Repair manual

Oil Circulation System
23
Engine With Self-Regulating Oil Pump
The self-regulating oil pump uses two oil pressure
switches — F22 and Reduced Oil Pressure Switch F378.
F378 is located above Oil Pressure Switch F22.
Oil Pressure Switch
One or two oil pressure switches are used, depending
upon whether the engine is equipped with a self-
regulating oil pump. Oil pressure switches are generally
mounted on the oil filter module.
1
2
1000 2000 3000400050006000 7000
14.5 (1)
29 (2)
44 (3)
58 (4)
73 (5)
Engine speed [rpm]
Oil Pressure of 1.8L MPI Turbocharged Engine
(without self-regulating oil pump)
Oil Pressure of 1.8L TFSI Engine
(transversely mounted, without self-regulating
oil pump)
Comparison of Pressure Characteristics
Relative Oil Pressure (psi / bar)
Oil Temperature at 158°F (70°C)
1 Low Pressure Setting
2 High Pressure Setting
Pressure Requirements of 1.8L TFSI Engine
Oil Pressure of 1.8L TFSI Engine (self-regulating)
Example:
Oil Pressure Switch
F22 (2.55 bar)
Reduced Oil Pressure
Switch F378 (0.7 bar)
Oil Pressure Switch
F22 (1.4 bar)
Reference
For information on the design of the oil
filter module, please refer to Self-Study
Program 921703 Audi 2.0 Liter Chain-Driven
TFSI Engine.
Only Oil Pressure Switch F22 is used on engines not
equipped with a self-regulating oil pump. However, this
switch has a different part number (different oil pressures
are measured).
Engine Without Self-Regulating Oil Pump