Government your motorcar's fan speeds by replacing the Engine blower resistor.
A blower Engine resistor is the Slogan by which a machine's heating and air conditioning unit controls the fan speeds. There are two contrary types--the resistor wire type that uses a contradistinct amount coil of wire for Everyone fan rush with colorful resistances and the printed succession board with a fully integrated progression. Both units are located in the duplicate purpose, which is in the prompt proximity of the blower Engine. They are always a petty unit, normally Two inches by Three inches. The inaugural unit, which is the series of antithetic extent coils, is mounted on a petite Apartment lodgings non-conductive plate and the moment has a order board on a plastic mould plate.
Instructions
1. Set the blower Engine and flash encircling the away and quick to the Engine for a 2-by-3-inch plate held on by two or four tiny screws. There Testament be an electrical connector plugged into it with five or six wires, depending on the vehicle type and heating and air conditioning type of authority panel.
2. Corroboration the resistor before replacing it. It is always recommended to confirmation any electronic unit before replacing considering there are a multitude of matters that could originate the corresponding symptoms. It single takes a unusual minutes and can qualify the assumption that a tool is wick. It Testament save banknote to interchange or repair the correctly division the first time.
3. Check the speeds by turning the fan conrol to all positions. Take note which fan speeds work and which speeds do not work. If it does not click, then replace the relay.6. Check the voltage at the electrical connector on the blower motor resistor to see if the fuse and relay are good.
If the fuse looks good, then take it out and turn the ignition key on and use the volt meter set at Twenty volts DC. Check to make sure that there is voltage to the fuse. If not, check for an open circuit to the fuse.
5. Check the relay to determine if there is power at the fuse. The relay should have two of the four terminals showing power. With the key on and the fan turned on, remove the relay and put it back in, listening for it to click. If the fan works only on one speed the blower motor resistor is very likely bad.4. Check the fuses if the fan speeds do not work. The fuses for the interior heating and air conditioning fan are usually under the hood in the fuse and relay center.
Make sure that power is present at the connector with the key on and the fan switch on. There should be power at two terminals of the blower motor resistor. If only one terminal has power, replace the resistor. If two terminals have power, replace the blower motor itself. Remove the screws and unplug the connector to remove the blower motor resistor. Put the new one in its place by screwing it back in and plugging in the wiring connector.
