The blower motor is randomly working. While searching for a solution, I jiggled the wires under the dash and that seemed to help slightly. Even after the dealership replaced the motor, still had the same problem. It’s a 3-terminal motor and I’m assuming it has on-board transistor diode pair of PWM operation. Is it a N-channel or P-channel FET and would tying the transistor gate to one of the other pins turn the motor to full blast?
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing