(Mitsubishi Lancer) Faulty Fan Control Module
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- čas přidán 7. 09. 2024
- 2003 Mitsubishi Lancer ES 2.0L
In this diagnosis, i am troubleshooting a vehicle that has cooling fans that keep running with KOEO or KOER. I emphasize some testing methods that will help determine the culprit problem between the fan control module or ECM unit. This cooling fan operation is a module to module communication. For more information about module to module communication and pull down circuit design, check out "scannerdanner" CZcams channel.
This is exactly the problem I'm having with my 2004 Ralliart. Ty so much for making this video. The way you explained everything was the info I needed. Ty again. Going to subscribe
I'm glad this video helped. Very common problem on these vehicles
excellent video, really appreciate the time you take you to do it, I just had the same problem in a Mitsubishi lancer , and thanks to this video I solved it , thanks again.
greetings from Guatemala
Thank you for your support. I'm glad it helped solve your problem.
Saved me a lot of time and money.
$20 ebay control unit compared to a $605.32 quote from Mitsubishi and a weeks worth of hassle quoted by a mechanic.
Legend, thank you brother.
You're welcome Joey.
I agree with you man ripped off money if u can replaced this worth $20 in ebay. Save a lot of money!! God bless you Sir for posting this video!!
excellent video, i have the same problem except both fans run when cold, i got one from the junkyard one year younger, now its perfect only comes on when temp reaches 200° there is more silence now, that the fans aren't on all the time, thank you!!.
Luis Rodríguez I'm glad it helped.
easy fix is to get a hot air gun and apply heat to the back till its hot enough to melt the solder and create contact again. i have done it many times it works, also if you can relocate the controller to less heat
That works for my missi mate thank alot
Thank you very much for your video, it helped a lot saving time and money. God bless you. Have the same problem and also headlights are fading every time fans start working.Best regards from Juarez, MEX. (Border with El Paso, TX).
Excellent video, just done on my lancer evo 7
I have rhe same thing too for my mitsubishi lancer es 2004.. i order in ebay the control module. Then i will replaced them. Hooe this is the problem on mine. Thanks for the video!!
Let's hope it works
Changed my relay since it was cheaper, plan on changing the module next and will report if it fixes my issues in particular.
Did it work?
Thanks for the information friend
You're welcome!
excellent i have the same problem in my car.
My 2004 Mitsubishi Lancer cool/hot gauge went to H 2 days out of the blue, never had any problems with it. I stop the car and then waited a bit and drove it home from work with the needle mid way as usual... The next morning, same thing -drove to work with needle mid way between cool and hot which is normal but when I was ready to go home at the end of the day, as soon as I put the key in, it went all the way to hot. I checked the coolant and it was full to the top and green. I did not check the water reservoir, I have no idea about that. I figured the fact the car was standing all day in the hot sun here in FL so I had to wait a while for the sun to be less stronger and attempted to drive home... I had to stop 2x when the needle went to Hot but as I got on the highway and the air hit the car, the needle stayed halfway. I drove all the way to the mechanic and left the car there. This morning the mechanic said he change the thermostat but it still goes all the way to Hot when he turns on the car, and he mentioned the fan not stopping but my car fans ran a little while after the car was shut off then they'd stop. At this point he has no idea what is wrong with the car and I don't know if it's worth to fix it, especially if he doesn't know what is wrong with it.. he mentioned something about the water pump or an air pocket in the engine? Im lost . Also I have been driving the car without AC for 5-6 years in FL. I don't want to spend a lot of money fixing a car that is not worth fixing unless you know about cars... What do you think? The car has a lot of problems but it was drivable in the past... that's all I need something to take me back and from work. 30 miles round trip a day.
Yolie R. Hi Yolie, the first things that come to mind, a potential clogged radiator, head gasket problem or some type of electrical problem.
Yolie R. Are the fans kicking in when the needle goes to hot?
I'm having the same issue!!! And even after my bf wired the fans separately with a kill switch, the car continues to over heat. I plan on changing out the thermostat. Any other suggestions as to what could be the issue???
@@monanbobby143 -my car has the same issue i have a 2006 2.4L lanser and i took the wire of the temp switch and the fans stay on all the time the engine light stays on aswell BUT everything is good the car will not overheat anymore, aircon works good and the auto shop can't work out what the hell is going on, it's not the thermostat, it's not the fan module,it's not the temp switch
My 03 outlander has this problem but every time I get a new module it ends up going bad again, it's been a recall item since I bought the car brand new in 2003 is there anything you could suggest I do differently? Thank you for your informative videos💜
Hey Summer, how long does the fan module last before it goes bad? Has your fan motor ever been replaced?
Very good video.
Thank you. Brilliantly explained.
Having a similiar issue, changing my control module and reseting the ecm. hopefully it works
.
Just relocate the fan module because it's the location that melts the solder I put mine near the front bumper and never had another issue
We are having almost the same problem with our Mitsubishi Lancer CS3 2008. We switched off the AC and then after 10 minutes of being stuck with traffic, we noticed the temp gauge at around 80%. We stopped to let it cool down. After few minutes, we started the engine with AC on and the temp went OK. We brought the unit to the service shop and they noticed that the radiator fan is working but delayed and not as fast as it should be. They said these are all the items that should be replaced. We did not push through with the repair because their parts are very pricey (almost $550). Should we proceed with purchasing the controller first instead of following the service center? Looks like your video is relatively reliable. Thank you
Radiator Fan Motor
AUX Fan Motor
Fan Controller
I'm having the exact issue, same car as well. Hope this works.
Good video, only issue I have is that the control signal I believe is pwm based, so although yes its 0v-5v that is obtained by varying pwm to get those voltages ( rather than resistor to ground), I could be wrong.
Is there a good value obd unit you would recommend for this vehicle that can connect to all computers on the vehicle?
I believe its mitsubishi mut2 protocol, and the cheaper elm type devices will not connect to all the ecus.
Thanks for your input, much appreciated!!
I would recommend Autel or Launch scanners
Where do I put the negative and the positive points I’m confused?? To test the voltage
If you are going to check for battery voltage, connect the black lead to battery negative and red lead to pin 1. To check for ground voltage on pin 3, it's the same connection, you should get a reading less than 100mV/0.1V. To check for pin 2, same connection. Hopefully, it help you.
Im picking up a 03 Lancer ES tomorrow and it was doing the same thing on idle, fan was so loud as if the a/c was on in really hot weather.
Very typical of a faulty fan module.
I hate changing and changing my FCM it keeps on breaking, what do you think if i just bypass it, i put a negative trigger and connect it to the signal wire since in the video you said when the ecu turns the fan on it removes the ground
Thanks helped me allot
Glad it helped!!
Thanks a lot i had the same problem but i have a question my car is 2007 ralliart model and we don’t have a lot from this model down here in the junk yard, can i just put the fan module from another model of lancer like the 2003 1.6 engine lancer
That is a good question, I'm not 100% percent sure, it all depends if the manufacturer programed the pcm to operate differently from a non-ralliart. Most likely it should work.
Try cross referencing the part number from a ralliart to a non-ralliart.
Are IC231 19700 and IC232 19700 Fan Control Module interchangeable..? I cannot read if it's IC231 or IC232 (2005 Mitsubishi Lancer OZ Rally Racing Edition).
FYI... the AutoBoss V-30 is no longer in production.
@@EliTheOBDTech thanks...
this will get my fans to work? i surely hope so
hello my friend ...2004 sportback ralliart....just like this video my fans come on when cold but they pulsate from off to low speed to high-speed the off again high and then low ...then off ....both the fans work...when I turn on the A/C the fans are more stable but pulsate from high to low several cycles drives me nuts...some where I seen on a forum that there was some sort of ground in a wiring harness....I have been reading tons of information for over a year and stull come up empty handed ...I could make a video if necessary...thx again
+Bill Frev Hello Bill, most likely is going to be your fan control module, they tend to short-out internally. Have you replaced the module already? Perhaps, it can also be a ground issue.
no I have not checked on any thing ...so many similar problems...I did install a stereo amp and seemed like the problem got more frequent...from the battery there is a power wire with fuse link for the amp....but the ground it to the body pan inside the car ...so it is using the factory ground to power the amp ...I have thought of adding a new ground to the body pan inside the engine compartment...still at a loss
thank you for your time indeed
+Bill Frev Try doing some of the voltage checks that I performed on my video. Hope you get your problem solved. Your welcome.
I got a problem my fan is not getting any power I checked the wires and also I got a new fan the one the gos on right side how do I find the fuses
Check your fan control relay, it might be faulty. It should be in the fuse box under the hood.
Im having a no fan at all, I replaced the module since im getting 12v-5v-ground on the harness but its didn’t fix it, replaced the temp sensor but neither that works, I disconnected the signal from the ecm to the module and the fans are working all the time the key 🔑 is on.. im confused like is my ecm bad? Or i buy a defective fan module? I don’t have a fancy scanner to do all those tests, only a multimeter and a test light 😮💨
Hey Edgardo, sorry to hear about your current problem. This system is module to module communication, so if you already changed your fan module you may have a potential chance that your ECM is not getting the signal. Did you replace the module with a new one?
When I get chance, I will look at the wiring diagram again and look for another possibility.
With the main connector connected to fan module and back probing the middle wire which is your control wire, what is your voltage? It should be 0 volts with fans off and 5 volts when pcm commands the fans on.
my ac doesn't work when the weather is too hot .but when the weather cool my AC ia work well
There's a possibility that your condenser's cooling fan might not be working at its full potential to cool down the ac condensor.
My 2003 eclipse ,same thing
excellent
starting problem : connected the battery neg cable to the neg post with the ingintion in the off position the car start to crank so I disconnected the trigger wire which is the ingintion wire with the key on in the off position im getting 12v with the ingintion off what do I check next thank you
one question i have a ford edge my fans stops working and then when i turn my truck off to let it cool , i started it again and then my fans works find again what it would be?? thank you
If your ford edge has a fan control module, then most likely you have a module that it's starting to go bad. You will need to check for power and ground to make sure it's not losing none of those two when the module activates the fan ON.
What is that 5v from the FCM, is it like s switch so when i grounds it'll trigger?
The 5 volts that come from the module is there as a reference Voltage to the pcm. The pcm needs to see 5v in order to oprate the fans. The pcm will provide the ground depending on input sensors.
@@EliTheOBDTech changed my FCM but still my fan doesn't work on "no aircon"
I just got my car overhauled and after we put everything we started it and thats it we saw the fans are not working and we tried to on the aircon and it worked, we thought it was the ECT and we changed it, but still it doesn't work. Now we changed the FCM but still 🤷🏻♂️. It's so annoying. Checked the signal wire output and its a bit weird because it doesn't cut the ground when the fan is supposed to be on 🤷🏻♂️
I think its the ecu or just a grounded wire 😓
@@judsonfrenilla6573 Yes, it sounds like a wire issue from the main harness or ECM driver not switching to ground.
I seem to have a similar problem, but my fans don't run at all. The cooling fan fuse blew, but they still don't run after replacing it. AC also runs hot, is it still most likely a faulty control module?
Most likely yes, these are known for going bad.
the fan doesn't stay on for long about 5 sec
i have mitsubishi lance 2004 and the fans is always on what can I do ?
DANIEL LOZANO More likely your control module is faulty. Try doing the steps I did in my video.
I also have a Mitsubishi galant 2001
hey mate i was really looking for a complete video and yours was the one.
now i have an issue. my car originally did not come with fan control module. it was only fan relay(4g18). i have swapped engine and ecu (4g93) and now i have an issue. my fan is consistently ON once i fire up the engine. i believe because of not having PCM. how can i "cheat" or modify the ecu or wire to kick the fan. because 4g18 works as "with ground, fan on" i am so lost
Hey R Raj, I'm not sure if I'm right person to ask about modifying circuits. I really don't like doing things like that, messing with the integrity of a circuit, sorry man.
working on a 96 jeep Cherokee sport 4.0 install a new ingintion switch the old switch had some burn mark on it OK on the new switch as soon as I connect the neg battery terminal the starter start cranking with the new key on the off position I check the power at the trigger wire disconnected no volt what do I check next
sounds like a serious issue, I currently don't have my laptop with me so that could look at the ignition wiring diagram. As soon I get home I try to give you some possible answers.
perhaps you have some type short on the trigger wire for the stater, try checking the stater relay also.
+Simon flores My only explanation that i could thing of, is either you installed the ignition switch wrong or you have a short to ground ignition wire on pin 1. As you can see on the diagram, the ignition wire is yellow. Somewhere between the ignition switch and Starter relay, you have a short to ground, which is causing your relay to energize as soon as you put the negative battery cable. I would try to trace your yellow ignition wire all the way to the starter relay. Good luck!!
+Eli TheOBDTech I see that you all ready have the wiring diagram on your Google+ account. Refer to that on the message above when mentioning about pin 1 and Yellow ignition wire and starter relay.
Great video, thanks. Will use this method to diagnose other cars too. 5v comes from fan control module or the pcm feeds 5v on/off signal?
it comes from the fan module. Thanks for the support.
I have a 2004 Mitsubishi Lancer ralliart and it’s overheating and I bought the module but it still overheating??? What could it be??
Are your fans kicking in when the car starts to overheat?
It could be many things: faulty thermostat staying stuck close, clogged/restricted radiator and worst case scenario, blown head gasket.
I'm having the same issues with my 03 outlander I have done all the tests you have preformed. my question is will the "ect"cause the fans not to work since it is a input?
yes!
Having same problem with 2004 sport back very frustrating
Very common for these modules to go out.
Eli,
I have a 2004 Mitsubishi Lance Ralliart. I am going to replace my cooling fan control unit. My question.....I find replacement parts for an 04 Lancer or an 04 Lancer Evo. None for an 04 Lancer Ralliart. Does the 04 Ralliart fall in the 04 Lancer guidelines or the 04 Evo guidelines? Which part do I order????
under the lancer guidelines.
+Eli TheOBDTech
Thanks
Mazda 3 uses the same parts- mazda and mitsubishi both have same cooling issues - the best thing to do is remove the temp switch wire from the motor the fans will stay on all time when driving
I have a similar issue on my Lancer, my problem is both fans spin slowly, checking the output voltage from the Fan Control to the fans is only 5v, I suppose there should be 12v, can you check in your ALLDATA software for that voltage? I'll appreciate very much and thanks for all the info in video.
Alan Valle Sorry for the delay, busy schedule lately. I will try to relay that info asap. Are you talking about the 3 wire fan control module connector or the 2 wire fan connector?
Eli TheOBDTech thanks for reply, my ask it's about the 2 wire fan connector.
Alan Valle Ok Alan, specs on All Data show: 8.2 +/- 2.6v
Try this; disconnect the condenser fan motor connector. Ensure that the A/C switch is off, and start the engine and run it at idle. Measure the voltage between the fan controller-side connector terminals(not harness side connector). Standard value: 1 volt or less. Turn the A/C switch to the ON position. Measure the voltage between the fan controller-side connector terminals while the fan is running. The voltage should repeat the values 1 and 2.
Standard value:
1. 8.2 +/- 2.6v
2. Battery positive voltage +/- 2.6v
What could be a problem if radiator fan is "not working" when temperature is already in high temperature and when turn on ac the radiator fan run at the sametime with ac cooling fan? Thank you for the answer if ever.
edward gandeza Depending on the vehicles cooling system, a faulty fan control module or a faulty ecu cooling temp sensor can cause a fan not to operate even though they do operate with the ac being on. This happens because the ac system has its own circuit design from the cooling system.
@@EliTheOBDTech thanks for your video . It is really great and helpful. I have same above issue. Let me try to check temp.sensor
sir my mitsubishi lancer 2005 model the two cooling fan did not work the technician said the fan relay have a problem and change it. how can i fix it without change my old fan relay because new one are very expensive.. thank you.
+Ricky Reyes The only other way is to rewire you cooling fans with a separate switch. Try looking for one on ebay or amazon. Even for a used one at a junk yard. You are better off replacing your fan control module and not bypassing the cooling fan system.
Thank you so much.
How can i make an appointment? Ove taken my trucks to 6 mechanics nobody can figure out my issue please help
Good morning Jay, what's the symptom on your vehicle?
Excelente video me gustaría que fuera en español..
Gracias!! Lo malo q no soy bueno en español.
Hello! Good Video. I have a question. I drive Mitsubishi Space Wagon and there is a problem(?) with cooling. If i run engine for bleeding of lush ajusters for example engine get warm so both of radiator hoses are hot (upper and lower) but engine fan doesn't rotate. If i switch A/C on it does. I have correspond elektric plan of fan controller how can i upload this?
Thanks a lot
Roman Janke Do you know if your vehicle has a fan control module? Like the one shown in the Lancer
I could upload elektric plan (pdf) to your E-Mail (no spam guaranteed :))
The device looks very similar, attached at the same place. I do not know if it fan controll or fan controll module (may be the same?) Part Number is DENSO 499300-3051. There are some images in Network:
www.google.de/search?q=MR373727&client=firefox-b&dcr=0&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwj5k6LfqtPXAhVDChoKHSYND2YQsAQIQA&biw=1344&bih=714?
Car was produced in 1999. Thanks!
great work but my 2003 space wagon (chariot) tempture stay halfway but my fans dont come on dont matter hor far i drive car does not over heat i have change the coolant temp sensor and they still wont work
Damion Wollery have you tried to manually energize the fan motors by applying 12v to them? you may also have a faulty fan relay or even a blown fuse.
Eli TheOBDTech yes I manually test the fans and they work I even unplug it from the coolant temperature sensor and both came that's why I change the sensor but its still not coming on and car not over heating the mechanic says it's because the fan has three speeds I I am driving faster than the fan speed so the engine is always cooling
Mmmmm... well if the car is not overheating I'm thinking that your fine.
Sure hope so for all my drives are highway think I need to try traffic thanks for the help and keep doing a good job
Is the part number for the control module 1355A408
TUNASPASM I'm not sure, it was a customers vehicle.
Tengo un Mitsubishi outlander 2006 4 cilindros con el mismo problema pongo la llave en ON y prenden los abanicos doy marcha y despues de 5 minutos se apagan y el motor se empieza acalentar
Si su outlander tiene El mismo sistema con el modulo de abanico Como el Lancer, su problema va ser el modulo.
I think I have the same problem with my car my car is a Mitsubishi lancer 2003 rally and whoever I tell this to even if I go to the shop or family members are mechanics I'll tell me it's normal what should I do or how can I get in touch with you
Email me your number at eguillen.tech@hotmail.com
As soon I get a chance, I will contact you.
Best way to verify, is trying my methods as I showed on my video
hello I have a question. because, when I activate the A / C the 5v appear, but when I do not activate it the fans receive a voltage of 1.58v and at low speed. Is this behavior normal? Does the vehicle have high speed and low speed on the fans?
Hey there Roberto, I'm not quite sure if i remember seeing that voltage. Is that coming from pin 2 of the 3 wire connector on the fan module?
@@EliTheOBDTech yes. it comes from pin 2 of the fans module. when I activate the A / C the 5v appear. to only regulate the coolant temperature only 1.58v appear in low speed. would that behavior be normal?
@@robertoserrano3204 I really don't remember if this vehicle was equipped with fan low and high. Apparently in the video when using the scan tool to do bi-directional control, I selected fan low option. The voltage went from 0 to 5 volts. Perhaps your fan control module it's starting to go bad. These modules tend short out internally.
Is your vehicle showing signs of trying to overheat?
@@EliTheOBDTech the fan module is new and original. above, buy a generic one and the fans run at low speed. with the new one it does the same. only when I activate A / C the 5v appear. I have already verified all the steps of the manufacturer's manual and according to the manual everything is perfect. yes. the vehicle has an overheating problem.
my car over heating fast what can I do
where is the ac module ? is it the same as the extra fan module
I believe that is the same as the Cooling fan module.
When it hot,compreser is not working..but when it cool condition compreser is working well
@@tubagusgembessetiawan3273 another problem could be a glitching pressure sensor
@@tubagusgembessetiawan3273 I'm not really an expert with the AC systems. Best bet is to take it to a professional AC shop.
Or, a glitching fan clutch relay that seems to fail when it gets hot and makes the AC compressor not engage.
My fan sometimes doesn't want to turn on. Could that be a module issue or fan issue?
Same vehicle?
If your fans are controlled by a module, most likely, it's the fan module.
@@EliTheOBDTech 2004 lancer ES
@@EliTheOBDTech my car over heats periodically. The fans work when ever they want to. But some times they don't power on at all and causes my vehicle to over heat :/
@@MrPewPew187 it's a very common problem on these vehicle, for a faulty fan module.
hey sir, please help my car nissan elgrand, and the signal wire frm pcm shown 12v all time, is that pcm fault or can be bad ect sensor ?, i hv the new control module , and the old module make my fan melted n then i replace the module , first start its normal ac on fan on ,engine tempt 98 fan on engine temp 95 fan off , but in the next day i turn of the ac ,fan on , turn of the ac fan doesnt turn off, and fan stil on , on key one position,, please help sirr
Hey there, not quite sure if this vehicle has a fan relay, that could also cause a problem.
@@EliTheOBDTech my car hv fanbrelay n i hv bought the new one but the problem is same key on fan always on
@@EliTheOBDTech and the signal wire always 12v ground
@@fransiskusxaverius5648 give me the year make and model and engine size, when I get a chance I will look into wiring diagram.
sorry for late / Nissan Elgrand 2.5 AT year 2008
how much would this job cost
If you talking about an independent shop, it depends on the labor rate of the shop. For this job I charged the customer $40 for diag and $15 labor.
where have you been ? are you ok ? I love your videos eli
thanks for your support Mark, much appreciated. I'm good, thanks for your concern. I just took some time off to spend with the family.
open the fan control modual the prong to that conector need to be solder ive done that easy fix
cuál clavija amigo
hey great video! but my concern is how did you verify that the fan module you found at the junk yard was good? can you check resistance between pins?
Elijah Falcon by performing the voltage checks and verifying that the voltages apply to the spec sheet.
Eli TheOBDTech maybe I word it wrong. I understand the voltage checks but as far as going to the junk yard and picking a random module, besides bringing one home from the junk yard. is there any where to check the module it's self at the junk yard before making the effort to purchase and bring it home. please and thank you
Elijah Falcon oh ok, unfortunately the repair manual did not give any specs on checking resistance, so I had to purchase warranty on the control module.
understood I checked for myself no luck. the issue with my mother car is similar the passenger fan does not kick on. tho if I spin it by hand it will turn slowly. my initial thought was the passenger motor had high resistance, but doesn't less than 2 ohms. I supplied power and ground via battery and works like a charm. but as far as it being connected to the fan module it's a no go. just purchased fan with module but I appreciate your time I subscribe to your channel !
Elijah Falcon thanks for your support. unfortunately these control modules are a common problem on these lancers. a new module should solve your problem.
Anybody here has experience about the 2003 Mitsubishi Lancer get rich gas, I already clean the MAF (not changing), change the fuel pressure regulator, EGR, PCV valve, new o2 bank 1, new Catalytic converter, new EGR valve solenoid, new spark plugs but it's still rich. Anyone here have any idea.
Whats your fuel trims numbers looking like at idle and 2500 rpm?
Any misfire codes?
@@EliTheOBDTech no check engine on and OB II scanner couldn't find any code but when ever I take out the spark plugs it turn black and the o2 has too much soot on it.
@@EliTheOBDTech I don't have the measuring fuel pump pressure yet
@@PhongLe-nd2wj use your scan tool and look at the short term and long term fuel trims at idle and 2500 rpm.
You may have fuel injector problems
Or the problem
Lmao do all 2002-05 Lancer have the same Converter Problem cause my shit is going bad as well. Expensive as fuck, not to mention my fans do still run for about 10 seconds after turning off the car.
DryAssChicken it's a common problem on these vehicles
You talk to much
بعد شـُـكر الله '
شــــــكــــــراً لك ؛
Eli TheOBDTech
: Thank you
وأصل شُغلك المـُمتآز
Keeep UUUPPP .
Keeep Goooing .
' أُكرّر شُكري لك .
Very Very
Excellent steps
in diagnosing the
problem / malfunction
. Good steps
👍👍👍
مـُـهـندّس صيآنّة
طــآئــرآت مدنـيــّـة .
ومـُفتش مُرآقبّة الجودّة
QC inspector
ARAB Engineer
and Sr. Lead
QC Inspector
FAA, IA
Inspector
NDT/NDI
Level II
Inspector
Jeddah
Dhahran
Al-Hijaz .
Thanks!!