How can I repair my blower motor resistor?
Using an ohmmeter, check for continuity between all of the blower motor resistor terminals. In each case there should be continuity. If OK, repair the wire harness circuits between the blower motor switch and the blower motor resistor or blower motor as required. If not OK, replace the faulty blower motor resistor.
What causes a blower motor to not work?
If the blower motor resistors’ internal components fail it may cause the blower motor to malfunction, or not function at all on one or more of the settings. This can also be caused by a blower motor switch, so a proper diagnosis is highly recommended if you are uncertain of what the issue may be.
How to troubleshoot your furnace blower motor fan?
A third quick and simple troubleshooting step for your furnace blower motor is to make sure the filters and vents are clean and free of dust and debris. To do this, go to each of your home vents and ensure they are open and clear. Next check the cold air return filter for dirt or dust build up.
How to check if the blower motor belt is the issue?
To check if the blower motor belt is the issue, first ensure that the furnace door is fully closed properly, as the furnace will not work if the door is open due to a switch on the inside of the furnace door. Locate and turn off the main circuit breaker or safety switch for the furnace, to ensure there is no power going to it.
Why is my blower motor switch not working?
Double check that you’re testing the correct blower switch terminals and retest. If continuity is not present where indicated in the test steps above and this lack of continuity coincides with the blower fan speed that’s not working on your Ford Explorer then you’ve found the cause of the problem.
What should the continuity be on a blower motor switch?
Check out my recommendation: Buying A Digital Multimeter For Automotive Diagnostic Testing (found at: easyautodiagnostics.com ). With the blower switch knob set to the M1 position . You should have continuity between 2 and 3 (this should be at or less than 5 Ohms). With the blower switch knob set to the M2 position .
What should I do if my blower motor stops?
Replace blower motor. If you have a variable speed blower motor, replace the blower motor speed control module. If you have a three or four speed blower motor, remove the blower motor relay. If the motor stops, replace the relay. Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period.
How can I test the blower motor switch?
This is good and is the correct and expected test result that tells you that the blower fan switch (in the A/C-Heater control panel) is NOT defective. Your next step is to bypass the blower resistor using a simple jumper wire. For this test go to: TEST 2: Using A Jumper Wire To Bypass The Blower Switch.