In the late 1990’s, Honda automobiles started using a blower motor power transistor to control the speeds of the blower motor instead of the traditional blower motor resistor. Now, when the blower motor power transistor fails, the air conditioning (A/C) compressor will become inoperable. When the blower motor does not operate on later model A/C systems, the heater control panel will set a code which in turn shuts off the request for A/C compressor operation.
Tags: Air conditioning, Service bays, Technicians, Underhood service