Component Description For Weight Sensing System (WSS) Control Unit - GF91.60-P-4046KJU

MODEL 453.3/4 

with CODE 494 (US version) 

Location 

The WSS control unit is located on the underside of the on the front passenger seat occupancy recognition seat mat (1).

Task 

The WSS control unit determines the weight applied to the front passenger seat and the weight class. The WSS control unit tasks are structured as follows:

• Read in sensors and signals 
• Evaluation of input factors 
• Transmitting signals 

Read in sensors and signals 

The input factors are read in via the following connections:

• Direct line

Direct line 

The following signals and sensors are read via direct lines:

• Internal pressure sensor in the WSS control unit

Evaluation of input factors 

The read-in input factors are evaluated by the integrated microprocessor and sent for further processing over the seat occupancy LIN (LIN E2) to the supplemental restraint system control unit (N10/2).

Transmitting signals 

The following signals are sent over the seat occupancy LIN to the supplemental restraint system control unit:

• Seat occupied recognition status
• Weight class

Structure 

The front passenger seat occupancy recognition seat mat (1) and the WSS control unit form a unit, whereby the WSS control unit is located at the end of the front passenger seat occupancy recognition seat mat (1).

function 

The applied weight is determined by measuring the pressure in the front passenger seat occupancy recognition seat mat (1) filled with silicone. The pressure measurement is performed by the seat occupied recognition pressure sensor integrated into the WSS control unit.

	Wiring diagram for airbag control unit	Model 453.391/491	PE91.60-P-2105-97BEA
		Model 453.3 (except 453.391), 453.4 (except 453.491), connectors BA and BC	PE91.60-P-2105-97BBB
		Model 453.3 (except 453.391), 453.4 (except 453.491), connector BB	PE91.60-P-2105-97BBA