Purpose
The lap pre-tensioner seat belts retract and tighten the seat belt webbing to protect the front passengers during a collision.
Function
The lap pre-tensioner seat belts operate (deploy) based on the operation signal from the SAS control module to instantly retract and tighten the belt webbing, restraining the driver.
The lap pre-tensioner seat belts operate in conjunction with the pre-tensioner seat belts.
Construction
The lap pre-tensioner seat belts are installed to the anchors of the front seat belts.
The lap pre-tensioner seat belts consist of the following parts shown in the figure:
Operation
Lap pre-tensioner activation
1. The gas generator emits a spark when a signal is received from the SAS control module, causing gas to form.
2. The gas pressure pushes the piston inside the tube, pulling the lead wire.
3. As the lead wire is pulled, the part of the seat belt attached to the wire is also pulled.
4. The slack in the belt is tightened by the front seat belt being pulled by the lap pre-tensioner seat belt and the seat belt ELR mechanism, restraining the passengers.
After activation
1. After operating (deploying) the pre-tensioner, the lead wire is pulled back. However the front seat belts are locked by activation of the stopper function so that the belt webbing is not released.
2. The restraint force of the seat belt is adjusted by the front seat belt load limiter mechanism, preventing injury to the driver and passenger from seat belt pressure.
Fail-safe
Function not equipped.
Lap timer
Introduction
Applies to: vehicles with lap timer
You can record and evaluate lap times with the
lap timer. You can operate the lap timer using the
multifunction steering wheel.
Opening the lap timer
Select in the instrument cluster: Vehicle functions
tab > button > Lap times.
An additiona ...
Front Body Straight Line Dimensions (2) [Dimensions]
Point symbol
Designation
Hole diameter or bolt or nut size mm {in}
A
Roof seamless location
-
B
Cabin side outer frame (front pillar outer) projection location
-
...
Constant Monitoring
The following components of the air bag systems are monitored by a diagnostic
system:
• Crash sensors, and diagnostic module (SAS
unit)
• Front air bag sensors
• Air bag modules
• Side crash sensors
• Air bag/Front seat belt pretensioner system
warning light
• Fron ...