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.

Car cooling fan control circuit.

On applications that have variable fan speeds. Get the 10 gauge wire and place it through the hole in your fire wall. The fan relays are nothing but a remote light switch. The vehicle s pcm s function is to act as a ground to operate components not to supply power.

The electric cooling fan uses a direct current dc electric motor with a thermo switch module or computer control to turn it on or off depending on coolant temperature or ac operating condition. During the install christian shot. This one turns on the fan when the circuit is closed. The fan may work but it only runs at low speed.

P0480 means that the cooling fan 1 control circuit has a malfunction. This will be the wire that connects your switch to your fan power wire. Because it can allow the engine to overheat. 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.

The fan as well as other apparatus draws too much amperage to be safe in the cockpit so it s kept under the hood. Engine cooling fan issues. What causes the p0480 code. Now take the power wire from your fan and connect it to the wire that is going through the firewall.

So now we have a wire that goes through the engine bay to the cabin of your car. Which may not be fast enough to prevent overheating. The engine may also overheat if fan speed fails to increase when additional cooling is needed. The ecu then triggers a check engine light to illuminate on the dashboard.

A constant power supply from the battery is present on a terminal in each of the relays.