Logic of naming sensors in VW-group is simple it contains "G" (german "Geber") + sensor number. The sensor number is unique. Here you can find fitting location, connectors and pins description, some information about sensors signals.
To our mind, sensors information is reference, so there is only simple search by sensor number.
The temperature sensor
-G18 is installed directly on the additional heater control unit -J364 and
cannot be replaced separately.
A fixing presses the
temperature sensor -G18 against the burner housing, producing pre-tension which
transfers the heat.
JThe cover and frame of
additional heater control unit J364 and the burner housing are mutually sealed
with shaped gaskets. These connections must be absolutely tight and are
therefore checked for tightness during production. As this check cannot be
carried out by the Service Department, the fastening screws of the control unit
cover must not be unfastened. This is also why the additional heater control
unit -J364 cannot currently be replaced as a single component.
heater; Rep.Gr. 82; Auxiliary/additional heater circuit diagram