Cooling System: Description and Operation
FansHow the Circuit Works
Battery voltage is provided at all times to the radiator fan relay contacts through fuse 11 and to the A/C condenser fan relay contacts through fuse 9. With the ignition switch in ON (II), battery voltage is provided to the coils of the relays through fuse 30.
Both relay coils are grounded by either the radiator fan switch or by the ECM/PCM. Grounding the relays energizes their coils, which applies battery voltage to the radiator and A/C condenser fan motors. The fans will run until ground is removed from the relay coils.