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Mar
The blower motor is a DC electric motor driven by varying current supplied by the blower motor final stage unit. Blower Motor Resistor Test.
Additionally can you test a blower motor resistor.
Test blower motor resistor. Blower Motor Resistor Test. If you can hear the blower fan running but cant make it change its speed you probably have an issue with its resistor. Here are some tips.
In high speed the resistor is bypassed and power is fed to the motor directly from the switch. Above is a typical blower resistor. Specifications and test procedures.
How to Troubleshoot a Blower Motor Resistor Locate the fuse for the blower motor in the ownersservice manual. Unplug the blower motor and test for power using the. The reduction in blower fan speed is accomplished thru resistors inside the blower resistor assembly.
HI is the only blower speed that doesnt depend on the blower resistor to function. When the blower motor resistor fails 1 of the 3 or all 3 first speeds stop working. Resistance Testing The Blower Motor Resistor Were gonna test the continuity of the blower motor resistor with a multimeter in Ohms mode.
Youll need to remove. Checking Continuity Of The Blower Resistor. OK to get your blower motor resistor diagnostic on its way the first thing well do is to remove the blower.
Testing at the motor itself eliminates the possibility of confusion caused by complicated electronic blower controls found in Electronic Climate Control systems. The blower motor resistor is an electrical component that is a part of the vehicles heating and air conditioning system. It is responsible for controlling the blower.
The blower motor resistor assembly on your 39L Dodge Dakota is tasked with reducing the current that the blower motor uses. The less current the blower motor uses. Disconnect the multi-wire connector from the blower motor resister next to the blower motor.
Start the car and turn the air conditioning on. Step 3 Test the connector. How to Test Vehicle ACHeat Blower motor.
When your blower motor goes bad you will not get AC or Heat to blow inside of your vehicle you will also not be ab. To test a resistor or motor youll need to know the basics of electrical circuitry and have access to a multimeter and the proper electrical specifications for the. The blower resistor is connected in series with the blower fan.
This means that the current running through the blower motor and thus is speed is controlled by the resistor value. The user chooses a suitable fan speed by using a selector to connect one of the resistors in the blower resistor pack. The blower motor resistor or final stage varies voltage to the blower motor to achieve the desired speed.
The blower motor is a DC electric motor driven by varying current supplied by the blower motor final stage unit. If your blower motor fails replace the blower and resistor together. You dont want to have to go back in if one fails later.
The blower motor relay is the electrical switch that is used to supply the power for the vehicles blower motor. The blower motor is the component responsible for pushing air through the vents. You asked about testing the blower motor through the resistor pack.
I would suggest grounding pin 3 and connecting a 12V source to pins 4 1 5 7 and 6 in sequential order. If you want to test the blower motor directly disconnect it from the resistor pack power the red and ground the black leads to the blower motor. Additionally can you 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.