1988 Nissan Stanza sedan:

The radiator fans do not operate, causing the engine to overheat. The dashboard display gauge indicates the temperature of the engine as over heating. What are the likely causes of this failure, and what should i try?

Thanks,
Dan

Swapped out the fan relays and the fuses individually. The fans work when connected to a battery and the return radiator hose is hot. Could it be the Thermostatic fan control switch?

if you can get the fans to turn on with battery power and the fuse and relay are fine then the only thing left is the fan control switch