Cooling System: Description and Operation
How the Circuit WorksPremium and Type S - A/T
Voltage is provided at all times to the radiator fan relay contacts through fuse 57 and to the condenser fan relay contacts through fuse 58. The radiator fan control module controls power to the coils of the relays.
The radiator fan control module is supplied battery voltage at all times through fuse 13 (in the passenger's under-dash fuse/relay box). When the ignition switch is ON (II), voltage is also supplied to the module through fuses 3 and 6 (in the driver's under-dash fuse/relay box).
Premium
The relays are grounded by either the radiator fan switch A or the PCM.
Type S-A/T
The condenser fan relay is grounded by either the radiator fan switch A or the PCM. The radiator fan relay is grounded by either the radiator fan switch C or the PCM. Grounding the relays energizes their coils and applies battery voltage to the radiator and condenser fan motors. Both fans then run until ground is removed from the relay coils.
Type S - M/T
Voltage is provided at all times to the radiator fan relay contacts through fuse 57 and to the condenser fan relay contacts through fuse 58. When the ignition switch is ON (II), voltage is also supplied to the coils.
The relays are grounded by either the radiator fan switch A or the PCM. Grounding the relays energizes their coils and applies battery voltage to the radiator and condenser fan motors. Both fans then run until ground is removed from the relay coils.