Seat belt lock system function - GF91.40-P-2001R

MODEL 230 

General 

The emergency tensioning retractor units on the front seats are equipped with a solenoid controlled seat belt lock system, in which the belt extension can be blocked depending on vehicle deceleration and vehicle inclination.

Function requirements: 

• C. 15R On

Function 

The vehicle-sensitive seatbelt lock sensor (A60) is connected via the left front seat adjustment control unit with memory (N32/1) with the left front seat belt lock adjusting solenoid (Y96) and via the right front seat adjustment control unit with memory (N32/2) with the right front seat belt lock adjusting solenoid (Y96/1).

If the vehicle deceleration exceeds 0.45 g or if the vehicle inclination is > 27°, the vehicle-sensitive seatbelt lock sensor actuates the solenoids for the seat belt lock via the front seat adjustment control units, blocking the belt extension.

The front seat adjustment control units also constantly receive a continuous signal over 2 discrete lines from the vehicle-sensitive seatbelt lock sensor and thus recognize immediately when a fault occurs in the actuation circuits of the seat belt lock solenoids.

Fault incidents are displayed in the instrument cluster (A1) by the airbag indicator and warning lamp (A1e15).

	Instrument cluster (IC), location / task	A1	GF54.30-P-3039R
	SRS airbag malfunction indicator lamp, location/task	A1e15	GF91.60-P-4011R
	Seat belt lock sensor, location/design/function	A60	GF91.40-P-4002R
	Left front seat adjustment control unit with memory location/task	N32/1	GF91.29-P-2106R
	Right front seat adjustment control unit, with memory location/task	N32/2	GF91.29-P-2107R
	Front emergency tensioning retractor, location/ task/design/function		GF91.40-P-4000R