Car Cooling Fan Control Circuit

Or a failure of the fan relay or control circuit is bad news.

Car cooling fan control circuit.

The vehicles ecu has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. Get the 10 gauge wire and place it through the hole in your fire wall. The fan may work but it only runs at low speed. Which may not be fast enough to prevent overheating.

On applications that have variable fan speeds. P0480 means that the cooling fan 1 control circuit has a malfunction. A constant power supply from the battery is present on a terminal in each of the relays. A switched terminal will be hot only when the key is on.

Because it can allow the engine to overheat. The ecu then triggers a check engine light to illuminate on the dashboard. The temperature controlled switch is designed to turn the fan on when coolant temperatures reach 195 degrees and turn off the fan when temps drop to 185 degrees. So now we have a wire that goes through the engine bay to the cabin of your car.

This will be the wire that connects your switch to your fan power wire. Engine cooling fan issues. This one turns on the fan when the circuit is closed. During the install christian shot.

The fan as well as other apparatus draws too much amperage to be safe in the cockpit so it s kept under the hood. The vehicle s pcm s function is to act as a ground to operate components not to supply power. On older fan circuits the thermostatic switch connects to battery power on one side and to the fan motor on the other. Now take the power wire from your fan and connect it to the wire that is going through the firewall.

What causes the p0480 code.