Radiator Cooling Fan Temperature Sensor / Switch

A/C Compressor Cycling:
Start Of Pulse (see footnote [3]) 121 - 123° C
Emergency Off 126 - 128° C
Electric Auxiliary Fan:
1st Stage On/Off (see footnote [1])
A/C Pressure 14/12 bar
Coolant Temperature 100/95°C
2nd Stage On/Off (see footnote [2]:
A/C Pressure 20/17 bar
Coolant Pressure 115/107°C

[1]: At refrigerant pressure in bar.
Cut in 1st stage speed responsive: compressor switched on
< 40 km/h on
> 70 km/h off
[2]: At coolant temperature in degrees C.
[3]: Pulse duration: 50% on time, 20 seconds on, 20 seconds off