Mustang Cobra V8-281 4.6L DOHC VIN V MFI (1997)
Blower Motor Resistor: Description and Operation
Blower Motor Thermal Limiter
The thermal limiter, used in the heater blower motor switch resistor, performs the following functions:
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It serves as a temperature protecting 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 that separate when the wax softens causes an open circuit in the heater blower motor switch resistor.
