GF91.60-P-4048MCU Restraint Systems Control Unit, Component Description

GF91.60-P-4048MCU Restraint Systems Control Unit, Component Description







N2/7 Restraint systems control unit

Location
The restraint systems control unit is in the center on the underside of the crossmember beneath the instrument panel.

General
The restraint systems control unit controls the supplemental restraint system and is a subscriber on the Controller Area Network (data bus/CAN bus) (CAN). If an accident occurs, the restraint systems control unit specifically deploys the restraint units. This includes the airbag units and the emergency tensioning retractor units. The restraint systems control unit has self- monitoring and fault monitoring features.
Frontal, side-on and rear-end collisions and a rollover along the longitudinal vehicle axis are detected and differentiated.

Scope of tasks
^ Self-test and continuous monitoring of supplemental restraint system
^ Storage of faults that have occurred
^ Fault output via the diagnosis communication
^ System readiness indication via CAN to the instrument cluster (A1)
^ Power supply
- Driver head/thorax bag sensor (A53)
- Front passenger head/thorax bag sensor (A54)
- Driver-side frontal acceleration sensor (B48/1)
- Passenger-side frontal acceleration sensor (B48/2)
^ Accident detection and ignition time determination
^ Restraint equipment triggering
^ Capacitor for the event of a battery disconnection in the event of a collision
^ Evaluation of the sensor integrated in the restraint systems control unit
^ Seat belt reminder warning request
^ Evaluation of front passenger seat occupied recognition

Direct entries
^ Tml. 15
^ Tml. 31
^ Driver head/thorax bag sensor
^ Front passenger head/thorax bag sensor
^ Driver-side frontal acceleration sensor
^ Passenger-side frontal acceleration sensor
^ Driver side seat belt buckle restraint systems switch (S68/3)
^ Front passenger-side seat belt buckle restraint systems switch (S68/4)

Direct outputs
^ Left ETR squib (R12/1)
^ Right ETR squib (R12/2)
^ Passenger airbag squib 1 (R12/4)
^ Passenger airbag squib 2 (R12/5)
^ Driver airbag squib 1 (R12/13)
^ Driver airbag squib 2 (R12/14)
^ Driver head/thorax bag squib (R12/20)
^ Front passenger head/thorax bag squib (R12/21)
^ Automatic child seat recognition airbag OFF indicator lamp E16)