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Seat Belt System Chevrolet Cobalt I

Restraints Control Systems 11 illustrations ~1648 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Child Tether Anchor Bolt25 N.m18 lb ft
Front Seat Belt Anchor Bolt45 N.m33 lb ft
Front Seat Belt Buckle Bolt45 N.m33 lb ft
Front Seat Retractor Bolt45 N.m33 lb ft
Rear Seat Belt Anchor Bolt45 N.m33 lb ft
Rear Seat Belt Buckle Nut45 N.m33 lb ft
Rear Seat Belt Retractor Bolt45 N.m33 lb ft
Shoulder Belt Height Adjuster Bolt45 N.m33 lb ft

Fastener Tightening Specifications

Seat Belt Schematic Icons

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

Scheme 1

Scheme 1: Seat Belt Schematics
Scheme 1: Seat Belt Schematics

Scheme 2

Scheme 2: Seat Belt Component Views
Scheme 2: Seat Belt Component Views
CalloutComponent Name
1Seat Belt Switch
2Heated Seat Element - Driver Back (KA1)
3Heated Seat Element - Driver Cushion (KA1)
4Seat Belt Switch Connector - Driver
5C315
6Heated Seat Module - Driver (KA1)

Seat Belt Connector End Views

Seat Belt Switch - Driver Connector Part Information OEM: 15409405 Service: See Catalog 3-Way F MISC (BK) Pin Wire Color Circuit No. Function A TN/WH 238 Seat Belt Switch - Left Signal B - - Not Used C PK 5057 Low Reference

Diagnostic Starting Point - Seat Belts

Begin the system diagnosis by reviewing the Seat Belt System Description and Operation . Reviewing the description and operation information will help in determining the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information will also help in determining if the condition described by the customer is normal operation.

Refer to Symptoms - Seat Belts in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Operational and Functional Checks

IMPORTANTIf the vehicle has been in a collision, refer to Repairs and Inspections Required After a Collision for additional information.

Perform the following inspection from the driver seat.

  1. Turn the ignition switch to the ON position. Verify proper operation of the seat belt reminder lamp with the belt buckled and with the belt unbuckled. Refer to «Seat Belt System Description and Operation»(/chevrolet/cobalt/i-2004-2010/remont/restraints-control-systems/#seat-belt-system) .
  2. Inspect the shoulder belt guide in order to ensure that the following conditions are met: The shoulder belt guide moves freely. The seat belt webbing is seated flatly in the guide slot. The seat belt webbing does not bind.
  3. Verify that the seat belt buckle faces inboard and is accessible.
  4. Verify that the seat belt retractor units are securely attached.
  5. Verify that the seat belt anchor bolts are secure.
  6. Fully extend the seat belt webbing. Verify that the seat belt webbing does not have any twists or tears.
  7. Allow the seat belt webbing to retract. Verify that the webbing returns freely and completely back in the retractor.
  8. Snap the seat belt latch plate into the buckle.
  9. Sharply tug on the seat belt latch plate and the buckle. Verify that the seat belt latch plate and the buckle remain locked when tugged.
  10. Push the button on the buckle. Verify that the seat belt latch plate releases easily from the buckle. Verify that the button returns to its original position.

Repeat the inspection procedure, steps 2-10, from the front passenger seat.

Perform the following steps in order to inspect the center seat belts

  1. Verify that the center seat belts are accessible.
  2. Verify that the center seat belts have no twists or tears in the webbing.
  3. Snap the center seat belt latch plate into the buckle.
  4. Sharply tug on the seat belt latch plate and the buckle. Verify that the seat belt latch plate and the buckle remain locked when tugged.
  5. Push the button on the buckle. Verify that the seat belt latch plate releases easily from the buckle. Verify that the button returns to its original position.

Repeat the inspection procedure, steps 2-10, from the rear seat.

Repeat the center seat belt inspection procedure, steps 1-5, from the rear seat.

Emergency Locking Retractors

CAUTIONPerform this test in an area clear of other vehicles or obstructions. Do not conduct this test on the open road. A large, empty parking lot is suitable. Failure to observe this precaution may result in damage to the vehicle and possible personal injury.

Scheme 3

Scheme 3
Scheme 3
  1. Fasten the seat belts. An assistant is needed when the retractor under test is not part of the driver seat belt.
  2. Accelerate the vehicle slowly to 16 km/h (10 mph) and apply the brakes firmly.
  3. Verify that the seat belt locks when braking firmly.
  4. If the belt does not lock, proceed with the following steps. Remove the seat belt retractor assembly. Tilt the seat belt retractor slowly. Ensure that the seat belt webbing can be pulled from the retractor at an inclination of 15 degrees or less and cannot be pulled from the retractor at an inclination of 45 degrees or more. If the seat belt retractor does not operate as described, replace the retractor assembly. Refer to the following procedures: PSD SIE TITLE Error: SIE linked to empty Cell ID 75851 in SIR «Seat Belt Replacement - Rear»(/chevrolet/cobalt/i-2004-2010/remont/restraints-control-systems/#seat-belt-system)

Symptoms - Seat Belts

IMPORTANTReview the seat belt system description and operation in order to familiarize yourself with the system and how it functions. Refer to Seat Belt System Description and Operation .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the seat belt system. Refer to «Checking Aftermarket Accessories»(/chevrolet/cobalt/i-2004-2010/remont/electrical-component-locations/#wiring-systems-electrical-power-management__checking-aftermarket-accessories) in Wiring Systems.
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

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

Symptom List

Refer to the following symptom diagnostic procedure in order to diagnose the symptom

Seat Belt Indicator Circuit Malfunction

StepActionYesNo
Schematic Reference: Seat Belt Schematics
1Did you review the Seat Belt System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Seat Belts
2Turn ON the ignition, with the engine OFF. Monitor the fasten safety belt indicator while buckling and unbuckling the driver seat belt. Does the system operate properly?Go to Testing for Intermittent Conditions and Poor Connections in Wiring SystemsGo to Step 3
3Buckle the driver's seat belt. With a scan tool, observe the Driver Side Belt Status parameter in the SIR scan tool data list. Buckle the passenger seat belt. Does the scan tool indicate that the Driver Side Belt Status parameter displays Buckled?Go to Step 4Go to Step 5
4Replace the instrument panel cluster (IPC). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?Go to Step 8
5Turn OFF the ignition. Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Disconnect the driver seat belt switch connector. Test the driver seat belt switch signal circuit for an open or high resistance. Did you find and correct the condition?Go to Step 8Go to Step 6
6Test the driver seat belt switch ground circuit for an open or high resistance. Did you find and correct the condition?Go to Step 8Go to Step 7
7Replace the driver seat belt switch. Refer to Seat Belt Buckle Replacement - Front . Did you complete the replacement?Go to Step 8
8Reconnect all components and connectors. Operate the system in order to verify the repair. Operate the system in order to verify the repair.Did you find and correct the condition?System OKGo to Step 3

Seat Belt Indicator Circuit Malfunction

Seat Belt Service Precautions

  1. Do not bleach or dye the seat belt webbing. Use only the following items in order to clean the seat belt webbing: A mild soap and water solution A soft brush or cloth
  2. Keep sharp edges and damaging objects away from the seat belts. Do not bend or damage any part of the seat belt buckle or latch plate. Replace any seat belts that are cut or otherwise damaged in any manner.
  3. Use only the correct seat belt anchor fasteners. Begin tightening the seat belt anchor fasteners by hand in order to ensure that the bolt is threaded straight. Tighten the correct seat belt anchor nut to the correct torque value. Refer to «Fastener Tightening Specifications»(/chevrolet/cobalt/i-2004-2010/remont/restraints-control-systems/#seat-belt-system__fastener-tightening-specifications) .
  4. Verify that the replacement part number is correct for the vehicle at that seating position. Do not substitute a seat belt from a different seating position.
  5. Replace any seat belts that have a visible Caution label instructing replacement.

Repairs and Inspections Required After a Collision

CAUTIONRestraint systems can be damaged in a collision. To help avoid injury and ensure that all parts in need of replacement are replaced: Replace any seat belt system that was in use during the collision serious enough to deploy any automatic restraint device such as air bags and seat belt pretensioners. This not only includes seat belt systems in use by people of adult size, but seat belt systems used to secure child restraints, infant carriers and booster seats, including LATCH system and top tether anchorages. Replace any seat belt system that has torn, worn, or damaged components. This not only includes adult seat belt systems, but built-in child restraints and LATCH system components, if any. Replace any seat belt system if you observe the words "REPLACE" or "CAUTION", or if a yellow tag is visible. Do not replace a seat belt if only the child seat caution label is visible. Replace any seat belt system if you are doubtful about its condition. This not only includes adult seat belt systems, but built-in child restraints, LATCH system components, and any restraint system used to secure infant carriers, child restraints, and booster seats. Do NOT replace single seat belt system components in vehicles that have been in a collision as described above. Always replace the entire seat belt system with the buckle, guide and retractor assembly, which includes the latch and webbing material.

After a minor collision where no automatic restraint device was deployed, seat belt system replacement may not be necessary unless some of the parts are torn, worn, or damaged.

After any collision, verify that the pretentioners on the front seat belt retractor have not deployed.

  1. Pull the seat belt webbing.
  2. If you hear a grinding or a rattling, replace the retractor.

Scheme 4

Scheme 4: Seat Belt Buckle Replacement - Front
Scheme 4: Seat Belt Buckle Replacement - Front
CalloutComponent Name
NOTE: Refer to Fastener Notice in Cautions and Notices. Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure Remove the front seat. Refer to Seat Replacement - Front Bucket . Remove the seat cushion inner trim panel. Refer to Seat Cushion Inner Trim Panel Replacement in Seats. Remove the seat cushion cover and pad. Refer to Seat Cushion Cover and Pad Replacement - Front
1Bolt, Seat Belt Buckle Tighten: 45 N.m (33 lb ft)
2Buckle Assembly, Seat Belt
NOTE
Refer to Fastener Notice in Cautions and Notices.

Seat Belt Buckle Replacement - Front

Scheme 5

Scheme 5: Seat Belt Buckle Replacement - Rear
Scheme 5: Seat Belt Buckle Replacement - Rear
CalloutComponent Name
NOTE: Refer to Fastener Notice in Cautions and Notices. Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure: Remove the rear seat cushion. Refer to Seat Cushion Replacement - Rear in Seats.
1Nut, Rear Seat Belt Buckle - Right Tighten: 45 N.m (33 lb ft)
2Buckle Assembly, Rear Seat Belt - Right
3Nut, Rear Seat Belt Buckle - Center and Left Tighten: 45 N.m (33 lb ft)
4Buckle Assembly, Rear Seat Belt - Center and Left
NOTE
Refer to Fastener Notice in Cautions and Notices.

Seat Belt Buckle Replacement - Rear

Scheme 6

Scheme 6: Seat Belt Replacement - Rear
Scheme 6: Seat Belt Replacement - Rear
CalloutComponent Name
NOTE: Refer to Fastener Notice in Cautions and Notices. Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure Remove the rear seat cushion. Refer to Seat Cushion Replacement - Rear in Seats. Remove the rear seat back. Refer to Seat Back Replacement - Rear Split Folding in Seats. Remove the rear window shelf trim panel. Refer to Trim Panel Replacement - Rear Window Shelf in Interior Trim.
1Bolt, Rear Seat Belt Anchor - Right Tighten: 45 N.m (33 lb ft)
2Bolt, Rear Seat Belt Retractor - Right Tighten: 45 N.m (33 lb ft)
3Retractor Assembly, Rear Seat Belt - Right
4Bolt, Rear Seat Belt Anchor - Center Tighten: 45 N.m (33 lb ft)
5Bolt, Rear Seat Belt Retractor - Center Tighten: 45 N.m (33 lb ft)
6Retractor Assembly, Rear Seat Belt - Center
7Bolt, Rear Seat Belt Anchor - Left Tighten: 45 N.m (33 lb ft)
8Bolt, Rear Seat Belt Retractor - Left Tighten: 45 N.m (33 lb ft)
9Retractor Assembly, Rear Seat Belt - Left
NOTE
Refer to Fastener Notice in Cautions and Notices.

Seat Belt Replacement - Rear

Scheme 7

Scheme 7: Seat Belt Height Adjuster Replacement - Front
Scheme 7: Seat Belt Height Adjuster Replacement - Front
CalloutComponent Name
NOTE: Refer to Fastener Notice in Cautions and Notices. Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure: Remove the center upper garnish molding. Refer to Garnish Molding Replacement - Center Pillar Upper in Interior Trim
1Bolt, Seat Belt Height Adjuster (Qty 2) Tighten: 45 N.m (33 lb ft)
2Height Adjuster, Seat Belt
NOTE
Refer to Fastener Notice in Cautions and Notices.

Seat Belt Height Adjuster Replacement - Front

Scheme 8

Scheme 8: Seat Belt Retractor Replacement - Front
Scheme 8: Seat Belt Retractor Replacement - Front
CalloutComponent Name
NOTE: Refer to Fastener Notice in Cautions and Notices. Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure: Disable the SIR in Zones 2 or 6. Refer to SIR Disabling and Enabling Zone 2 or SIR Disabling and Enabling Zone 6 in SIR.
1Bolt, Seat Belt Anchor Tighten: 45 N.m (33 lb ft) Tip: Move the seat to the full forward position to gain access to the bolt.
2Cover, Seat Belt Adjuster
3Bolt, Seat Belt Adjuster Tighten: 45 N.m (33 lb ft)
4Bolt, Seat Belt Retractor Tighten: 45 N.m (33 lb ft) Tip: Remove the center pillar lower garnish molding to gain access to the bolt. Refer to Garnish Molding Replacement - Center Pillar Lower in Interior Trim.
5Retractor Assembly, Front Seat Belt
NOTE
Refer to Fastener Notice in Cautions and Notices.

Seat Belt Retractor Replacement - Front

Scheme 9

Scheme 9: Bezel Replacement - Child Restraint Tether Anchor
Scheme 9: Bezel Replacement - Child Restraint Tether Anchor
CalloutComponent Name
Fastener Tightening Specifications: Refer to Fastener Tightening Specifications .
1Bezel, Child Restraint

Bezel Replacement - Child Restraint Tether Anchor

Scheme 10

Scheme 10: Child Restraint Tether Anchor Replacement
Scheme 10: Child Restraint Tether Anchor Replacement
CalloutComponent Name
NOTE: Refer to Fastener Notice in Cautions and Notices. Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure: Remove the Rear Window Shelf Trim Panel. Refer to Trim Panel Replacement - Rear Window Shelf in Interior Trim
1Bolt, Child Tether Anchor (Qty 3) Tighten: 25 N.m (18 lb ft)
2Anchor Assembly, Child Tether
NOTE
Refer to Fastener Notice in Cautions and Notices.

Child Restraint Tether Anchor Replacement

Scheme 11

Scheme 11: Guide Replacement - Rear Seat Shoulder Belt
Scheme 11: Guide Replacement - Rear Seat Shoulder Belt
CalloutComponent Name
Fastener Tightening Specifications: Refer to Fastener Tightening Specifications .
1Guide Assembly, Rear Shoulder Belt Tip: Remove the Rear Seat Belt Anchor Bolt and feed the Belt Through the Guide. Refer to Seat Belt Replacement - Rear .

Guide Replacement - Rear Seat Shoulder Belt

IMPORTANTIf the vehicle has been in a collision, refer to Repairs and Inspections Required After a Collision for additional information.

The front seat belt system includes a driver and/or passenger seat belt retractor and buckle.

The driver seat belt system, includes a seat belt switch in the driver seat buckle which controls a reminder lamp and a tone alarm.

  1. When the driver seat belt is buckled, the driver door is closed, and the ignition switch is turned ON, the following events will occur: The tone alarm will not operate. The reminder lamp will not operate.
  2. When the driver seat belt is not buckled, the driver door is closed, and the ignition switch is in ON position, the following events will occur: The tone alarm will operate for 4-8 seconds and then go OFF. The reminder lamp will operate for 20 seconds, until the driver seat belt is buckled.

The rear seat belt system includes the following components

  1. The rear seat belt retractor is located under the rear shelf trim panel and is attached to the rear shelf body panel.
  2. The center rear seat belt buckle and the outer seat belt buckle are located in the center of the seat cushion and they are attached to the rear floor pan.

Child Seat Restraint System

CAUTIONA child in a rear-facing child restraint can be seriously injured if the right-front passengers air bag inflates. This is because the back of a rear-facing child restraint would be very close to the inflating air bag. NEVER use a rear-facing child restraint in this vehicle. If a forward-facing child restraint is suitable for your child, ALWAYS move the front passenger seat as far back as it will go and then install the child restraint. Be sure the child restraint position does not conflict with any additional requirements provided by the manufacturer. For more information, refer to the vehicle owners manual and the instruction that came with the child restraint.

The child seat may only be used in a forward facing seating location. The child seat should be installed and secured according to the manufacturer's directions. If the child seat has a top strap, the seat will need to be anchored. Passengers should not be allowed to sit at locations where the seat belts are being used to secure the child seat.

All vehicles are equipped with a dual-mode type retractor with emergency and automatic locking features. The automatic locking feature is for restraint of a child seat. The child seat can be secured by pulling the seat belt all the way out to lock it. Then, tighten the seat belt around the child seat.

If a child seat is to be used in the second seat position, a special dealer-installed anchor must be used in order to anchor the child seat top strap. This only applies to the seats designed with the top strap provision and for the vehicles sold in Canada. In order to ensure the correct top strap angle, the child seat is only to be used at the seating position for which the top strap anchor is installed.

Fasten Safety Belt Indicator (ISO Symbol) (Red)

The fasten safety belt indicator may only be ON during RUN. The instrument panel cluster (IPC) illuminates the fasten safety belt indicator under the following conditions

  1. During the bulb check
  2. The inflatable restraint sensing and diagnostic module (SDM) sends the status of the driver seat belt switch to the IPC via a serial data communication message. If the seat belt is unfastened, the IPC will illuminate the fasten safety belt indicator for 72 seconds or until the seat belt is fastened. If the seat belt is unfastened within 8 seconds following the bulb check, the IPC requests 5 chimes to sound.