300E (124.030) L6-3.0L (103.983) (1986)
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Condenser Fan: Description and Operation
Auxiliary Fan Location
PURPOSE
The auxiliary cooling fan, which is located in front of the A/C condenser, provides additional air flow across the condenser and radiator to assist during
periods of high thermal load.
Relay Location
OPERATION
Auxiliary fan activation takes place in two stages:
^
Low speed is activated by the dual function pressure switch in the receiver drier at approx. 290 psi (20 bar), via relay K10 and a pre-resistor.
^
High speed is activated by the 105/115°C temperature switch at an engine coolant temperature of approx. 221°F (105°C) via relay K9. When the
pressure or temperature drops below preset values, fan operation discontinues.
