Themostatic switch

[projectgtir]

Hi all , anyone know where this switch is .

 

[Trip]

If its for coolant, the sensor (2 wire) is behind the engine just above the P/S pump. It sends the signal to the ECU and ECU triggers the radiator fans as needed.

 

[projectgtir]

Thanks trip . Seem a diagram for another Nissan which had one in the rad . But we don't have one .
My fans are not coming on . I've sent 12v to them and they work I've checked continuity from pin 1 on the relay to ground and to the fans and there is continuity .
I them swap relays from the fuel pump , car still runs so must have been working . I can't work out why they don't come on apart from air lock. .