Component description for chassis gateway control unit - GF54.21-P-1010GN
MODEL 166 as of model year 2016 with CODE 23P (Driving Assistance package Plus)
MODEL 292 with CODE 23P (Driving Assistance package Plus)
Shown on model 292
Location
The chassis gateway control unit is secured under a cover at the front of the front passenger footwell.
Task
Signal routing by the chassis gateway control unit only takes place between the corresponding CAN bus and suspension FlexRay and not between two CAN buses.
The chassis gateway control unit routes the signals of the following buses:
- Chassis CAN 1 (CAN E1)
- Chassis CAN 2 (CAN E2)
- Vehicle dynamics CAN (CAN H)
- Chassis FlexRay (Flex E)
The corresponding signal flows are described in the respective function descriptions and in the associated block diagrams or function schematics.
In addition, the chassis gateway control unit monitors the transmit readiness ("timeout period") of the control units named below using certain incoming signals:
Control units connected through chassis CAN 1:
- CDI control unit (N3/9) (with diesel engine)
- ME-SFI control unit (N3/10) (with gasoline engine)
- Electronic Stability Program control unit (N30/4)
- Electronic ignition lock control unit (N73)
Control units connected via chassis CAN 2:
- Instrument cluster (A1)
- Electrical power steering control unit (N68)
Control units connected via vehicle dynamics CAN:
- Electronic Stability Program control unit
Control units connected via suspension FlexRay:
- Stereo multifunction camera (A40/13)
- Front long-range radar sensor (B92)
- Radar sensors control unit (N62/1)
Reasons for a detected "timeout period" can be interruption of the power supply to the respective control unit, control unit internal reset, CAN communication errors and hardware faults, for example.
| Wiring diagram for FlexRay gateway control unit | PE54.21-P-2143-97NBA |