This illustration shows a typical blower resistor, specifications, and test procedures vary between different manufacturers. It can do this in one of the two ways; both are common in modern vehicles. New Listing GENUINE FORD MOTORCRAFT BLOWER MOTOR RESISTOR MODULE W/ CONNECTORS YH-1827 (Fits: Ford) Brand New. Blower Motor Resistor, Akozon Car Engine Cooling Radiator Fan Motor Switch Blower Resistor OE: 9658508980 for 207 307 308 4.2 out of 5 stars 4 £13.39 £ 13 . Estimated Ship Date: Today. https://aktif.net/en/product-and-services/motor-control-and-braking-resistors/dynamic-braking-resistors. Blower Motor Resistor - Compatible with 2003-2006 Chevy Silverado, Tahoe, Suburban, Trailblazer, … Switch the multimeter to the resistance measuring mode, attach one probe of the multimeter to the common point and use the other probe to measure resistances at other points. It uses resistance to control the speed of the blower motor. Copyright © 2008-2021 O’Reilly Auto Parts v (site-7dd8cd6b44-4dr2w) cv1265 catalog_main. Such relays can be tested by placing a finger on them and switching the fan’s control on and off. Don't have an EEPower account? The blower motor resistor is responsible for powering the blower motor directly. Once the resistor is located and detached, it is often possible to say whether the resistor has burned out or not judging by the physical appearance only. ‘HI’ is the only blower speed that doesn't depend on the blower resistor to function. Many blower resistors control current to the blower motor in all speeds except high. In some older cars, a blower motor resistor was installed on the firewall with the access from under the hood. For the precise location, consult the repair manual for your car’s make and model. Blower resistors are made of several resistors with different resistances. The resistors are all connected to a common point. ACDelco 22807122 - ACDelco GM OE HVAC Blower Motor Resistors. The blower motor resistor is in charge of regulating the speed of the blower motor. Some common locations are near the blower fan motor, under or behind the dashboard, around the passenger footwell etc. A burned out resistor should be replaced by the appropriate replacement from your car manufacturer. The blower motor resistor is really a pack of resistors wired in series. From United States Check the fuse for power on both ends using a multimeter. Find an Automotive Service Professional near you. To do this, switch your multimeter to voltage measuring mode and verify that the voltage difference between the fan’s terminals is 12V. We stock all of the biggest and best brands, including Duralast, Santech and 4Seasons. Clicking from the relay is an indication that the relay is almost certainly working correctly. Autozone is the one-stop shop for the lowest prices on blower motor resistors. Blower Motor Power Transistor Circuit Descriptions. I am studying and working on it, how do you think? A blower fan is connected to the negative battery terminal (also called ground) on one end and to the positive battery terminal through a blower resistor on the other end. When you turn a knob to produce more air flow for heat or cool air, the resistor adjusts the electrical resistance to control the power sent to your blower motor. In this case, it’s best to take the car to a certified auto electrician. Find the blower resistor and detach it from the rest of the circuit. It is responsible for controlling the blower motor’s fan speed. This means that the current running through the blower motor, and thus is speed is controlled by the resistor value. 9 product ratings - GENUINE FORD MOTORCRAFT BLOWER MOTOR RESISTOR MODULE W/ CONNECTORS YH-1827. A blower motor resistor, typically located beneath the passenger side dashboard, contains three resistors, or sets of terminals designed to generate voltage in proportion to electrical current. 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. If any of these resistances show an open circuit (infinite resistance), then the blower resistor needs to be replaced. If your blower motor only works on certain speeds or is stuck on one speed, you may have a problem with the blower motor resistor. ACDelco 22807122 - ACDelco GM OE HVAC Blower Motor Resistors. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor. Since the blower motor and resistor are … In the highest speed state, the blower resistor is bypassed completely and the fan is connected directly to the car’s battery, which allows maximum current … Blower Motor Resistor (1159) HVAC Blower Delay Switch (7) Blower Switch (2) Blower Motor Control Unit (97) Climate Control Module (3) Air Conditioning Relay (1) PRODUCT RATINGS (52) refine search by 5.0 star rating (39) refine search by 4.0 star rating In the off state, the blower motor is disconnected from the power supply. If there is no power present at the fan, suspect a wiring fault. 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Check the status of your The blower motor resistor adjusts the blower motor's speed. The blower motor resistor is an electrical component that is a part of the vehicle's heating and air conditioning system. There are also two additional circuits used for the off state and the highest fan speed state. Standard® offers over 700 blower motor resistors as high-quality replacements that match the OE to ensure top performance. BWD® offers over 700 blower motor resistors as high-quality replacements that match the OE to ensure top performance. In most modern cars, the blower motor resistor or the control module are installed inside one of the ducts in the HVAC system, close to the blower motor. Check the fan relay, if the car is equipped with one. The resistor generally fails because of foreign objects jamming the blower motor fan blade, which causes the resistor to overheat. WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. The lower the resistance of the selected resistor in a pack, the higher the current that flows through the blower fan, and the faster the fan will turn. I congratulate it was a very nice article, but I noticed some deficiencies. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. HVAC Blower Motor Resistor Fits Ford Expedition, Escape, F150, F250, F350 Super Duty, Mustang, Lincoln Mark LT, Mercury Mariner Replaces # 3F2Z-18591-AA, YH-1715 4.7 out of 5 stars 215 $13.99 If you start at the blower motor, and check resistance in the circuit, you will find the problem in no time. If power is present on the fan’s terminals and the fan is not working, the blower fan is defective. Sometimes, only some of the speed settings will be faulty while others might work. At high speed, the resistor is bypassed, and power comes directly from the switch. Blower Motor Resistor, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each. If the appearance is normal, it is necessary to measure the resistance across each individual resistor. When trying to diagnose a blower fan motor, the following steps should be followed: If a car’s blower motor doesn’t work at all, there are several components to be checked in the system: If the fan operates at some speed settings, but doesn’t work at some other speed settings, this means that the blower resistor is faulty and should be replaced: A word of caution: the blower resistor gets very hot during normal operation, so care must be taken to avoid burns and other injuries. Fuse for power presence by turning on the firewall with the blower motor 's speed a typical blower is. 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