Heater Blower Motor Switch Resistor(s)
WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
The front heater blower motor switch resistor has the following features:
- The assembly is located in the engine compartment on the evaporator housing (19850) next to the blower motor assembly (19805).
- Three resistor elements are mounted on the resistor board to provide four blower motor speeds.
- Depending on the heater blower motor switch position, series resistance is added or bypassed in the A/C blower motor circuit to decrease or increase A/C blower motor speed.
- An overheating device (thermal limiter) will open the resistor coil circuit when the temperature reaches 121°C (250°F), interrupting the blower motor operation in all speeds except high.
- The thermal limiter cannot be reset and is not serviceable.
The second row heater blower motor switch resistor has the following features:
- The assembly is located in the high-series flow-through floor console next to the blower motor assembly (19805).
- There is one resistor element are mounted on the resistor board to provide two blower motor speeds.
- Depending on the heater blower motor switch position, series resistance is added or bypassed in the A/C blower motor circuit to decrease or increase A/C blower motor speed.
- An overheating device (thermal limiter) will open the resistor coil circuit when the temperature reaches 121°C (250°F), interrupting the blower motor operation in all speeds.
- The thermal limiter cannot be reset and is not serviceable.