The Heating And Air Conditioning System - Volkswagen PASSAT - YEAR 2001 Manual

The Electrics

The heating and air conditioning system

The Climatronic air conditioning system has been
provided with an additional temperature sensor,
as compared to the previous model.
The temperature sensor is built in the air duct on
the outlet side of the evaporator. It is designated
"Evaporator vent temperature sender G263".
This sensor provides the Climatronic control unit
with a continuous stream of data on the air
temperature on the outlet side of the evaporator.
Climatronic has an additional new feature:
The Climatronic control unit receives a signal
from the wiper motor. When the wiper motor is
running, blower output and temperature are
raised slightly so as to avoid windscreen fogging.
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Climatronic control unit
(behind the operating unit)
Evaporator
Signal from temperature sensor
to control unit
Windscreen wiper system