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Author Topic: SIR Warnings & Service Procedures (Used for reference)  (Read 43081 times)

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SIR Warnings & Service Procedures (Used for reference)
« on: April 16, 2005, 14:33:22 PM »

NOTE! The documentation and images in this Technical library is intended for educational use only and is intended only for CAFCNA members. It is NOT for commercial use whatsoever!

  Service to components and/or systems, especially safety related such as, but not limited to the following posts in this topic, should be by trained personnel only.


SIR Caution

Caution: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

SIR Disabling and Enabling Zones

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

(Click on the image to expand it.)


 Zone                    Description

Zone 1: Inflatable Restraint Front End Sensors. Refer to SIR Disabling and Enabling: Zone 1.

Zone 2: Inflatable Restraint Side Impact Sensor (SIS). Refer to SIR Disabling and Enabling: Zone 2.

Zone 3: Inflatable Restraint Steering Wheel Module and Coil. Refer to SIR Disabling and Enabling: Zone 3.

Zone 4: Not Used

Zone 5: Inflatable Restraint Instrument Panel (IP) Module. Refer to SIR Disabling and Enabling: Zone 5.

Zone 6: Inflatable Restraint Side Impact Sensor (SIS). Refer to SIR Disabling and Enabling: Zone 6.

Zone 7: Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Side Impact Module. Refer to SIR Disabling and Enabling: Zone 7.

Zone 8: Not Used

Zone 9: Inflatable Restraint Passenger Presence System (PPS), Inflatable Restraint Side Impact Module, and Inflatable Restraint Seat Belt Tension Retractor sensor. Refer to SIR Disabling and Enabling: Zone 9.
« Last Edit: January 7, 2012, 18:32:50 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #1 on: April 16, 2005, 14:47:24 PM »

SIR Disabling and Enabling Zone 1

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.

     Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.
   5. Raise and support the vehicle.

     Important: This vehicle is equipped with two inflatable restraint front end sensors. When performing this procedure be sure to include both front end sensors.


 
   6. Remove the connector position assurance (CPA) from both front end sensor connectors (2) located on the frame crossmember (1).
   7. Disconnect both front end sensor connectors (2).

Enabling Procedure

   1. Remove the key from the ignition.


 
   2. Connect the front end sensor connectors (2) to both front end sensors.
   3. Install the CPAs to both front end sensor connectors (2).
   4. Install the SIR fuse into the fuse block.
   5. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
   6. Have the Diagnostic System Check done - SIR if the AIR BAG indicator does not operate as described.

« Last Edit: January 7, 2012, 18:33:32 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #2 on: April 16, 2005, 15:00:33 PM »

SIR Disabling and Enabling Zone 2

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.

     Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.
   5. Remove the LF door trim panel. Refer to Trim Panel Replacement - Side Front Door in Doors.


 
   6. Remove the connector position assurance (CPA) (3) from the side impact sensor yellow 2-way connector (5) located near the bottom left of the door (4).
   7. Disconnect the side impact sensor yellow 2-way connector (5).

Enabling Procedure

   1. Remove the key from the ignition.


 
   2. Connect the side impact sensor yellow 2-way connector (5) located near the bottom left of the door (4).
   3. Install the CPA (3) to the side impact sensor yellow 2-way connector (5).
   4. Install the LF door trim panel. Refer to Trim Panel Replacement - Side Front Door in Doors.
   5. Install the SIR fuse to the fuse block.
   6. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
   7. Have the Diagnostic System Check done - SIR if the AIR BAG indicator does not operate as described.
« Last Edit: January 7, 2012, 18:34:27 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #3 on: April 16, 2005, 15:25:17 PM »

SIR Disabling and Enabling Zone 3

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.

     Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.

 
   5. Remove the connector position assurance (CPA) (1) from the steering wheel module yellow 4-way connector (2) located left of the steering column near the knee bolster.
   6. Disconnect the steering wheel module yellow 4-way connector (2).

Enabling Procedure

   1. Remove the key from the ignition.


 
   2. Connect the steering wheel module yellow 4-way connector (2) located left of the steering column near the knee bolster.
   3. Install the CPA (1) to the steering wheel module yellow 4-way connector (2).
   4. Install the SIR fuse to the fuse block.
   5. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
   6. Perform the Diagnostic System Check - SIR if the AIR BAG indicator does not operate as described.
« Last Edit: January 7, 2012, 18:35:26 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #4 on: April 16, 2005, 15:34:56 PM »

SIR Disabling and Enabling Zone 5

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.

       Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.
 

 
   5. Remove the connector position assurance (CPA) from the I/P module yellow 4-way connector (1) located behind the I/P support.
   6. Disconnect the I/P module yellow 4-way connector (1).

Enabling Procedure

   1. Remove the key from the ignition.
 

 
   2. Connect the I/P module yellow 4-way connector (1) located behind the main I/P support.
   3. Install the CPA to the I/P module yellow 4-way connector (1).
   4. Install the SIR fuse to the fuse block.
   5. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
   6. Perform the Diagnostic System Check - SIR if the AIR BAG indicator does not operate as described.
« Last Edit: January 7, 2012, 18:49:26 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #5 on: April 16, 2005, 15:43:22 PM »

SIR Disabling and Enabling Zone 6

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.

     Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.
   5. Remove the RF door trim panel. Refer to Trim Panel Replacement - Side Front Door in Doors.


 
   6. Remove the connector position assurance (CPA) (3) from the side impact sensor yellow 2-way connector (5) located near the bottom right of the door (4).
   7. Disconnect the side impact sensor yellow 2-way connector (5).

Enabling Procedure

   1. Remove the key from the ignition.


 
   2. Connect the side impact sensor yellow 2-way connector (5) located near the bottom right of the door (4).
   3. Install the CPA (3) to the side impact sensor yellow 2-way connector (5).
   4. Install the RF door trim panel. Refer to Trim Panel Replacement - Side Front Door in Doors.
   5. Install the SIR fuse to the fuse block.
   6. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
   7. Perform the Diagnostic System Check - SIR if the AIR BAG indicator does not operate as described.
« Last Edit: January 7, 2012, 18:50:40 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #6 on: April 16, 2005, 16:10:03 PM »

SIR Disabling and Enabling Zone 7

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.

     Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.



   5. Remove the connector position assurance (CPA) (1) from the steering wheel module yellow 4-way connector (2) located left of the steering column near the knee bolster.
   6. Disconnect the steering wheel module yellow 4-way connector (2).


 
   7. Remove the CPA from the I/P module yellow 4-way connector (1) located behind the I/P support.
   8. Disconnect the I/P module yellow 4-way connector (1).


 
   9. Remove the CPA from the RF side impact module yellow 2-way connector (1) located under the passenger seat.
  10. Disconnect the RF side impact module yellow 2-way connector (1).
  11. Remove the CPA from the LF side impact module yellow 2-way connector (1) located under the driver seat.
  12. Disconnect the LF side impact module yellow 2-way connector (1).

Enabling Procedure

   1. Remove the key from the ignition.


 
   2. Connect the steering wheel module yellow 4-way connector (2) located left of the steering column near the knee bolster.
   3. Install the CPA (1) to the steering wheel module yellow 4-way connector (2).


 
   4. Connect the I/P module yellow 4-way connector (1) located behind the I/P support..
   5. Install the CPA to the I/P module yellow 4-way connector (1).


 
   6. Connect the RF side impact module yellow 2-way connector (1) located under the passenger seat.
   7. Install the CPA to the RF side impact module yellow 2-way connector (1).
   8. Connect the LF side impact module yellow 2-way connector (1) located under the driver seat.
   9. Install the CPA to the LF side impact module yellow 2-way connector (1).
  10. Install the SIR fuse to the fuse block.
  11. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
  12. Perform the Diagnostic System Check - SIR if the AIR BAG indicator does not operate as described.
« Last Edit: January 7, 2012, 18:52:07 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #7 on: April 16, 2005, 16:18:14 PM »

SIR Disabling and Enabling Zone 9

Disabling Procedure

     Important: Refer to SIR Service Precautions before disabling the SIR system.

   1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.
   2. Turn OFF the ignition.
   3. Remove the key from the ignition.


     Important:: With the SIR fuse removed and the ignition ON, the AIR BAG indicator illuminates. This is normal operation and does not indicate an SIR system malfunction.

   4. Remove the SIR fuse from the fuse block.


 
   5. Remove the connector position assurance (CPA) from the RF side impact module yellow 2-way connector (1) located under the passenger seat.
   6. Disconnect the RF side impact module yellow 2-way connector (1).

Enabling Procedure

   1. Remove the key from the ignition.


 
   2. Connect the RF side impact module yellow 2-way connector (1) located under the passenger seat.
   3. Install the CPA to the RF side impact module yellow 2-way connector (1).
   4. Install the SIR fuse to the fuse block.
   5. Staying well away from all air bags, turn ON the ignition, with the engine OFF.
         ■ The AIR BAG indicator will flash 7 times.
         ■ The AIR BAG indicator will then turn OFF.
   6. Perform the Diagnostic System Check - SIR if the AIR BAG indicator does not operate as described.
« Last Edit: January 7, 2012, 18:52:53 PM by ItsStopher »
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #8 on: February 25, 2007, 17:07:39 PM »

Passenger Presence System Rezeroing Procedure

Note: This is for information only and intended for use by qualified GM SIR trained technicians only.

Links inactive unless bolded!

Introduction

The passenger presence system (PPS) is a calibrated system that requires rezeroing when the system has been serviced or replaced. The procedures below are designed to assist in the rezeroing of the PPS. Before you start, read these procedures carefully and completely. For further information regarding the PPS refer to SIR System Description and Operation .

Important

The following procedures must be followed:


   1. Read this procedure carefully and completely.
   2. The PPS will not function properly if the PPS rezeroing procedure is not performed.
   3. Perform the Diagnostic System Check - SIR after successfully completing the rezeroing procedure to ensure the system is functioning properly.

Passenger Presence System (PPS) Rezeroing Procedure

Important

Before rezeroing the PPS, 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 PPS.


Important

When rezeroing the PPS, the instrument panel cluster (IPC) and dash lights will begin dimming on and off. This is normal operation during the rezeroing procedure and does not indicate additional system faults.


   1. Empty the front outboard passenger seat.
   2. Verify that all SIR and PPS components, connectors and CPAs are properly connected and mounted.
   3. Install a scan tool.
   4. Turn ON the ignition, with the engine OFF.

  Important

      All SIR and PPS DTCs must be cleared before rezeroing the PPS. The presence of current or history DTCs will prevent the PPS from rezeroing and may set additional DTCs.


   5. Use the scan tool in order to clear the SIR and PPS DTCs.
   6. With a scan tool, request the passenger presence system (PPS) rezeroing procedure.
   7. Initiate the PPS rezeroing procedure. The PPS will illuminate both PASSENGER AIR BAG ON and OFF indicators located on the rear view mirror until the rezeroing procedure has been completed.
          When the rezeroing procedure has been successfully completed, the PPS will display the current system status at the rear view mirror indicator.
          If the rezeroing procedure was unsuccessful, both PASSENGER AIR BAG ON and OFF indicators located on the rear view mirror will alternate from no illumination to full illumination in 1 second intervals for 5 seconds. The PPS will treat an unsuccessful rezero attempt as a system fault.
   8. If the rezeroing procedure was unsuccessful repeat this procedure. Due to the communication status between the SDM and the PPS module, this procedure may have to be repeated until a successful rezero attempt has been achieved.
   9. After the PPS has been successfully rezeroed perform the Diagnostic System Check - SIR .
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Re: SIR Warnings & Service Procedures (Used for reference)
« Reply #9 on: February 25, 2007, 17:33:11 PM »

 
Document ID# 853155

Inflatable Restraint Passenger Presence System Replacement - Front

Removal Procedure

Caution

Replace the passenger presence system as a complete assembly to prevent possible injury to the occupant. The bladder, the pressure sensor, the seat cushion, and the control module 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.


Refer to the upper image of the two below:

   1. Remove the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement in Seats.
   2. Disconnect the electrical connectors.
   3. Remove the bolts that retain the electronic control unit (ECU) (1) from the bottom of the passenger seat cushion frame.

Refer to the lower image of the two below.

   4. Remove the pressure switch (2) from the bottom of the passenger seat cushion frame.
   5. Remove the push in retainer's (1) that hold the bladder tot he seat cushion frame.
   6. Remove the inflatable restraint passenger presence system from the seat.

Installation Procedures

Refer to the lower image of the two below.

   1. Install the inflatable restraint passenger presence system to the seat.
   2. Install the push in retainer's (1) that hold the bladder to the seat cushion frame.

Refer to the upper image of the two below:

   3. Install the pressure sensor (2) to the bottom of the passenger seat cushion frame.
   4. Install the bolts that retain the (ECU) (1) to the bottom the passenger seat cushion frame.
 
     Tighten

      Tighten the bolts to 2 Nm (18 lb in).

   5. Connect the electrical connectors.
   6. Install the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement in Seats.
   7. Re-zero the inflatable restraint passenger presence system. Refer to Passenger Presence System Rezeroing Procedure in SIR.

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