Mechatronic Solenoid Valves (MV), Electronic Pressure Control Valves (EDS)

The mechatronic system (electronic module and hydraulic unit) has various solenoid valves and electronic pressure control valves.

Functional description, see BMW Technology:

TIS -> Document -> SI Technology -> SBT Number

• 2401 03 040
  

Brief description of components (solenoid valves)

The solenoid valves are 3/2-way valves, i.e. valves with 3 connections and 2 switch positions.

Brief description of components (electronic pressure actuators)

The EDS convert electric current into a proportional hydraulic pressure and thus activate hydraulic valves with their corresponding switch elements.

Three types of EDS are fitted:

• EDS with rising characteristic curve (orange cap)
  Pressure range 0 to 4.7 bar
  Power supply 12 Volt
  Resistance 5.05 Ohm (at 20 °C)
  
• EDS with rising characteristic curve (yellow cap)
  Pressure range 0 to 4.6 bar
  Power supply 12 Volt
  Resistance 5.05 Ohm (at 20 °C)
  
• EDS with falling characteristic curve (blue cap)
  Pressure range 4.6 to 0 bar
  Power supply 12 Volt
  Resistance 5.05 Ohm (at 20 °C)
  

Mechatronic calibration following repairs

If the Mechatronic has to be replaced in the course of repairs, it must be labeled as a replacement Mechatronic using the service function ”Mechatronic calibration”.

After replacement of the entire transmission, the service function does not have to be run, as the transmission is already fully calibrated on delivery.

In all cases, it is advisable to delete stored adaptation values.