XJ-6 (X300) L6-4.0L (AJ16) (1996)
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Radiator Cooling Fan Motor: Description and Operation
Cooling pack
The new cooling pack consists of two shrouded electric fans, a twin thermal switch and a series of flaps. The cooling pack mounts to the rear side of
the radiator.
The thermostatically controlled fans are mounted diagonally across the radiator. On the opposite diagonal, the cooling pack shroud has two sets of
rectangular slots closed by rubber flaps. Increased vehicle speed causes the flaps to open under air pressure, thereby providing additional cooling.
Cooling Pack
Fan operation
The fans are driven through the fan control relay module in a series circuit [low speed) or in a parallel circuit [high speed) depending on the need for
engine cooling. The twin thermal switch operates as follows:
^ Series fans ON at 186° F [88.5° C) - increasing temperature
^ Series fans OFF at 173° F [78° C) - decreasing temperature
^ Parallel fans ON at 212° F [100° C) - increasing temperature
^ Parallel fans OFF at 200°F [93° C) - decreasing temperature
The fan control relay module is located in the left front fender adjacent to the charcoal canister. Access to the module is through the fog light access
panel. The twin thermal switch is located at the lower left side of the radiator.
NOTE: The fans are also controlled by the air conditioning refrigerant pressure switches.
Radiator Cooler Couplings
Oil cooler connections to radiator
The radiator couplings for the power steering and transmission fluid coolers are push-on connections that require service tool JD 182 for removal. The
tool fits over the pipe and pushes in to release the coupling.
