(Fully Integrated Transmission Control Electrohydraulic Controller Unit, Basic Function - GF27.19-P-2003A)

Model all with transmission 724.0/1 

Overview 

This document contains information on:

• General 
• Function 

General 

The fully integrated transmission control electrohydraulic controller unit determines the actual status of the vehicle and controls all gear change sequences depending on the ease of shifting and the driving situation.

An independent vehicle diagnosis system is integrated into the fully integrated transmission control electrohydraulic controller unit.

Function 

The fully integrated transmission control electrohydraulic controller unit evaluates incoming signals and requests, forwards them to participating control units or actuates internal actuators.

The following components are integrated into the fully integrated transmission control electrohydraulic controller unit and they are read out or actuated directly:

• Electric auxiliary oil pump
• Switchover and regulation valves:
  • Gear control regulation valves
  • System pressure control valve
  • K1/K2 clutch regulation valves
  • Gear cylinder pressure regulation valves
  • Park pawl switchover valve
• Complete transmission sensor system (consisting of rpm, temperature, pressure and position sensors)
• Transmission control control unit

Flash programming 

The transmission control in the fully integrated transmission control electrohydraulic controller unit is flashable. The complete software in the control unit can be replaced using Xentry Diagnostics.