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Supplemental Inflatable Restraint System Cadillac CTS II

Airbag 22 illustrations ~17914 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Driver or Passenger Seat Belt Tensioner Assembly Fastener45 N.m33 lb ft
Driver or Passenger Seat Belt Tensioner Fastener6 N.m53 lb in
Front Seat Belt Tensioner Fastener6 N.m53 lb in
Inflatable Restraint Front End Sensor Mounting Bolt11 N.m97 lb in
Inflatable Restraint Front Seat Side Module Nut9 N.m80 lb in
Inflatable Restraint Sensing and Diagnostic Module Bolt7 N.m56 lb in
Inflatable Restraint Sensing and Diagnostic Module Nut7 N.m56 lb in
Inflatable Restraint Side Impact Sensor Assembly Bolt9 N.m80 lb in
Inflatable Restraint Side Impact Sensor Module Bolt9 N.m80 lb in
Inflatable Restraint Steering Wheel Module Coil Bolt3 N.m27 lb in
Instrument Panel Inflatable Restraint Module Nuts10 N.m89 lb in
Roof Side Rail Inflatable Restraint Module Electrical Harness Bolt9 N.m80 lb in
Roof Side Rail Inflatable Restraint Module Integral Bolts9 N.m80 lb in
Seat Shoulder Belt Guide Fastener47 N.m35 lb ft
Seat Shoulder Belt Retractor Fastener45 N.m33 lb ft
Seat Belt Retractor Anchor Plate Nut47 N.m35 lb ft

Scheme 1

Scheme 1: SIR Schematics
Scheme 1: SIR Schematics

Scheme 2

Scheme 2
Scheme 2

Scheme 3

Scheme 3
Scheme 3

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 .

Scheme 4

Scheme 4: SIR Identification Views
Scheme 4: SIR Identification Views
CalloutComponent Name
1Front End Sensor, Right-Located on the front of the vehicle in the engine compartment
2Front Hood Assist Rod-A gas shock located under the front hood on the passenger side
3I/P Air Bag-Located at the top right under the instrument panel
4Right Roof Rail Air Bag-Located under the headliner, extending from the passenger front windshield pillar to the passenger rear windshield pillar
5Sensing and Diagnostic Module (SDM)-Located underneath the vehicle carpet under the center console
6Side Impact Sensor (SIS), RF-Located inside front passenger door
7Passenger Presence System-Located under the front passenger seat trim cover
8Seat Position Sensor, Passenger-Located under seat, mounted to cross beam, inboard side
9Seat Belt Anchor Tensioner, RF-Located on the outboard side of the passenger seat
10Side Impact Air Bag, RF-Located on the seat back of passenger seat
11Seat Belt Retractor Pretensioner-Located under the trim near the bottom of the center pillar
12Seat Belt Buckle Switch, RF-Located within the seat belt buckle assembly
13Side Impact Sensor (SIS), RR-Located inside rear passenger door
14Inflator Module for Roof Rail Air Bag-Located on the passengers side behind the garnish molding on the upper rear pillar
15Rear Compartment Lid Assist Rod-A gas shock is located under the rear trunk lid on the passenger side
16Vehicle Battery-Located inside rear compartment on the passenger side behind the trim
17Rear Compartment Lid Assist Rod-A gas shock is located under the rear trunk lid on the driver side
18Inflator Module for Roof Rail Air Bag-Located on the driver side behind the garnish molding on the upper rear pillar
19Side Impact Sensor (SIS), LR-Located inside rear passenger door
20Seat Belt Buckle Switch, LF-Located within the seat belt buckle assembly
21Seat Belt Retractor Pretensioner-Located under the trim near the bottom of the center pillar
22Side Impact Air Bag, LF-Located on the seat back of driver seat
23Seat Belt Anchor Tensioner, LF-Located on the outboard side of the driver seat
24Seat Position Sensor, Driver-Located under seat, mounted to cross beam, inboard side, if equipped
25Side Impact Sensor (SIS), LF-Located inside driver door
26Left Roof Rail Air Bag-Located under the headliner, extending from the driver front windshield pillar to the driver rear windshield pillar
27Steering Wheel Air Bag-Located on the steering wheel
28Front End Sensor, Left-Located on the front of the vehicle in the engine compartment

DIAGNOSTIC CODE INDEX

DTCDescription
DTC B0012 or B0013B0012 01: Driver Frontal Deployment Loop Stage 1 Short to Battery B0012 02: Driver Frontal Deployment Loop Stage 1 Short to Ground B0012 04: Driver Frontal Deployment Loop Stage 1 Open Circuit B0012 0D: Driver Frontal Deployment Loop Stage 1 Resistance Above Threshold B0012 0E: Driver Frontal Deployment Loop Stage 1 Resistance Below Threshold B0013 01: Driver Frontal Deployment Loop Stage 2 Short to Battery B0013 02: Driver Frontal Deployment Loop Stage 2 Short to Ground B0013 04: Driver Frontal Deployment Loop Stage 2 Open Circuit B0013 0D: Driver Frontal Deployment Loop Stage 2 Resistance Above Threshold B0013 0E: Driver Frontal Deployment Loop Stage 2 Resistance Below Threshold
DTC B0014-B0045B0014 01: Driver Side Deployment Loop Short to Battery - Seat Air Bag B0014 02: Driver Side Deployment Loop Short to Ground - Seat Air Bag B0014 04: Driver Side Deployment Loop Open Circuit - Seat Air Bag B0014 0D: Driver Side Deployment Loop Resistance Above Threshold - Seat Air Bag B0014 0E: Driver Side Deployment Loop Resistance Below Threshold - Seat Air Bag B0015 01: Driver Pretensioner Deployment Loop Short to Battery - Retractor B0015 02: Driver Pretensioner Deployment Loop Short to Ground - Retractor B0015 04: Driver Pretensioner Deployment Loop Open Circuit - Retractor B0015 0D: Driver Pretensioner Deployment Loop Resistance Above Threshold - Retractor B0015 0E: Driver Pretensioner Deployment Loop Resistance Below Threshold - Retractor B0016 01: Left Roof Rail Deployment Loop Stage 1 Short to Battery B0016 02: Left Roof Rail Deployment Loop Stage 1 Short to Ground B0016 04: Left Roof Rail Deployment Loop Stage 1 Open Circuit B0016 0D: Left Roof Rail Deployment Loop Stage 1 Resistance Above Threshold B0016 0E: Left Roof Rail Deployment Loop Stage 1 Resistance Below Threshold B0019 01: Passenger Frontal Deployment Loop Stage 1 Short to Battery B0019 02: Passenger Frontal Deployment Loop Stage 1 Short to Ground B0019 04: Passenger Frontal Deployment Loop Stage 1 Open Circuit B0019 0D: Passenger Frontal Deployment Loop Stage 1 Resistance Above Threshold B0019 0E: Passenger Frontal Deployment Loop Stage 1 Resistance Below Threshold B0020 01: Passenger Frontal Deployment Loop Stage 2 Short to Battery B0020 02: Passenger Frontal Deployment Loop Stage 2 Short to Ground B0020 04: Passenger Frontal Deployment Loop Stage 2 Open Circuit B0020 0D: Passenger Frontal Deployment Loop Stage 2 Resistance Above Threshold B0020 0E: Passenger Frontal Deployment Loop Stage 2 Resistance Below Threshold B0021 01: Passenger Side Deployment Loop Short to Battery - Seat Air Bag B0021 02: Passenger Side Deployment Loop Short to Ground - Seat Air Bag B0021 04: Passenger Side Deployment Loop Open Circuit - Seat Air Bag B0021 0D: Passenger Side Deployment Loop Resistance Above Threshold - Seat Air Bag B0021 0E: Passenger Side Deployment Loop Resistance Below Threshold - Seat Air Bag B0022 01: Passenger Pretensioner Deployment Loop Short to Battery - Retractor B0022 02: Passenger Pretensioner Deployment Loop Short to Ground - Retractor B0022 04: Passenger Pretensioner Deployment Loop Open Circuit - Retractor B0022 0D: Passenger Pretensioner Deployment Loop Resistance Above Threshold - Retractor B0022 0E: Passenger Pretensioner Deployment Loop Resistance Below Threshold - Retractor B0023 01: Right Roof Rail Deployment Loop Stage 1 Short to Battery B0023 02: Right Roof Rail Deployment Loop Stage 1 Short to Ground B0023 04: Right Roof Rail Deployment Loop Stage 1 Open Circuit B0023 0D: Right Roof Rail Deployment Loop Stage 1 Resistance Above Threshold B0023 0E: Right Roof Rail Deployment Loop Stage 1 Resistance Below Threshold
DTC B0052, B0053, or B0055B0052 00: Deployment Commanded B0053 00: Deployment Commanded With Loop DTCs Present B0055 00: Side Airbag Deployment Commanded
DTC B0056-B0058B0056 00: Passenger Frontal Airbag Suppressed B0057 00: Passenger Side Airbag Suppressed B0058 00: Passenger Pretensioner Suppressed
DTC B0072 or B0073B0072 01: Left Front Seat Belt Sensor Circuit Short to Battery B0072 02: Left Front Seat Belt Sensor Circuit Short to Ground B0072 04: Left Front Seat Belt Sensor Circuit Open Circuit B0072 06: Left Front Seat Belt Sensor Circuit Short To Ground or Open Circuit B0072 08: Left Front Seat Belt Sensor Circuit Signal Invalid B0073 01: Right Front Seat Belt Sensor Circuit Short to Battery B0073 02: Right Front Seat Belt Sensor Circuit Short to Ground B0073 04: Right Front Seat Belt Sensor Circuit Open Circuit B0073 06: Right Front Seat Belt Sensor Circuit Short To Ground or Open Circuit B0073 08: Right Front Seat Belt Sensor Circuit Signal Invalid
DTC B0074B0074 00: Passenger Occupant Classification Sensor B0074 0D: Passenger Occupant Classification Sensor Circuit Resistance Above Threshold B0074 0E: Passenger Occupant Classification Sensor Circuit Resistance Below Threshold B0074 0F: Passenger Occupant Classification Sensor Circuit Erratic (Wet Seat)
DTC B0079B0079 01: Driver Seat Position Sensor Circuit Short to Battery B0079 02: Driver Seat Position Sensor Circuit Short to Ground B0079 04: Driver Seat Position Sensor Circuit Open B0079 06: Driver Seat Position Sensor Circuit Short to Ground or Open Circuit B0079 08: Driver Seat Position Sensor Circuit Signal Invalid
DTC B0080B0080 01: Passenger Seat Position Sensor Circuit Short to Battery B0080 02: Passenger Seat Position Sensor Circuit Short to Ground B0080 04: Passenger Seat Position Sensor Circuit Open B0080 06: Passenger Seat Position Sensor Circuit Short to Ground or Open Circuit B0080 08: Passenger Seat Position Sensor Circuit Signal Invalid
DTC B0081B0081 0F: Passenger Presence System Erratic B0081 11: Passenger Presence System Above Threshold (Build Check Failure) B0081 3A: Passenger Presence System Incorrect Component Installed B0081 4B: Passenger Presence System Calibration Not Learned B0081 5A: Passenger Presence System Plausibility Failure B0081 71: Passenger Presence System Invalid Serial Data Received
DTC B0083-B0088B0083 00: Front End Sensor 1 (Left) B0083 0F: Front End Sensor 1 Erratic (Left) B0083 39: Front End Sensor 1 Internal Electronic Failure (Left) B0083 3A: Front End Sensor 1 Incorrect Component Installed (Left) B0084 00: Front End Sensor 2 (Right) B0084 0F: Front End Sensor 2 Erratic (Right) B0084 39: Front End Sensor 2 Internal Electronic Failure (Right) B0084 3A: Front End Sensor 2 Incorrect Component Installed (Right) B0085 00: LF Side Impact Sensor B0085 0F: LF Side Impact Sensor Erratic B0085 39: LF Side Impact Sensor Internal Electronic Failure B0085 3A: LF Side Impact Sensor Incorrect Component Installed B0086 00: RF Side Impact Sensor B0086 0F: RF Side Impact Sensor Erratic B0086 39: RF Side Impact Sensor Internal Electronic Failure B0086 3A: RF Side Impact Sensor Incorrect Component Installed B0087 00: LR Side Impact Sensor B0087 0F: LR Side Impact Sensor Erratic B0087 39: LR Side Impact Sensor Internal Electronic Failure B0087 3A: LR Side Impact Sensor Incorrect Component Installed B0088 00: RR Side Impact Sensor B0088 0F: RR Side Impact Sensor Erratic B0088 39: RR Side Impact Sensor Internal Electronic Failure B0088 3A: RR Side Impact Sensor Incorrect Component Installed
DTC B1001 (PPS)B1001 00: Option Configuration Error
DTC B1001 (SDM)B1001 00: SDM Option Configuration Error
DTC B1019B1019 00: SDM System Configuration Error B1019 3A: SDM System Configuration Error Incorrect Component Installed
DTC B1370B1370 06: Device Ignition 1 Circuit Short to Ground or Open

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

CircuitShort to GroundLow ResistanceHigh ResistanceOpenShort to Voltage
Steering Wheel Module Stage 1 HighB0012 02B0012 0EB0012 0DB0012 04B0012 01
Steering Wheel Module Stage 1 LowB0012 02B0012 0EB0012 0DB0012 04B0012 01
Steering Wheel Module Stage 2 HighB0013 02B0013 0EB0013 0DB0013 04B0013 01
Steering Wheel Module Stage 2 LowB0013 02B0013 0EB0013 0DB0013 04B0013 01

Circuit/System Description

During a frontal crash of sufficient force the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy the steering wheel module. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage.

There are 2 shorting bars used within the steering wheel module coil connector which will short together both steering wheel module stage 1 high circuit and steering wheel module stage 1 low circuit and both steering wheel module stage 2 high circuit and steering wheel module stage 2 low circuit when the connector is disconnected. This will help to prevent unwanted deployment of the inflator module during servicing.

Conditions for Running the DTC

Ignition voltage is between 9-16 volts.

B0012 01 Stage 1 or B0013 01 Stage 2

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

B0012 02 Stage 1 or B0013 02 Stage 2

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

B0012 04 Stage 1 or B0013 04 Stage 2

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

B0012 0D Stage 1 or B0013 0D Stage 2

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

B0012 0E Stage 1 or B0013 0E Stage 2

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

Action Taken When the DTC Sets

  1. The SDM request the instrument panel cluster (IPC) to illuminate the AIR BAG indicator ON.
  2. The SIR system is disabled and no deployments are allowed.
  3. The SDM will store a DTC, however if an event occurs the system will still attempt deployments.

Conditions for Clearing the DTC

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

Reference Information

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

  1. J 38715-A SIR Driver/Passenger Load Tool. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  2. SA9409Z-A SIR Driver/Passenger Load Tool

Circuit/System Testing

IMPORTANTRefer to SIR Service Precautions . When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector: Pretensioner Air bag module SDM Air bag wiring harness connector SDM wiring harness connector
  1. Verify that the steering wheel module connector and CPA are engaged. If the CPA or connector is not properly engaged, make the appropriate repair.
  2. Ignition OFF, disconnect the harness connector at the steering wheel module.
  3. With the appropriate load tool adaptor, connect special tool J 38715-A or SA9409Z-A in place of the inflator restraint module. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  4. Ignition ON, verify the DTC is set as current. If the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A or SA9409Z-A , reconnect the harness connector at the steering wheel module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the steering wheel module.
  5. Ignition OFF, disconnect special tool J 38715-A or SA9409Z-A and the adaptor. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  6. Disconnect the harness connector at the steering wheel module coil.
  7. With the appropriate adaptor, connect special tool J 38715-A or SA9409Z-A . See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  8. Ignition ON, verify the DTC is set as current. If the DTC is not set or is set as history, replace the steering wheel module coil.
  9. Ignition OFF, disconnect special tool J 38715-A or SA9409Z-A and the adaptor. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  10. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal and ground. Stage 1 terminal 1 Stage 2 terminal 3 If greater than the specified range, test the control circuit for a short to voltage.
  11. Test for less than 1 volt between the appropriate low control circuit terminal and ground. Stage 1 terminal 2 Stage 2 terminal 4 If greater than the specified range, test the control circuit for a short to voltage.
  12. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground. Stage 1 terminal 1 Stage 2 terminal 3 If not the specified value, test the control circuit for a short to ground.
  13. Test for infinite resistance between the appropriate low control circuit terminal and ground. Stage 1 terminal 2 Stage 2 terminal 4 If not the specified value, test the control circuit for a short to ground.
  14. Disconnect the harness connector at the SDM.
  15. Test for less then 1 ohm between the following high control circuit terminals. Steering wheel module coil connector Stage 1 terminal 1 X3 and SDM terminal 9 Steering wheel module coil connector Stage 2 terminal 3 X3 and SDM terminal 5 If not within the specified range, test the control circuit for an open/high resistance.
  16. Test for less then 1 ohm between the following low control circuit terminals. Steering wheel module coil connector Stage 1 terminal 2 X3 and SDM terminal 8 Steering wheel module coil connector Stage 2 terminal 4 X3 and SDM terminal 4 If not within the specified range, test the circuit for an open/high resistance.
  17. If all circuits test normal, replace the SDM.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «Steering Wheel Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  2. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  3. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.
CircuitShort to GroundLow ResistanceHigh ResistanceOpenShort to Voltage
Side Impact Module - Left - Low ControlB0014 02B0014 0EB0014 0DB0014 04B0014 01
Side Impact Module - Left - High ControlB0014 02B0014 0EB0014 0DB0014 04B0014 01
Seat Belt Pretensioner - Driver Low ControlB0015 02B0015 0EB0015 0DB0015 04B0015 01
Seat Belt Pretensioner - Driver - High ControlB0015 02B0015 0EB0015 0DB0015 04B0015 01
Roof Rail Module - Left - Low ControlB0016 02B0016 0EB0016 0DB0016 04B0016 01
Roof Rail Module - Left - High ControlB0016 02B0016 0EB0016 0DB0016 04B0016 01
IP Module - Stage 1 - Low ControlB0019 02B0019 0EB0019 0DB0019 04B0019 01
IP Module - Stage 1 - High ControlB0019 02B0019 0EB0019 0DB0019 04B0019 01
IP Module - Stage 2 - Low ControlB0020 02B0020 0EB0020 0DB0020 04B0020 01
IP Module - Stage 2 - High ControlB0020 02B0020 0EB0020 0DB0020 04B0020 01
Side Impact Module - Right - Low ControlB0021 02B0021 0EB0021 0DB0021 04B0021 01
Side Impact Module - Right - High ControlB0021 02B0021 0EB0021 0DB0021 04B0021 01
Seat Belt Pretensioner - Passenger - Low ControlB0022 02B0022 0EB0022 0DB0022 04B0022 01
Seat Belt Pretensioner - Passenger - High ControlB0022 02B0022 0EB0022 0DB0022 04B0022 01
Roof Rail Module - Right - Low ControlB0023 02B0023 0EB0023 0DB0023 04B0023 01
Roof Rail Module - Right - High ControlB0023 02B0023 0EB0023 0DB0023 04B0023 01

During a side or frontal crash of sufficient force, the inflatable restraint sensing and diagnostic module (SDM) will allow current to flow through the deployment loop in order to deploy an inflatable restraint module. There are 2 shorting bars used within the module connector which will short together both 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 V.

B0014 01, B0015 01, B0016 01, B0019 01, B0020 01, B0021 01, B0022 01, B0023 01

The inflatable restraint module high and/or low circuit is shorted to voltage for 120 milliseconds.

B0014 02, B0015 02, B0016 02, B0019 02, B0020 02, B0021 02, B0022 02, B0023 02

The inflatable restraint module high and/or low circuit is shorted to ground for 120 milliseconds.

B0014 04, B0015 04, B0016 04, B0019 04, B0020 04, B0021 04, B0022 04, B0023 04

The inflatable restraint module high and/or low circuit is open for 120 milliseconds.

B0014 0D, B0015 0D, B0016 0D, B0019 0D, B0020 0D, B0021 0D, B0022 0D, B0023 0D

The inflatable restraint module deployment loop resistance is greater than 3.9 ohms for 120 milliseconds.

B0014 0E, B0015 0E, B0016 0E, B0019 0E, B0020 0E, B0021 0E, B0022 0E, B0023 0E

The inflatable restraint module deployment loop resistance is less than 1.1 ohms for 120 milliseconds.

  1. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator ON.
  2. The SDM will store a DTC, however if an event occurs the system will still attempt deployments.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Special Tools

  1. J 38715-A SIR Driver/Passenger Load Tool. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  2. SA9409Z-A SIR Driver/Passenger Load Tool

Note. Refer to SIR Service Precautions . When removing connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector: The pretensioner The inflatable restraint module The SDM The inflatable restraint module wiring harness connector The SDM wiring harness connector

  1. Verify that the appropriate inflator restraint module connector and the CPA are engaged. If the connector or CPA is not properly engaged, make the appropriate repair.
  2. Ignition OFF, disconnect the harness connector at the appropriate inflator restraint module.
  3. With the appropriate load tool adaptor, connect J 38715-A in place of the inflator restraint module. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  4. Ignition ON, with a scan tool, verify DTC is set as current. If the DTC is not set or is set as history, cycle ignition OFF, disconnect the J 38715-A and the adapter, reconnect the harness connector at the inflatable restraint module and cycle the ignition ON. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . If the DTC resets after reconnecting the module, replace the inflatable restraint module.
  5. Disconnect the harness connector at the SDM.
  6. Ignition ON, test for less than 1 V between the appropriate high control circuit terminal and ground. I/P module Stage 1 terminal 1 X1 I/P module Stage 2 terminal 2 X2 Driver roof rail module terminal A Passenger right roof rail module terminal A (RHD) Right roof rail module terminal B Left side impact module terminal 2 Right side impact module terminal 2 Driver seat belt pretensioner terminal 1 Passenger seat belt pretensioner terminal 1 If greater than the specified range, test the control circuit for a short to voltage.
  7. Test for less than 1 V between the appropriate low control circuit terminal and ground. I/P module Stage 1 terminal 2 X1 I/P module Stage 2 terminal 1 X2 Driver roof rail module terminal B Passenger roof rail module terminal A Left side impact module terminal 1 Right side impact module terminal 1 Driver seat belt pretensioner terminal 2 Passenger seat belt pretensioner terminal 2 If greater than the specified range, test the circuit control for a short to voltage.
  8. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground. I/P module Stage 1 terminal 1 X1 I/P module Stage 2 terminal 2 X2 Driver roof rail module terminal A Passenger right roof rail module terminal A (RHD) Passenger right roof rail module terminal B Left side impact module terminal 2 Right side impact module terminal 2 Driver seat belt pretensioner terminal 1 Passenger seat belt pretensioner terminal 1 If not the specified value, test the control circuit for a short to ground.
  9. Test for infinite resistance between the appropriate low control circuit terminal and ground. I/P module Stage 1 terminal 2 X1 I/P module Stage 2 terminal 1 X2 Driver roof rail module terminal B Passenger roof rail module terminal A Left side impact module terminal A Right side impact module terminal A Driver seat belt pretensioner terminal 1 Passenger seat belt pretensioner terminal 1 If not the specified value, test the control circuit for a short to ground.
  10. Test for less than 1 ohms between the following high control circuit terminals. I/P module Stage 1 terminal 1 X1 and SDM terminal 5 I/P module Stage 2 terminal 2 X2 and SDM terminal 8 Driver roof rail module terminal A and SDM terminal 17 X2 Passenger roof rail module terminal A and SDM terminal 53 X2 Left side impact module terminal 2 and SDM terminal 13 X2 Right side impact module terminal 2 and SDM terminal 16 X2 Driver seat belt pretensioner terminal 1 and SDM terminal 9 X2 Passenger seat belt pretensioner terminal 1 and SDM terminal 12 X2 If greater than the specified range, test the control circuit for an open/high resistance.
  11. Test for less than 1 ohms between the following low control circuit terminals. I/P module Stage 1 terminal 2 X1 and SDM terminal 6 I/P module Stage 2 terminal 1 X2 and SDM terminal 7 Driver roof rail module terminal B and SDM terminal 18 X2 Passenger roof rail module terminal B and SDM terminal 54 X2 Left side impact module terminal 1 and SDM terminal 14 X2 Right side impact module terminal 1 and SDM terminal 15 X2 Driver seat belt pretensioner terminal 2 and SDM terminal 10 X2 Passenger seat belt pretensioner terminal 2 and SDM terminal 11 X2 If greater than the specified range, test the control circuit for an open/high resistance.
  12. If all circuits test normal, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «Instrument Panel Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  2. «Roof Side Rail Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  3. «Seat Belt Retractor Pretensioner Replacement - Front (W2E)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) or «Seat Belt Retractor Pretensioner Replacement - Front (AQ9)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  4. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  5. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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

Ignition voltage is between 9-16 volts.

B0052 00

  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 and/or roof rail module.
  3. The SDM has deployed the seat belt pretensioner for 3 separate deployments.

B0053 00

SDM commands inflators deployment with loop faults present.

B0055 00

  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 and/or roof rail module.
  1. The SDM will only set DTC B0052, or DTC B0055, or the SDM sets DTC B0053 along with DTC B0052.
  2. The SDM commands the AIR BAG warning lamp ON.
  3. The SDM records crash data.
  1. DTC B0052 can be cleared if the following conditions are met. Three consecutive seat belt pretensioner deployment events have not occurred. One frontal or side air bag deployment has not occurred.
  2. DTC B0052 becomes a latched DTC after 3 consecutive pretensioner deployments or 1 frontal or side air bag deployment. The DTC is a latched DTC and cannot be cleared. Replace the SDM after following the instructions in the diagnostic test.
  3. DTC B0055 is a latched DTC and cannot be cleared.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information.

Circuit/System Verification

IMPORTANTThe seat belt pretensioners may deploy for impacts that are not severe enough to warrant frontal or side air bag deployment. The SDM is capable of sustaining 3 pretensioner deployment events, or one frontal or side deployment event. After the maximum number of deployments has occurred, DTC B0052 sets and becomes a latched code, which cannot be cleared.
  1. Verify DTC B0055 is not set. If DTC B0055 is set, replace SDM.
  2. Verify DTC B0052 is not set. If DTC B0052 is set, clear the DTC and operate the vehicle within the conditions for running the DTC. If the DTC resets, replace the SDM.
  3. Verify DTC B0053 is not set. If DTC is set along with additional DTCs, repair the malfunction causing the DTCs before replacing the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Refer to Control Module References for SDM replacement, setup, and programming

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the passenger presence system (PPS) and the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. The PPS is used to monitor the weight of an occupant in the front passenger seat. If the pressure from the occupant's weight is less than a specified value or an empty seat is detected, the PPS module will send a suppress signal to the SDM to disable the instrument panel (I/P) module. When the PPS detects a fault within itself, then the PPS will communicate to the SDM through serial data communications that a PPS fault is present. The SDM will disable the deployment of the module and then turn the AIR BAG indicator ON.

Ignition voltage is between 9-16 volts.

Conditions for Setting the DTC

This DTC is set when the SDM has commanded an air bag deployment while the PPS has determined that the front passenger seat has one the following conditions

  1. The pressure from the occupants weight is less than a specified value. The PPS module sent a disable signal to the SDM to disable the I/P module.
  2. Empty front passenger seat
  3. A PPS fault was detected
  1. DTC B0056 and B0058 will only set if there is a child seated or the passenger seat is empty.
  2. DTC B0052, B0053, or B0055 will set along with this DTC.
  3. The SDM commands the AIR BAG indicator ON.

Any of the codes will set along with one of the following latched codes: DTC B0052, B0053, or B0055 and cannot be cleared.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

  1. Ignition OFF, verify that the vehicle does not show any signs of inflator module or pretensioner deployment. If the vehicle displays any signs of inflator deployment, refer to «Repairs and Inspections Required After a Collision»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  2. Verify DTC B0052, B0053, or B0055 is not set. If DTC is set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) .
  3. Clear DTCs. Verify DTC B0056, B0057, or B0058 is not set. If any of the DTCs are set, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
Driver Seat Belt Switch SignalB0072 02B0072 04B0072 01B0072 08
Passenger Seat Belt Switch SignalB0073 02B0073 04B0073 01B0073 08
Low ReferenceB0072 04, B0073 04

The seat belt buckle switch is located within the seat belt buckle assembly and provides an input to the inflatable restraint sensing and diagnostic module (SDM). The SDM supplies a low reference circuit and a seat belt switch signal circuit to determine a buckled or unbuckled condition.

Ignition voltage is between 9-16 volts.

B0072 01, B0073 01

The SDM detects the seat switch signal circuit is shorted to voltage for 500 milliseconds.

B0072 02, B0073 02

The SDM detects the seat switch signal circuit is shorted to ground for 500 milliseconds.

B0072 04, B0073 04

The SDM detects the seat switch signal circuit or low reference circuit is open for 500 milliseconds.

B0072 06, B0073 06

The SDM detects the seat switch signal circuit or low reference circuit is shorted to ground or is open for 500 milliseconds.

B0072 08, B0073 08

The SDM detects an invalid signal in the seat switch signal circuit.

The SDM commands the AIR BAG indicator ON.

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

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the appropriate scan tool Seat Belt Switch parameter while buckling and unbuckling the seat belt. The parameter should change between Buckled and Unbuckled.

IMPORTANTWhen removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the appropriate component/connector: The SDM The SDM wiring harness connector The seat belt buckle The seat belt buckle wiring harness connector
  1. Ignition OFF, disconnect the harness connector of the seat belt switch.
  2. Ignition OFF, test for less than 10 ohms between the low reference circuit terminal A and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the SDM.
  3. Ignition ON, verify the appropriate scan tool Seat Belt Switch parameter is Unbuckled. If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the SDM.
  4. Install a 3A fused jumper wire between the signal circuit terminal B and the low reference circuit terminal A. Verify the appropriate scan tool Seat Belt Switch parameter is Buckled. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the SDM.
  5. If all circuits test normal, test or replace the seat belt buckle assembly.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «Driver or Passenger Seat Belt Buckle Replacement»(/cadillac/cts/ii-2007-2014/remont/restraints-control-systems/#seat-belt-system)
  2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The passenger presence system (PPS) sensor continually monitors itself and if a fault in this circuit occurs, a DTC will set. When the sensing and diagnostic module (SDM) detects this DTC within the PPS, it will notify the customer of the enable/disable status by illuminating the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. Then the PPS will communicate to the SDM through serial data communications that a PPS fault is present. The SDM will then disable the deployment of the instrument panel module and then illuminate the AIR BAG warning indicator.

Ignition voltage is between 9-16 V.

  1. The SDM has received a fault message from the PPS module.
  2. The PPS detects a wet seat fault if DTC B0074 0F is set.
  1. The SDM disables the instrument panel module deployment loop.
  2. The SDM will illuminate the OFF portion of the PASSENGER AIR BAG ON/OFF indicator.
  3. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Note. The passenger presence system (PPS) is a calibrated unit. When replacing the assembly all parts in the service kit must remain together. Do not mix any of the old parts with the new parts. PPS comes in as part of a service kit which contains a seat foam, pressure sensor and a electronic control unit (ECU) module (if applicable). When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector: PPS module PPS sensor wiring harness

  1. Verify that no other PPS DTCs are set. If other PPS DTCs are set, investigate those DTCs first.
  2. Verify that DTC B0074 0F is not set. If the DTC is set, verify there are no electronic devices on the passenger seat. If not, then verify the seat is dry by removing the trim from the seat bottom frame. IF the seat is wet, allow 24-48 hours dry time. If the DTC is history, do not replace PPS. Clear PPS codes.
  3. Verify that DTC B0074 00, B0074 0D, or B0074 0E is not set. If any of the DTCs are set then replace the PPS module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for PPS module replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
LF Seat Position Sensor SignalB0079 02, B0079 06B0079 04, B0079 06B0079 01B0079 08
LF Seat Position Sensor Low ReferenceB0079 02, B0079 06B0079 04, B0079 06B0079 01B0079 08
RF Seat Position Sensor SignalB0080 02, B0080 06B0080 04, B0080 06B0080 01B0080 08
RF Seat Position Sensor Low ReferenceB0080 02, B0080 06B0080 04, B0080 06B0080 01B0080 08

The seat position sensor is used to determine the proximity of a front driver seat position with respect to the inflatable restraint I/P module. The seat position sensor is a hall effect sensor that is mounted on the seat track of the front driver seat. The seat position sensor is connected to the sensing and diagnostic module (SDM) with a low reference and a signal circuit. The SDM uses the state of the seat position sensor to determine the need for a stage 2 deployment of the inflatable restraint I/P module. When the seat is in the forward position stage 2 deployment is disabled, and when in the rearward position stage 2 deployment is enabled. The SDM monitors the LF seat position sensor signal circuit and if a fault is detected, the SDM will set DTC B0079 and defaults to disabling stage 2 inflatable restraint I/P module deployment.

Ignition voltage is between 9-16 volts.

B0079 01

The SDM detects the LF seat position sensor signal circuit is shorted to voltage for 500 milliseconds.

B0079 02

The SDM detects the LF seat position sensor signal circuit is shorted to ground for 500 milliseconds.

B0079 04

The SDM detects the LF seat position sensor signal circuit is open for 500 milliseconds.

B0079 06

The SDM detects the LF seat position sensor signal circuit is shorted to ground or an open for 500 milliseconds.

B0079 08

The SDM detects an invalid signal on the LF seat position sensor signal circuit.

  1. The SDM defaults the seat position sensor to seat forward threshold.
  2. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the SDM Driver Seat Position Sensor parameter while moving the driver seat fully forward and fully rearward. The parameter should cycle between Forward to Rearward as the seat is moved in the respective direction and DTC B0079 should not set.

  1. If the parameters are correct and DTC B0079 is set, replace the SDM.
IMPORTANTWhen removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector: Seat position sensor SDM Seat position sensor wiring harness connector SDM wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the LF seat position sensor.
  2. Test for less than 10 ohms between low reference circuit terminal 1 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the SDM.
  3. Ignition ON, test for 4.5-5.5 volts between the signal circuit terminal 2 and ground. If less that the specified range, test the signal circuit for an open/high resistance or a short to ground. If the circuit tests normal, replace the SDM. If greater that the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the SDM.
  4. If the circuits test normal, test or replace the seat position sensor.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for SDM replacement, setup, and programming

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
LF Seat Position Sensor SignalB0079 02, B0079 06B0079 04, B0079 06B0079 01B0079 08
LF Seat Position Sensor Low ReferenceB0079 02, B0079 06B0079 04, B0079 06B0079 01B0079 08
RF Seat Position Sensor SignalB0080 02, B0080 06B0080 04, B0080 06B0080 01B0080 08
RF Seat Position Sensor Low ReferenceB0080 02, B0080 06B0080 04, B0080 06B0080 01B0080 08

The seat position sensor is used to determine the proximity of a front passenger seat position with respect to the inflatable restraint I/P module. The seat position sensor is a hall effect sensor that is mounted on the seat track of the front passenger seat. The seat position sensor is connected to the sensing and diagnostic module (SDM) with a low reference and a signal circuit. The SDM uses the state of the seat position sensor to determine the need for a stage 2 deployment of the inflatable restraint I/P module. When the seat is in the forward position stage 2 deployment is disabled, and when in the rearward position stage 2 deployment is enabled. The SDM monitors the RF seat position sensor signal circuit and if a fault is detected, the SDM will set DTC B0080 and defaults to disabling stage 2 inflatable restraint I/P module deployment.

Ignition voltage is between 9-16 volts.

B0080 01

The SDM detects the RF seat position sensor signal circuit is shorted to voltage for 500 milliseconds.

B0080 02

The SDM detects the RF seat position sensor signal circuit is shorted to ground for 500 milliseconds.

B0080 04

The SDM detects the RF seat position sensor signal circuit is open for 500 milliseconds.

B0080 06

The SDM detects the RF seat position sensor signal circuit is shorted to ground or an open for 500 milliseconds.

B0080 08

The SDM detects an invalid signal on the RF seat position sensor signal circuit.

  1. The SDM defaults the seat position sensor to seat forward threshold.
  2. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, observe the SDM Psgr. Seat Position Sensor parameter while moving the passenger seat fully forward and fully rearward. The parameter should cycle between Forward to Rearward as the seat is moved in the respective direction and DTC B0080 should not set.

  1. If the parameters are correct and DTC B0080 is set, replace the SDM.
IMPORTANTWhen removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector: Seat position sensor SDM Seat position sensor wiring harness connector SDM wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the RF seat position sensor.
  2. Test for less than 10 ohms between low reference circuit terminal 1 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the SDM.
  3. Ignition ON, test for 4.5-5.5 volts between the signal circuit terminal 2 and ground. If less that the specified range, test the signal circuit for an open/high resistance or a short to ground. If the circuit tests normal, replace the SDM. If greater that the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the SDM.
  4. If the circuits test normal, test or replace the seat position sensor.

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for SDM replacement, setup, and programming

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the passenger presence system (PPS) and 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 PPS. The SDM will also request the instrument panel cluster to illuminate both of the PASSENGER AIR BAG ON/OFF indicators for 5 seconds. If the SDM detects that the PPS has set a current DTC, the SDM will then disable the instrument panel (I/P) module deployment loop, set DTC B0081, and illuminate the AIR BAG indicator.

Ignition voltage is between 9-16 V.

Any of the following conditions must exist for 5 seconds

B0081 0F

  1. The SDM has received a fault present message from the PPS.
  2. The PPS is in assembly plant mode and the SDM is in production mode.

B0081 11

The PPS is above maximum threshold. The PPS module failed the preload/build check.

B0081 3A

The SDM has received a mismatch message indicating the wrong PPS is installed on the vehicle.

B0081 4B

The PPS is not calibrated. Preload/build check test not run.

B0081 5A

The PPS detects a plausibility error.

B0081 71

The SDM has received invalid or no serial data from the PPS.

  1. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
  2. The I/P module deployment loop will be disabled.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Diagnostic Aids

If either the SDM or PPS were replaced, verify that the correct part numbers were used for the vehicle application.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

IMPORTANTWhen removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector: PPS module SDM PPS module harness connector SDM wiring harness connector
  1. Ignition ON, verify no PPS DTCs are set. If any PPS DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) .
  2. Verify that DTC B0081 3A is not set. If DTC B0081 3A is set, verify that the correct PPS is installed. If the incorrect PPS is installed, replace with the correct part number.
  3. Verify that DTC B0081 4B is not set. If DTC B0081 4B is set, refer to «Passenger Presence System Preload Test»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system__passenger-presence-system-preload-test) .
  4. Verify that DTC B0081 11 is not set. If DTC B0081 11 sets, perform the preload test. If the preload test fails, repeat the test.
  5. Verify that DTC B1325 is not set. If DTC B1325 is set, refer to «DTC B1325»(/cadillac/cts/ii-2007-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  6. Ignition OFF, disconnect the harness connector at the PPS module.
  7. Ignition OFF, test for less then 10 ohms between the ground circuit terminal D and ground. If greater then the specified range, test the ground circuit for an open/high resistance.
  8. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  9. Reconnect all PPS components and perform the «Passenger Presence System Preload Test»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system__passenger-presence-system-preload-test) .
  10. Clear all DTCs and operate the vehicle. DTC. DTC B0081 should not set. If DTC B0081 sets, replace the PPS.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for PPS and SDM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
Left Front Sensor SignalB0083 00B0083 00B0083 00B0083 0F
Left Front Sensor Low ReferenceB0083 00B0083 0F
Right Front Sensor SignalB0084 00B0084 00B0084 00B0084 0F
Right Front Sensor Low ReferenceB0084 00B0084 0F
Left Front Side Impact Sensor SignalB0085 00B0085 00B0085 00B0085 0F
Left Front Side Impact Sensor Low ReferenceB0085 00B0085 0F
Right Front Side Impact Sensor SignalB0086 00B0086 00B0086 00B0086 0F
Right Front Side Impact Sensor Low ReferenceB0086 00B0086 0F
Left Rear Side Impact Sensor SignalB0087 00B0087 00B0087 00B0087 0F
Left Rear Side Impact Sensor Low ReferenceB0087 00B0087 0F
Right Rear Side Impact Sensor SignalB0088 00B0088 00B0088 00B0088 0F
Right Rear Side Impact Sensor Low ReferenceB0088 00B0088 0F

The inflatable restraint discriminating sensors utilizes a bidirectional 2-wire circuit. The 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 each of the sensors. When the ignition is turned ON and input power from the SDM is first detected, each sensor responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The sensors continually communicates status messages to the SDM, which determines if a fault is present in the sensor or circuit. When a fault is detected, the SDM may reset the appropriate sensor up to 2 times 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 V.

All of the following conditions exist for 2.5 seconds

B0083 00, B0084 00, B0085 00, B0086 00, B0087 00, or B0088 00

  1. The sensor signal circuit is shorted to voltage, shorted to ground, or has an open/high resistance.
  2. The sensor low reference circuit is open.
  3. The front end sensor current has been above 23 mA for longer than 5 milliseconds.

B0083 0F, B0084 0F, B0085 0F, B0086 0F, B0087 0F, or B0088 0F

The SDM has received erratic messages from the sensor.

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

  1. The SDM has received a Not OK (NOK) message from the sensor.
  2. The SDM has not received a message.

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

  1. The SDM has received an ID message from the sensor which does not match the ID stored in the SDM memory.
  2. The SDM has reset the sensor twice without detecting the correct ID message.
  1. The SDM commands the AIR BAG indicator ON.
  2. The SIR system is disabled and no deployments are allowed.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Note. When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector: The impact sensor The SDM The impact sensor wiring harness connector The SDM wiring harness connector

  1. Ignition OFF, disconnect the harness connector at the appropriate impact sensor and the harness connector at the SDM.
  2. Test for infinite resistance between the signal circuit terminal B and ground. If less than the specified range, test the signal circuit for a short to ground.
  3. Ignition ON, test for less than 1 V between the signal circuit terminal B and ground. If greater than the specified range, test the circuit for a short to voltage.
  4. Test for less then 1 ohms between the appropriate low reference circuit terminal at the sensor and the appropriate low reference circuit terminal at the SDM: Left Front Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 24 X2 at the SDM. Right Front End Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 25 X2 at the SDM. Left Front Side Sensor - Low Reference circuit terminal 1 at the sensor and the low reference circuit terminal 19 X2 at the SDM. Right Front Side Sensor - Low Reference circuit terminal 1 at the sensor and the low reference circuit terminal 22 X2 at the SDM. Left Rear Side Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 28 X2 at the SDM. Right Rear Side Sensor - Low Reference circuit terminal 2 at the sensor and the low reference circuit terminal 29 X2 at the SDM. If greater than the specified range, test the circuit for an open/high resistance.
  5. Test for less then 1 ohms between the appropriate signal circuit terminal at the sensor and the appropriate signal circuit terminal at the SDM: Left Front Sensor - Signal circuit terminal 1 at the sensor and the signal circuit terminal 23 X2 at the SDM. Right Front End Sensor - Signal circuit terminal 1 at the sensor and the signal circuit terminal 26 X2 at the SDM. Left Side Sensor - Signal circuit terminal 2 at the sensor and the signal circuit terminal 20 X2 at the SDM. Right Side Sensor - Signal circuit terminal 2 at the sensor and the signal circuit terminal 21 X2 at the SDM. Left Rear Side Sensor - Signal circuit terminal 1 at the sensor and the signal circuit terminal 27 X2 at the SDM. Right Rear Side Sensor - Signal circuit terminal 1 at the sensor and the signal circuit terminal 30 X2 at the SDM. If greater than the specified range, test the circuit for an open/high resistance.
  6. If all circuits test normal, replace the impact sensor.
  7. Clear DTCs and operate the vehicle within the condition for running the DTC. Verify DTC B0083, B0084, B0085, B0086, B0087, or B0088 does not set. If any of the DTCs set, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Inflatable Restraint Front End Sensor Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  3. «Inflatable Restraint Side Impact Sensor Replacement - Front Side Door»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  4. «Inflatable Restraint Side Impact Sensor Replacement - Rear Side Door»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)
  5. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) stores a 4-digit primary key for the inflatable restraint passenger presence system (PPS). The SDM sends the PPS the primary key. If the PPS determines that it is the wrong primary key, the PPS will set DTC B1001 and send the SDM a vehicle mismatch message. The SDM then will set DTC B0081 and illuminate the SIR warning indicator. The PPS does not use a secondary key.

Ignition voltage is between 9-16 volts.

The 4-digit primary key stored in the SDM does not match the 4-digit key stored in the PPS.

  1. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
  2. The I/P module deployment is disabled.

The 4-digit Primary Key in the SDM and in the PPS match.

This DTC is an indication that the PPS was not set-up correctly, is not the correct part number or that the PPS is defective.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  5. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)

Scan Tool Reference

Control Module References for scan tool information

IMPORTANTWhen removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected. PPS PPS wiring harness
  1. Verify the correct PPS part number has been installed If the wrong PPS part number was installed, replace with the correct PPS.
  2. Verify that DTC B1001 is not set as current in the PPS. If DTC is set as current, perform the Setup New PPS procedure. Verify the SDM is sending the correct key. If DTC resets replace 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/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) stores a primary data key, which is a 4-digit number, and a secondary data key, which is a portion of the vehicle identification number (VIN). 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.

Ignition voltage is between 9-16 V.

  1. The 4-digit primary data key stored in the SDM does not match the 4 digits stored in the BCM.
  2. The VIN stored in the BCM is not in the acceptable range of VINs allowed by the SDM calibration.
  1. The SDM requests the instrument panel cluster (IPC) to illuminate the AIR BAG indicator.
  2. The SDM disables all deployments.
  1. The last 4-digit Primary Data Key in the SDM match the last 4 digits stored in the BCM.
  2. The VIN stored in the BCM is in the acceptable range of VINs allowed by the SDM calibration.

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

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

IMPORTANTWhen removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected. SDM SDM wiring harness
  1. Ignition ON, verify the scan tool Primary Key Status displays Valid. If not the specified value, verify the scan tool SDM Primary Key matches the Received Primary Key. If the key does not match, perform the Setup SDM Primary Key in BCM procedure.
  2. Ignition ON, verify the scan tool Secondary Key Status displays Valid. If not the specified value, verify the scan tool received VIN Digits 2-7 match the vehicle VIN.
  1. If the VIN does not match, reprogram the BCM and perform the Setup SDM Primary Key in BCM procedure.
  2. If the VIN matches, reprogram the SDM, ensure the correct SDM calibration is used and perform the Setup SDM Primary Key in BCM procedure.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

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

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__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 I/P inflator module. When the ignition is turned ON, the ignition voltage is supplied to the passenger air bag ON/OFF indicators and to the PPS module. The instrument panel cluster (IPC) grounds all indicator control circuits to the passenger air bag ON/OFF indicators for illumination.

The serial data messages sent from the supplemental inflatable restraints system to the radio, serving as a gateway, transmitting the information to the IPC to control the indicators as necessary.

After the SDM is programmed, the SDM setup procedure is required. During this set up procedure, the SDM will compare the content that was just programmed to the actual components that are installed on the vehicle. If the SDM detects that there are too few or too many components on the system, DTC B1019 00 will set and not allow the setup procedure to complete.

Ignition voltage is between 9-16 volts.

B1019 00

  1. The SDM was programmed with the wrong options for the vehicle.
  2. The wrong components were installed for the content of the vehicle.
  3. SDM connector may have bent pins or shorting bars causing the SDM to learn deployment loops that are not actually present.

B1019 3A

  1. The vehicle was configured for PPS but the SDM does not detect that the PPS indicator is present due to loss of power at indicator.
  2. The vehicle is not configured for PPS and the SDM detects that the PPS indicator is present.
  1. The SDM commands the AIR BAG indicator ON.
  2. The SDM disables all deployments when B1019 00 DTC is set as current.
  1. The correct SDM must be installed.
  2. The correct components must be installed.
  3. The PPS indicator operates as indicated in the «SIR System Description and Operation»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .

If the SDM has been replaced, make sure that the correct part number was installed for this vehicle. If after programming the SDM DTC B1019 00 sets as current, check for bent pins or shorting bars at the SDM connector.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

  1. With a scan tool, verify DTC B1370 is not set as current in the SDM. If DTC is current refer to «DTC B1370»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  2. If equipped with PPS, verify the appropriate PPS indicator segments illuminate by occupying and un-occupying the passenger seat. If the PPS indicator segments do not illuminate properly, replace the PPS indicator.
IMPORTANTWhen removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected. The PPS module SDM The PPS module wiring harness connector SDM wiring harness connector
  1. Ignition ON, verify the scan tool End Model Part Number is correct for the vehicle. If the part number is incorrect, reprogram the SDM.
  2. Observe the scan tool PPS Options parameter to determine how the vehicle PPS is currently configured in the SDM. Verify the actual vehicle equipment and the current configuration indicated by the scan tool parameter are the same. If the original configuration does not match the actual vehicle equipment, reprogram the SDM with the correct configuration.
  3. Ignition OFF, disconnect the harness connectors at the SDM and verify the connector is in good condition and has no bent pins, terminals or shorting bars If damage is found, repair the bent pins, terminals or shorting bars as needed and perform the Setup New SDM procedure.
  4. Connect the harness connector at the SDM.
  5. Ignition ON, verify the scan tool System Configuration matches the actual components installed on the vehicle. If the System Configuration does not match the actual components installed, reprogram the SDM with the correct components.
  6. Ignition ON, clear all PPS and SDM DTCs.
  7. Verify DTC B1019 does not set. If DTC sets, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Radio Control Assembly Replacement (with Navigation Display)»(/cadillac/cts/ii-2007-2014/remont/entertainment-systems/#cellular-system-entertainment-system-and-navigation-system) or «Radio Control Assembly Replacement (without Navigation Display)»(/cadillac/cts/ii-2007-2014/remont/entertainment-systems/#cellular-system-entertainment-system-and-navigation-system)
  3. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM or BCM replacement, setup, and programming
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using the diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The inflatable restraint sensing and diagnostic module (SDM) monitors the ignition 1 signal from the ignition switch. When the vehicle ignition switch is placed in the RUN or CRANK position, the switch supplies voltage to the SDM ignition 1 input terminal.

Ignition voltage is between 9-16 volts.

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

  1. The SDM commands the AIR BAG indicator ON.
  2. The SDM determines its power mode from the serial data message and discards the ignition 1 input for the remainder of the ignition cycle.
  1. The condition for setting the DTC no longer exists.
  2. A history DTC will clear once 100 malfunction-free ignition cycles have occurred.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  3. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
  4. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)

Scan Tool Reference

Control Module References for scan tool information.

IMPORTANTWhen removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected. SDM SDM wiring harness
  1. Ignition ON, verify DTC B1370 is not set in any other control modules. If the DTC is set in any other control module, refer to «DTC B1370-B1379, B1380-B1389, or B1440-B1443»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures) .
  2. Ignition OFF, disconnect the harness connector at the SDM.
  3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 32 and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open high resistance.
  4. If all circuits test normal, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM replacement, setup, and programming

Passenger Presence System Preload Test

The passenger presence detection system consists of an electronic control module, a conductive based sensor mat, wiring harness, and PASSENGER AIR BAG ON/OFF indicators. The sensor mat is made up of several flexible conductive metal strips placed underneath the seat cushion trim. These sensor strips transmit and receive a low level electric field. The weight of the occupant sitting in the front passenger seat is measured as a change in current flow within the sensor mat. If the passenger seat bottom cushion, seat bottom trim, or heater pad has been serviced, reinstalled, or removed for any reason, the procedure below will check for any preloads on the passenger presence detection system. A service replacement passenger presence detection system module does not require an unlock procedure prior to an initial preload test.

Note. Before the passenger presence detection system can be checked for preloads the front passenger seat must be completely empty of all items. The presence of any items on the front passenger seat will affect the calibration and operation of the passenger presence detection system. When the preload test is performed, the instrument cluster and dash lights will begin illuminating at varying intensity. This is normal operation during the preload test procedure and does not indicate additional system faults. The Diagnostic System Check - Vehicle must be performed after successfully completing the preload test procedure to ensure the system is functioning properly.

Passenger Presence System Preload System Test

  1. Empty the front outboard passenger seat (this system is susceptible to conductive material).
  2. With the scan tool, perform the Preload Passenger Presence Detection System procedure.
  3. Using the scan tool, check for DTC B0081 in history. If the test fails or DTC B0081 is current, confirm that there is no conductive material on the seat. If the test fails again, for heated seats, ensure that the sensor pad is on top of the heater element. Once the test successfully completes, cycle the ignition OFF.
  4. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) after successfully completing the preload test procedure to ensure the system is functioning properly.

Symptoms - SIR

IMPORTANTComplete the following steps before using the symptom tables
  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) , before using the symptom tables in order to verify that all of the following are true: There are no diagnostic trouble codes (DTCs) set. The inflatable restraint sensing and diagnostic module (SDM) can communicate via the serial data link.
  2. Review the SIR system description and operation in order to familiarize yourself with the system functions. Refer to «SIR System Description and Operation»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the SIR system. Refer to «Checking Aftermarket Accessories»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

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

Symptom List

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

  1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

When the ignition is turned ON, the instrument panel cluster (IPC) flashes the AIR BAG indicator 7 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.

Schematic Reference

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information.

  1. Cycle the key from OFF to ON, monitor the IPC. The SIR warning indicator should flash then turn OFF. If the SIR warning indicator continually flashes, reprogram the SDM.
  2. With a scan tool, perform the IPC display test to command the IPC indicators ON and OFF. The Air Bag indicator should cycle between the commanded states. If the Air Bag indicator does not cycle between the commanded states, replace the IPC.
  3. If all circuits test normal, replace the SDM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

  1. «SIR/SRS Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
  2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for IPC and SDM 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.

ConditionAction
If the vehicle was involved in an accident with an air bag deployment.Disconnect the negative battery cable(s) *. Refer to Repairs and Inspections Required After a Collision .
When performing SIR diagnostics.Follow the appropriate SIR service manual diagnostic procedure(s) *
When moving, removing or replacing an SIR component or a component attached to an SIR component. (Anytime you remove fasteners.)Disconnect the negative battery cable(s) *
If the vehicle is suspected of having shorted electrical wires.Disconnect the negative battery cable(s) *
When performing electrical diagnosis on components other than the SIR system.Remove the SIR/Airbag fuse(s) when indicated by the diagnostic procedure to disable the SIR system
* DTCs will be lost when the negative battery cable is disconnected.

SIR Service Precautions

WARNINGWhen performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Failure to observe the correct procedure could cause deployment of the SIR components. Serious injury can occur. Failure to observe the correct procedure could also result in unnecessary SIR system repairs.

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 (149°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 92 cm (3 feet) or greater

  1. Inflatable restraint sensing and diagnostic module (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 detection 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/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/cts/ii-2007-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-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/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) or «Electrical Center Identification Views»(/cadillac/cts/ii-2007-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-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/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .

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 (Sedan,Wagon)»(/cadillac/cts/ii-2007-2014/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 (Sedan,Wagon)»(/cadillac/cts/ii-2007-2014/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/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .
WARNINGWhen 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.

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

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

Scheme 5

Scheme 5: Inflatable Restraint Front End Sensor Replacement
Scheme 5: Inflatable Restraint Front End Sensor Replacement
CalloutComponent Name
WARNING: Refer to SIR Warning . Preliminary Procedures Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling . Remove the front compartment sight shield. Refer to Front Compartment Sight Shields Replacement
1Inflatable Restraint Front End Sensor Assembly CAUTION: Refer to Fastener Caution . Procedure Loosen the bolts and slide the sensor out of the keyhole slots. For the front end sensor, follow mandatory fastening sequence to eliminate the clockwise rotation of the electronic front sensors. Tip: The bolts are integral to the sensor assembly and DO NOT remove separately. Tighten: 11 N.m (97 lb in)
WARNING
Refer to SIR Warning .
CAUTION
Refer to Fastener Caution .

Scheme 6

Scheme 6: Inflatable Restraint Sensing and Diagnostic Module Replacement
Scheme 6: Inflatable Restraint Sensing and Diagnostic Module Replacement
CalloutComponent Name
WARNING: Do not strike or jolt the inflatable restraint sensing and diagnostic module (SDM). Before applying power to the SDM, make sure that it is securely fastened with the arrow facing toward the front of the vehicle. Failure to observe the correct installation procedure could cause SIR deployment, personal injury, or unnecessary SIR system repairs. WARNING: Refer to SIR Warning . Preliminary Procedures Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling . Remove the console. Refer to Front Floor Console Replacement (Left Hand Drive) or Front Floor Console Replacement (Right Hand Drive) . Disconnect the electrical connector.
1Inflatable Restraint Sensing and Diagnostic Module Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 7 N.m (56 lb in)
2Inflatable Restraint Sensing and Diagnostic Module Bolt Tighten: 7 N.m (56 lb in)
3Inflatable Restraint Sensing and Diagnostic Module Assembly Tip: When installing, ensure the arrow on the module is pointed towards the front of the vehicle. If installing a replacement module, program the module. Refer to Control Module References .
WARNING
Do not strike or jolt the inflatable restraint sensing and diagnostic module (SDM). Before applying power to the SDM, make sure that it is securely fastened with the arrow facing toward the front of the vehicle. Failure to observe the correct installation procedure could cause SIR deployment, personal injury, or unnecessary SIR system repairs.
WARNING
Refer to SIR Warning .
CAUTION
Refer to Fastener Caution .

Scheme 7

Scheme 7: Steering Wheel Inflatable Restraint Module Replacement
Scheme 7: Steering Wheel Inflatable Restraint Module Replacement
CalloutComponent Name
WARNING: Refer to SIR Inflator Module Handling and Storage Warning . WARNING: Refer to SIR Warning . Preliminary Procedures Disable the SIR system. Refer to SIR Disabling and Enabling . On the side of the steering wheel are 2 circular openings, place the wheel so that one opening is on top. Using a blunt-ended tool, push the spring fastener inward through the access hole. Repeat the step for the other opening.
1Steering Wheel Inflatable Restraint Module Procedure Release the connector position assurance (CPA) retainer. Disconnect the electrical connectors. 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 Inflatable Restraint Module Handling and Scrapping .
WARNING
Refer to SIR Warning .

Scheme 8

Scheme 8: Steering Wheel Inflatable Restraint Module Coil Replacement
Scheme 8: Steering Wheel Inflatable Restraint Module Coil Replacement
CalloutComponent Name
Preliminary Procedures Remove the steering wheel. Refer to Steering Wheel Replacement . Remove the steering column shroud. Refer to Steering Column Shroud Replacement (With Key Release Lever Knob) or Steering Column Shroud Replacement (Without Key Release Lever Knob) .
1Inflatable Restraint Steering Wheel Module Coil Bolt (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 3 N.m (27 lb in).
2Inflatable Restraint Steering Wheel Module Coil Procedure Disconnect any electrical connectors as needed. Transfer any parts as needed.
CAUTION
Refer to Fastener Caution .

Special Tools

J 42640 Steering Column Anti-rotation Pin

Centering

  1. Verify the following conditions before centering the inflatable restraint steering wheel module coil : The wheels on the vehicle are pointed straight ahead. The block tooth (1) of the steering shaft is in the 12 o'clock position. The ignition and start switch is in the LOCK position, or anti-rotation pin J 42640 is installed.
  2. If the front side (3) of the inflatable restraint steering wheel module coil does NOT have a centering window, and the back side (2) does NOT have a spring service lock (1), perform the following steps: Hold the coil with the face up. Rotate the coil hub clockwise until the coil ribbon stops. Rotate the coil hub, slowly, counter clockwise, for 2.5 revolutions. This is center position. While maintaining the coil hub in center position, align the centered coil with the horn tower and slide onto the steering shaft.

Scheme 9

Scheme 9: Instrument Panel Inflatable Restraint Module Replacement
Scheme 9: Instrument Panel Inflatable Restraint Module Replacement
CalloutComponent Name
WARNING: Refer to SIR Inflator Module Handling and Storage Warning . WARNING: Refer to SIR Warning . Preliminary Procedure Disable the SIR system. Refer to SIR Disabling and Enabling . Remove the instrument panel lower trim panel. Refer to Instrument Panel Lower Trim Panel Replacement (Left Hand Drive) or Instrument Panel Lower Trim Panel Replacement (Right Hand Drive) .
1Instrument Panel Inflatable Restraint Module Nut (Qty: 6) CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Instrument Panel Inflatable Restraint Module Assembly Procedure Ensure that the instrument panel inflatable restraint module is fully deployed before disposal. If the module was replaced under warranty, fully deploy and dispose of the module after the required retention period. Refer to Inflatable Restraint Module Handling and Scrapping . Enable the SIR system. Refer to SIR Disabling and Enabling .
WARNING
Refer to SIR Warning .
CAUTION
Refer to Fastener Caution .

Scheme 10

Scheme 10: Inflatable Restraint Passenger Presence System Replacement - Front
Scheme 10: Inflatable Restraint Passenger Presence System Replacement - Front
CalloutComponent Name
Preliminary Procedure Remove the front seat. Refer to Front Seat Replacement - Bucket (AQ9) or Front Seat Replacement - Bucket (W2E) . Remove the seat cushion cover. Refer to Front Seat Cushion Cover and Pad Replacement (W2E) or Front Seat Cushion Cover and Pad Replacement (AQ9) .
1Inflatable Restraint Front Passenger Presence System Assembly WARNING: Replace the passenger presence system as a complete assembly to prevent possible injury to the occupant. All the components in the service kit are assembled and calibrated as a unit. Using only some of the components in the service kit will cause the passenger presence system to operate improperly. WARNING: To avoid personal injury, perform a preload test on the passenger presence system whenever you remove or replace the seat cushion trim. Failure to do so may cause the system to malfunction. Procedures Preload Test the inflatable restraint passenger presence system whenever the seat cushion or any component of the passenger presence system is removed. Refer to Control Module References . Program the inflatable restraint passenger presence system after replacement. Refer to Control Module References . Tip: The passenger presence system is an integral part of the pad on the passenger seat cushion. The sensor, module and seat cushion pad must be replaced as a unit. Note the routing of the wiring harness and connector location for installation.
WARNING
Replace the passenger presence system as a complete assembly to prevent possible injury to the occupant. All the components in the service kit are assembled and calibrated as a unit. Using only some of the components in the service kit will cause the passenger presence system to operate improperly.
WARNING
To avoid personal injury, perform a preload test on the passenger presence system whenever you remove or replace the seat cushion trim. Failure to do so may cause the system to malfunction.

Scheme 11

Scheme 11: Driver or Passenger Seat Side Inflatable Restraint Module Replacement (CTS)
Scheme 11: Driver or Passenger Seat Side Inflatable Restraint Module Replacement (CTS)
CalloutComponent Name
WARNING: Following the deployment of a side impact air bag, inspect the following parts for damage. Replace these parts if necessary: The seat cushion frame The seat recliner, if equipped The seat adjuster The seat back frame Failure to do so may cause future personal injury. WARNING: Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs. Preliminary Procedure Disable the SIR system. Refer to SIR Disabling and Enabling . Remove the front seat back cushion finish panel. Refer to Driver or Passenger Seat Back Cushion Finish Panel Replacement (W2E) or Driver or Passenger Seat Back Cushion Finish Panel Replacement (AQ9) .
1Inflatable Restraint Front Seat Side Module Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Inflatable Restraint Front Seat Side Module Procedure Disconnect the electrical connector. Remove the pushpin fastener attaching the seat back cover to the seat back frame. 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 Inflatable Restraint Module Handling and Scrapping .
WARNING
Following the deployment of a side impact air bag, inspect the following parts for damage. Replace these parts if necessary: The seat cushion frame The seat recliner, if equipped The seat adjuster The seat back frame Failure to do so may cause future personal injury.
WARNING
Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs.
CAUTION
Refer to Fastener Caution .

Scheme 12

Scheme 12: Driver or Passenger Seat Side Inflatable Restraint Module Replacement (W2E)
Scheme 12: Driver or Passenger Seat Side Inflatable Restraint Module Replacement (W2E)
CalloutComponent Name
WARNING: Following the deployment of a side impact air bag, inspect the following parts for damage. Replace these parts if necessary: The seat cushion frame The seat recliner, if equipped The seat adjuster The seat back frame Failure to do so may cause future personal injury. WARNING: Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs. Preliminary Procedure Disable the SIR system. Refer to SIR Disabling and Enabling . Remove the front seat. Refer to Front Seat Replacement - Bucket (AQ9) or Front Seat Replacement - Bucket (W2E) . Remove the front seat back cushion finish panel. Refer to Driver or Passenger Seat Back Cushion Finish Panel Replacement (W2E) or Driver or Passenger Seat Back Cushion Finish Panel Replacement (AQ9) .
1Inflatable Restraint Front Seat Side Module Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Inflatable Restraint Front Seat Side Module Procedure Disconnect the electrical connector. 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 Inflatable Restraint Module Handling and Scrapping .
WARNING
Following the deployment of a side impact air bag, inspect the following parts for damage. Replace these parts if necessary: The seat cushion frame The seat recliner, if equipped The seat adjuster The seat back frame Failure to do so may cause future personal injury.
WARNING
Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs.
CAUTION
Refer to Fastener Caution .

Scheme 13

Scheme 13: Inflatable Restraint Side Impact Sensor Replacement - Front Side Door
Scheme 13: Inflatable Restraint Side Impact Sensor Replacement - Front Side Door
CalloutComponent Name
WARNING: 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. WARNING: Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs. Preliminary Procedures Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling . Remove the front side door trim panel. Refer to Front Side Door Trim Panel Replacement .
1Inflatable Restraint Side Impact Sensor Assembly CAUTION: Refer to Fastener Caution . Procedure Loosen the bolts and slide the sensor out of the keyhole slots. For the driver or passenger side sensor, follow mandatory fastening sequence to eliminate the clockwise rotation of the side impact sensors. Tip: The bolts are integral to the sensor assembly, DO NOT remove separately. Tighten: 9 N.m (80 lb in)
WARNING
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.
WARNING
Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs.
CAUTION
Refer to Fastener Caution .

Scheme 14

Scheme 14: Inflatable Restraint Side Impact Sensor Replacement - Rear Side Door
Scheme 14: Inflatable Restraint Side Impact Sensor Replacement - Rear Side Door
CalloutComponent Name
WARNING: 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. WARNING: Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs. Preliminary Procedures Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling . Remove rear side door trim panel. Refer to Rear Side Door Trim Panel Replacement . Remove rear side door water deflector.
1Inflatable Restraint Side Impact Sensor Module CAUTION: Refer to Fastener Caution . Procedure Loosen the bolts and slide the sensor out of the keyhole slots. For the driver side rear door sensor, follow mandatory fastening sequence to eliminate the clockwise rotation of the side impact sensors. Tip: The bolts are integral to the sensor assembly, DO NOT remove separately. Tighten: 9 N.m (80 lb in)
WARNING
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.
WARNING
Do not strike or jolt the inflatable restraint side impact sensor (SIS). Before applying power to the SIS make sure that it is securely fastened. Failure to observe the correct installation procedures could cause SIR deployment, personal injury, or unnecessary SIR system repairs.
CAUTION
Refer to Fastener Caution .

Scheme 15

Scheme 15: Roof Side Rail Inflatable Restraint Module Replacement
Scheme 15: Roof Side Rail Inflatable Restraint Module Replacement
CalloutComponent Name
WARNING: In order to prevent SIR deployment, personal injury, or unnecessary SIR system repairs, do not strike the door or the door pillar in the area of the side impact sensor (SIS). Turn OFF the ignition and remove the key when performing service in the area of the SIS. WARNING: When installing the roof rail airbag, do not twist or turn the airbag 360 degrees. Securing the roof rail airbag with an airbag twisted or turned 360 degrees may cause the airbag not to deploy correctly and could cause personal injury. WARNING: Refer to SIR Warning . WARNING: Refer to SIR Inflator Module Handling and Storage Warning . Preliminary Procedures Disable the SIR system. Refer to SIR Disabling and Enabling . Lower the side of the headliner. Refer to Headlining Trim Panel Replacement (Wagon) or Headlining Trim Panel Replacement (Sedan) .
1Roof Side Rail Inflatable Restraint Module Nut CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Rear Roof Side Rail Inflatable Restraint Module Assembly Procedure Disconnect the electrical connector. Loosen the roof side rail inflatable restraint module bolts. (Qty: 8) Remove the push in retainers (Qty: 7) securing the roof side rail inflatable restraint module to the vehicle. Remove the roof side rail inflatable restraint module from the vehicle. Tip: The bolts and the push in fasteners are an integral part of the module and should remain with the module. Tighten: 9 N.m (80 lb in)
WARNING
In order to prevent SIR deployment, personal injury, or unnecessary SIR system repairs, do not strike the door or the door pillar in the area of the side impact sensor (SIS). Turn OFF the ignition and remove the key when performing service in the area of the SIS.
WARNING
When installing the roof rail airbag, do not twist or turn the airbag 360 degrees. Securing the roof rail airbag with an airbag twisted or turned 360 degrees may cause the airbag not to deploy correctly and could cause personal injury.
WARNING
Refer to SIR Warning .
CAUTION
Refer to Fastener Caution .

Scheme 16

Scheme 16: Driver or Passenger Seat Belt Tensioner Replacement (W2E)
Scheme 16: Driver or Passenger Seat Belt Tensioner Replacement (W2E)
CalloutComponent Name
WARNING: Refer to SIR Warning . WARNING: In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state, or local laws. Preliminary Procedures Move the front seat to a full forward and full up position. Disable the SIR. Refer to SIR Disabling and Enabling . Remove the driver or passenger seat adjuster switch bezel. Refer to Driver or Passenger Seat Adjuster Switch Bezel Replacement (AQ9) or Driver or Passenger Seat Adjuster Switch Bezel Replacement (W2E) .
1Driver or Passenger Seat Belt Tensioner Cover
2Driver or Passenger Seat Belt Tensioner Fastener CAUTION: Refer to Fastener Caution . Tighten: 6 N.m (53 lb in)
3Driver or Passenger Seat Belt Tensioner Fastener Tighten: 45 N.m (33 lb ft)
4Driver or Passenger Seat Belt Tensioner Assembly Procedure Disconnect the electrical connector. Full deploy the module before disposal. If the module was replaced under warranty, full deploy and dispose of the module after the required retention period. Refer to Pretensioner Handling and Scrapping .
WARNING
Refer to SIR Warning .
WARNING
In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state, or local laws.
CAUTION
Refer to Fastener Caution .

Scheme 17

Scheme 17: Seat Belt Retractor Pretensioner Replacement - Front (W2E)
Scheme 17: Seat Belt Retractor Pretensioner Replacement - Front (W2E)
CalloutComponent Name
WARNING: Refer to SIR Warning . WARNING: In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state, or local laws. WARNING: Refer to SIR Inflator Module Handling and Storage Warning . Preliminary Procedures Move the front seat to a full forward and full up position. Disable the SIR. Refer to SIR Disabling and Enabling . Remove the upper and lower center pillar trim panel. Refer to Center Pillar Upper Trim Panel Replacement and Center Pillar Lower Trim Panel Replacement . Remove seat adjuster switch bezel. Refer to Driver or Passenger Seat Adjuster Switch Bezel Replacement (AQ9) or Driver or Passenger Seat Adjuster Switch Bezel Replacement (W2E) .
1Front Seat Belt Tensioner Cover Assembly
2Front Seat Belt Tensioner Fastener CAUTION: Refer to Fastener Caution . Tighten: 6 N.m (53 lb in)
3Seat Shoulder Belt Guide Fastener Tighten: 47 N.m (35 lb ft)
4Seat Shoulder Belt Retractor Fastener Tighten: 45 N.m (33 lb ft)
5Seat Belt Push On Retainer Procedure: Use a flat-bladed tool to remove locking pin in retainer.
6Seat Shoulder Belt Retractor Assembly Procedure Disconnect the electrical connector. Full deploy the module before disposal. If the module was replaced under warranty, full deploy and dispose of the module after the required retention period. Refer to Pretensioner Handling and Scrapping .
WARNING
Refer to SIR Warning .
WARNING
In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state, or local laws.
CAUTION
Refer to Fastener Caution .

Scheme 18

Scheme 18: Seat Belt Retractor Pretensioner Replacement - Front (AQ9)
Scheme 18: Seat Belt Retractor Pretensioner Replacement - Front (AQ9)
CalloutComponent Name
WARNING: Refer to SIR Warning . WARNING: In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state, or local laws. Preliminary Procedures Move the front seat to a full forward and full up position. Disable the SIR. Refer to SIR Disabling and Enabling . Remove the upper and lower center pillar trim panel. Refer to Center Pillar Upper Trim Panel Replacement and Center Pillar Lower Trim Panel Replacement .
1Seat Belt Retractor Anchor Plate Nut CAUTION: Refer to Fastener Caution . Tighten: 47 N.m (35 lb ft)
2Seat Shoulder Belt Guide Fastener Tighten: 47 N.m (35 lb ft)
3Seat Belt Push On Retainer Procedure: Use a flat-bladed tool to remove locking pin in retainer.
4Seat Shoulder Belt Retractor Fastener Tighten: 45 N.m (33 lb ft)
5Seat Shoulder Belt Retractor Assembly Procedure Disconnect the electrical connector. Full deploy the module before disposal. If the module was replaced under warranty, full deploy and dispose of the module after the required retention period. Refer to Pretensioner Handling and Scrapping .
WARNING
Refer to SIR Warning .
WARNING
In order to prevent accidental deployment and the risk of personal injury, do not dispose of an undeployed inflatable restraint seat belt pretensioner as normal shop waste. Undeployed seat belt pretensioners contain substances that could cause severe illness or personal injury if their sealed containers are damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed seat belt pretensioner. Failure to observe the following disposal methods may be a violation of federal, state, or local laws.
CAUTION
Refer to Fastener Caution .

Accident With or Without Air Bag Deployment - Component Inspections

WARNINGProper operation of the Supplemental Inflatable Restraint (SIR) sensing system requires that any repairs to the vehicle structure return the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment of the air bag(s) in a frontal collision or deployment of the air bag(s) for conditions less severe than intended.

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

  1. The steering column-Perform the steering column accident damage checking procedures. Refer to «Steering Column Accident Damage Inspection»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
  2. The instrument panel knee bolsters and mounting points-Inspect the knee bolsters for bending, twisting, buckling, or any other type of damage.
  3. The instrument panel brackets, braces, etc.-Inspect for bending, twisting, buckling, or any other type of damage.
  4. The seat belts-Perform the seat belt operational and functional checks. Refer to «Repairs and Inspections Required After a Collision»(/cadillac/cts/ii-2007-2014/remont/restraints-control-systems/#seat-belt-system__repairs-and-inspections-required-after-a) .
  5. The instrument panel cross car beam-Inspect for bending, twisting, buckling, or any other type of damage.
  6. The instrument panel mounting points and brackets-Inspect for bending, twisting, buckling, or any other type of damage.
  7. The seats and seat mounting points-Inspect for bending, twisting, buckling, or any other type of damage.
  8. The roof and headliner mounting points.

Accident With Frontal Air Bag Deployment - Component Replacement and Inspections

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

  1. Inflatable restraint passenger instrument panel air bag module
  2. Inflatable restraint steering wheel module
  3. Inflatable restraint sensing and diagnostic module (SDM), if SDM has the DTC B0052 56
  4. Inflatable restraint front end sensors
  5. Inflatable restraint left front/right front air bag module, if deployed
  6. Seat back cover on internal seat side air bag module, if deployed
  7. 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 passenger instrument panel module, steering wheel module, SDM, side air bag module (if deployed) and seat belt pretensioners-Inspect for any damage and repair or replace each component as needed.

Accident With Side Air Bag Module Deployment - Component Replacement and Inspections

After a collision involving left/right side air bag module deployment, replace the following components.

  1. Left/right inflatable restraint side impact sensors on the side of the impact.
  2. Left/right inflatable restraint roof rail module on the side of the impact.
  3. Inflatable restraint sensing and diagnostic module (SDM), if SDM has the DTC B0052 56.
  4. Inflatable restraint seat belt pretensioner.
  5. Driver or passenger seat back cushion cover replacement, if equipped left front/right front side air bag.
WARNINGDo not repair or replace the seat stitching or seams in the seat back trim cover with an internal mounted seat side airbag module. Replace the complete seat back trim cover from the OEM. Non-OEM seat stitching may cause improper airbag deployment which could result in personal injury.

Perform additional inspections on the following components.

  1. Mounting points or mounting hardware for the side impact sensors, and left front/right front side air bag modules on the side of impact-Inspect for any damage and repair or replace each component as needed.
  2. Mounting points, mounting hardware, headliner and trim pieces for the left/right roof rail air bag module on the side of impact-Inspect for any damage and repair or replace each component as needed.
  3. Mounting points or mounting hardware for the SDM and seat belt pretensioners-Inspect for any damage and repair or replace each component as needed.
  4. The seat cushion frame
  5. The seat recliner and cover, if equipped
  6. The seat adjuster
  7. The seat back frame
  8. Door trim assembly
  9. Impacted seat cushion side covers and switches

Inflatable Restraint Impact Sensor Replacement Guidelines

The inflatable restraint impact sensor replacement policy requires replacing sensors in the area of the 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 object. If the vehicle has an inflatable restraint impact sensor mounted forward of the radiator, it must be replaced.

  1. Replace the inflatable restraint impact sensor whether or not the air bags have deployed.
  2. Replace the inflatable restraint impact 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 inflatable restraint impact sensing system. Do not try to determine whether the sensor is undamaged, replace the inflatable restraint impact sensor. Also, if you follow a Diagnostic Trouble Code (DTC) procedure and a malfunctioning sensor is indicated, replace the inflatable restraint impact sensor.

Live (Undeployed) Inflator Module

Scheme 19

Scheme 19
Scheme 19

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

Dual Stage Inflator Module

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

Scrapping Procedure

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

Do not deploy the inflator module in the following situations

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

Deployment Procedures

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

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

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

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

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

Special Tools

  1. J 38826 SIR Deployment Harness. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  2. J 39401-B SIR Deployment Fixture. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  3. J 38826-25 Roof rail module adapter
  4. J 38826-50 Side impact module adapter
  5. J 38826-75 Steering wheel module adapter (dual stage air bags)
  6. J 38826-80 I/P module adapter (dual stage air bags)
  1. Turn OFF the ignition.
  2. Remove the ignition key.
  3. Put on safety glasses.
  4. Remove the inflator module. Refer to the following: If you are removing the steering wheel module, refer to «Steering Wheel Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing the instrument panel (I/P) module, refer to «Instrument Panel Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a side impact module, refer to «Driver or Passenger Seat Side Inflatable Restraint Module Replacement (CTS)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) or «Driver or Passenger Seat Side Inflatable Restraint Module Replacement (W2E)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . If you are removing a roof rail module, refer to «Roof Side Rail Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  5. Place the inflator module with the vinyl trim cover facing up and away from the surface on a work bench.
  6. Clear a space on the ground about 1.85 m (6 ft) in diameter for deployment of the inflator module or deployment fixture. If possible, use a paved, outdoor location free of activity. Otherwise, use a space free of activity on the shop floor. Make sure you have sufficient ventilation.
  7. Make sure no loose or flammable objects are in the area.
  8. If you have a steering wheel inflator module, place the inflator module in the center of the space.
  9. If you have an I/P inflator module, refer to the following instructions: Place the J 39401-B (2) in the center of the cleared area. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . Fill the deployment fixture with water or sand. Using the proper nuts and bolts, mount the I/P module (1) to the deployment fixture (2), with the vinyl trim facing up. Securely tighten all fasteners that hold the I/P module (1) to the deployment fixture (2).
  10. If you have a side impact module, refer to the following instructions: Place the J 39401-B (3) in the center of the cleared area. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . Fill the deployment fixture with water or sand. Using the proper nuts and mount the side impact module (1) to the deployment fixture (3), with the vinyl trim facing up. Adjust and secure the fixture arms (4) to the deployment fixture (3). Securely tighten all fasteners that hold the side impact module (1) to the deployment fixture (3).
  11. If you have a roof rail module, refer to the following instructions: Place the J 39401-B (3) in the center of the cleared area. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . Fill the deployment fixture with water or sand. Using the proper nuts (2) and mount the roof rail module (1) to the deployment fixture (3), with the vinyl face up. Adjust and secure the fixture arms (4) to the deployment fixture (3). Securely tighten all fasteners that hold the roof rail module (1) to the deployment fixture (3).
  12. Inspect the J 38826 and the appropriate pigtail adapter for damage. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . Replace as needed.
  13. Short the 2 SIR deployment harness leads (1) together using one banana plug seated into the other.
  14. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
  15. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
  16. Connect the inflator module to the adapter (2) on the SIR deployment harness (1).
  17. Place a 12V minimum/2A minimum power source (i.e., vehicle battery) near the shorted end of the harness.
  18. Clear the area of people.
  19. Separate the 2 banana plugs on the SIR deployment harness.
  20. Connect the SIR deployment harness wires to the power source. Inflator module deployment will occur when contact is made.
  21. Disconnect the SIR deployment harness from the power source after the inflator module deploys.
  22. If the inflator module did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
  23. Seat one banana plug into the other in order to short the deployment harness leads.
  24. Put on a pair of shop gloves.
  25. Disconnect the pigtail adapter from the inflator module as soon as possible.
  26. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
  27. Dispose of the deployed inflator module through normal refuse channels.
  28. Wash hands with a mild soap.

Deployment Inside Vehicle (Vehicle Scrapping Procedure)

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

  1. The vehicle has completed its useful life.
  2. Irreparable damage occurs to the vehicle in a non-deployment type accident.
  3. Irreparable damage occurs to the vehicle during a theft.
  4. The vehicle is being salvaged for parts to be used on a vehicle with a different VIN as opposed to rebuilding as the same VIN.
  1. Turn the ignition switch to the OFF position.
  2. Remove the ignition key.
  3. Put on safety glasses.
  4. Remove all loose objects from the front seats.
  5. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
  6. Disconnect the steering wheel module yellow connector (1) from vehicle harness yellow connector (3).
  7. Cut the yellow harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
  8. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
  9. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. Use these wires to fabricate the driver deployment harness.
  10. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
  11. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the inflator module.
  12. Twist together 2 connector wire leads (the high circuits from both stages of the steering wheel module) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  13. Inspect that the 3-wire connection is secure.
  14. Bend flat the twisted connection.
  15. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  16. Twist together 2 connector wire leads (the low circuits from both stages of the steering wheel module) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  17. Inspect that the 3-wire connection is secure.
  18. Bend flat the twisted connection.
  19. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  20. Connect the deployment harness to the steering wheel module in-line connector.
  21. Route the deployment harness out of the driver side of the vehicle.
  22. Disconnect the driver side air bag/pretensioner yellow connector (1) from the vehicle wiring harness located under the front of driver seat.
  23. Cut the 4 SIR wires (2 for side air bag and 2 for pretensioner) leading to the yellow harness connector from the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
  24. Strip 13 mm (0.5 in) of insulation from all 4 SIR wires connector leads (2 for side air bag and 2 for pretensioner).
  25. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. Use these wires to fabricate the deployment harness.
  26. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
  27. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the side air bag module and pretensioner.
  28. Twist together 2 connector wire leads (the high circuits from side air bag and pretensioner ) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  29. Inspect that the 3-wire connection is secure.
  30. Bend flat the twisted connection.
  31. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  32. Twist together 2 connector wire leads (the low circuits from side air bag and pretensioner ) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  33. Inspect that the 3-wire connection is secure.
  34. Bend flat the twisted connection.
  35. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  36. Connect the deployment harness to the driver side air bag/pretensioner yellow connector.
  37. Route the deployment harness out of the driver side of the vehicle.
  38. Disconnect the left/driver roof rail yellow harness connector (2) from the left roof rail air bag (1).
  39. Cut the harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
  40. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
  41. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. These wires will be used to fabricate the roof rail air bag deployment harness.
  42. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
  43. Twist together one end from each of the wires in order to short the wires.
  44. Twist together one connector wire lead to one deployment wire.
  45. Bend flat the twisted connection.
  46. Secure and insulate the connection using electrical tape.
  47. Twist together, bend, and tape the remaining connector wire lead to the remaining deployment wire.
  48. Connect the deployment harness to the roof rail module yellow connector.
  49. Route the deployment harness out of the driver side of the vehicle.
  50. Disconnect the I/P module yellow harness connector (1) from the vehicle harness connector (2).
  51. Cut the yellow harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
  52. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
  53. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. These wires will be used to fabricate the passenger deployment harness.
  54. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
  55. Twist together one end from each of the wires in order to short the wires.
  56. Twist together 2 connector wire leads (the high circuits from both stages of the steering wheel module) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  57. Inspect that the 3-wire connection is secure.
  58. Bend flat the twisted connection.
  59. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  60. Twist together 2 connector wire leads (the low circuits from both stages of the I/P module) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  61. Inspect that the 3-wire connection is secure.
  62. Bend flat the twisted connection.
  63. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  64. Connect the deployment harness to the I/P module in-line connector.
  65. Route the deployment harness out of the passenger side of the vehicle.
  66. Disconnect the passenger side air bag/pretensioner yellow connector (1) from the vehicle wiring harness located under the front of driver seat.
  67. Cut the 4 SIR wires (2 for side air bag and 2 for pretensioner) leading to the yellow harness connector from the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
  68. Strip 13 mm (0.5 in) of insulation from all 4 SIR wires connector leads (2 for side air bag and 2 for pretensioner).
  69. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. Use these wires to fabricate the deployment harness.
  70. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
  71. Twist together one end from each of the wires in order to short the wires. Deployment wires shall remain shorted, and not connected to a power source until you are ready to deploy the side air bag module and pretensioner.
  72. Twist together 2 connector wire leads (the high circuits from side air bag and pretensioner) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  73. Inspect that the 3-wire connection is secure.
  74. Bend flat the twisted connection.
  75. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  76. Twist together 2 connector wire leads (the low circuits from side air bag and pretensioner) to one sets of deployment wires. Refer to «Component Connector End Views»(/cadillac/cts/ii-2007-2014/remont/body-electrical/#wiring-systems-and-power-management-component-connector-end-views-index) in order to determine the correct circuits.
  77. Inspect that the 3-wire connection is secure.
  78. Bend flat the twisted connection.
  79. Secure and insulate the 3-wire connection to deployment harness using electrical tape.
  80. Connect the deployment harness to the passenger side air bag/pretensioner yellow connector.
  81. Route the deployment harness out of the passenger side of the vehicle.
  82. Disconnect the right/passenger roof rail air bag yellow harness connector (2) from the right roof rail air bag (1).
  83. Cut the harness connector out of the vehicle, leaving at least 16 cm (6 in) of wire at the connector.
  84. Strip 13 mm (0.5 in) of insulation from each of the connector wire leads.
  85. Cut two 6.1 m (20 ft) deployment wires from a 0.8 mm (18 gauge) or thicker multi-strand wire. These wires will be used to fabricate the roof rail air bag deployment harness.
  86. Strip 13 mm (0.5 in) of insulation from both ends of the wires cut in the previous step.
  87. Twist together one end from each of the wires in order to short the wires.
  88. Twist together one connector wire lead to one deployment wire.
  89. Bend flat the twisted connection.
  90. Secure and insulate the connection using electrical tape.
  91. Twist together, bend, and tape the remaining connector wire lead to the remaining deployment wire.
  92. Connect the deployment harness to the roof rail module yellow connector.
  93. Route the deployment harness out of the passenger side of the vehicle.
  94. Completely cover the windshield and front door window openings with a drop cloth.
  95. Stretch out all of the deployment harness wires on the right side of the vehicle to their full length.
  96. Deploy each deployment loop one at a time.
  97. Place a power source, 12V minimum/2A minimum (i.e., a vehicle battery) near the shorted end of the harnesses.
  98. Separate the one set of wires and touch the wires ends to the power source in order to deploy the inflator modules, doing one module at a time.
  99. Disconnect the deployment harness from the power source and twist the wire ends together.
  100. Continue the same process with the remaining deployment harnesses that are available.
  101. Stretch out all of the deployment harness wires on the left side of the vehicle to their full length.
  102. Deploy each deployment loop one at a time.
  103. Place a power source, 12V minimum/2A minimum (i.e., a vehicle battery) near the shorted end of the harnesses.
  104. Separate the one set of wires and touch the wires ends to the power source in order to deploy the inflator modules, doing one module at a time.
  105. Disconnect the deployment harness from the power source and twist the wire ends together.
  106. Continue the same process with the remaining deployment harnesses that are available.
  107. Remove the drop cloth from the vehicle.
  108. Disconnect all harnesses from the vehicle.
  109. Discard the harnesses.
  110. Scrap the vehicle in the same manner as a non-SIR equipped vehicle.
  111. If one or all of the inflator modules did not deploy, perform the following steps to remove the undeployed module(s) from the vehicle: «Steering Wheel Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) «Instrument Panel Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) «Driver or Passenger Seat Side Inflatable Restraint Module Replacement (CTS)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) or «Driver or Passenger Seat Side Inflatable Restraint Module Replacement (W2E)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) «Roof Side Rail Inflatable Restraint Module Replacement»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system)

Scheme 20

Scheme 20: Pretensioner Handling and Scrapping
Scheme 20: Pretensioner Handling and Scrapping
WARNINGWhen you are carrying an undeployed seat belt pretensioner: Do not carry the seat belt pretensioner by the wires or connector on the pretensioner. Do not touch the seat belt pretensioner in the area of the cable. Do not cover the tube opening with your hand. Keep the open end of the tube pointed away from you. Do not point the open end of the tube at another person. When the pretensioner deploys the cable retracts. This shortens the pretensioner between the buckle and the mounting bolt. Grasp the pretensioner by the piston tube. Disregarding these precautions may result in personal injury or unnecessary SIR system repairs.

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 Inflatable Restraint 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.

WARNINGIn order to prevent accidental deployment of the pretensioner which could cause personal injury, do not dispose of an undeployed pretensioner as normal shop waste. The undeployed pretensioner contains substances that could cause severe illness or personal injury if the sealed container is damaged during disposal. Use the following deployment procedures to safely dispose of an undeployed pretensioner. Failure to dispose of a pretensioner as instructed may be a violation of federal, state, or local laws.

Special Tools

  1. J 39401-B SIR Deployment Fixture. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  2. J 38826 SIR Deployment Harness. See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  3. J 38826-25 for seat belt pretensioner module adapter
WARNINGWhen you are deploying a pretensioner for disposal, perform the deployment procedures in the order listed. Failure to follow the procedures in the order listed may result in personal injury.
  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 Retractor Pretensioner Replacement - Front (W2E)»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) or «Seat Belt Retractor Pretensioner Replacement - Front (AQ9)»(/cadillac/cts/ii-2007-2014/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/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) .
  9. Fill the fixture plastic reservoir with water or sand.
  10. Mount the module (1) in the SIR deployment fixture (3) with the open end facing up using the following mounting method. Adjust and secure the J 39401-B arms (4) to the deployment fixture (3). See «Special Tools»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . 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/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system) . Replace as needed.
  12. Short the 2 SIR deployment harness (1) leads together using one banana plug seated into the other.
  13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness (1).
  14. Extend the SIR deployment harness and adapter to full length from the deployment fixture.
  15. Connect the pretensioner (1) to the adapter (2) on the deployment harness (3).
  16. Clear the area of people.
  17. Separate the 2 banana plugs on the SIR deployment harness.
  18. Place a 12 V minimum/2 A minimum power source (i.e., vehicle battery) near the shorted end of the harness.
  19. Connect the SIR deployment harness wires to the power source. Pretensioner deployment will occur when contact is made.
  20. Disconnect the SIR deployment harness from the power source after the pretensioner deploys.
  21. Seat one banana plug into the other in order to short the deployment harness leads.
  22. If the pretensioner did not deploy, disconnect the adapter and discontinue the procedure. Contact the Technical Assistance Group. Otherwise, proceed to the following steps.
  23. Put on a pair of shop gloves.
  24. Disconnect the pigtail adapter from the pretensioner as soon as possible.
  25. Inspect the pigtail adapter and the SIR deployment harness. Replace as needed.
  26. Dispose of the deployed pretensioner through normal refuse channels.
  27. Wash hands with a mild soap.

Scheme 21

Scheme 21: SIR System Overview
Scheme 21: SIR System Overview

The Supplemental Inflatable Restraint (SIR) System supplements the protection offered by the occupants Seat Belt System (2). The SIR system may contain several inflator modules located throughout the vehicle, i.e. steering wheel module (1) and instrument panel (I/P) module (1). In addition to inflator modules, the vehicle contains an inflatable restraint Passenger Presence System (PPS) that measures the weight of an occupant sitting in the front passenger seat. The PPS uses the weight of the occupant to determine if the I/P inflator module will be enabled or disabled. 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 requesting the instrument panel cluster (IPC) to turn 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.

Frontal SIR System Description

The frontal Supplemental Inflatable Restraint (SIR) System consists of the following components

  1. AIR BAG indicator located on the instrument panel cluster (IPC)
  2. Driver and passenger knee bolsters
  3. Inflatable restraint front end sensors (left/right)
  4. Inflatable restraint PASSENGER AIR BAG ON/OFF indicator
  5. Inflatable restraint passenger presence system (PPS)
  6. Inflatable restraint seat position sensor (left/right)
  7. Inflatable restraint sensing and diagnostic module (SDM)
  8. Inflatable restraint steering wheel module
  9. Inflatable restraint steering wheel module coil
  10. Inflatable restraint wiring harnesses
  11. Seat belt pretensioners (left/right)
  12. 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 diagnostic trouble code (DTC) and requests the IPC to turn the AIR BAG indicator ON. The SDM, instrument panel (I/P) module, steering wheel module, steering wheel module coil and the connecting wires makeup the frontal deployment loops. The SDM continuously monitors the deployment loops for malfunctions and requests the IPC to turn the AIR BAG indicator ON if a fault is detected.

Side SIR System Description (Front)

The side Supplemental Inflatable Restraint (SIR) System (front) consists of the following components

  1. Inflatable restraint steering wheel module coil
  2. AIR BAG indicator located in the instrument panel cluster (IPC)
  3. Inflatable restraint side impact sensors (left/right)
  4. Inflatable restraint side impact modules, front (left/right)
  5. Inflatable restraint roof rail modules (left/right)
  6. Inflatable restraint sensing and diagnostic module (SDM)
  7. Inflatable restraint side impact sensors (left/right)
  8. Inflatable restraint wiring harnesses
  9. Inflatable restraint seat belt pretensioners (left/right)
  10. Inflatable restraint seat position sensors (left/right)

The roof rail modules (front/rear) are located in the headliner along the roof rails. The roof rail modules contain a housing, inflatable air bag, initiating device, and a canister of gas generating material. The initiator is part of the roof rail module deployment loop. When a side impact of sufficient force occurs the SIS detects the impact and sends a signal to the SDM. The SDM compares the signal received from the SIS to a value stored in memory. When the generated signal exceeds the stored value, the SDM will cause current to flow through the side deployment loop deploying the roof rail air bag. The SDM, roof rail modules (front) and the connecting wires makeup the side deployment loops. The SDM continuously monitors the deployment loops for malfunctions and turns the AIR BAG indicator ON if a fault is present. Each roof rail module is equipped with a shorting bar located on the connector of the module. The shorting bar shorts the roof rail module deployment loop circuitry to prevent unwanted deployment of the air bag when servicing the inflator module.

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. The SDM contains internal sensors along with several external sensors, if equipped, mounted at various locations on the vehicle. In the event of a collision, the SDM performs calculations using the signals received from the internal and external sensors. The SDM compares the results of the calculations to values stored in memory. When these calculations exceed the stored value, the SDM will cause current to flow through the appropriate deployment loops to deploy the air bags. The SDM records the SIR System status when a deployment occurs and requests the instrument panel cluster (IPC) to turn the AIR BAG indicator ON. The SDM performs continuous diagnostic monitoring of the SIR System electrical components and circuitry when the ignition is turned ON. If the SDM detects a malfunction, a DTC will be stored and the SDM will request the IPC to turn the AIR BAG indicator ON. In the event that battery voltage is lost during a collision, the SDM maintains a 23-volt loop reserve for deployment of the air bags. It is important to note, when disabling the SIR System for servicing or rescue operations to allow the 23-volt loop to dissipate, which could take up to 1 minute.

Inflatable Restraint Passenger Presence System

Note. The passenger presence system (PPS) is a calibrated unit. When replacing the assembly all parts in the service kit must remain together. Do not mix any of the old parts with the new parts. After repairing or replacing the PPS, the system must be rezeroed in order to function properly.

The PPS is used to monitor the type of occupant that is sitting in the front outboard passenger seat and communicate the status to the sensing and diagnostic module (SDM). The SDM then uses this information to determine whether to enable or suppress the deployment of the instrument panel (I/P) inflator module. The PPS consists of an electronic control module, a conductive based sensor mat, a harness, and PASSENGER AIR BAG ON/OFF indicators. The sensor mat is made up of a flexible conductive mat placed underneath the seat cushion trim. The PPS transmits and receives a low-level electric field. The measured capacitance value of this field is used to determine the type of occupant sitting in the front passenger seat. If the measured capacitance is less than a calibrated value, then the PPS module will send a Serial data signal to the SDM to disable the passenger airbag module. If the measured capacitance is greater than a calibrated value, then the PPS module will send a Serial data signal to the SDM to enable the passenger airbag module. The SDM will notify the customer of the enable/disable status by illuminating the PASSENGER AIR BAG ON/OFF indicator. The PPS monitors itself for faults and will display flash diagnostic trouble codes (DTCs) to the scan tool. When a fault is detected, the PPS module sends out a message to the SDM. The SDM responds by sending a command message to the IPC to illuminate the PASSENGER AIRBAG ON/OFF indicator.

Inflatable Restraint Seat Position Sensors

The seat position sensor is used to determine the proximity of a front driver position with respect to the frontal air bag. The seat position sensor interfaces with the sensing and diagnostic module (SDM). The state of the seat position sensor 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 seat position sensor is a Hall effect sensor that is mounted on the outboard seat track of the driver seat. The seat track includes a metal bracket that shunts the seat position sensor magnetic circuit creating two states of seat position. The shunted state represents a rearward seat position. The non-shunted state represents a forward position. The seat position sensor 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 seat position sensor 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 seat position sensor circuit and if a fault is detected the SDM will set code B0079 and defaults to disabling stage 2 frontal deployment.

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 battery voltage and requests the IPC to illuminate the AIR BAG indicator. 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 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 diagnostic trouble code (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.

Inflatable Restraint PASSENGER AIR BAG ON/OFF Indicator

The PASSENGER AIR BAG ON/OFF indicator located in the I/P center stack is used to notify the driver when the Passenger Presence System (PPS) has enabled or disabled the instrument panel (I/P) inflator module. The PPS air bag indicators will also inform the driver of any PPS malfunctions. When the ignition is turned on, the SDM is supplied with battery voltage and commands both PASSENGER AIR BAG ON/OFF indicators ON. The PPS module conducts tests on the PPS components and circuits while both ON/OFF indicators are ON. If no malfunctions are detected the PPS module will illuminate 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 diagnostic trouble code (DTC), default the PPS to the OFF state and communicate with the sensing and diagnostic module (SDM) that a DTC has been set. When the SDM detects that the PPS has set a DTC, the SDM will set either DTC B0056 or B0081 and request the instrument panel cluster (IPC) to illuminate the AIR BAG indicator located on the IPC ON. This is done to notify the driver of any PPS malfunctions. The presence of a Supplemental Inflatable Restraint (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 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 front end sensors are equipped on vehicles to supplement the Supplemental 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.

Inflatable Restraint Side Impact Sensor

The side impact sensor contains a sensing device which monitors vehicle acceleration and velocity changes to detect side collisions that are sever enough to warrant side SIR deployment. The side impact sensor is not part of the deployment loop, but instead provides an input to the SDM. The SDM contains a microprocessor that performs calculations using the measured accelerations and compares these calculations to a value stored in memory.

Inflatable Restraint Wiring Harnesses

The wiring harnesses connect the sensing and diagnostic module (SDM), inflator modules, Passenger Presence System (PPS), front end sensors, seat position sensors, passenger seat belt tension retractor sensor, rollover sensor, side impact sensors and the serial data circuit together using connectors. SIR deployment loop connectors are yellow in color for easy identification. When repairing Supplemental Inflatable Restraint (SIR) System wiring harnesses, follow the proper testing and wiring repair procedures outlined in this manual.

Seat Belt Pretensioner

The seat belt pretensioner consist of a housing, the seat belt buckle, an initiator, and a canister of gas generating materials. The initiator is part of the seat belt pretensioner deployment loop. When the vehicle is involved in a collision of sufficient force, the sensing and diagnostic module (SDM) causes current to flow through the seat belt deployment loops to the initiator. Current passing through the initiator ignites the material in the canister producing a rapid generation of gas. The gas produced from this reaction deploys the seat belt pretensioner and retracts the seat belt buckle, which removes all of the slack in the seat belts. Depending on the severity of the collision, the seat belt pretensioner may deploy without the frontal inflator modules deploying, or they will deploy immediately before the frontal inflator modules deploy. Each seat belt pretensioner is equipped with a shorting bar that is located in the connector of the seat belt pretensioner. The shorting bar shorts the seat belt pretensioner circuitry to prevent unwanted deployment of the seat belt pretensioner when the connector is disconnected.

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.

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.

Illustration Tool Number/Description J 38715-A Driver/Passenger SIR Load Tool J 38826 SIR Deployment Harness J 39401-B SIR Deployment Fixture J 42640 Steering Column Anti-rotation Pin J 44298 Driver Air Bag Removal Tool

Scheme 22

Scheme 22: Special Tools
Scheme 22: Special Tools

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Connector Repairs
• Control Module References
• Diagnostic Repair Verification
• SIR/SRS Wiring Repairs
• Diagnostic Trouble Code (DTC) List - Vehicle
• Seat Belt Schematics
• DTC B1325
• Radio Control Assembly Replacement (with Navigation Display)
• Checking Aftermarket Accessories
• Electrical Center Identification Views
• SIR Warning
• Front Compartment Sight Shields Replacement
• Fastener Caution
• Front Floor Console Replacement (Left Hand Drive)
• SIR Inflator Module Handling and Storage Warning
• Steering Wheel Replacement
• Front Seat Replacement - Bucket (AQ9)
• Front Side Door Trim Panel Replacement
• Headlining Trim Panel Replacement (Wagon)
• Repairs and Inspections Required After a Collision
• SIR Inflator Module Disposal Warning
• SIR Deployed Inflator Modules Are Hot Warning
• SIR Inflatable Module Deployment Outside Vehicle Warning
• SIR Disabling and Enabling
• DTC B0012 or B0013
• Passenger Presence System Preload Test
• SIR Identification Views