Pulsar L4-1597cc 1.6L SOHC (GA16i) (1990)
Radiator Cooling Fan Motor Relay: Description and Operation
These models use an A/C relay, condenser fan relay, radiator fan relay, dual pressure switch and thermoswitch to operate the condenser and radiator
fans.
When the coolant temperature rises above a predetermined temperature, the thermoswitch contacts will close, turning on the radiator cooling fan.
When the coolant temperature drops below a predetermined temperature, the thermoswitch contacts will open, turning off the radiator cooling fan.