Component Description For The Electronic Ignition Lock Control Unit - GF80.57-P-6001GN
Model 166
as of Model year 2016
Model 292
Shown: Model 292
Location
The electronic ignition lock control unit is located on the right, next to the steering column.
Tasks
The electronic ignition lock control unit has the following tasks:
- Central gateway (interface CAN)
- Global variant coding
- Reading in of signals
- Evaluation of input factors
- Output of signals
- Power supply and data exchange with transmitter key (A8/1)
Central gateway (interface CAN)
The electronic ignition lock control unit is the central interface for the vehicle electronics and is connected to the following bus systems:
- Interior CAN (CAN B)
- Diagnostic CAN (CAN D)
- Chassis CAN 1 (CAN E1)
- Chassis CAN 2 (CAN E2)
Global variant coding
The electronic ignition lock control unit transmits global information such as Model series and national version to the interlinked control unit via various CAN buses. The control units perform part of their configuration process to match this information.
Reading in of signals
Signals are read in via the following connections:
- Infrared
- Direct line
- Interior CAN
- Diagnostic CAN
- Chassis CAN 1
- Chassis CAN 2
Infrared
When the transmitter key is inserted, encrypted data is exchanged via infrared signals between the transmitter key and the electronic ignition lock control unit for identification of the transmitter key.
Direct line
The following signals are read in via direct lines:
- Circuit 30 (emergency battery supply)
- Status of left front door safety catch microswitch (A85s1)
- Access authorization code for transmitter key via FM 1, AM, CL and KEYLESS-GO antenna amplifier (A2/18) (without CODE 889 (KEYLESS-GO) and without CODE 893 (KEYLESS-GO start function))
Interior CAN
The electronic ignition lock control unit reads in the following signals to control the central locking:
- Requests to unlock or lock the central locking, which can be operated from various control points
- Access authorization code for transmitter key on vehicles with CODE 889 (KEYLESS-GO) or with CODE 893 (KEYLESS-GO start function)
- Status of left front door safety catch microswitch
- Status of right front door safety catch microswitch (A85/1 s1)
- Status of left rear door safety catch microswitch (A85/3s1)
- Status of right rear door safety catch microswitch (A85/4s1)
- Status of liftgate rotary tumbler switch (M14/7s1)
- Status of liftgate locking pawl switch (M14/7s2)
- Status of tank cap central locking actuator (M14/10)
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Diagnostic CAN
The signals are read in from the electronic ignition lock control unit via diagnostic CAN. As central interface for the vehicle electrical system, the electronic ignition lock control unit allows data exchange between vehicle control units and external diagnosis equipment.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN 1
The signals are read in by the electronic ignition lock control unit via the chassis CAN 1.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN 2
The signals are read in by the electronic ignition lock control unit via the chassis CAN 2.
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.
Output of signals
The signals are issued over the following connections:
- Direct line
- Interior CAN
- Diagnostic CAN
- Chassis CAN 1
- Chassis CAN 2
Direct line
The following component is actuated via a direct line:
- Intelligent servo module for DIRECT SELECT (A80) (emergency path)
Interior CAN
The electronic ignition lock control unit transmits the following signals to control the central locking:
- Circuit 15 status
- Central locking system unlock request
- Request for locking central locking
- Variant coding
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Diagnostic CAN
The signals are sent from the electronic ignition lock control unit via diagnostic CAN. As central interface for the vehicle electrical system, the electronic ignition lock control unit allows data exchange between vehicle control units and external diagnosis equipment.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN 1
The signals are transmitted to the electronic ignition lock control unit via the chassis CAN 1.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN 2
The signals are transmitted to the electronic ignition lock control unit via the chassis 2.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Power supply and data exchange with 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. Encrypted data is exchanged via infrared signals between the transmitter key and the electronic ignition lock control unit for identification of the transmitter key.
| Wiring diagram for electronic ignition switch (EIS) control unit | PE54.21-P-2104-97NBA |