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Radiator fan not turning - Aveo Chevrolet Cars & Trucks

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The radiator fan works like this, it carry fuse a relay and fan switch then you have the fan itself. to diagnose the problem easily i would start at checking if the fan is working first. you can do so by unplugging the wires from the fan and connect 12 volts, or b+ and ground to make the fan spin, it don't matter which way as it will spin forward or backward. if it spin then your next step is to check if the fuse is blown. if the fuse is ok then the next step is the relay which will be in the engine compartment. you should be getting 2 12 volts when the ign is turn on, a ground( - ) and the next would would go to the fan, if you put 12 volts to the next one the fan should spin. if you're getting all those then you turn to the fan switch is where the lower hose goes to the engine, there you will see a switch with 2 wires depending on what kind of vehicle you have. in some cases you can take the switch off and start the vehicle and the fan should comes on, and sometime you bridge the connectors. if the fan comes on then you have a faulty switch. hope that help

Posted on Feb 16, 2014

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12_4_2011_10_30_47_pm.jpg

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