Sorry, the last 2 digits are 76 not 12, VF32AHFXU44664076.
Okay that means the car has a 1.1 litre petrol engine (TU1JP) with a 5 speed gearbox -206 5 DOOR SALOON 1.1 i (TU1JP) Manual gearbox 5
I have attached some diagrams relating to the cooling on your engine.
The first diagram is the schematic of the cooling system:
Block 4005 is the cooling sensor
Block 1320 is the engine ECU
Block 1510 is the cooling fan
Block 1500 cooling fan relay
Block BM34 engine fuse box
Block BSI1 Built In System Interface (cabin fuse box)
Block 1630 Automatic gearbox - not applicable to your car
Block C001 Diagnostic connector
The second diagram shows that the temperature sensor connects to pins E4 and D4 of the engine ECU 32 pin black connector.
To check the wiring you need a multimeter.
The instructions are:
Open the drivers window for access
Open the bonnet
Turn everything off, remove the key and shut the doors (no need to lock them)
Wait at least 3 minutes and then disconnect the battery
Remove the 32 pin black plug from the ECU amd measure the resistance between pins E4 and D4 of the plug. The plug pins should be numbered. The resistance needs to be between 2000 to 5000 Ohms. If the resistance is close to 0 Ohms it means there is a short circuit.