Electronic Ignition Lock Control Unit, Component Description - GF80.57-S-6001TRA

Model 447.6/7/8 

except code XM0 (Facelift) 

except code XM7 (MOPF II) 

Model 448 

except code XM7 (MOPF II) 

Location 

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

Task 

The electronic ignition lock control unit (EZS) has the following tasks:

• Central gateway (interface between Controller Area Network (data/bus/CAN Bus) (CAN) and serial bus (serial bus)) 
• Reading in of signals 
• Evaluation of input factors 
• Output of signals 
• Power supply of the transmitter key (A8/1) and data exchange with the transmitter key 

Central gateway (interface) 

The processor for controlling the central gateway functions also acts as an interface between the following data bus systems:

• Interior CAN (CAN B)
• Diagnostic CAN (CAN D)
• Chassis CAN (CAN E)
• Front end CAN (CAN G)
• Serial bus (Serial bus)

Reading in of signals 

The input factors are read in via the following connections:

• Direct line 
• Interior CAN 
• Diagnostic CAN 
• Chassis CAN 
• Front end CAN 
• Serial bus 

Direct line 

The following signals are read in via a direct line:

• Terminal 30
• Circuit 30b (emergency battery supply) (with transmission 722.9,)
• Status of left front door rotary tumbler microswitch (M14/3s1) in left front door central locking actuator (M14/3)
• FM, AM antenna amplifier (A2/18)

Interior CAN 

The signals are read in by the electronic ignition lock control unit (EZS) via the interior CAN. 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 by the electronic ignition lock control unit (EZS) via diagnostic CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Chassis CAN 

The signals are read in by the electronic ignition lock control unit (EZS) via chassis CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Front end CAN 

The signals are read in by the electronic ignition lock control unit (EZS) via front area CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Serial bus 

The signals of the electric steering lock control unit (N26/5) are read in by the electronic ignition lock control unit (EZS) via serial bus. 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 

Signals are output via the following lines:

• Direct line 
• Interior CAN 
• Diagnostic CAN 
• Chassis CAN 
• Front end CAN 
• Serial bus 

Direct line 

Emergency path actuation (with transmission 722.9,)

Interior CAN 

The signals are transmitted by the electronic ignition lock control unit (EZS) via the interior CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Diagnostic CAN 

The signals are transmitted by the electronic ignition lock control unit (EZS) via the diagnostic CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Chassis CAN 

The signals are transmitted by the electronic ignition lock control unit (EZS) via the chassis CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Front end CAN 

The signals are transmitted by the electronic ignition lock control unit (EZS) via front area CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Serial bus 

The signals are transmitted by the electronic ignition lock control unit (EZS) to the electric steering lock control unit via serial bus. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Power supply of transmitter key and data exchange with transmitter key 

When the transmitter key is inserted into the electronic ignition lock control unit (EZS), it switches on the inductive power transmission (power supply to the transmitter key). Encrypted data is exchanged via infrared signals between the transmitter key and the electronic ignition lock control unit (EZS) for identification of the transmitter key.

	Electric wiring diagram for electronic ignition lock control unit (EZS)	Model 447 except code XM0 (Facelift) except code XM7 (MOPF II)	PE54.21-S-2104-97VVA
		Model 448 except code XM7 (MOPF II)	PE54.21-S-2104-97VDA
	Overview of system components for theft protection and locking	Model 447.6/7/8 except code XM0 (Facelift) except code XM7 (MOPF II) Model 448.7/8 except code XM7 (MOPF II)	GF80.00-S-9999TRA