Highlander LTD 2WD V6-3.0L (1MZ-FE) (2002)
Radiator Cooling Fan Motor: Description and Operation
SYSTEM OUTLINE
The radiator fan motor and condenser fan motor operates according to the water temp. SW NO.1, water temp. SW NO.2, A/C single pressure SW, and
the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are turned on/off, to operate the fan motors at low speed (In series),
or high speed (In parallel).
LOW SPEED OPERATION
When the A/C system is operated, or the water temp. SW no.2 is turned on, the condenser fan motor and radiator fan motor rotate at low speed.
HIGH SPEED OPERATION
When the A/C single pressure SW is turned on, or the water temp. SW no.1 is turned on, the condenser fan motor and radiator fan motor rotate at high
speed.