GF80.57-P-6003RC Component Description For the EZS Control Unit

GF80.57-P-6003RC Component Description For The EZS Control Unit

Component Identification:

Location
The EIS control unit is located on the right, next to the steering column.

Tasks
The EIS control unit has the following tasks:
^ Control of functions
^ Reading in of signals
^ Evaluation of input factors
^ Actuation of components
^ Power supply for transmitter key (A8/1)

Control of functions
The EIS control unit is the master control unit for the following functions:
- Central locking
- Convenience feature
- Drive authorization stage 3 (DAS 3)
- Shift lock function (with transmission 722)
- Encrypted data exchange according to hash method for key identification
- Rotation angle-dependent activation of individual terminals (c. 15, c. 15R, c. 50, c. 15X and c. 15C)
- Rotation lock for transmitter key by locking lift solenoid

Reading in of signals
The input factors are read in with the following connections:
^ Direct line
^ Interior CAN
^ Engine compartment CAN

Direct line
The following signals are read in via a direct line:
- Circuit 30
- C. 30b (backup battery supply)

Interior CAN
The EIS control unit reads in information relevant for function via the interior CAN.

Engine compartment CAN
The EIS control unit reads in information relevant for function via the engine compartment CAN.

Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.

Actuation of components
Components are actuated with the following lines:
^ Direct line
^ Interior CAN
^ Engine compartment CAN

Direct line
The following components are actuated via a direct line:
- c. 30 to electric steering lock control unit (N26/5) (locking voltage)
- Serial data line to electric steering lock control unit

Interior CAN
The EIS control unit transmits the request for function-relevant actuations via interior CAN.

Engine compartment CAN
The EIS control unit transmits the request for function-relevant actuations via engine compartment CAN.

Power supply for transmitter key
When the transmitter key is inserted into the EIS control unit, it switches on the inductive power transmission for power supply to the transmitter key.