Monterey V6-4.2L VIN 2 (2004)
Blower Motor Resistor: Description and Operation
ELECTRONIC MANUAL TEMPERATURE CONTROL
Blower Motor Resistor
The blower motor resistor:
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is located on the heater core and evaporator core housing near the blower motor.
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has three resistor elements mounted on the resistor board to provide four blower motor speeds.
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depending on the blower motor switch position, series resistance is added or bypassed in the blower motor circuit to decrease or increase blower
motor speed.
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has an overheating device (thermal limiter) that will open the resistor when the temperature reaches approximately 220°C (428°F), interrupting the
blower motor operation in all speeds except high.
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is serviced as an assembly. The thermal limiter cannot be reset and is not serviceable.