No, the fans have separate relays. You have to use the wiring diagram to sort it out. The pcm turns on the cooling fan relay with a ground signal on a purple/black wire when the temp sensor signal rises too high.
SOURCE: 1997 Mazda Protege: Engine has clicking noise when idling.
Check to see if the valve lifters are not making the noise. Turn on the engine and rev it up to about 1500 rpms and see if the clicking is coming from the valve cover area.
SOURCE: 2001 mazda mpv overheating both fans at not working PLEASE HELP!!
Ive noticed this in a couple different series of MPVs. I have had several of the earlier generation MPVs and theres lots of sensors on these things. If one of those sensors goes bad, then the others will not work correctly. Check your manual and see if there are any additional sensors you have not checked. Also there is a site that I used to get help with my MPVs. Its www.mpvclub.com and there may be a fix listed there. These guys specialize in MPVs. Although your relays may be working, they may not be receiving a signal from the correct sensor. Also from a little research it would appear that the cooling fans themselves have a tendancy to stop working. There are several people that are saying that they are wiring their fans to run manually. The AC fan seems to be the first to go and then the main fan. Try hooking the fans up to direct power and make sure the fans are not bad. Hope this helps...
SOURCE: Possible solution to engine overheating
So if you cant find it, how do you know its bad? The relays are on the RF fender, above the wheel, under the hood. The electrical diagrams lists 3 relays. They are all powered by the ENG fuse and its a 15 amp fuse. The fan is powered by the COOLING FAN fuse 30 amps. Power to the fan motor is on a BLUE/BLACK, BLUE/YELLOW and BLUE/RED wires, of course the BLACK wire is ground. Its a 2 speed fan. I would check for power to the fan motor first as with a car this old, the fan motor is usually worn out. If it does have power to it,m rap on the moto,r if it attempts to wrok, the motor is worn out.
Testimonial: "Thanks for the help. Went to another web site where I saw symptoms the same as mine. In more than one instance they replace the cooling fan relay."
SOURCE: 2003 Protege 5 overheating on long runs.
I just replaced the radiator and thermostat on my 03. The radiator was defective (corroded) on the lip where the cap seals. This allowed coolant to be spat out. The thermostat was also sticking closed after new radiator and this caused overheating. Replace both while in there for under $100 if doing it yourself.
546 views
Usually answered in minutes!
×