TT Quattro Coupe L4-1.8L Turbo (BEA) (2003)
Radiator Cooling Fan Control Module: Testing and Inspection
Vehicles With A/C Pressure Switch - F129 -
Coolant Fan Control (FC) Module -J293- (Vehicles With A/C Pressure Switch -F129-), Electrical Testing
Terminal assignments at -J293- (vehicles with -F129-)
Location: In engine compartment on left long member.
Function:
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Activates coolant fan(s) -V7- (speeds 1 and 2)
-
Activates A/C clutch -N25-.
NOTE: The function of -J293 and vehicle wiring layout will vary depending on whether vehicle is equipped with A/C pressure switch -F129 or high
pressure sensor -G65-.
Terminal assignments and switching conditions (A/C pressure switch -F129-)
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Switch between terminals -1- and -2- opens if there is excess pressure or insufficient refrigerant system pressure (A/C clutch -N25- is disengaged).
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Switch between terminals -3- and -4- closes when refrigerant system pressure rises (coolant fan(s) -V7- switched to speed 2).
Switching conditions - Coolant Fan Control (FC) Thermoswitch -F18/- F54
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-F54 between terminals 1 and 2: Closes at approx. 95 °C (-V7- switched to speed 1).
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-F18 between terminals 3 and 2: Closes at approx. 102 °C (-V7- switched to speed 2).
Switching conditions - Engine Coolant Temperature (ECT) Waring Switch -F14-
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Switch opens at approx. 118 °C - compressor is switched off.
NOTE: -F14- is only installed on vehicles with A/C pressure switch -F129-.
Test step 1 - Voltage supply, Ground (GND) supply