The blower motor regulator controls the fan speed of the heating and air conditioning system. OEM says problems with the crimp connection and movement of the connector can cause corrosion of the tin-coated regulator pin。
Running the fan on high combined with electrical resistance at the connector can cause over heating and damage to the wiring. The irregular flow of electrical current may cause a short-circuit followed by melting plastic and finally a fire。
This issue involves the wiring for the system – known as the blower motor – that controls airflow for the heating and cooling (air conditioning) system. Over time, and due to a number of contributing factors, the connection between the wiring and this system can degrade.