What does a blower motor transistor do?
This controls the current that runs through the blower motor. Each fan speed selection is connected to one or more of the resistors in the blower resistor assembly. The change in resistance controls the current through the blower motor, which in turn limits the speed that the blower motor spins at.
How do I test a blower motor resistor?
Place one lead of the Ohmmeter on terminal 1 of the resistor. Place the other lead on terminal 2 and check against specifications. If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced. Move the lead from terminal 2 to terminal 3 and check this reading against specifications.
When should I replace my blower motor resistor?
What Are Common Symptoms Indicating You Need to Replace the Blower Motor Resistor?
- Blower motor not working at all.
- Blower motor only working on one speed, and inoperative on the other speeds.
What’s the Honda Honda rear blower motor power transistor size?
Honda OEM replacement Rear Blower Motor Power Transistor fits 2003 to 2008 Pilot EX, EX-L. OEM transistor design and material specifically formulated by Honda engineers, for Honda automobiles. 1 year warranty on part. honda Honda 12.6 ounces 7 x 5.9 x 4.8 inches 79330-S3V-A51 No 79330-S3V-A51 79330-S3V-A51
Is my Honda Civic blower motor power transistor bad?
If the resistance IS NOT within specification, we can conclude your Honda Civic’s blower motor power transistor is bad and needs to replaced. Now, if the resistance is within specification, then we need to continue on to the next test (which is testing the power transistor diode). OK, to get this show on the road, here are the test steps:
What is a blower motor power transistor?
The blower motor power transistor is commonly referred to as the blower motor resistor when in the true technical sense it isn’t a resistor. This is due to the fact that the blower motor power transistor does pretty much the exact same job as the old style resistors of vehicles of the 80 and 90’s. What job?… Vary the blower motor fan speed.
Why is my blower motor not working on my Honda?
This is due to the fact that the power transistor depends on the blower motor to function and starting your diagnostic with the power transistor, instead of the blower motor, could have you replacing parts your Honda doesn’t need. The following tutorial will help you test the blower motor in an easy step-by-step manner: