General Module V (ZKE)

General module of ZKE V
The general module of the central body electronics ZKE V controls the following functions:

     Windshield wipe and wash
     Headlight washer
     Power windows
     Central locking
     Antitheft Alarm System
     Interior lighting
     Load deactivation
     Remote control
    Additional as of diagnosis index 42 or 52 (deployment as of 03/2003):
        Mirror memory, mirror heating and folding mirror

Two versions of the general module are available:

     High version (full equipment)
     Low version (without rear power windows)

Versions of the general module
The following development stages exist for the general module:

    General module with diagnosis index 40 (High version) or 50 (Low version) Deployment up to 09/2002

    General module with diagnosis index 41 (High version) or 51 (Low version) Deployment as of 09/2002

    Redesign version with the following changes:
    Revised hardware
    Output for interior lights clocked to balance our electrical system fluctuations
    Additional output for consumer shutdown VA2 for control modules
    Rain sensor can switch to wiper stage 2
    Adaptations to E85 Z4 and E83 X3

General module with diagnosis index 42 (High version) or 52 (Low version) Deployment as of 03/2003
     Same as redesign version but additionally with LIN bus for mirror function and for a central switch block
     Control of the mirror functions: Mirror memory, mirror heating and folding mirror
     Saving the mirror position in mirror memory

Power supply

Electronics
The voltage for the general module electronics is supplied via the 54-pin plug connector pin 10 (terminal 31) and pin 47 (terminal 30).

Load circuits
The load circuits of the consumer loads connected to the module are powered via the 15-pin plug connector.

     Pin 1: Terminal 30 for interior lights, wash pump, trunk lid release and lights, load cutout.
     Pin 8: Terminal 30 for front power window drives.
     Pin 9: Terminal 30 for central locking drives.
     Pin 10: Terminal 30 for rear power window drives or electrically-operated vent windows.
     Pin 15: Terminal 31 for central locking drives and power window drives.

K-bus

General
The general module is connected via the K-bus to other control modules. The general module receives and transmits data via the K-bus.

Among other things, the general module receives the following data via the K-bus:

     Ignition lock position (status of terminals R and 15)
    Windshield wiper interval time from rain sensor
    Side lights (terminal 58) switched on
    Crash detection by airbag control module
    EWS status (key inserted, key valid, etc.).

Diagnosis
In addition, diagnosis with the general module also takes place via the K-bus.

The diagnostic telegrams are routed from the diagnostic tester via the RxD link to the instrument cluster. From here the data are transferred via the K-bus to the general module.

Diagnostic data sent by the general module are routed via the K-bus, instrument cluster and RxD link back to the diagnostic tester.

LIN bus
On general modules as of 03/2003 (diagnosis index as of 42 or 52), an additional LIN bus is connected to the module (LIN = local interconnect network). The door mirror and a switch block for mirror and power window adjustment can be connected to the LIN bus.

Terminal R

General
The status of terminal R is registered both via the K-bus as well as via a separate line. This enables operation of ”terminal R-dependent” functions (e.g. windshield wipers) even when the K-bus is faulty.

Encoding

General
Many functions of the general module are adapted by means of coding data to components dependent on options as well as different country-specific requirements.

After replacement, it is therefore necessary to encode the general module by means of the encoding program.