Use of switches/sensors

[supratoyboy]

Hi, does anyone know what the switch at the bottom of the radiator is for, my car used to be auto so might be for the auto cooler? Also does anyone know what the sensor/switch just above waterpump is for?

 

[tissimo]

The sensor at the radiator is for the hydro fan, its a temp sensor for the hydro fan ecu.

The switch at the waterpump is probably the hydro fan pump solenoid.

 

[tlo86]

is it the same one right next to the alternator? i just looked at a plug and i couldnt figure out what it was for offhand because the wires were cut off after a few inches heh

 

[tissimo]

is it the same one right next to the alternator? i just looked at a plug and i couldnt figure out what it was for offhand because the wires were cut off after a few inches heh

With the 2jz, it might be the stock twin VSVs