Self Study Program 222 – Electronically Mapped Cooling System

VAG SSP 222. This Self-Study Programme describes the design and function of this technical innovation. The 1.6-litre 4-cylinder in-line engine (code APF) with a power output of 74 kW is the first engine in which the newly developed

electronically mapped cooling system

will be used. Further engines are in preparation. Load-dependent temperature setpoint input, thermostatic control of coolant temperature and fan cut-in control are the special features of the new system.

The advantages of adapting the coolant temperature to the current operating state are:

• greater fuel economy in the part-throttle range
• reduction of raw CO and HC emissions

CONTENTS

• General information
  • Cooling the engine with water
  • The coolant temperature level
  • Electronically controlled cooling system
• Main components
  • Coolant distributor housing
  • Coolant control unit
• Cooling circuit
  • Small cooling circuit
  • Large cooling circuit
• Electrical function
  • System overview
  • Simos 3.3 engine management system
  • The coolant temperature sender
  • Thermostat for mapped engine cooling F265
  • Electrical cooling fan activation
  • Function diagram
• 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: 28

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