Chrysler Town & Country / Caravan - P0480 Cooling Fan trouble

Let's have a go at this 2007 Chrysler Town and Country that has an engine light on with a code P0480. Pretty classic problem on these beasts and I'll show you how I diagnose these cooling fans.
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South Main Auto Repair
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.

[@chordarrow1]

Always a pleasure learning from you Eric. Thanks for being there and willing to help.

[@gregwells2331]

Another great SMA production Eric, thanks for the mythological troubleshooting.

[@Megaroshe]

Thank you so much for posting this video! I am a 59 year old somewhat disabled woman with next to no money and I have this exact problem. I have spent the last hour searching for a solution on line and came across your video which made the fix look almost as though I could do it myself - almost - if I have the right tools. The only tool I do not have is the one for removing the rivet. However, I am going to check for the price of the part and find out if some kind fellow will help me do this. All because you took the time to to film the repair & post it! What a great guy you are!. God bless you and yours richly! Shelley in southern Saskatchewan, Canada

[@sidradio]

You guys are pretty awesome. Your videos have saved me countless hours of frustration and my sanity. My wife insisted on a used 2007 T&C even though they are notorious for AC and wiring issues. I voted Honda Odyssey, she said we'd get more van for our money. Lol....In the ONE year we've had it I've completely rewired both sliding passenger doors and fixed the rear AC. Now there is no air blowing out of the front vents. The rear vents are fine, however the front vents don't move air at all. When at highway speed you can feel cool air coming out of them slightly,but not enough to make any difference. We live in Mobile, Alabama, so we know HOT!!!! Now that I've watched this video I'll be sure to check out the relay. I'm pretty sure that's the problem, however since I don't have a super-sweet rivet gun (just Glock, Sig Sauer and Walther PPQ's) I'm concerned about how to fasten the relay. I know you discussed it in this video but I couldn't hear it that well. Is it possible that you could respond to my question on how to attach the fan relay without a rivet tool? Thank you, and God knows you have plenty of job security servicing Dodge vans. Too bad they can't seem to understand that sales will increase when they stop selling vehicles that fall apart in 4 years! Honda seems to understand that concept quite well!

[@davidgriffiths2069]

I bought a cheap test light. Did step by step with Eric on the video. I needed a relay. changed it as if I knew what I was doing. Thanks!!!

[@wyattoneable]

Love the low tech diagnostics for us DIY'ers. Thanks buddy.

[@SouthMainAuto]

+wyattoneable No prob!

[@12volttech5]

Just a word of CAUTION, when probing control wires do not use this method on most/all vehicles! use a Digital voltmeter or a computer safe circuit tester. Eric O is a trained professional and knows where and what to probe with his scope on a rope (test light). When Eric was probing the control wire at 6:30 and heard the vehicle chime it sure got his attention quick.

[@denniswilkinson1118]

Hard to beat the power of knowledge. Great video Thanks.

[@johnw7278]

I had this same problem but it was an open wire under the battery tray. battery acid ate through the wiring harness. lesson learned - keep the battery terminals clean!

[@ponyhorse127]

Great video Eric!!!!...thank you for showing how to diagnose the cooling fans!!!!....hey, there was Sheba supervising all the activities around the shop!!!!..... :) :) :) :)

[@PineHollowAutoDiagnostics]

Love seeing the "scope-on-a-rope" master in action! Pretty cool how you checked the low-amp control circuit with a test light too. I would back that up with a quick relay bypass test with a jumper wire and measure the fan current draw just for kicks :) And the good old "time constraint" excuse to not use a real scope...don't pick up bad habits now Eric haha!

[@SouthMainAuto]

+motoYam82 Haha hey man I am in a real big hurry and have no time for that! Come on you know the drill haha. I was thinking of doing a amp draw test but I came up with the question... what is good with out a known good to compare too. One thing I do know the start up current and running current is less than 40 amps ;)

[@rjdimonda]

This is an important comment cause an old fan can draw too much power and cause premature failure of the relay. This test should be shown. But what is a reasonable fan draw current/

[@tctwg1]

Pine Hollow Auto Diagnostics 🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕

[@antoniomanzano4150]

@@SouthMainAuto If I make the correct adjustments in the harness, do you think I can fit that fan relay in a 96 Town Country? It's that I see the fan relay from 2003 onwards being more reinforced, like the one you put . thanks!!!

[@Photostudioww]

I just did what u said in this vid to a 2005 Pacifica and it's the same process. Great video! Thanks

[@bjre.wa.8681]

Mine turn out to be the AC cabin temperature control unit in the dash. That was a long ordeal finding that issue

[@vincedelpezzo8209]

Excellent info Eric ... I was following with my Dodge schematic to see operating path

[@Saltbox97]

Great Video. The only extra thing I would have liked to have seen before ordering a relay is to see you jam 12v to that fan circuit to make sure the fan actually spun. Just extra confirmation that the fan was good.

[@grawey77]

I own 2 of the 2001 through 2007 generation vans. They are very service friendly. I do most of the repairs myself. Rear plugs and upper O2 sensor are not hard you just pull the wiper tray off which is simpler than you think. The radiators come out easier than the generation before it. The heater core can be swapped out if necessary without the dashboard being removed. Brakes, suspension, window motors, and power lock actuators are all very easily done. I do work on other peoples vans because they are not difficult for me to do so. The one downfall is that if you do not have the lower body cladding on the vans which is a premium option they rust quicker. Proper washing and waxing of the van would avoid this, but not to many owners care about them enough to do it as often as it should be done.

[@johnmurphy9688]

Another great vid Eric. Your a legend ,fella.

[@thomaspetersen6495]

Town and country, gravy! Your cool Eric O.

[@johnnyversaci7091]

Thank you brother I don’t have inoperable fans, well 1 of them isn’t coming on when the thermostat opens. Looks like both should definitely come on together and I couldn’t find that info. I had a feeling your video would show them both running since u are always thorough. I assumed both should come on but I’ve seen other people say 1 is for ac and 1 is for the cooling system, didn’t seem right but I appreciate u always showing the end result🙏

[@coldfoot99]

Thanks for this one, got my wife's Caravan like that one sitting about 10 feet away from me right now. Fans work, now. But if they die I will be ready.

[@davidbradley3982]

good job Mr O.. i have the 91 version 3.8 AWD LWB...its a beast.

[@FordTechMakuloco]

Very common failure point on our Crown Vics too.

[@SouthMainAuto]

+FordTechMakuloco Oh yeah but at least they mount them out on the shroud where ya can get to them! Just had to fix one on a Grand Marquis last week actually :)

[@int53185]

8mm on those headlight bolts. Cool to see Hannah helping out in the shop. I always get my daughter to help if I need an extra pair of hands.

[@SouthMainAuto]

+James Last She is a good worker :)

[@SteveP-vm1uc]

Great video. To the point and showed how to do it with minimal tools. 5*s

[@bernardaflores1720]

Thanks for making this video, I'll add a clip to my arsenal parts to bypass it if I have a problem on the road.

[@dwoodog]

Thanks for the video. I got a 1988 camaro with the opposite problem. The fan runs all the time. My suspicion is the last owner messed with. Couple quick looks and I don't see anything messed with, but needs more investigation. Anyways my point is your motivating me to fix it, not just say...whatever, atleast the fans on, not off.

[@heinrichwall5581]

Very well done, just what I needed.

[@anyheck]

A day without SMA is like a day without sunshine.

[@mikebrennan4534]

also a good idea to check the amp draw on the fans. as the fans age the amp draw gets higher and burns up the relay and sometimes even the wiring. have seen several of these come back due to fans being the root of the problem. happens alot on the jeep grand cherokee with same set up. just some food for thought.

[@jcraddock3146]

Yup that was my problem on 2005 Chrysler Town & Country 3.3L engine thanks👍🏽

[@CS-wk5jm]

yay! the classy greeting is back :)

[@SouthMainAuto]

+EastFKN Van Lol it is an old vid ;)

[@CS-wk5jm]

+South Main Auto Repair oooh :( Pretty please come back with that again :D

[@aloofloveable]

Thank you very much for the video I changed 2 relays and still had the problem But thanks to you my problem be solved

[@zacthegunguy899]

Your video that shows how to test and replace a ignition switch was good I replaced mine but come to find out it was the starters tapped on it and it started up so

[@crapper1]

2 things you will see in any SMA repair video either brake cleaner or the Scope on a Rope. Glad it was an easy quick fix electrical problems on my truck are hardly ever that easy

[@SouthMainAuto]

+crapper1 sometimes both too

[@ytwhite5930]

Right on... I thought this was going to be a head ache. Thanx so much Y-T

[@mawolff23]

I love how interested Hanna is in this. I wish more girl/ kids in general were more interested in learning life skills.

[@KRACUSMCRAE]

Yess

[@benmorris5046]

+WRX Mike I'm only 14 but my dad taught me loads when I was younger... I'm pretty savvy with cars, but I consider myself a small engine master :D

[@SouthMainAuto]

+Ben Morris Small engines are really enjoyable to work on. I loved messing with them as a kid, heck I still do!

[@chiefx111]

I've had this same issue too before on one of my old cars, pretty sure it was a Pontiac. Very easy fix though I'd say

[@grungemonkey1395]

Thanks for all the videos. They always help. Any advices though on testing the relay connection with a multimeter? I don’t have that cool probe you got.😁

[@komerwest9520]

What can I say but THANK YOU! 😃

[@bchrisl1491]

Looks like a solid state relay.

[@mikechiodetti6737]

Real nice place to put that relay! Great Video! Does that rivet tool come with multiple rivet heads? NICE TOOL! That Astro company seems to have great tools!

[@sheaholt1813]

If I turn my ac on and fan works does that mean the relay is still good and will come on when motor gets hot

[@Checkdemfaxs]

awesome... thanks.. I have the same code.. Had it all spring and summer.. Time to rid of it now.. Thanks

[@carslover3509]

i learn to much thanks friend

[@63256325N]

Thanks for the video.

[@MrGibratan]

Very good video thanks for the info you save me some bucks you the best

[@gordoncindy9386]

Gotta say I like this intro the best...

[@tedthornton7791]

Daughter's 03 , 3 3, Caravan. Replaced Brake Master Cylinder due to pedal sink started car drove 1/4 mile left front brake was dragging, replaced front left caliper( old one stuck wore out pad damaged caliper)both front brake pads, drove 1 mile gased up with engine off, restarted drove back 1 mile. Next day bled all wheel cylinders with engine off. Then crank but no start. Codes 118, 123, 508, 509, 1193. All codes were present on old pcm and now on new one. Replaced Crankshaft position sensor, tps sensor, coilpack, coilpack connector, spark plugs , pcm.Gotta iod parasitic draw. Remove iat fuse draw disappears, returns when fuse reinserted. IAT clicks when fuse is reinserted and sometimes radiator runs briefly simultaneously then quits within seconds. Antitheft light doesnt come on , never. Not with key in start position, not when arming alarm with fob or key. New batteries in fob, tried 2 different keys. Tried charging batteries, tried different battery , tried jumping . All fuses good, all fuse hot legs above 12 volt except IOD. ASD clicks with key in run position. Fuel pump runs a few secs when key in run position. Lights will blink mysteriously sometimes. It Did this before new pcm and now does it with new one. Reset computer several times. Help a brother Eric.

[@OtherSarah2]

that sure sounds like a bad ground -- pretty much systemwide.

[@robbloforese]

Thank you for the video - very helpful. :)

[@_N_B_0496]

Wow, thanks so much. I can’t believe that after replacing the radiator it took me replacing the fans and the cooling fan relay before I decided to find a video and simply check the fuse!!! I guess my fans went bad and burned the fuse.

[@haywardsautomotive6156]

Nice & quick with a scope on a rope. Just got my Astro die grinders from your store last week along with some abrasives and love the angle die grinder. Nice fit, lots of power for a great price! I normally use my Snap-on air drill but the Astro is so much lighter & compact so my Snap-on air tools are going to get a few more Astro companions to include "Big Nasty" and the Nano's. The Astro's can get into a lot of tight places...small but powerful.

[@SouthMainAuto]

+Hayward's Automotive Does this link work??? onedrive.live.com/redir?resid=C7BE1B571FE20297!1454&authkey=!AAVXfhY0YXtxNoE&ithint=video%2cmp4

[@haywardsautomotive6156]

+South Main Auto Repair Hey where you been hiding that video? I love my Snap-on tools but I try and buy the best & baddest tools on the market. Knipex has the best pliers and I have a drawer full of both Snap-on & Knipex and Knipex are simply better. I've watched every video on your channel and am impressed with all of the Astro tools so I figured I'd buy the Astro die grinders & set them up for brake hub cleaning & rotor resurfacing and love them. Next will be "Big Nasty" and then I'll get the Nano's. I love my Snap-on MG725 w/810 ft lbs of torque but I think my Astro air tools will become the preferred tool in my hand. The video was awesome and I'd rather see a tool review done by a mechanic in head to head competition & let the best tool win! If it holds up to the daily use of a professional mechanic where the majority of time we are abusing tools then it'll probably be in my shop.

[@SouthMainAuto]

Well my tools get beat just like in any other shop so I think just like you... that is the real test IMO. As far as that vid... well it is an exclusive you are the only on who has saw it. I put it together thinking I might put it up but then never did ya know... People think I work for astro haha

[@haywardsautomotive6156]

+South Main Auto Repair Thanks it was a great head to head video but you do get a smirk when you talk about Astro...:-) Looks like the VerusPro is holding up. Thanks again for the videos b/c I hardly watch TV anymore

[@SouthMainAuto]

I don't even have a TV at home lol. I get a smirk b/c they are so cheap to buy and from what I can tell they hold up. What the heck have I been wasting my money on all these years haha! The Verus Pro has been outstanding so far!!

[@Butterflytaxidfw]

Can you please upload a video on a later model Dodge Grand Caravan 2011 and up on troubleshooting Cooling System specifically the ECT and the Fan cooling. If engine overheats during idle etc etc

[@letsthinkitover1]

I don't have any codes but my passenger side fan comes on. You smart with the power screwdriver. Zap zap gets it's done fast. you got to drill it out.

[@MaicSalazarDiagnostics]

Good video Eric, one thing I always do is check the amperage of the fans after repair, to make sure they are fine, otherwise that relay might fail again! Just a thought

[@SouthMainAuto]

+Maic Salazar What would you consider is good? Just curious is all...

[@MaicSalazarDiagnostics]

+South Main Auto Repair I think a healthy fan system should have a in rush amperage of 15 amps and as soon as stabilizes around 8 or 9 amps. Off course this would vary a little depending on manufactures!!

[@MaicSalazarDiagnostics]

+South Main Auto Repair Your videos are always great! Sorry to comment on what I think! Didn't do it to play smart! Just a point of view!

[@SouthMainAuto]

Oh no it is no big deal I was just curious. I think 8 or 9 amps is pretty low to be honest with ya. Blower motors in dash draw more than that usually. I guess my thought is , is if you have nothing to compare it to then in my mind it is just a number. It may be a good idea to gather that data and jot it down to start to find a "norm" though? Matter of fact I may just start doing that :)

[@davekleiboeker4614]

The fans are on the same 40 amp fuse which means the rush current should be over 30 amps. If you’re referring to each fan

[@efrainrivera3450]

My cooling relay on my dodge grand caravan is located in an easy spot I got wondering and found by part number on relay ordered one just in case thanks watch you all the time

[@normansmith7806]

Chrysler = job security :) Got to order me one of those rivet guns,I still have the old style.

[@SouthMainAuto]

+N Smith here ya go! astore.amazon.com/httpswwwy0837-20/detail/B000MQ9H4W

[@roadkill5333]

When you get your new style rivet gun, can I have your old style one. I never had a rivet gun.

[@normansmith7806]

+roadkill5333 -:)

[@toddbenson2689]

Ty, doing a 2003 tomorrow 3.8L tc

[@HarbingerofHyol940]

Oh god it's Barbara's "other" van! XD

[@SouthMainAuto]

+Harbinger of Hyol Haha!!!

[@rimmersbryggeri]

+Dick Fageroni Nice to see things done right huh?

[@curtisshelljr1998]

@@SouthMainAuto x. 1

[@nugget5103]

What's great about this is that you test your wires also to the PCM, so you can rule them out as being bad using this method. If this works, and your relay doesn't, then you know the harness connector isn't connecting or the relay is bad.

[@davestorm6718]

I ended up hot wiring the fan to a switch in the dash, just can't forget to turn it off (lol). Good fan, good relay, good wiring, bad PCM (not worth dropping a fortune on a new one as they're worth so little money anymore). Next failure will be the transmission *about 1 per 100K miles. Chrysler has never figured out how to make a transmission.

[@leesatrudeau7587]

I let a person borrow my 2005 Dodge Ram 1500 4.7 lt Magnum V8 and the fan blade flew off into the radiator. *** Advice don't lend your vehicle out if you don't know the person very well *** Anyways a couple months before that my ex got into a rear end collision so I no longer have a cooling fan control circuit or the wires that should be there. Now I don't have A/C or heat. I was wondering if there was a way to get around not replacing it all. TY for your time.

[@notwrkn2mch]

Ford focus same code 0480 which i already ordered the part , but now i know how to check the wire functions with my old trusty test light

[@stupidvids777]

I have 2006 town country base model the van breaks down weekly. my question to you is if the relay is bad will your car shut off because it starts to run hot.

[@frosty98412]

For the EGR here we reprogram the ECU and turn off the EGR, completely delete the map for it and block the passage on the intake with some kind of a shim instead of the regular gasket. After doing that you will never have EGR problems and you wont dump junk into your intake and engine.

[@MyTerryb]

My test light is my best friend in this field of trouble shooting electrical circuit..

[@wtbm123]

I like the rivet gun

[@keithkennedy9065]

nice job eric....good call using the drill. I could picture big nasty bouncing off and going right thru that a/c condenser. day ruined lol

[@SouthMainAuto]

+keith kennedy Oh but big nasty would have broke it loose :)

[@chpchp745]

I took my grill out instead of headlight. Only took a minute to pop the tabs out. Much better access and access. Thanks for electrical diagnostic tutorial though.

[@josepinto7149]

Me as well

[@MrAndrew520]

Thanks man !

[@baxrok2.]

What a beast.

[@AnhYeuEmMaiMai69]

love the cameo by Sheeba :p great video as always. Can you do a Subaru Brake video? those have 2 different caliper pins one with a rubber sleeve and one without. (I did my own brakes and found that the lower pin has the rubber insert) God bless and take care...

[@SouthMainAuto]

+AnhYeuEmMaiMai69 That is a very common set up on many brake systems. Here is an oldie I did : kzbin.info/www/bejne/rJCZoGmkZs-df9k

[@mitchdante1323]

Hi Thank you for getting me on the right track! 2014 caravan. Running hot in idle traffic only, gauge goes to 3/4 high. Then still in traffic the gauge drops to half, and I start traveling again and the gauge goes back to just below 1/2. I just had the thermostat replaced, didnt fix it! QUESTION PLEASE! It seems my fan doesnt come on until the engine gauge is 3/4 up. Then the fan kicks on and the temp gauge goes to half then just below half. WHat do you think?

[@jamesmiller3297]

Another win for the Scope on a Rope.

[@roadkill5333]

One two bbq, baby! One quick video, and a $300 fan fix! You can have the rest of the off! Tell the boss lady I said so!

[@alm7707]

My 03 caravan fans run but only when the engine warms up not when the ac is first turned on. Ac throws warm air until you get moving down the highway. I had a 3.8l but I put in a 3.3l about 3 years ago, Ac worked great until now.

[@johnkirby6700]

So what if the fan activates when the AC is running but not when it is off? I suspect the cooling sensor, the engine is really hot and the coolant is boiling but the fan never activates unless the ac is on. I did get a P0480 code though.

[@MrNiceGuyDSGC99]

How did you get it to flash the code like that? That was cool

[@rimmersbryggeri]

You could put a rivnut in since this seems to be a common repair. Makes it easier for the next time.

[@GodWasAnAlien]

Coolant temp sensor changed, relay changed, tested fans with jumper leads to the battery, both work. Checked 40A fuse, still good. Fans still never seem to come on when the car is running. What else is there on the circuit? Anything other than wires, and PCM?

[@AntonioClaudioMichael]

Super easy fix Just a Cooling Fan Relay and Not too hard good Video Eric O @SouthMainAutoRepairLLC

[@banshee107]

I get the same code for my 2012 Jeep Grand Cherokee. Fuse/ relay was changed, fans work perfect but vehicle runs cooler than normal. I have no idea what’s going on.

[@MasterScreenPrints]

I changed the relay, I had po480 also and it didn't work. I'm also having issues with TIPEM I guess I have to change that.

[@mosesdog2]

And riveted, proper factory!

[@helivesonforever]

Eric, you had me fooled! I was for sure that this would be a ground issue just like that turn signal switch video.

[@SouthMainAuto]

+***Classified*** I know right a Chrysler electrical problem with out a ground issue.

[@helivesonforever]

South Main Auto Repair Wish I got that lucky on my old town and country! Glad I got an odyssey instead. Still has some high mileage issues, but overall it's a higher quality van. 06 Odyssey EX-L.

[@SouthMainAuto]

Once you go Jap!!

[@SouthMainAuto]

***Classified*** I use to be a Chevy guy too... haha then I grew up and realized I only liked them because I liked fixing things... frankly when you own one that is all you do. Now I drive Honda because at the end of the day I just really wanna go home. I h=guess our priorities change when we get older .

[@helivesonforever]

South Main Auto Repair I guess that's how I am now. I'm younger than you, but it does always seem like my truck is breaking down. I've done so much to it too, whereas this van is nearly bone stock. Plastic and rubber components have been replaced, but it's got over 200k on it and the transmission and engine haven't been touched. Both of those have been replaced in my truck with a little bit more mileage. Isn't it a little hard to work on your own cars when you do it for a living all the time? That would drive me nuts. It would be like working after you got done working all day. That's really why I will never do it for a living, even though I do have fun with it.

[@hvacr24]

Rivot Gun !! Michigan colors!! go blue !! Great Vid!!

[@timothyverstrateii7513]

Thanks!

[@fluxstringer]

Wish you had a video on the 3rd generation caravan fan circuit. Mine is a 1999 and the constant fan problems has damaged my engine . Despite replacing the three control boxes involved twice.

[@davestorm6718]

Mine's going to the junk yard. Never again will I buy a Chrysler anything (nor a Ford anything). They've been making garbage for 50 years, neither have figured out how to design a transmission, either.

[@indiajesuslovesyou]

If i keep my caravan i need to move up near your shop!

[@raykrv6a]

Like how Sheba got her camera time. LOL

[@HFTONE]

Question. If the relay was stuck on the ON position could it cause the fans to remain on with the ignition OFF?

[@wyrtwister4260]

So , instead of being an old school off - on relay , does the module give variable speed control to the radiator fan / fans ? Thanks , :-) Wyr God bless

[@hamradioHam]

literally the same for 2005 pacficia , my fans come on when temp is 1/4 way in the scale, not even 1/2 way , so im replacing the fan relay, already checks and replaced the fuse for it in fuse box #13

[@Veghead]

2004 Grand Caravan. My AC stopped blowing cool. Radiators fans not turning on. Would replacing this relay allow cold air ? I hear compressor turning on. Isn’t overheating unless I’m in city. I do see some overflow. But temperature is good.

[@mustang49601]

I have a 2012 Chrysler Town and country.it has the front and rear heating and cooling.the a/c has started to malfunction.the rear is almost warm all the time now the front fluctuates.it get kinda cold then drops to warm.thought maby it needed freon went bought some with a gauge hooked it up and the freon level was reading full.what could be the issue?your help is greatly appreciated.

[@salemmohamed7691]

i love my car chrsler 2007 it is fantastic i can do alot of things by my self

[@Eeropolvasti]

Thanks for the video !!! Having huge problem with Plymouth Voyager 1998, 2.5 litre engine! Car was in a garage, where they pretty much screwed everything up, very unprofessional=(( It was fine before, only 56000 miles, owner took it there for minor tune up..., and oil change..., anyway, when car was returned, there was no oil,????, forgot to put in??, and radiator "after flushing'???, system was leaking, they "fucked up' the plastic plug, it was only half way in, I put a new one in!! Anyway, they did change radiator cooling fan resistor/ relay, I actually can see that, and also harness??? for that?? I don't know, why also harness had to be change, hoping it was wired right??? Now radiator fans don't go on at all,, car overheats, of course, in stop and go-traffic! I did change coolant temperature sensor, no help?? Then I did change coolant fan assembly, no help, actually old one is good =(((, but there is no signal to turn fans on, even you put AC on, or engine comes to normal running temperature??? Why no signal??? I tested fan relay, they replaced, seems fine, there is resistance between neg. and middle. = pos. pin, bad ones has no resistance, right?? PCM has to be OK, since car runs otherwise fine, what could be wrong??? Why no signal to turn fans on??? Thanks for your help =)

[@tedthornton7791]

Better than government work Eric. Getter done son.

[@solomonmartinez5550]

What if the test light doesn't come on when testing for pulse width modulated signal? You tested it around minute 7-8 in vid. How would you test the wiring then.

[@jefffrost982]

I have a 2013 ram CV van cooling fan come on when warm but then will not shut off do you shut the key off everything seems to check out but the check engine light stays on with this existing problem the same thing happens with the AC relay is good motor seems to run well.I can't find any confirmation that it uses a fan control module I don't think it does. Thank you for feedback

[@chrisfreemesser5707]

A Chrysler in the SubaruBay (tm) and NO brake cleaner? My wife was horribly disappointed Eric! ;)

[@SouthMainAuto]

+Chris Freemesser I know shame on me I will try to make up for it lol. I need to get a sooby to rip the head off or something!

[@chrisfreemesser5707]

+South Main Auto Repair We'll send you a few Subies down from Rochester. You can't swing a dead cat around here without hitting at least 2 of them.

[@chrisfreemesser5707]

+South Main Auto Repair We'll send you a few Subies down from Rochester. You can't swing a dead cat around here without hitting at least 2 of them.

[@SouthMainAuto]

+Chris Freemesser Send them down! I love my Subaru's! Easy money makers haha

[@matt-sn3fv]

when checking the pwm signal for the control side of the relay weren't you checking the 'off' time off the signal rather than the 'on' as the test light was connected to battery positive and the other pin had a constant ground. would the test work by connecting the test light to battery negative and look at the 'on' time of the signal? great vid as always

[@SouthMainAuto]

+matt Nope. This is a ground side switched like I mentioned in the video. Kinda the opposite of what you would think. The control side of this relay has a ground and a ground side switch PWM.

[@chrisatkins8732]

Does the 04 ram 1500 truck have the same circuit ? My fan isn't turning on and I replaced my whole condenser it's still throwing the p0480