Engine Cooling Fan Control Circuit

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

Engine cooling fan control circuit.

How to test fan module control box ms908p scanner. The pcm controls the cooling fan by grounding the cooling fan control circuit which turns on the cooling fan relay. How to test ford and lincoln 3 wire electric cooling fans. What the p0480 code means.

The vehicles ecu has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. The ecm controls the cooling fan by grounding the cooling fan control circuit which turns on the cooling fan relay. Because it can allow the engine to overheat. Https amzn to 2lci9ag in this video we will demonstrate how to test radiator fan and radiator fan con.

The cooling fan relay will be commanded on when the following conditions are met. Error code p0480 is defined as cooling fan 1 control circuit malfunction. The fan may work but it only runs at low speed. The pcm powertrain control module senses the increase in engine temperature through the cts coolant temperature sensor located near the thermostat.

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. 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. Learn how to quickly verify the circuit and control system with this case study on a 2009 lincoln. The a c clutch requested.

The cooling fan relay will be commanded on when the following conditions are met. On applications that have variable fan speeds. 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. P0480 means that the cooling fan 1 control circuit has a malfunction.

P0481 is the obd ii generic code for a problem with the control circuit for cooling fan 2. Which may not be fast enough to prevent overheating. 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 ecu then triggers a check engine light to illuminate on the dashboard.

Engine cooling fan issues. The engine coolant temperature reaches 106 c 223 f or more. Cooling fan relay 1 control circuit. The engine may also overheat if fan speed fails to increase when additional cooling is needed.