3 Series E91 320i (N43) TOUR
•
Reset contact, front
•
Reset contact, rear
The junction box electronics unit controls the following actuators:
•
Wiper relay for wiper stage 1 and 2
•
Wiper relay for rear window
•
Windscreen washer pump relay for headlamp wipe/wash unit
-
Central locking system
The junction box electronics (JBE) is the executing control unit for the central locking system. The junction box
electronics assume the task of actuating all central-locking system drives. The following control combinations
are possible:
•
Selective unlocking
•
Deadlock release
•
Locking
•
Unlocking and deadlock release
•
Deadlocking
The boot lid lock is activated via its own output stage.
[for more information, please refer to SI Technology 61 01 04 072]
-
Climate control
The junction box electronics (JBE) detect the following signals and makes them available to other bus
subscribers:
•
Sensor for automatic air recirculation mode
•
Refrigerant pressure sensor
•
Rear stratification control
The junction box electronics unit controls the following actuators:
•
Auxiliary water pump
•
Control valve for air-conditioning system or magnetic coupling
•
Water valve (depends on engine equipment)
[for more information, please refer to SI Technology 64 01 04 090]
-
Seat heating
A seat heating module or the more advanced driver's seat module can be fitted for the seat heating. A seat
module is always fitted with seat memory.
The junction box electronics unit (JBE) sends a request to check whether a seat module has been fitted. If the
junction box electronics unit does not receive a confirmation, the JBE will take over control of the seat heating.
The junction box electronics generate a pulse-width-modulated signal. This signal is used to control the seat
heating module.
If a seat module has been fitted, the seat heating is controlled directly by it.
-
Mirror heating and heated washer jets
The junction box electronics (JBE) control the following actuators:
•
Basic variant of mirror heating
•
SBT Junction box E70, E71, E81, E82, E87, E90, E91, E92, E93
BMW AG - TIS
24.01.2013 22:41
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 3 -