Operational and Functional Checks
| IMPORTANT | If 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
- 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.
- Inspect the shoulder belt guide in order to ensure that the following conditions are met: The shoulder belt guide swivels freely. The seat belt webbing is seated flatly in the guide slot. The seat belt webbing does not bind.
- Verify that the seat belt buckle faces inboard and is accessible.
- Verify that the seat belt retractor units are securely attached.
- Verify that the seat belt anchor bolts are secure.
- Fully extend the seat belt webbing. Verify that the seat belt webbing does not have any twists or tears.
- 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»(ref-299131-S35269161762008092200000) .
- Snap the seat belt latch plate into the buckle.
- 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.
- 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
- 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.
- 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
- Verify that the center seat belts are accessible.
- Verify that the center seat belts have no twists or tears in the webbing.
- Snap the center seat belt latch plate into the buckle.
- 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.
- 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 the following procedures
- «Rear Seat Replacement»(ref-299120-S11579054362008092200000)
- «Rear Number 2 Seat Replacement»(ref-299120-S12110051962008092200000)
- «Rear Seat Cushion Frame Replacement»(ref-299120-S39131096992008092200000)
Circuit/System Description
The driver seat belt switch is a 2-wire switch wired to the inflatable restraint sensing and diagnostic module (SDM) using a signal circuit and a low reference circuit. When the seat belt is unbuckled the switch is closed, and when the seat belt is buckled the switch is open. The SDM sends the status of the driver seat belt via serial data to the instrument panel cluster (IPC). After receiving the message, the IPC controls the illumination of the driver seat belt indicator.
Front Seat Belt System Operation
| CAUTION | To help avoid personal injury from unrepaired crash damage to a restraint system, perform the seat belt check for each seat belt system. Replace the seat belt system if there is any doubt about the condition of system components. |
- The front seat belt system includes a driver and\or passenger seat belt retractor and buckle.
- The LF seat belt system, includes a seat belt switch in the LF seat buckle which controls a seat belt indicator and an audio alarm. When the LF seat belt is buckled, the LF door closed, and the ignition switch is in the ON position, the following events occur: The audio alarm will not operate. The seat belt indicator will not operate.
- When the LF seat belt is not buckled, the LF door closed, and the ignition switch is in the RUN position, the following events will occur: The audio alarm will operate for 4 to 8 seconds and then turn OFF. The seat belt indicator will operate for 20 seconds, until the LF seat belt is buckled. The seat belt indicator will flash for an additional 55 seconds before turning OFF. To diagnose further failure of the seat belt indicator refer to «Symptoms - Seat Belts»(ref-299131-S29506733942008092200000) .