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Component description for front reversible emergency tensioning retractors - GF91.40-P-4020CE

MODEL 204.0/2 with CODE (299) PRE-SAFE as of model year 2009 /YoM 08 

MODEL 204.3 with CODE (299) PRE-SAFE 

MODEL 204.9 with CODE (299) PRE-SAFE 

Shown on model 204.0 

Fig 1: Identifying Front Reversible Emergency Tensioning Retractors Components - Shown On Model 204.0
G10084794Courtesy of MERCEDES-BENZ USA

Location 

The reversible emergency tensioning retractors are located in the respective B-pillar.

Task 

The reversible emergency tensioning retractors perform the functions of the PRE-SAFE system and, as of 1.6.09, the seat belt slack reduction function.

The reversible emergency tensioning retractors perform the following tasks:

Reading in of signals 

The input factors are read in via the following connection:

Chassis CAN 

The signals are received by the reversible emergency tensioning retractor via chassis CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Evaluation of input factors 

The variables read in by the integrated microprocessor are evaluated and the components for the corresponding reversible emergency tensioning retractor are immediately actuated.

Component actuation 

The components are actuated via the following connection:

Chassis CAN 

The signals are sent by the reversible emergency tensioning retractor via chassis CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

REFER TO SYSTEM WIRING DIAGRAMS Wiring diagram, reversible emergency tensioning retractor   PE91.40-P-2200-97FAA