Engine Cooling Fan Control Circuit

Cooling fan relay 1 control circuit.

Engine cooling fan control circuit.

P0481 is the obd ii generic code for a problem with the control circuit for cooling fan 2. The ecu then triggers a check engine light to illuminate on the dashboard. How to test ford and lincoln 3 wire electric cooling fans. The engine coolant temperature reaches 106 c 223 f or more.

Error code p0480 is defined as cooling fan 1 control circuit malfunction. When the temperature reaches about 223 degrees f value depends on make model engine the pcm will command the cooling fan relay to turn on the fan. The pcm controls the cooling fan by grounding the cooling fan control circuit which turns on the cooling fan relay. If this does not take place the check engine light will illuminate on the dashboard.

Learn how to quickly verify the circuit and control system with this case study on a 2009 lincoln. The engine may also overheat if fan speed fails to increase when additional cooling is needed. Or a failure of the fan relay or control circuit is bad news. The cooling fan relay will be commanded on when the following conditions are met.

Https amzn to 2lci9ag in this video we will demonstrate how to test radiator fan and radiator fan con. The vehicles ecu has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. The engine coolant temperature reaches 106 c 223 f or more. Because it can allow the engine to overheat.

Engine cooling fan issues. This code refers to the engine cooling fan circuit as it experiences a malfunction causing the fan to fail and allowing the engine to overheat. The fan may work but it only runs at low speed. The ecm controls the cooling fan by grounding the cooling fan control circuit which turns on the cooling fan relay.

The a c clutch requested. 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. How to test fan module control box ms908p scanner. P0480 means that the cooling fan 1 control circuit has a malfunction.

The cooling fan relay will be commanded on when the following conditions are met. The a c clutch requested. This code is a generic trouble code which means it applies to all vehicles equipped with obd ii scanner or vehicles made since 1996 up to present. The pcm powertrain control module senses the increase in engine temperature through the cts coolant temperature sensor located near the thermostat.