Testing Blower Motor Resistor

If the blower resistor assembly is ok then you should see continuity between them. In some cars a failed blower motor resistor can cause a heater fan to stop working completely.

Part 1 How To Test The Blower Motor Resistor 1995 2003 2 2

Blower Motor Or Blower Motor Resistor Issues

Blower Motor Resistor How It Works Symptoms Problems

Resistance testing the blower motor resistor.

Testing blower motor resistor. Test and troubleshoot ac blower motor resistor on a honda accord. If the blower motor only runs in hi or one of the blower speeds is not working then theres a good chance that the blower motor resistor assembly is bad. How to test the blower motor resistor gm 43l 50l 57l.

Blower motor resistor function and diagnostics. Page 1 of 2. In high speed the resistor is bypassed and power is fed to the motor directly from the switch.

Many blower resistors control current to the blower motor in all speeds except high. What were gonna do to find out if the blower resistor assembly is bad is to check the continuity between all of its terminals. A faulty resistor loses power at different positions on the switch.

Voltage tests of blower resistor. Honda odyssey 2005 2010 blower motor resistor testing showing pins. Testing at the motor itself eliminates the possibility of confusion caused by complicated electronic blower controls found in electronic climate control systems.

Thankfully the blower motor resistor on your ford explorer ranger mercury mountaineer can be checked with a few simple continuity tests. Test for power at all the blower speeds by moving the blower speed switch through all positions. Problems with a blower motor resistor are common in many cars.

The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting 4 or 5 and doesnt work at low speeds. Testing the voltage output of the blower switch on the heater control panel. 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 able to defrost your windows. Blower motor resistor testing an ac blower motor resistor uses resistance to control the speed of the blower motor. If the blower motor resistor assembly is bad then youre gonna have no continuity between 2 of its terminals.

Blower resistor circuit descriptions.