First check the fuse in the engine compartment relay box. If not the fuse, you will need a 12 volt test light (or voltmeter) to troubleshoot, as there are several possible reasons. With the engine hot and running, pull the connector off the fan and use your test light to see if there is voltage in the connector. If there is voltage, replace the motor. In no voltage, move on to the relay. pull the relay out of the socket (in the same box as the fuse). If it clicks when you pull it out, your wiring to the fan is bad. If it doesn't click, try switching it with a similar relay. If a different relay clicks when put in the fan relay socket, your fan should now be coming on. If neither relay clicks, interrogate the relay socket with your test light. Put your clip on a chassis ground point and probe the terminals into the relay socket. If 2 of the sockets light up the light, the system is trying to throw the relay. If not, the likely problem is the PCM or the coolant temp sensor, which is read by the PCM. Hopefully you don't get to this point, as I assume your temp gage is working. Let me know if you have questions.
Get a chilton repair manual and find the location of the fan relay and replace it.
First, check the fan relay, early to the radiator bottom, and thermostat and engine temperature sensor.
http://repairhelpcenter.blogspot.com/2011/11/engine-cooling-components-working.html
------------------
How does Vehicles Engine
cooling system works?
http://repairhelpcenter.blogspot.com/2011/11/how-does-vehicles-engine-cooling-system.html
------------How to Replace Engine cooling
Fan:--
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-engine-cooling-fan-on.html
-----------Replace Fan Relay but still
Radiator cooling fans not working?
http://schematicsdiagram.blogspot.com/2011/12/replace-fan-relay-but-still-radiator.html
----------DIC says "COOLING FAN
FAULT"?
http://schematicsdiagram.blogspot.com/2011/12/dic-says-cooling-fan-fault.html
---------Where Is Radiator Fan relay
and Fuse Located?
http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html
--------
This will help.
Thanks.
Please see my tip at http://www.fixya.com/cars/r6022358-relay_check for how to check the command signal and let me know if you have questions.
239 views
Usually answered in minutes!
×