Component description for the electronic ignition lock control unit

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

P80.57-2225-04

Tasks

The electronic ignition lock control unit has the following tasks:

 Reading in of signals

 Evaluation of input factors

 Actuation of components

 Power supply for transmitter key (A8/1)

 Interface to KEYLESS-GO control unit (with code (889) KEYLESS-GO)

Reading in of signals

The input factors are read in via the following connections:

 Direct line

 Interior CAN (CAN B)

 Chassis CAN (CAN E) to 29.02.2016 or chassis CAN 1 (CAN E1) as of 01.03.2016

Direct line

The electronic ignition lock control unit reads in the following signals via direct lines:

 Terminal 30

 Circuit 30z

 Circuit 31

 Data line to electric steering lock control unit (N26/5) (bidirectional)

 The KEYLESS-GO start/stop button (S2/3) is registered mechanically and read in.

Interior CAN

The signals are read in by the electronic ignition lock control unit via the interior CAN.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Chassis CAN / chassis CAN 1

The signals are read in by the electronic ignition lock control unit via the chassis CAN (up to 29.02.2016) or chassis CAN 1 (as of 01.03.2016).

The functions that use these signals are described in the individual 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.

Actuation of components

Components are actuated with the following lines:

 Direct line

 Interior CAN

 Chassis CAN (up to 29.02.2016) or chassis CAN 1 (as of 01.03.2016)

Direct line

The following components are actuated via a direct line:

 Circuit 30 to electric steering lock control unit (locking voltage)

 Serial data line to electric steering lock control unit

Interior CAN

The signals are transmitted to the electronic ignition lock control unit via the interior CAN.

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Chassis CAN / chassisCAN 1

The signals are read in by the electronic ignition lock control unit via the chassis CAN (up to 29.02.2016) or chassis CAN 1 (as of 01.03.2016).

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Power supply for transmitter key

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

Interface to KEYLESS-GO control unit (with code (889) KEYLESS-GO)

The electronic ignition lock control unit forms the interface to the KEYLESS-GO control unit via the interior CAN for the KEYLESS-GO access and KEYLESS-GO operation. The KEYLESS-GO start/stop button (S2/3) inserted into the key opening, is read in directly by the electronic ignition lock control unit.