GF80.57-P-6001CE Electronic Ignition Switch Control Unit, Component Description

GF80.57-P-6001CE Electronic Ignition Switch Control Unit, Component Description

Component Identification:

Location
The electronic ignition switch control unit is located on the right next to the steering column.

Task
The electronic ignition switch control unit has the following tasks:
^ Reading in of signals
^ Evaluation of input factors
^ Control of functions
^ Actuation of components
^ Power supply for transmitter key (A8/1)
^ Interface to KEYLESS-GO control unit (N69/5) (with code (889) Keyless-Go)

Reading in of signals
The input factors are read in with the following connections:
^ Direct line
^ Interior CAN (CAN B)
^ Chassis CAN (CAN E)

Direct line
The electronic ignition switch control unit communicated with the electric steering lock control unit (N26/5) via an bi-directional serial data line.

Interior CAN
The signals are read in by the electronic ignition switch control unit via the interior CAN.
The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Chassis CAN
The signals are read in by the electronic ignition switch control unit via the chassis CAN.
The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

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

Control of functions
The electronic ignition switch control unit controls the following functions:
- Central locking (CL [ZV])
- Convenience feature (CF)
- Drive authorization stage 3 (DAS 3):
- Shiftlock function (with transmission 722)
Encrypted data exchange according to hash method for key identification

- Activation of individual circuits (c. 15C, c. 15R, c. 15, c. 15X and c. 50) depending on rotation angle

Actuation of components
The actuation of the components takes place via the following connections:
^ Direct line
^ Interior CAN
^ Chassis CAN

Direct line
The electronic ignition switch control unit communicated with the electric steering lock control unit via an bi-directional serial data line.

Interior CAN
The signals are transmitted by the electronic ignition switch control unit via the interior CAN.
The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Chassis CAN
The signals are transmitted by the electronic ignition switch control unit via the chassis CAN.
The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Power supply for transmitter key
When the transmitter key is inserted into the electronic ignition switch control unit, is switches on the inductive power supply to the transmitter key.

Interface to KEYLESS-GO control unit
- Interface to Keyless-Go control module via interior CAN for Keyless-Go access and Keyless-Go operation
- Mechanical sensing and read-in of KEYLESS-GO start/stop button (S2/3) for KEYLESS-GO operation