Self Study Program 221 – Electronic Manual Gearbox

VAG SSP 221. Taking the Lupo as the basis, Volkswagen has developed the world’s first 3 L car that will also go into volume production. Designing a vehicle which covers 100 km on 3 litres of fuel involved a great deal of detail work.

Factors influencing fuel consumption – such as aerodynamics, rolling resistance, engine concept, gearbox tuning and kerb weight – have been revised systematically.

The goal was achieved by using new technologies, weight-saving materials and new  production  processes.

However, the driver also plays a key role with regard to fuel economy. A great many drivers are not aware of this fact, though.

The new electronic manual gearbox eliminates gear shift errors. Gear shifts are executed automatically and in such a way as to optimise fuel consumption.

The advantages of an electronic manual gearbox over an automatic gearbox are lower weight and higher efficiency.

CONTENTS

• General information
  • The electronic manual gearbox
• Mechanicals
  • General information
  • The selector lever
• Hydraulics
  • System representation
  • The hydraulic clucth control
  • The selector gate selection
  • The gear selection
  • The pressure control
  • The hydraulic pump
  • The clutch slave cylinder
• Electronics
  • System overview
  • The sensors
  • The actuators
  • The gearbox control unit
  • The stop/start function
  • Function diagram
  • The self-diagnosis
• Test your knowledge

The Self-Study Programme is not a Workshop Manual.
Please always refer to the relevant Service Literature for all inspection, adjustment and repair instructions.

Language: English
Format: PDF
Pages: 56

Self Study Program 221 – Electronic Manual Gearbox Design and Function PDF free online