Seat Belt System Buick Enclave I

Fastener Tightening Specifications

Fastener Tightening Specifications

Scheme 1

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.
2. Inspect the shoulder belt guide in order to ensure that the following conditions are met: The shoulder belt guide swivels freely in the rear seat position. 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 seat belt webbing returns freely and completely back into the retractor. If the seat belt webbing will not retract, refer to «Seat Belt Does Not Retract»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system__seat-belt-does-not-retract) .
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.

Test the function of the automatic locking child restraint feature

1. To engage the automatic locking feature, pull the belt to the fully extended position. Allow the belt to retract to the proper position for the child seat and fasten the latch plate to the buckle. As the belt retracts, a ratcheting sound should be heard.
2. To disengage the automatic locking feature, allow the belt to retract to the fully stowed position. Before the belt is completely stowed, the cinch feature will reset, the ratcheting sound will stop and the belt will extract freely.

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 seats. The child restraint feature is located on the outboard position for the rear seat.

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

For information on removal of the rear seats cushions, refer to Rear Seat Cushion Cover and Pad Replacement (with 40 Percent Seat) , Rear Seat Cushion Cover and Pad Replacement (with 60 Percent Seat) .

Emergency Locking Retractors

Scheme 2

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 60 degrees or more. If the seat belt retractor does not operate as described, replace the retractor assembly. Refer to the following procedures: «Seat Belt Retractor Pretensioner Replacement - Front»(/buick/enclave/i-2007-2013/remont/airbag/#supplemental-inflatable-restraint-system) «Seat Belt Retractor Replacement - No. 1 Rear»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system) «Rear Seat Center Retractor Side Belt Replacement»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system) «Rear Seat Number 2 Retractor Side Belt Replacement»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system) «3rd Row Center Seat Belt Replacement»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system)

Symptoms - Seat Belts

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the seat belt system. Refer to «Checking Aftermarket Accessories»(/buick/enclave/i-2007-2013/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

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

Symptom List

1. Refer to «Seat Belt Indicator Malfunction - Driver»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system) in order to diagnose the symptom.
2. Refer to «Seat Belt Indicator Malfunction - Passenger»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system) in order to diagnose the symptom.

Seat Belt Does Not Retract

1. Grab the seat belt webbing and slowly and firmly extract 15-25 mm (5/8-1 in) of webbing from the seat belt.
2. Release the seat belt and allow the webbing to slowly retract back into the retractor.
3. Check to see if the seat belt is released. If the seat belt is not released, repeat steps 1 and 2, two times more.
4. If the retractor does not release after repeating the steps, replace with a new retractor.

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit/System Description

The inflatable restraint sensing and diagnostic module (SDM) sends the status of the driver seat belt switch via serial data to the instrument panel cluster (IPC). After receiving the message, the IPC controls the illumination of the driver seat belt indicator.

Reference Information

Schematic Reference

Seat Belt Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Seat Belt System Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
3. «Connector Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
4. «Wiring Repairs»(/buick/enclave/i-2007-2013/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

Circuit/System Verification

1. Ignition ON, command the instrument panel cluster lamp test ON and OFF with a scan tool. The driver seat belt indicator should turn ON and OFF when changing between the commanded states. If the indicator does not illuminate, replace the IPC.
2. Observe the scan tool Driver Seat Belt Switch parameter while connecting and disconnecting the seat belt. The parameter should display Buckled and Unbuckled when changing between seat belt states.

Circuit/System Testing

Note. When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector. Driver seat belt switch SDM Driver seat belt switch wiring harness connector SDM wiring harness connector

1. Ignition OFF, disconnect the harness connector at the driver seat belt switch.
2. Test for less than 1.0 ohms between low reference terminal 2 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, with the driver seat belt unbuckled, verify the scan tool Drive Seat Belt Status parameter displays Unbuckled. If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the SDM.
4. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the scan tool Driver Seat Belt Switch parameter displays Buckled. If not the specified value, test the signal circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace the SDM.
5. If the circuit tests normal, replace the driver seat belt switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Front Seat Belt Buckle Replacement»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system)
2. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for SDM or IPC replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/buick/enclave/i-2007-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

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.

If the SDM determines the passenger is sitting in the passenger seat and the seat belt has not been buckled, the SDM will send a serial data message to the instrument panel cluster (IPC) to illuminate the seat belt warning indicator. Then the IPC sends a ground signal to the inflatable restraint I/P module indicator to illuminate the passenger seat belt warning indicator.

Diagnostic Aids

Objects on the passenger seat can cause the passenger seat belt reminder to be commanded on. Depending on the sensing technology used, a conductive object (computers, MP3 players, cell phones, diagnostic scan tool, wires, a hand, etc.) placed on the passenger seat may cause the Passenger Presence Detection Module to command the passenger air bag indicator ON and/or command the passenger seat belt indicator ON. The fasten seat belt chime will also sound.

Schematic Reference

1. «Seat Belt Schematics»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system)
2. «SIR Schematics»(/buick/enclave/i-2007-2013/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Seat Belt Schematics»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system)

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

SIR System Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Testing for Intermittent Conditions and Poor Connections»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
3. «Wiring Repairs»(/buick/enclave/i-2007-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)
4. «Connector Repairs»(/buick/enclave/i-2007-2013/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 ON, observe the scan tool Passenger Seat Belt Switch parameter while buckling and unbuckling the passenger seat belt. The parameter should change between Buckled and Unbuckled. If the parameter does not cycle between the specified values, refer to Passenger Seat Belt Switch Circuit Malfunction.
2. Ignition ON, while sitting in the passenger seat with the seat belt unbuckled, verify the passenger seat belt warning indicator is illuminated on the inflatable restraint I/P module indicator. If the indicator is not illuminated, refer to Passenger Seat Belt Indicator Circuit Malfunction.

Passenger Seat Belt Switch Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the passenger seat belt switch.
2. Ignition OFF, test for less than 10 ohms between the low reference circuit terminal 2 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 scan tool Passenger Seat Belt Switch parameter is Unbuckled. If not the specified value, test the signal circuit terminal 1 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 1 and the low reference circuit terminal 2. Verify the scan tool Passenger 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.

Passenger Seat Belt Indicator Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the inflatable restraint I/P module indicator.
2. Have some sit in the passenger seat with the seat belt unbuckled. Ignition ON, test for less than 10 ohms between the low reference circuit terminal 5 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 IPC.
3. Install a 3A fused jumper wire between the signal circuit terminal 4 and the low reference circuit terminal 5. Verify the scan tool Passenger Seat Belt Switch parameter is Unbuckled. If not the specified value, test the signal circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, test or replace the inflatable restraint I/P module indicator.

Perform the Diagnostic Repair Verification after completing the repair

1. «Inflatable Restraint Instrument Panel Module Indicator Replacement»(/buick/enclave/i-2007-2013/remont/airbag/#supplemental-inflatable-restraint-system)
2. «Seat Belt Retractor Pretensioner Replacement - Front»(/buick/enclave/i-2007-2013/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Control Module References»(/buick/enclave/i-2007-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references)

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 the latch plate. Replace any seat belts that are cut or damaged in any manner.
3. Use only the correct seat belt anchor nuts/bolts. Tighten the correct seat belt anchor nut/bolt/screw to the correct torque value. Refer to «Fastener Tightening Specifications»(/buick/enclave/i-2007-2013/remont/restraints-control-systems/#seat-belt-system__fastener-tightening-specifications) .
4. Some seat belts and retractors require service as a set with service replacement components only. Do not repair individual components that must require service as a set.
5. 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.

Repairs and Inspections Required After a Collision

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.

Scheme 3

Seat Belt Latch Stop Installation

Scheme 4

Front Seat Belt Buckle Replacement

Scheme 5

Rear Seat Belt Buckle Replacement (With 40 Percent)

Scheme 6

Rear Seat Belt Buckle Replacement (With 60 Percent)

Scheme 7

Rear Seat Number 2 Buckle Side Belt Replacement (With 40 Percent Seat)

Scheme 8

Rear Seat Number 2 Buckle Side Belt Replacement (With 60 Percent Seat)

Scheme 9

Front Seat Belt Guide Adjuster Replacement

Scheme 10

Seat Belt Retractor Replacement - No. 1 Rear

Scheme 11

Rear Seat Center Retractor Side Belt Replacement

Scheme 12

3rd Row Center Seat Belt Replacement

Scheme 13

Rear Seat Number 2 Retractor Side Belt Replacement

Restraint System

Seat belts are the primary means of occupant restraint.

Seat belts help to keep occupants inside the passenger compartment and to gradually reduce the impact forces.

All seat belt retractors have emergency locks. The retractors remain unlocked during normal operation and under normal driving conditions. The retractors remain unlocked during normal conditions in order to allow free movement of the upper body of each occupant.

A pendulum locks the seat belt webbing into position. The pendulum causes a locking bar to engage a cog on the spool of the retractor mechanism when the following conditions occur

1. A rapid extraction of the seat belt webbing from the retractor
2. An abrupt change in the vehicle speed
3. An abrupt change in the vehicle direction
4. Operation of the vehicle on a steep upgrade
5. Operation of the vehicle on a steep downgrade

The seat belts, except for the driver seat belt, have an automatic locking feature, or a cinch feature. The cinch feature is recommended for securing a child seat. The cinch feature is engaged by fully extending the seat belt from the retractor. Once engaged, the seat belt can retract, but cannot be extended again until the cinch feature is cancelled. The cinch feature is cancelled when the seat belt has fully retracted.

This vehicle is also equipped with a supplemental inflatable restraint (SIR) system. Refer to SIR System Description and Operation for a description of the seat belt retractor pretensioner.

The front seat belt system includes the following components

1. The driver and passenger seat belt buckles, attached to the inboard side of the seat frame
2. The driver and passenger seat belt retractor pretensioners
3. The driver and passenger seat belt switch located in the seat belt buckles

There are two fasten safety belt indicators for this vehicle. The driver fasten safety belt indicator is located on the instrument panel cluster (IPC) and the passenger fasten safety belt indicator is located in the passenger ON/OFF indicator. Both indicators are controlled by the IPC at the request of the inflatable restraint sensing and diagnostic module (SDM). The driver indicator, when initiated, will illuminate for 20 seconds followed by 55 seconds of flashing. Audible warnings will initiate simultaneously with visual warnings and last for 8 seconds. Subsequently, similar events will occur until the seat belts are buckled or the ignition is returned to the OFF position.

The driver fasten safety belt indicator will illuminate when any of the following occur

1. The driver seat belt is unbuckled while the ignition is ON.
2. The driver seat belt remains unbuckled and vehicle speed is greater than 8 km/h (5 mph).
3. Three minutes after previous seat belt status reminder event
4. The IPC performs the displays test at the start of each ignition cycle.

The passenger fasten safety belt indicator will illuminate when any of the following occur

1. Twenty-five seconds after the ignition is ON and the front passenger seat belt remains unbuckled with passenger present
2. The front passenger seat belt remains unbuckled with passenger present and vehicle speed is greater than 5 mph (8 km/h).
3. Three minutes after previous seat belt status reminder event
4. The IPC performs the displays test at the start of each ignition cycle.

Refer to Symptoms - Seat Belts in order to diagnose faults of the fasten safety belt indicators.

See also:
• Rear Seat Cushion Cover and Pad Replacement (with 40 Percent Seat)
• Seat Belt Retractor Pretensioner Replacement - Front
• Checking Aftermarket Accessories
• Testing for Intermittent Conditions and Poor Connections
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• COMPONENT CONNECTOR END VIEWS - INDEX
• Circuit Testing
• Connector Repairs
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Fastener Caution
• Rear Storage Compartment Replacement
• SIR Disabling and Enabling
• Quarter Lower Rear Trim Panel Replacement (Acadia with TB5)
• Headlining Trim Panel Replacement
• Repairs and Inspections Required After a Collision
• Seat Belt Does Not Retract
• Seat Belt Retractor Replacement - No. 1 Rear
• Fastener Tightening Specifications
• Symptoms - Seat Belts