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


  • 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

Self Study Program 222 – Electronically Mapped Cooling System Design and Function PDF free online