GF91.60-P-1100RCU Passenger-Side Seat Occupied Recognition Function

GF91.60-P-1100RCU Passenger-side Seat Occupied Recognition Function
- with CODE (494) USA version

General function requirements
- C. 15R On

Passenger-side seat occupied recognition, general
The passenger-side seat occupied recognition detects whether the front passenger seat is occupied.

The passenger-side seat occupied recognition consists of the following subfunctions:
^ Function sequence for front passenger seat occupied recognition
^ Function sequence for outputting status and fault messages

Function sequence for front passenger seat occupied recognition
The front passenger seat occupied recognition and automatic child seat recognition are determined by means of the weight that is on the front passenger seat. The weight is determined using a pressure measurement by the pressure sensor (B48/4) in a seat mat filled with silicone. The force that is introduced via the seat belt is measured by the belt tension sensor (B48/3) so that weight classification corrections can be made if necessary.

The weight on top is determined by the weight sensing system (WSS) control unit (N110) using these values and a weight classification is made. The information is relayed to the restraint systems control unit (N2/7) via interior CAN.

Child seats must conform to the American FMVSS 208 specification in order to be recognized by the WSS control unit.

The following conditions are defined depending on the weight classification:
- Seat unoccupied
Front passenger airbag unit, front passenger sidebag unit and front passenger buckle emergency tensioning retractor unit are disabled

- Seat occupied
Light weight (e.g. child seat) and belt buckled: Front passenger airbag unit is disabled Person detected:
Required restraint equipment enabled

Function sequence for outputting status and fault messages
The output of status and fault messages consists of the following subfunctions:
^ Function sequence for actuating the automatic child seat recognition airbag OFF indicator lamp (N72/1e1)
^ Function sequence for outputting fault messages

Function sequence for actuating the automatic child seat recognition airbag OFF indicator lamp
The signal for switching on and off the automatic child seat recognition airbag OFF indicator lamp is transmitted by the restraint systems control unit via interior CAN to the upper control panel control unit (N72/1). It switches the automatic child seat recognition airbag OFF indicator lamp On or Off. If a front passenger seat is recognized to be occupied, the automatic child seat recognition airbag OFF indicator lamp is switched off.

Function sequence for outputting fault messages
The status of the supplemental restraint system is transmitted by the restraint systems control unit via the interior CAN to the instrument cluster (A1), which displays a corresponding message.