Car Cooling Fan Control Circuit

Which may not be fast enough to prevent overheating.

Car cooling fan control circuit.

The ecu then triggers a check engine light to illuminate on the dashboard. 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. On older fan circuits the thermostatic switch connects to battery power on one side and to the fan motor on the other.

On applications that have variable fan speeds. 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. The engine may also overheat if fan speed fails to increase when additional cooling is needed.

The vehicle s pcm s function is to act as a ground to operate components not to supply power. A constant power supply from the battery is present on a terminal in each of the relays. The vehicles ecu has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. This one turns on the fan when the circuit is closed.

The fan relays are nothing but a remote light switch. Or a failure of the fan relay or control circuit is bad news. 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 fan may work but it only runs at low speed.

Get the 10 gauge wire and place it through the hole in your fire wall. 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. A switched terminal will be hot only when the key is on.

Engine cooling fan issues.