Sable V6-3.0L VIN U (1999)
Blower Motor Resistor: Description and Operation
Blower Motor Thermal Limiter
The blower motor thermal limiter, used in the heater blower motor switch resistor, performs the following functions:
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It serves as an over temperature protection fuse.
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It is located a predetermined distance away from the resistor coils and in series with the coil circuit.
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It will open the resistor coil circuit when temperature of the thermal limiter reaches 121°C (250°F), interrupting blower motor operation in all
speeds except HI.
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The spring contacts separate when the wax softens, causing an open circuit in the heater blower motor switch resistor.
