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Home >> Mercury >> 2002 >> Villager Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 419 (HVAC System - Control Components -- F150 Pickup) >> Description And Operation >> Control Components >> Electronic Automatic Temperature Control >> Control System Outputs >> Temperature Blend Door Actuator
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Temperature Blend Door Actuator

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

An electric temperature blend door actuator is used to position the temperature blend door. The temperature blend door actuator contains a reversible electric motor to position the temperature blend door. A potentiometer is installed in the actuator to allow the EATC module to monitor the position of the temperature blend door. The potentiometer circuit consists of a 5-volt reference signal connected to one end of a variable resistor, and a signal ground connected to the other. A signal return circuit is connected to a wiper which is driven along the variable resistor by the actuator shaft. The signal returned to the EATC module from the wiper indicates the position of the temperature blend door.

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