dtc-list) .
3. Ignition OFF, disconnect the PPS module connector.
4. Remove the SDM connector.
5. Test the occupant sensor serial data circuit for an open, short to ground, or high resistance between the PPS and SDM connector. Verify no open, short to ground, or high resistance exists. If any of the above conditions are found make the appropriate repair.
6. Test the PPS ignition 1 voltage and ground circuits for a short to ground, a short to voltage, a high resistance, or an open. Verify no short to ground, a short to voltage, a high resistance, or an open exists. If any of the above conditions are found make the appropriate repair.
7. If all circuits test normal then replace the PPS.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for PPS and SDM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode, the SDM will establish communication with the Passenger Presence System (PPS). The PPS will respond by commanding both of the PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. The SDM will then transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM, and the SDM will compare the ID received to data stored in memory. If the data stored in memory does not match the information transmitted by the PPS, the SDM will set DTC B0098 or B0092 and command the AIR BAG indicator ON.

Ignition voltage is between 9-16 volts.

1. The PPS verification ID does not match the ID that is stored in the SDM.
2. The SDM has loss or no communication with the PPS.

1. The SDM will disable the I/P module deployment loop.
2. The SDM commands the AIR BAG indicator ON via serial data communication.
3. The PPS will turn ON the PASSENGER AIR BAG OFF indicator.

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.

DTC B0098 and/or DTC 064 is an indication that the SDM has received an incorrect PPS verification ID. The SDM will continue to request the verification ID from the PPS for 5 seconds. If the SDM does not receive the correct verification ID from the PPS within 5 seconds, the SDM will set DTC B0098. If either the SDM or PPS were replaced, verify that the correct part numbers were used for the vehicle application.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Check to see if the PPS was replaced. Verify the correct PPS was installed. If the wrong PPS was installed, replace with the correct PPS.
2. Check to see if the SDM was replaced. Verify the correct SDM was installed. If the wrong SDM was installed, replace with the correct SDM.
3. Check to see if DTC B1001 is set. Verify DTC B1001 is not set. If DTC B1001 is current go to «DTC B1001»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
4. Replace the PPS. With the ignition ON, use the scan tool to clear the DTCs then recheck for DTC B0098. Verify DTC B0098 does not set. If DTC B0098 resets then replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for PPS and SDM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

DTC B0100, B0101, B0102, B0103, B0104, or B0105

The inflatable restraint front end sensor 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 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 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 DTC.

Ignition voltage is between 9-16 volts.

All of the following conditions exist for 2.5 seconds

B0100 for Front End Sensor 1 or B0103 for Front End Sensor 2

1. A valid ID message is not received within 5 seconds of the front end sensor being powered up.
2. The SDM has not received a message from the front end sensor for more than 375 milliseconds.
3. The SDM has reset the front end sensor twice without detecting a valid ID message.

B0101 for Front End Sensor 1 or B0104 for Front End Sensor 2

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

B0102 for Front End Sensor 1 or B0105 for Front End Sensor 2

The SDM has received a NOK message from the front end sensor.

1. The SDM commands the AIR BAG indicator ON via serial data communications.
2. The SIR System is disabled and no deployments are allowed.

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.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

1. Ignition ON, use the scan tool as clear SIR codes then recheck for DTCs. Verify that DTC B0101, B0102, B0104, or B0105 is not set. If DTC B0101 or B0102 is set current replace the front end sensor 1/left. If DTC B0104 or B0105 is set current replace the front end sensor 2/right.
2. If DTC B0100 is current, disconnect the front end sensor 1 connector, or if DTC B0103 is current disconnect the front end sensor 2 connector.
3. Remove the SDM connector.
4. Test the signal and voltage circuits between the SDM and front end sensor. Verify that a short to voltage, short to ground, or open/low resistance does not exist. If any of the above conditions are found make the appropriate repair.
5. Reconnect all SIR components. Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify no DTCs are set. If DTC B0100 was current replace the front end sensor 1. After replacement refer to Repair Verification. If DTC B0103 was current replace the front end sensor 2. After replacement refer to Repair Verification.

1. «Inflatable Restraint Front End Sensor Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
3. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM replacement, setup, and programming

Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify no DTCs are set.

1. If DTC B0100 or B0103 was current replace the SDM.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) stores the vehicles restraint ID from the vehicle identification number (VIN) and the last 4 digits of the SDM part number. When the ignition is turned ON, the SDM compares this information to the information stored in the body control module (BCM) over the serial data communication circuit. If there is a mismatch between the information stored in the SDM and BCM, DTC B1001 will set.

Ignition voltage is between 9-16 volts.

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

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

1. The last 4 digits of the SDM part number match the last 4 digits stored in the BCM.
2. The restraints ID that is stored in the SDM matches the restraints ID that is stored in the BCM.

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

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

1. Ignition ON, use the scan tool to request SIR DTCs. Verify that DTC B1001 is set as current. If DTC B1001 is history, clear codes and recheck.
2. Using the scan tool check the BCM that is programmed with the VIN. Verify that the BCM is programmed with the correct VIN number with the vehicle VIN plate. If the BCM has the wrong VIN number.
3. Using the scan tool perform the Setup SDM Part Number into BCM procedure.
4. With the ignition ON use the scan tool to clear the DTCs. Verify that DTC B1001 is cleared. If DTC B1001 was current replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
2. «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for SDM or BCM replacement, setup, and programming

The Inflatable Restraints Passenger Presence System (PPS) is a calibrated system that requires rezeroing anytime the seat cushion trim attachments have been removed or the PPS has been replaced. The procedures below are designed to assist in the rezeroing of the PPS. Before you start, read these procedures carefully and completely. For further information regarding the PPS refer to SIR System Description and Operation .

1. Read this procedure carefully and completely.
2. The PPS will not function properly if the PPS rezeroing procedure is not performed.
3. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) after successfully completing the rezeroing procedure to ensure the system is functioning properly.

Passenger Presence System (PPS) Rezeroing Procedure

1. Empty the front outboard passenger seat.
2. Verify that all SIR and PPS components, connectors, and connector position assurances (CPAs) are properly connected and mounted.
3. Install a scan tool.
4. Turn ON the ignition, with the engine OFF.
5. Use the scan tool in order to clear the SIR and PPS DTCs.
6. With a scan tool, request the PPS rezeroing procedure.
7. Initiate the PPS rezeroing procedure. The PPS will illuminate both PASSENGER AIR BAG ON and OFF indicators until the rezeroing procedure has been completed. When the rezeroing procedure has been successfully completed, the PPS will display the current system status by using either the PASSENGER AIR BAG ON or OFF indicator. If the rezeroing procedure was unsuccessful, both PASSENGER AIR BAG ON and OFF indicators will alternate from no illumination to full illumination in 1 second intervals for 5 seconds. The PPS will treat an unsuccessful rezero attempt as a system fault.
8. If the rezeroing procedure was unsuccessful, repeat this procedure. Due to the communication status between the SDM and the PPS module, this procedure may have to be repeated until a successful rezero attempt has been achieved.
9. After the PPS has been successfully rezeroed, perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Symptoms - SIR

1. Perform «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) 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/xlr/i-2003-2009/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/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__checking-aftermarket-accessories) .
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 .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Air Bag Indicator Circuit Malfunction»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in order to diagnose the symptom.
2. «Passenger Presence System Indicator Circuit Malfunction»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in order to diagnose the symptom.

When the ignition is turned ON, the instrument panel cluster (IPC) flashes the AIR BAG indicator seven times. The inflatable restraint sensing and diagnostic module (SDM) performs diagnostic tests on the SIR system and then commands the IPC to turn the AIR BAG indicator OFF if no SIR malfunction exists. The AIR BAG indicator is controlled by the SDM via serial data communications. If the ignition 1 voltage is outside of the normal operating voltage range 9-16 volts, the SDM will command the IPC to turn the AIR BAG indicator ON with no diagnostic trouble codes (DTCs) present then disables all deployment loops.

SIR Schematics

SIR Connector End Views

1. Ignition ON, use the scan tool to request the SIR data list display. Observe the Battery Voltage Parameter. The battery voltage on the scan tool should read 9-16 volts. If the voltage is less than 9 volts refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .
2. Using the scan tool go to Body and Accessories, then go onward to Special Functions to Instrument Panel Cluster, and then go to Display Test. In the Display Test mode you can turn ON or OFF all the instrument panel indicators when commanded ON. Commanded the IPC indicators ON. The Air Bag indicator should turn ON. If the Air Bag indicator does not turn ON replace the IPC. Note: The AIR BAG warning indicator is not serviceable separately. The IPC must be serviced/replaced as a complete unit.
3. Replace the SDM.

Control Module References for IPC and SDM replacement, setup, and programming.

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The PASSENGER AIR BAG ON/OFF indicators are used to notify the driver when the Passenger Presence System (PPS) has enabled or disabled the instrument panel (I/P) inflator module. When the ignition is turned ON, the PPS module is supplied with voltage and commands both PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. Then the PPS module conducts tests on the PPS components and circuits while both PASSENGER AIR BAG ON/OFF indicators are ON. If no malfunctions are detected, the PPS module will turn the PASSENGER AIR BAG indicator ON or OFF, depending on the status of the PPS. If a malfunction is detected, the PPS module will store a DTC, default the PPS to the OFF state, and communicate with the SDM that a DTC has been set. The SDM will request the instrument panel cluster (IPC) to turn the AIR BAG indicator ON to notify the driver of a PPS malfunction.

Schematic Reference

SIR Schematics

Connector End View Reference

SIR Connector End Views

Electrical Information Reference

1. «Circuit Testing»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
2. «Connector Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)
5. «SIR/SRS Wiring Repairs»(/cadillac/xlr/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)

1. Ignition OFF, disconnect the PPS module connector located under the passenger seat.
2. Disconnect the inside rearview mirror connector located on the back side of the mirror.
3. Test the inside rearview mirror ignition 1 voltage circuit for a short to ground, a high resistance, or an open. Verify that a short to ground, a high resistance, or an open does not exist. If any of the above conditions are found, make the appropriate repair.
4. Test both passenger ON and OFF indicator control circuits between the inside rearview mirror and the PPS for a short to voltage, high resistance, or an open. Verify that a short to voltage, a high resistance, or an open does not exist. If any of the above conditions are found, make the appropriate repair.
5. Reconnect the PPS connector then turn the ignition ON, engine OFF. Then connect a test lamp between the ignition 1 voltage circuit and passenger air bag OFF indicator control circuit on the inside rearview mirror connector. With the passenger front seat empty, verify the test lamp illuminates. If test lamp does not illuminate, replace the PPS. If test lamp illuminates, replace the inside rearview mirror.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for SDM and inside rearview mirror replacement, setup, and programming

SIR Disabling and Enabling

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

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 if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after 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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

SIR component location affects how a vehicle should be serviced. There are parts of the SIR system installed in various locations around a vehicle. To find the location of the SIR components, refer to SIR Identification Views .

There are several reasons for disabling the SIR system, such as repairs to the SIR system or servicing a component near or attached to an SIR component. There are several ways to disable the SIR system depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the SIR system.

SIR Disabling and Enabling

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags if the SDM loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

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 ft) or greater

1. Inflatable restraint SDM
2. Any Inflatable restraint air bag module
3. Inflatable restraint steering wheel module coil
4. Any Inflatable restraint sensor
5. Inflatable restraint seat belt pretensioners
6. Inflatable restraint passenger presence system (PPS) module or sensor

Disabling Procedure - Air Bag Fuse

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Locate and remove the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
4. Wait 1 minute before working on the system.

Enabling Procedure - Air Bag Fuse

1. Place the ignition in the OFF position.
2. Install the fuse(s) supplying power to the SDM. Refer to «SIR Schematics»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/xlr/i-2003-2009/remont/electrical-component-locations/#wiring-systems-component-views) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Disabling Procedure - Negative Battery Cable

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Place the ignition in the OFF position.
3. Disconnect the negative battery cable from the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
4. Wait 1 minute before working on system.

Enabling Procedure - Negative Battery Cable

1. Place the ignition in the OFF position.
2. Connect the negative battery cable to the battery. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/xlr/i-2003-2009/remont/charging-system/#battery-charging-system-and-starting-system) .
3. Turn the ignition switch to the ON position. The AIR BAG indicator will flash then turn OFF.
4. Perform the Diagnostic System Check - Vehicle if the AIR BAG warning indicator does not operate as described. Refer to «Diagnostic System Check - Vehicle»(/cadillac/xlr/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) .

Removal Procedure

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the retaining bolts from the inflatable restraint front end sensor.
3. Remove the sensor from the vehicle.

Installation Procedure

1. Install the sensor from the vehicle.
2. Install the retaining bolts to the inflatable restraint front end sensor. Tighten: Tighten the bolts to 9 N.m (80 lb in).
3. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the door trim panel. Refer to «Door Trim Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/door-locks-anti-theft-systems/#door-system-mirror-system-window-system) .
3. Remove the retaining bolts from the inflatable restraint side impact sensor.
4. Remove the sensor from the vehicle.

1. Install the sensor from the vehicle.
2. Install the retaining bolts to the inflatable restraint side impact sensor. Tighten: Tighten the bolts to 9 N.m (80 lb in).
3. Install the door trim panel. Refer to «Door Trim Panel Replacement»(/cadillac/xlr/i-2003-2009/remont/door-locks-anti-theft-systems/#door-system-mirror-system-window-system) .
4. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the accessory trim plate. Refer to «Instrument Panel Accessory Trim Plate Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) .
3. Remove the connector position assurance (CPA) from the SDM harness connector.
4. Disconnect the SDM harness connector.
5. Remove the SDM mounting fasteners.
6. Remove the SDM from the I/P center support system.

1. Remove any dirt, grease, or other impurities from the mounting surface.
2. Install the SDM horizontally to the I/P center support system.
3. Point the arrow on the SDM toward the front of the vehicle.
4. Install the SDM mounting fasteners. Tighten: Tighten the fasteners to 10 N.m (89 lb in).
5. Install the SDM harness connector to the SDM.
6. Install the CPA to the SDM harness connector.
7. Install the accessory trim plate. Refer to «Instrument Panel Accessory Trim Plate Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) .
8. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
9. Refer to «Control Module References»(/cadillac/xlr/i-2003-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for programming and setup information.

Tools Required

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

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. On the back side of the steering wheel are 3 openings for removing the steering wheel module.
3. Adjust and install J 44298 into 1 of the holes. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
4. Pull the handle of the air bag tool away from the instrument panel (I/P) releasing one of the spring loaded fasteners.
5. Repeat this step for the other 2 fasteners.
6. Pull the inflatable restraint module gently away from the steering wheel.
7. Remove the connector position assurance (CPA) (4) and the electrical connector from the steering wheel module.
8. Remove the horn contact lead (2) from the steering column cam tower.
9. Remove the steering wheel module (5).

1. Connect the horn contact lead into the steering column cam tower.
2. Connect the steering wheel module electrical connector and the CPA (4). IMPORTANT: This vehicle is equipped with dual stage air bags, you will find 2 connectors. Match the right color connector to the right color opening in the module. Route the steering wheel module wires, the redundant control wires, and the horn wires correctly.
3. Align the steering wheel module fasteners to the steering column fastener holes.
4. Push the steering wheel module firmly into the steering column in order to engage the fasteners.
5. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) for proper disposal.

J 42640 Steering Column Anti Rotation Pin. See Special Tools .

1. Disable the SIR System. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Verify the following before removing the SIR coil: The wheels on the vehicle are straight ahead. That J 42640 is installed or the ignition switch is in the LOCK position. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
3. Remove the steering wheel from the steering shaft. Refer to «Steering Wheel Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column__steering-wheel-replacement) in Steering Wheel and Column.
4. On vehicles with a tilt column, pull the tilt lever straight out from the steering column.
5. Remove 2 TORX® head screws (1) from the lower trim cover (2).
6. Remove the lower trim cover (2).
7. Remove 2 TORX® head screws (2) from the upper trim cover (1).
8. Remove the upper trim cover (1).
9. Remove the wire harness straps from the steering wheel column wire harness.
10. Remove the retaining ring (3).
11. Remove the SIR coil (4) from the steering shaft.
12. If replacing, discard the SIR coil.

1. Verify the following: The wheels on the vehicle are straight ahead. That J 42640 is installed or the ignition switch is in the LOCK position. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. If reusing the existing coil it MUST be centered, refer to «Inflatable Restraint Steering Wheel Module Coil Centering»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column__inflatable-restraint-steering-wheel-module-coil) in Steering Wheel and Column.
3. Align the SIR coil assembly (1) with the horn tower on the turn signal cancel cam assembly (2).
4. Slide the SIR coil (4) onto the steering shaft assembly (2).
5. Firmly seat the retaining ring (3) into the groove on the steering shaft assembly (2).
6. Remove and discard the centering tab from the new SIR coil (4).
7. Install the upper trim cover (1) and secure by using 2 TORX® head screws (2). Tighten: Tighten the screws to 1.5 N.m (13 lb in).
8. Install the lower trim cover (2) and secure by using 2 TORX® head screws (1).
9. Verify that the tabs on the lower trim cover (1) engage with the tabs on the upper trim cover (2). Snap the tabs together. Tighten: Tighten the screws to 1.5 N.m (13 lb in).
10. On vehicles with a tilt column, align the tilt lever into the steering column.
11. Slide the tilt lever handle into the steering column until the handle locks into position.
12. Install the steering wheel onto the steering shaft. Refer to «Steering Wheel Replacement»(/cadillac/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column__steering-wheel-replacement) in Steering Wheel and Column.
13. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the I/P carrier assembly. Refer to «Instrument Panel Carrier Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
3. Remove the connector position assurance (CPA) from the I/P module harness connector.
4. Disconnect the pigtail connector from the I/P module.
5. Remove the mounting fasteners from the I/P module.
6. Remove the I/P module from the bracket.
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 «Inflator Module Handling and Scrapping»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Install the I/P module to the bracket.
2. Install the I/P module mounting fasteners. Tighten the fasteners in the order shown in the graphic. Tighten: Tighten the fasteners to 10 N.m (89 lb in).
3. Connect the pigtail connector to the I/P module.
4. Install the CPA to the harness connector on the I/P module.
5. Install the I/P carrier assembly. Refer to «Instrument Panel Carrier Replacement»(/cadillac/xlr/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
6. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Remove the seat from the vehicle. Refer to «Seat Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) .
2. Disconnect the electrical connector from the seat position sensor.
3. Drill out the rivets that retain the position sensor (1) to the seat adjuster track bracket.
4. Remove the position sensor from the seat adjuster track bracket.

1. Install the position sensor to the seat adjuster bracket.
2. Install the rivets that retain the position sensor (1) to the seat adjuster track bracket.
3. Connect the electrical connector to the position sensor.
4. Install the seat to the vehicle. Refer to «Seat Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) .

Scheme 23

Inflatable Restraint Passenger Presence System Replacement - Front

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) and to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the front seat. Refer to «Seat Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) in Seats.
3. Remove the seat back cover. Refer to «Driver Seat Back Cushion Pad Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) or to «Passenger Seat Back Cushion Pad Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) in Seats.
4. Remove the retaining bolts that attach the inflatable restraint side impact module to the seat frame.
5. Remove the side impact module retainer from the seat back cushion cover.
6. Remove the wiring harness retaining clips from the seat frame.
7. Remove the wiring harness from the seat frame.
8. Remove the side impact module from the seat frame.
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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Install the module wiring harness to the seat frame while guiding the wiring harness through the appropriate spots on the seat frame.
2. Install the wiring harness retaining clips to the seat frame.
3. Install the side impact module to the seat frame.
4. Install the side impact module retainer to the seat back cushion cover.
5. Install the retaining bolts to the side impact module. Tighten: Tighten the bolts to 10 N.m (89 lb in).
6. Install the seat back cover. Refer to «Driver Seat Back Cushion Pad Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) or to «Passenger Seat Back Cushion Pad Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) in Seats.
7. Install the front seat. Refer to «Seat Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) in Seats.
8. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) and to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
2. Remove the side impact inflator module from the seat. Refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
3. With the seat back cover in the open position the wiring harness on the side impact inflator module will be exposed. Remove the retaining clips that secure the inflator module wiring harness to the seat. Remove the wiring harness.

1. Install the new inflator module wiring harness to the seat. Install the retaining clips that secure the wiring harness to the seat.
2. Install the side impact inflator module to the seat. Refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
3. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)
2. Disconnect the pretensioner electrical connector from the side air bag connector.
3. Remove the seat from the vehicle. Refer to «Seat Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) in Seats.
4. Remove the pretensioner fastener (2) and remove the pretensioner (1) from the seat.
5. Fully deploy the module before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to «Pretensioner Handling and Scrapping»(/cadillac/xlr/i-2003-2009/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 seat into the vehicle. Refer to «Seat Replacement»(/cadillac/xlr/i-2003-2009/remont/seats/#seat-system) in Seats.
4. Carefully route the pretensioner pigtail harness and the seat belt wiring harness under the seat.
5. Connect the pretensioner electrical connector to the side air bag connector.
6. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) or to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/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/xlr/i-2003-2009/remont/steering-column-switches/#steering-wheel-steering-column) .
2. The instrument panel (I/P) knee bolsters and mounting points - Inspect the knee bolsters for bending, twisting, buckling, or any other type of damage.
3. The I/P brackets, braces, etc. - Inspect for bending, twisting, buckling, or any other type of damage.
4. The seat belts - Perform the seat belt operational and functional checks. Refer to «Repairs and Inspections Required After a Collision»(/cadillac/xlr/i-2003-2009/remont/restraints-control-systems/#seat-belt-system__repairs-and-inspections-required-after-a) .
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. Passenger seat bottom equipped with the Passenger Presence System (PPS) - Check for any DTCs or problems that may cause the PPS not to function properly.

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, if deployed and after performing the necessary inspections listed above.
2. Inflatable restraint steering wheel module
3. Inflatable restraint sensing and diagnostic module (SDM)
4. Inflatable restraint front end sensors
5. Inflatable restraint side impact modules, front seat air bags, if deploy
6. Inflatable restraint seat belt pretensioners

Perform additional inspections on the following components.

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

Accident With Side Air Bag Deployment - Component Replacement and Inspections

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

1. Inflatable restraint side impact sensors (SIS), on the side of the impact.
2. Inflatable restraint side impact modules, front seat air bags, if deploy
3. Inflatable restraint sensing and diagnostic module (SDM).
4. Inflatable restraint seat belt pretensioners

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. Passenger front seat equipped with the PPS-Inspect for bend or damage to seat bottom.
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 side impact 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 24

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, I/P 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»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 39401-B SIR Deployment Fixture. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
3. J 38826-50 Side impact module adapter
4. J 38826-75 Steering wheel module adapter (dual stage air bags)
5. J 38826-80 I/P module adapter (dual stage air bags)

1. Place the ignition in the OFF position.
2. Put on safety glasses.
3. 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing the instrument panel (I/P) module, refer to «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a side impact module, refer to «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) .
4. Place the inflator module with the vinyl trim cover facing up and away from the surface on a work bench.
5. 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.
6. Make sure no loose or flammable objects are in the area.
7. If you have a steering wheel inflator module, place the inflator module in the center of the space.
8. When deploying the I/P 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»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Fill the deployment fixture with water or sand. Using the proper nuts and bolts, mount the I/P module (1) to the deployment fixture (2), with the vinyl trim facing up. Securely tighten all fasteners that hold the I/P module (1) to the deployment fixture (2).
9. When deploying the 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»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Fill the deployment fixture with water or sand. Using the proper nuts and mount the side impact module (1) to the deployment fixture (3), with the vinyl trim facing up. Adjust and secure the fixture arms (4) to the deployment fixture (3). Securely tighten all fasteners that hold the side impact module (1) to the deployment fixture (3).
10. Inspect the J 38826 and the appropriate pigtail adapter for damage. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Replace as needed.
11. Short the 2 SIR deployment harness leads (1) together using one banana plug seated into the other.
12. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
13. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
14. Connect the inflator module to the adapter (2) on the SIR deployment harness (1).
15. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.
16. Clear the area of people.
17. Separate the 2 banana plugs on the SIR deployment harness.
18. Connect the SIR deployment harness wires to the power source. Inflator module deployment will occur when contact is made.
19. Disconnect the SIR deployment harness from the power source after the inflator module deploys.
20. 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.
21. Seat one banana plug into the other in order to short the deployment harness leads.
22. Put on a pair of shop gloves.
23. Disconnect the pigtail adapter from the inflator module as soon as possible.
24. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
25. Dispose of the deployed inflator module through normal refuse channels.
26. 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. Place the ignition in the OFF position.
2. Put on safety glasses.
3. Remove all loose objects from the front seats.
4. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
5. Remove the connector position assurance (1) from vehicle harness yellow connector (3).
6. Disconnect the steering wheel module yellow connector (4) 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) 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 connector (2) located under the rear 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) 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 I/P module yellow harness connector from the vehicle harness connector.
39. Cut the yellow 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 passenger 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 two connector wire leads (the high circuits from both stages of the I/P module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in order to determine the correct circuits.
45. Inspect that the 3 wire connection is secure.
46. Bend flat the twisted connection.
47. Secure and insulate the 3 wire connection to deployment harness using electrical tape.
48. Twist together 2 connector wire leads (the low circuits from both stages of the I/P module) to one sets of deployment wires. Refer to «SIR Connector End Views»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in order to determine the correct circuits.
49. Inspect that the 3 wire connection is secure.
50. Bend flat the twisted connection.
51. Secure and insulate the 3 wire connection to deployment harness using electrical tape.
52. Connect the deployment harness to the I/P module in-line connector.
53. Route the deployment harness out of the passenger side of the vehicle.
54. Disconnect the passenger side air bag/pretensioner yellow connector (1) from the vehicle wiring harness located under the front of passenger seat.
55. 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.
56. Strip 13 mm (0.5 in) of insulation from all four SIR wires connector leads (2 for side air bag and 2 for pretensioner).
57. 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.
58. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
59. 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.
60. 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) 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. 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) in order to determine the correct circuits.
65. Inspect that the 3 wire connection is secure.
66. Bend flat the twisted connection.
67. Secure and insulate the 3 wire connection to deployment harness using electrical tape.
68. Connect the deployment harness to the passenger side air bag/pretensioner yellow connector.
69. Route the deployment harness out of the passenger side of the vehicle.
70. Completely cover the windshield and front door window openings with a drop cloth.
71. Stretch out all of the deployment harness wires on the right side of the vehicle to their full length.
72. Deploy each deployment loop one at a time.
73. Place a power source, 12 V minimum/2 A minimum (i.e., a vehicle battery) near the shorted end of the harnesses.
74. 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.
75. Disconnect the deployment harness from the power source and twist the wire ends together.
76. Continue the same process with the remaining deployment harnesses that are available.
77. Stretch out all of the deployment harness wires on the left side of the vehicle to their full length.
78. Deploy each deployment loop one at a time.
79. Place a power source, 12 V minimum/2 A minimum (i.e., a vehicle battery) near the shorted end of the harnesses.
80. 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.
81. Disconnect the deployment harness from the power source and twist the wire ends together.
82. Continue the same process with the remaining deployment harnesses that are available.
83. Remove the drop cloth from the vehicle.
84. Disconnect all harnesses from the vehicle.
85. Discard the harnesses.
86. Scrap the vehicle in the same manner as a non-SIR equipped vehicle.
87. 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/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Instrument Panel Module Replacement»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system) «Inflatable Restraint Side Impact Module Replacement - Front»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system)

Scheme 25

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

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

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

Deployment Inside the Vehicle

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

Deployment Outside Vehicle for Seat Belt Pretensioners

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

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

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

Tools Required

1. J 39401-B SIR Deployment Fixture. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
2. J 38826 SIR Deployment Harness. See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
3. J 38826-25 for seat belt pretensioner module adapter

1. Turn the ignition switch to the OFF position.
2. Remove the ignition key.
3. Put on safety glasses.
4. Remove the seat belt pretensioner from the vehicle. Refer to «Seat Belt Buckle Pretensioner Replacement»(/cadillac/xlr/i-2003-2009/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»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) .
9. Fill the fixture plastic reservoir with water or sand.
10. Mount the module (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method. Adjust and secure the J 39401-B arms (4) to the deployment fixture (3). See «Special Tools»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . 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»(/cadillac/xlr/i-2003-2009/remont/airbag/#supplemental-inflatable-restraint-system__special-tools) . Replace as needed.
12. Short the 2 SIR deployment harness (1) leads together using one banana plug seated into the other.
13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
14. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
15. Connect the pretensioner (1) to the adapter (2) on the deployment harness (3).
16. Clear the area of people.
17. Separate the 2 banana plugs on the SIR deployment harness.
18. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.
19. Connect the SIR deployment harness wires to the power source. Pretensioner deployment will occur when contact is made.
20. Disconnect the SIR deployment harness from the power source after the pretensioner deploys.
21. Seat one banana plug into the other in order to short the deployment harness leads.
22. If the pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
23. Put on a pair of shop gloves.
24. Disconnect the pigtail adapter from the pretensioner as soon as possible.
25. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
26. Dispose of the deployed pretensioner through normal refuse channels.
27. Wash hands with a mild soap.

Scheme 26

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) and instrument panel (I/P) module (1). 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. 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 body control module (BCM). The BCM 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. Inflatable restraint sensing and diagnostic module (SDM)
2. Inflatable restraint passenger presence system (PPS)
3. Inflatable restraint passenger AIR BAG ON/OFF indicator
4. AIR BAG indicator located in the instrument panel cluster (IPC)
5. Inflatable restraint steering wheel module
6. Inflatable restraint instrument panel (I/P) module
7. Inflatable restraint seat position switch (SPS) (left/right)
8. Inflatable restraint seat belt pretensioners (left/right)
9. Inflatable restraint front end sensor (left/right)
10. Inflatable restraint steering wheel module coil
11. Driver and passenger knee bolsters
12. Inflatable restraint wiring harnesses
13. Steering wheel and column

A frontal collision of sufficient force 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 front end sensors which assists the SDM in determining the severity of some frontal collisions. The SDM contains a microprocessor that performs calculations using the measured accelerations. The SDM 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. Once the air bags are inflated, they quickly deflate through the air bag vent holes. After the air bags have deployed, the SDM sets a DTC and requests the IPC to turn the AIR BAG indicator ON. The SDM, I/P module, steering wheel module, steering wheel module coil, and the connecting wires make up 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 supplemental inflatable restraint (SIR) system. This SDM has 2 fused power inputs: one fuse is for the battery voltage and the other fuse is for the ignition voltage. The SDM uses vehicle battery voltage as its main power input. The SDM then uses the vehicles serial data communication line and the ignition voltage logic input for enabling or disabling the SIR deployment loops. 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 or seat belt pretensioners. If the force of the impact is not sufficient to warrant inflator module deployment, the SDM may still deploy the seat belt pretensioners. The SDM records the SIR system status when a deployment occurs and turns the AIR BAG indicator located in the instrument panel cluster (IPC) ON. As soon as 3 distinct deployment commands, representing different events, have been issued to any belt pretensioner, or the SDM commands any front and side air bag to deploy once, the SDM shall be considered to not be reusable. 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 exists. 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.

Inflatable Restraint Passenger Presence System

The PPS is used to monitor the weight of an occupant on the front outboard passenger seat and communicate the status to the sensing and diagnostic module (SDM) whether to enable or suppress the deployment of the instrument panel (I/P) module and the right front side impact module. The PPS consist of an electronic control module, silicone filled sensor pad, pressure sensor, seat belt tension retractor sensor, wiring harness, and PASSENGER AIR BAG ON/OFF indicators. The silicone filled sensor pad is located under the passenger seat foam cushion and is connected by a hose clamped to the pressure sensor. The weight of the occupant sitting in the front passenger seat is measured as a pressure change within the bladder by the pressure sensor. The pressure sensor sends a voltage signal to the PPS module. If the pressure from the occupants weight is less than a specified value, the PPS module will send a suppress signal to the SDM to disable the I/P and the right front side impact modules. If the pressure from the occupants weight is higher than a specified value, the PPS module will send an enable signal to the SDM to enable the I/P and the right front side impact modules. The PPS module will notify the customer of the enable/disable status by turning ON one of the PASSENGER AIR BAG ON/OFF indicators located on the rearview mirror. The PPS monitors itself for faults and will set DTCs if a fault is detected. The PPS will also notify the SDM of a fault. The SDM will respond by requesting the instrument panel cluster (IPC) to turn the AIR BAG indicator ON.

Inflatable Restraint PASSENGER AIR BAG ON/OFF indicator

The PASSENGER AIR BAG ON/OFF indicators located in the rearview mirror is used to notify the driver and passenger when the I/P air bag is enable or disable.

AIR BAG Indicator

The AIR BAG indicator, located on the instrument panel cluster (IPC) is used to notify the driver of supplemental inflatable restraint (SIR) system malfunctions and to verify that the sensing and diagnostic module (SDM) is communicating with the IPC. When the ignition is turned ON, the SDM is supplied with ignition 1 voltage and requests the IPC to flash the AIR BAG indicator 7 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 serial data communication circuit and request the IPC to turn 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 DTC and request the IPC to turn the AIR BAG indicator ON. The presence of a SIR system malfunction could result in non-deployment of the air bags. The AIR BAG indicator will remain ON until the malfunction has been repaired.

Dual Stage Inflator Modules

Dual stage inflator modules contain a housing, inflatable air bag, 2 initiating devices, canister of gas generating material and, in some cases, stored compressed gas. The 2 initiators are part of the inflator module deployment loop. The inflator modules have 2 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 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. When the vehicle is involved in a collision of sufficient force, the sensing and diagnostic module (SDM) will cause current to flow through the deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas and the release of compressed gas, if present. The gas produced from this reaction rapidly inflates the air bag. Once the air bag is inflated, it quickly deflates through the air bag vent holes.

Each dual stage inflator module is equipped with a shorting bar located on the connectors 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 Seat Position Switch (SPS)

The seat position switch (SPS) is used to determine the proximity of a front driver or passenger seat position with respect to the frontal air bag. The SPS interfaces with the sensing and diagnostic module (SDM). The state of the SPS allows the SDM to disable stage 2 of the frontal air bag for a front seat that is forward of a forward or rearward point in seat track travel. The SPS is a hall effect sensor that is mounted on the outboard seat track of both the driver and passenger seats. The seat track includes a metal bracket that shunts the SPS magnetic circuit creating 2 states of seat position. The shunted state represents a rearward seat position. The non-shunted state represents a forward position. The SPS provides 2 current ranges, one range for the shunted state and a second range for a non-shunted state. These 2 states are inputs to the SDM. State 1 (shunted) being the rearward threshold and state 2 (non-shunted) being the forward threshold. When the SDM receives input from a SPS that state 1 threshold is reached (seat is rearward), the SDM will not disable stage 2 deployment, if required by the deployment sensors. When state 2 threshold is reached (seat is forward), the SDM will disable stage 2 deployment on the side the seat is forward. The SDM monitors the SPS circuit and if a fault is detected the SDM will set codes B0083 or B0084 and defaults to disabling stage 2 frontal deployment. This will only default on the side of the vehicle the sensor has a fault.

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 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 2 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. Four 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 it is disconnected.

Inflatable Restraint Front End Sensors

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

Driver and Passenger Knee Bolsters

The knee bolsters are designed to help restrain the lower torsos of front seat occupants by absorbing energy through the front seat occupants' upper legs. In a frontal collision, the front seat occupants 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 damage after a collision.

Inflatable Restraint Wiring Harnesses

The inflatable restraint wiring harnesses connect the sensing and diagnostic module (SDM), inflator modules, front end sensors, side impact sensors, seat position switches (SPS), and the serial data communication circuit together using weather pack connectors. Only the supplemental inflatable restraint (SIR) deployment loop connectors are yellow in color for easy identification. When repairing SIR system wiring harnesses, follow the proper testing and wiring repair procedures outlined in this manual.

Steering Wheel and Column

The steering wheel and column 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 contact 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 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 damage after a collision.

Side SIR System Description

The side supplemental inflatable restraint (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 wiring harnesses

The side impact modules are located in the outside portion of the front seat backs. The side impact modules contain a housing, inflatable air bag, initiating device, and a canister of gas generating material. The initiator is part of the side impact 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 air bags. The SDM, side impact modules, and the connecting wires make up 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 module is equipped with a shorting bar located on the connector of the module. The shorting bar shorts the side impact modules deployment loop circuitry to prevent unwanted deployment of the air bag when servicing the inflator module.

Inflatable Restraint Side Impact Sensor (SIS)

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

Special Tools

Special Tools Illustration Tool Number/ Description J 38715-A SIR Driver and Passenger Load Tool J 38826 SIR Deployment Harness J 39401-B SIR Deployment Fixture J 42640 Steering Column Anti-Rotation Pine J 44298 Driver Air Bag Removal Tool

Scheme 27

See also:
• Diagnostic System Check - Vehicle
• Diagnostic Trouble Code (DTC) List - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• SIR/SRS Wiring Repairs
• Diagnostic Repair Verification
• Seat Belt Retractor Replacement - Right Front
• Control Module References
• Checking Aftermarket Accessories
• Electrical Center Identification Views
• Battery Negative Cable Disconnection and Connection
• Fastener Notice
• Door Trim Panel Replacement
• SIR Caution
• Instrument Panel Accessory Trim Plate Replacement
• SIR Inflator Module Handling and Storage Caution
• Steering Wheel Replacement
• Inflatable Restraint Steering Wheel Module Coil Centering
• Seat Replacement
• 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
• DTC B0012, B0013, B0014, B0016, B0017, or B0018
• Special Tools
• SIR Identification Views