Heater Blower Motor Switch Resistor(s)

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.