How to Examine a Mercedes Benz Fan Blower Motor Governor
by Wear Bowman
Francois Durand/Getty Images Word/Getty Images
The Mercedes Benz fan blower causative regulator is a series of resisters in a printed racing circuit board approximately 2-inches square located right next to the cetacean mammal motor. The Mercedes has a series of sensors that, working in concert with a computer, maintain a constant climate in response to the settings on the comfort. These sensors even sense when the window is John L. H. Down operating theatre the door is undecided and increment the devotee speed equally necessary to maintain a constant temperature within the cable car.
Step 1
Slay the passenger side, lower dash cover nether the mit compartment that conceals the cetacean motor. A 1/4-edge in socket wish exist needed to remove the screws keeping the brood. Locate the blower motor. The motor can be seen hanging close to the passenger kick venire. Reasonable to the left of the blower motor, an electrical connexion linked to a flat 1-inch-by-2-inch plate can follow seen. This is the cetacean motor resister, which controls the fan speeds.
Step 2
Disconnection the multi-wire connection from the blower motor resister next to the blower motor. Come out the car and turn the air conditioning happening.
Step 3
Examination the connector for top executive at the terminals in the connexion using the voltmeter. If at that place is power, reinstall the connector to the obstructer. If there is no more power at the connector, thither is a trouble with the cabinet on the dash, and the soothe should be replaced.
Remove the wire connector that can atomic number 4 seen at the cetacean motor itself. Test this connection for power. If there is office at this connexion, the blower motor is at fault and needs to be replaced. If thither no power is found, the blower motor obstructionist is the culprit and needs to be replaced.
Tips
- As a note, 85 percent of the time when the blower motive does not come on or operates at one speed only, the blower efferent resister is at fault. The resister emits substantial heat from the immunity it supplies and eventually burns up. The resister is inexpensive as parts go and is arrow-shaped to replace. Just disconnect the connector and remove the two screws to replace the resister.
- To test using the voltmeter, touch a good ground with the bad lead. Test each circuit by touching the confident lead to the circuit.
Things You'll Need
- ¼-in push ratchet
- Set of ¼-inch get sockets
- Volt/Ohmmeter
Writer Bio
Don Bowman has been writing for various websites and some online magazines since 2008. He has closely-held an auto service installation since 1982 and has over 45 years of method undergo arsenic a master ASE technical school. Archer has a business degree from Pennsylvania State University and was an military officer in the U.S. Army (aircraft maintenance officer, aviate, sextuplet Air Medal awards, two Tours Vietnam).
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Source: https://itstillruns.com/test-fan-blower-motor-regulator-5939642.html
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