10
E90 General Vehicle Electrical
Primary Control Modules
Functions of Junction Box Electronics Control Module
The Junction Box Electronics Control Module (JBE) serves as:
• Gateway Module for vehicle Bus System (provides a pass-through function for
F-CAN)
• Evaluator & transmitter of sensor data for Kombi such as Engine Coolant Level,
Washer Fluid Level, Fuel Level, Hand Brake Contact (evaluated data is transmitted
on to the Instrument Cluster)
• Evaluator & transmitter of sensor data for IHKA such as Automatic Recirculation Air
Control, Coolant Pressure (evaluated data is transmitted on to the IHKA module)
• Activator of Compressor Valve and Rear Window Defogger (activation control data is
transmitted from IHKA module)
• Controller of Wipe/Wash functions, Heated Washer Jets, Seat Heating, Mirror
Heating, Water Valve, Relay 30g_f, Rear Power Windows, Rear Window Sun Shade
• Locking & Unlocking of complete vehicle
• Pass-through for Outside Temp Sensor