Ferrari California, Workshop Manual

Page: 1629 / 1727

Operation
Before activation, the device is in (G) state.
When the ECU detects a collision of a severity above the set threshold, it sends a signal to the pretensioner,
firing the pyrotechnic charge (1) of the gas generator: the combustion of the propellant (2) releases high
pressure gas, exerting an upward force on the rack piston (3) .
This motion is transmitted via pinions (4) and (5) to the toothed bushing (6) which rewinds the belt by a few
centimetres (state H ).
This takes up any slack between the belt and the body of the occupant immediately before the retention
action begins.
Once activated, a pretensioner is no longer functional, cannot be repaired and must be replaced.
Seat belt and pretensioner care
Replace the seat belt after a severe collision even if it does not appear damaged.
Periodically check that the anchor screws are tightly fastened and that the belt itself is in good condition
and winds and unwinds smoothly.
The belt must be kept clean; dirt may compromise the effectiveness of the retractor.
To clean the belt, hand wash with water and mild soap, rinse and allow to dry. Do not use strong
detergents, bleach or harsh solvents that could weaken the fibres.
Do not wet the retractors: water infiltration may compromise operation.
The pretensioner requires no maintenance or lubrication. If the pretensioner has been immersed in water
or mud, it must be replaced.
The pretensioners must be replaced every 15 years .
Never dismantle or modify the belts, retractors and pretensioners.