Engine Cooling Fan Control Circuit

The engine coolant temperature reaches 106 c 223 f or more.

Engine cooling fan control circuit.

The cooling fan relay will be commanded on when the following conditions are met. The ecm controls the cooling fan by grounding the cooling fan control circuit which turns on the cooling fan relay. The engine may also overheat if fan speed fails to increase when additional cooling is needed. Learn how to quickly verify the circuit and control system with this case study on a 2009 lincoln.

Which may not be fast enough to prevent overheating. The vehicles ecu has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. Cooling fan relay 1 control circuit. The ecu then triggers a check engine light to illuminate on the dashboard.

The a c clutch requested. If this does not take place the check engine light will illuminate on the dashboard. Because it can allow the engine to overheat. The pcm controls the cooling fan by grounding the cooling fan control circuit which turns on the cooling fan relay.

On applications that have variable fan speeds. Or a failure of the fan relay or control circuit is bad news. Error code p0480 is defined as cooling fan 1 control circuit malfunction. How to test ford and lincoln 3 wire electric cooling fans.

P0480 means that the cooling fan 1 control circuit has a malfunction. The cooling fan should be commanded on under certain conditions where the engine requires more cooling and this is controlled via the cooling fan relay. The fan may work but it only runs at low speed. The cooling fan relay will be commanded on when the following conditions are met.

Engine cooling fan issues. The engine coolant temperature reaches 106 c 223 f or more. What the p0480 code means. Https amzn to 2lci9ag in this video we will demonstrate how to test radiator fan and radiator fan con.

The pcm powertrain control module senses the increase in engine temperature through the cts coolant temperature sensor located near the thermostat. P0481 is the obd ii generic code for a problem with the control circuit for cooling fan 2. How to test fan module control box ms908p scanner. The a c clutch requested.