Testing your Ford vehicle's blower motor resistor to see if it's fried (or not), can be done with a set of simple multimeter continuity tests. It's located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. To further help you in diagnosing the blower resistor, you'll see the specific resistance values I got testing a good working blower motor resistor here: Blower Resistor Continuity Specification Tables. Place two large straight pins in the plug of the blower motor but leave the blower motor plugged in. Jeep  |   I leave dental floss in the kitchen and watch the roaches hang themselves." You can find the blower motor test here: How To Test The Blower Motor (1992-1994 3.0L Ranger). Suzuki  |   Are the coils in one piece? Here are some tips on how to test a blower motor resistor: Start by looking for the blower fan resistor. On speeds 1-3 the ground is re-routed through the resistor pack and on high speed it bypasses the resistor pack and the motor gets full voltage. 2.00/ 5.0 4. Misc Index  |   These resistance tests are also known as continuity tests and are done with your multimeter in Ohms mode (Ω). I have a 2014 Ford Explorer limited edition. There is a video on the net on how to test the resistor, but you need a multi-meter to check. En Español  |   These resistance tests are also known as continuity tests and are done with your multimeter in Ohms mode (Ω). Probe terminals 4 and 3 with your multimeter test leads (see image 3 of 4 in the image viewer). This simply involves testing the resistance of the resistor across all of its metal terminals with a multimeter in Ohms mode. Second, check to see if there is any power at the blower motor. Didn't work. GM  |   3. This simply involves testing the resistance of the resistor across all of its metal terminals with a multimeter in Ohms mode. But, my suggestion to you is to perform the next test if you're still having blower motor fan issues. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse. This test also test the continuity of the blower resistor thermal fuse. Here's the breakdown: The one blower motor speed that doesn't depend on the blower motor resistor assembly is HI since the blower motor switch accomplishes this speed by completely bypassing the blower motor resistor assembly. Brand #: HVA00998. IMPORTANT: There's a good chance that you won't see the exact same resistance values I've listed above (on your multimeter). This is why at the bottom of the article we include a 2008 F150 blower motor wire diagram. When the control knob on the dash is turned to produce an increase or decrease in air flowing into the cabin, the blower motor resistor adjusts the power sent to the blower motor. Insert a screwdriver approximately 0.2 inch (5mm) under the edge of the resistor assembly to disengage it from the evaporator housing. Chrysler  |   If it does not work, then the motor is bad. Check for full airflow at the vents. Ford  |   Yes. NOTE: Even though this tutorial is filed in the Ford 4.9L, 5.0L, 5.8L index of this website... it applies to quite a few Ford vehicles. CASE 2: All circuits tested had continuity where indicated in the test steps. Please keep in mind Just Answer is set up on an honor system, I have sent the information you have requested, and if the answer has been helpful then Please don't forget to click on the ACCEPT button, so that I … Decreased airflow causes the blower motor resistor to overheat and fail. If it works, it should blow on high. Basics Of Troubleshooting The Blower Control Resistor. There's a good chance that you'll need to remove it from its place to easily test its continuity. 4. This material may not be reproduced without the author’s consent. Saturday, December 25th, 2010 AT 8:12 PM. My heat/blower wouldn't work on low, then the two mediums copped out, and I'm left with only high. If the blower resistor assembly is OK then you should see continuity between them. Blower motor works in some speeds, but NOT all speeds. Check out my recommendations here: Buying A Digital Multimeter For Automotive Diagnostic Testing. Full blast, or no blower at all. With that said, failed blower resistor assemblies don't solve all of the possible failures. We currently carry 4 Blower Motor Resistor products to choose from for your 2013 Ford F-150, and our inventory prices range from as little as $23.99 up to $114.51. Many blower resistors control current to the blower motor in all speeds except high. And boy does the blower resistor get hot. In high speed the resistor is bypassed and power is fed to the motor directly from the switch. Now to be a bit more specific, to achieve LO or M1 or M2 blower motor speeds... the blower motor switch is the component responsible for rerouting the blower motor's current through a specific combination of these resistors (within the blower motor resistor assembly). When it comes to your Ford F-150, you want parts and products from only trusted brands. How do you test the blower motor resistor in a 2001 ford focus se? Let's take a look at what your test results mean: CASE 1: One or more of the resistors you tested DID NOT have continuity. It's this reduction in current that makes the blower motor turn slower than full speed (HI). Puedes encontrar este tutorial en Español aquí: Cómo Probar La Resistencia Del Soplador (1992-1994 3.0L Ford Ranger) (en: autotecnico-online.com). The resistor … The blower resistor is normally cooled by the air flowing across it from the blower motor spinning. Blower motor resistor has repeat failures. Honda  |   Check out my recommendation: Buying A Digital Multimeter For Automotive Diagnostic Testing (found at: easyautodiagnostics.com). To get our Ford Ranger's blower resistor diagnostic on the road, we're gonna' test its continuity. This is the correct test result and tells you that the blower resistor is OK (not defective). Honda  |   Compared to the regular Bronco or the optional Sasquatch Package, the test versions appeared taller. Disconnect the blower motor resistor from its electrical connector and remove it from its location. You can stop here if your blower motor resistor passed all of the continuity tests in this test section. 2001 ford sport trac...Heater/defrost blower does not blow when swiched on. Remove the resistor assembly. Disconnect the resistor. I have the only Ford Flex (2012 Limited) in the little African country of Malawi. You test the inputs coming into it to make sure you have a ground signal on a different wire for each speed. All Rights Reserved. This is no cause for concern since the circuit descriptions are the same for all of the Ford vehicles covered by this repair tutorial. Start from as little as $ 22.99 First check the cabin air filter diagnosing blower problems – no settings at! Ford focus se air conditioning system in a car is called a blower assemblies... This website your multimeter test leads ( see image 3 of 4 in the resistor. Escape controls the blower motor resistor uses resistance to control the speed of the possible failures continuity exists all. It should blow on high blower speed has direct power to the motor that runs the fan in plug. With your multimeter to register continuity in the little African country of.! Inside the engine compartment on the road, we 're gon na ' test its.! Good chance that you 'll need to upgrade yours case 2: all circuits tested continuity. All terminals and need to remove it from its place to easily test its continuity this... 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