I want to say a big thank you. This solved my issue and I did it myself. I got the relay at Autozone for $40 and viola, my fans started to work. No more overheating. Again, Thank you....great job
Your eight year old cooling fan relay article is one of the best. I wish the index and lookup tools would get better so that all the videos could be listed by make, model, year, range-of-similar models,engine type, subsystem_name, and count of likes. My car is 25 years old and I am now a more systematic mechanic. I wish the UA-cam method of indexing car repair videos would get better than the present hunt and peck system.
I have been a certified tech for 45 years and I remember the chrysler has a solid state relay (as you have shown) but another model has the ss relay under and behinf the left front headlamp. It is very hard to get at. I have found that it is a lot faster to remove the left front headlamp assy. and with a 2" holesaw, drill a hole to the rear of the fiberglass rafiator support. Then you can reach the screws that secure the ss relay.
Thank you very much for your prompt answer . The diagram of cooling fan circuit show on youtube " Crysler 300C Henmi diagram of cooling fan circuit." Thanks !!
The electric engine cooling system on these vans is a bloody nightmare. I've been thinking seriously of wiring a direct power circuit with a toggle switch in the cabin to the fans for the times that the automatic system goes haywire, which seems to be about every other month.
408knw I know this post is 4 years old but just can't resist adding my 2 cents.... It's not just the cooling electrical, the WHOLE ELECTRICAL system in these vans are insanely problematic....ugh. The stinking poor soldering on the instrument cluster has caused people to spend thousands of dollars in "trying" to fix their vans. The "Anti-Theft" system has caused the same problems, and the electrical issues list could go on forever, sadly. I do LOVE my van(1998 Chrysler Town & Country lxi 3.8) and she's been great to me even at 240,500 miles now. I'll keep running her until she just totally 1000% dies! Ever vehicle has problems and those common problems to each of them. I know most of the problems with these vans and know it inside and out. I sure don't want to have to learn a list of problems for another vehicle 😉, especially why she's still running and I'm still happy with her!
No shit I'll never buy. Town and country again. I bought it in the winter time the temp was fine now that its summer my fans wont come on there are so many different thing that came make the fan not come on NEVER again
yep thank you! i am replacing the relay to my radiator fan on my jeep liberty renegade, 2002. seems it is also wired to the airbag relay..which i think may be the recall issue for jeep liberty recalls and causes the radiator relay to notwork therefore causing the overheating issue for the relay to keep going out to the fan! only expert geniuses coulda figured this out. ;) why cant chrysler??? and how do i fix it completely i wonder...guess chrysler still dont know either.
For my 1993 Dodge Caravan, 314,000 miles I am going back in to figure out the cooling problem. I seem to have blown a crack in the radiator tank after I forgot to turn on the manual cooling fan. This time I am setting up a resistor device to simulate the temperature sensor. I made a relay tester and I am going to listen for relays clicking before attaching the fan plug.
I would like to know where you got the wiring diagram of the chrysler radiator cooling fan relay. I thank you for this video. The Haynes manual diagram doesn't have the 1-4 pinouts on the diagram, just a block drawing in which the signal wire LTGRN/BluTracer and the Power Out to the fans are reversed. It cose me a BCM over the weekend when I installed a new wiring plug relay combination. The generic plug the wire color coding was completely wrong. The diagrams that are all over the internet are the same as the Haynes manual. Anyone reading this, if you get a kit with the new plug pay no attention to the wire color coding, match your existing plug. I would have done this but the plug had already been replaced once so I had some question as to whether my issue might be related to the computer signal and the power out might be reversed. In retrospect the power out from the relay is obviously a larger wire. DOH!!
I have 300C HENMI 2008 Model which An electric fan broke and a new fan was installed, but it did not work, so the fan worked when electricity was applied directly to it. We confirmed that electricity was coming to the relay, but we are not sure why electricity is not coming to the fan. I am interesting to have new power supply circuit for fan. How much Amp of fuse and relay do I need to set up with fuse box for direct power? Or do you have any idea to have power for electric fan ? Looking forward to hear from you. Thank you !!
You are approaching it the wrong way. If you power it externally you will bypass the computer's ability to control it and possibly overheat the engine. You should be fixing why power is not coming from the relay. Send me the diagram of your cooling fan circuit and I will try to help you.
Why is my fan cutting right back off(at idle)within 2 to 5 secs after coming on? 2.5l Sebring, conv. And it causes pressures in ac system to fluctuate of course, but when it does cut on for those couple secs, pressures on ac gauge drop. And when it sits not on, they rise of course, until they get high enough to cut fan back on for couple secs, then it cuts right back off, again, at idle. Other conv I have doesnt do that. Fan stays on for a bit when it comes on. Not cuts right back off. Coolant temp sensor? Relays have been swapped and swapped with known good ones. Doesnt do anything diff. No codes ever. Weird. Thx for any input.
Wow a bad relay cause the battery to be drained. I have a PT Cruiser that's started having a weak battery for some reason, and I've not heard the fan come on lately.
I have a 1993 Chrysler town and country, there is only one fan motor with a four wire plug. I am not able to locate the relay as it is not in the same location as your video shows. I have bought manual and looked at every website and most refer to different years than 93, and none of them say where it is located. Can you refer me to any specific info for the 93 on location of this relay?
can you help 2006 dodge stratus cond fans will not come on only when hight side gets to 500 psi replaced psi switch did not help were do i need to look
I tested the fan and it works. Temp on dash never gets to the halfway mark so I'm guessing that is why the fans never turn on even when a/c is working. Is the temp sensor not working correctly? Should I replace relay? Engine seems and smells hot, even on short trips.
I got a p0480 code on my 05 durango I changed the fan relay an the fan turns on but it still over heats a little an check engine code keeps coming back what can it be?
I have had my 97 caravan in the shop 3 times in the last month replacing that relay. What can cause it to keep going bad? The shop put a whole new fan in because they said the fan was drawing too much power. A week later the relay went out again. I'm done with that shop. Is this a computer problem?
I have an '04 Grand Caravan and the AC does not work even after recharging it with both sealant and refrigerant. I have also never seen the radiator fans work. So I replaced the fan relay switch apparently now for no reason. The fans still have never turned on but the temp gauge constantly reads below 1/2 mark. Should those two fans kick on frequently or are they only there for idling in hot weather? So confused. ha ha
I have a 2002 Jeep Grand Cherokee, I have replaced (all new) electric fan, fan relay, thermostat, front temp sensor. The fan is still not working but the AC is working, and yes the motor gets hot as hell, temp gage is hitting temps over 240. I do have codes, 1490 and 1489. Please help. Dennis
P1489: High speed radiator fan relay circuit malfunction. P1490: Low speed radiator fan relay circuit malfunction. Possible causes Faulty Radiator Fan Control Relay Radiator Fan Control Relay harness is open or shorted Radiator Fan Control Relay circuit poor electrical connection. The Powertrain Control Module (PCM) has detected an open or shorted condition in the radiator fan relay circuit Possible symptoms Engine Light ON (or Service Engine Soon Warning Light) P1490 Jeep Description With the key on or engine running, system voltage over 10v, the Powertrain Control Module (PCM) detects a shorted or open condition in the low speed Fan Relay control circuit for 3 seconds. Test the fan relay resistance (it should be 30-70 ohms). Refer to code repair chart in other manuals or media. This info found on engine-codes (dot) com
Hey thanks for the reply. Man did I complicate maters! Originally the key reader failed I brought a used computer along with the key, key reader, door handle and ignition cylinder. They all worked fine but it was out of a 2004 car. Different fan control circuits. Brought yet one more computer, this time from a 2002 and yeh ol' Jeep rides again. I think I am the only idiot that keeps put money into a 15 yr old jeep with 230km on it. Stop the bleeding!!!!!!
Only one fan comes on. Are both supposed to run or are they controlled separately? I have a 05 town & country. I replaced a leaking rad and the thermostat.
There are two power levels. 30% and 100% according to the video. Turning on the AC should make both fans run, I think. I'm working on a 2000 caravan now and there is only one power output from the relay, so that means that both fans run simultaneously and never separate unless there's a high speed relay somewhere, which there might be. So I don't know
I have a 2000 Chrysler Grand Voyager and fans wont turn off even when van is turned off. I have to pull fuse out to turn them off. Does anyone know what is what is the cause of this?
I have been a certified tech for 45 years and I remember the chrysler has a solid state relay (as you have shown) but another model has the ss relay under and behinf the left front headlamp. It is very hard to get at. I have found that it is a lot faster to remove the right, sorry front headlamp assy. and with a 2" holesaw, drill a hole to the rear of the fiberglass rafiator support. Then you can reach the screws that secure the ss relay.
I want to say a big thank you. This solved my issue and I did it myself. I got the relay at Autozone for $40 and viola, my fans started to work. No more overheating. Again, Thank you....great job
Dave Bambaloff
Your eight year old cooling fan relay article is one of the best. I wish the index and lookup tools would get better so that all the videos could be listed by make, model, year, range-of-similar models,engine type, subsystem_name, and count of likes. My car is 25 years old and I am now a more systematic mechanic. I wish the UA-cam method of indexing car repair videos would get better than the present hunt and peck system.
Excellent simplistic review of the process. More guys should explain things this way.
Doing the exact same rig .right now ..my phones listening so ..shhh..but thank it & YOU for this one
I have been a certified tech for 45 years and I remember the chrysler has a solid state relay (as you have shown) but another model has the ss relay under and behinf the left front headlamp. It is very hard to get at. I have found that it is a lot faster to remove the left front headlamp assy. and with a 2" holesaw, drill a hole to the rear of the fiberglass rafiator support. Then you can reach the screws that secure the ss relay.
Thank you very much for your prompt answer . The diagram of cooling fan circuit show on youtube " Crysler 300C Henmi diagram of cooling fan circuit." Thanks !!
Is there a way to check the comand wire with out a PowerProbe?
Very helpful thanks 😊
Nicely done, can you please tell me where to find the probe that you are using?
Great video
The electric engine cooling system on these vans is a bloody nightmare. I've been thinking seriously of wiring a direct power circuit with a toggle switch in the cabin to the fans for the times that the automatic system goes haywire, which seems to be about every other month.
408knw I know this post is 4 years old but just can't resist adding my 2 cents....
It's not just the cooling electrical, the WHOLE ELECTRICAL system in these vans are insanely problematic....ugh. The stinking poor soldering on the instrument cluster has caused people to spend thousands of dollars in "trying" to fix their vans. The "Anti-Theft" system has caused the same problems, and the electrical issues list could go on forever, sadly.
I do LOVE my van(1998 Chrysler Town & Country lxi 3.8) and she's been great to me even at 240,500 miles now. I'll keep running her until she just totally 1000% dies! Ever vehicle has problems and those common problems to each of them. I know most of the problems with these vans and know it inside and out. I sure don't want to have to learn a list of problems for another vehicle 😉, especially why she's still running and I'm still happy with her!
yes
No shit I'll never buy. Town and country again. I bought it in the winter time the temp was fine now that its summer my fans wont come on there are so many different thing that came make the fan not come on NEVER again
Any advice with 2006 Chrysler 300 fans not turning on? Also, a/c sometimes blows warm air. Any help would be awesome!!!
I have same problem now. What was the outcome? Thanks
yep thank you! i am replacing the relay to my radiator fan on my jeep liberty renegade, 2002. seems it is also wired to the airbag relay..which i think may be the recall issue for jeep liberty recalls and causes the radiator relay to notwork therefore causing the overheating issue for the relay to keep going out to the fan! only expert geniuses coulda figured this out. ;) why cant chrysler??? and how do i fix it completely i wonder...guess chrysler still dont know either.
Thank u Sir
Because it's connected to the battery of the van possibly? 😉
For my 1993 Dodge Caravan, 314,000 miles I am going back in to figure out the cooling problem. I seem to have blown a crack in the radiator tank after I forgot to turn on the manual cooling fan. This time I am setting up a resistor device to simulate the temperature sensor. I made a relay tester and I am going to listen for relays clicking before attaching the fan plug.
that probe is sweet!!
help put in new 40 fuse and new fan engine light still on says need fan everything working fine
I would like to know where you got the wiring diagram of the chrysler radiator cooling fan relay. I thank you for this video. The Haynes manual diagram doesn't have the 1-4 pinouts on the diagram, just a block drawing in which the signal wire LTGRN/BluTracer and the Power Out to the fans are reversed. It cose me a BCM over the weekend when I installed a new wiring plug relay combination. The generic plug the wire color coding was completely wrong. The diagrams that are all over the internet are the same as the Haynes manual. Anyone reading this, if you get a kit with the new plug pay no attention to the wire color coding, match your existing plug. I would have done this but the plug had already been replaced once so I had some question as to whether my issue might be related to the computer signal and the power out might be reversed. In retrospect the power out from the relay is obviously a larger wire. DOH!!
Thank you!
I have a neon fault relay 98 when they connected it directly affects the a / c garment
that a cool tetster were can i get one and how much are they
Thanks man!!!!
What's the name of that tool you are using to check the power. It looks like you used the same tool to supply the power for the fan operation test
I have 300C HENMI 2008 Model which An electric fan broke and a new fan was installed, but it did not work, so the fan worked when electricity was applied directly to it. We confirmed that electricity was coming to the relay, but we are not sure why electricity is not coming to the fan. I am interesting to have new power supply circuit for fan. How much Amp of fuse and relay do I need to set up with fuse box for direct power? Or do you have any idea to have power for electric fan ?
Looking forward to hear from you. Thank you !!
You are approaching it the wrong way. If you power it externally you will bypass the computer's ability to control it and possibly overheat the engine. You should be fixing why power is not coming from the relay. Send me the diagram of your cooling fan circuit and I will try to help you.
My fan only runs when a/c is on?
Relay was changed and temp sensor… still the same issue?? Help
Why is my fan cutting right back off(at idle)within 2 to 5 secs after coming on? 2.5l Sebring, conv. And it causes pressures in ac system to fluctuate of course, but when it does cut on for those couple secs, pressures on ac gauge drop. And when it sits not on, they rise of course, until they get high enough to cut fan back on for couple secs, then it cuts right back off, again, at idle. Other conv I have doesnt do that. Fan stays on for a bit when it comes on. Not cuts right back off. Coolant temp sensor? Relays have been swapped and swapped with known good ones. Doesnt do anything diff. No codes ever. Weird. Thx for any input.
Wow a bad relay cause the battery to be drained. I have a PT Cruiser that's started having a weak battery for some reason, and I've not heard the fan come on lately.
Cool probe !
I have a 1993 Chrysler town and country, there is only one fan motor with a four wire plug. I am not able to locate the relay as it is not in the same location as your video shows. I have bought manual and looked at every website and most refer to different years than 93, and none of them say where it is located. Can you refer me to any specific info for the 93 on location of this relay?
Where did you get your tester?
can you help 2006 dodge stratus cond fans will not come on only when hight side gets to 500 psi replaced psi switch did not help were do i need to look
I tested the fan and it works. Temp on dash never gets to the halfway mark so I'm guessing that is why the fans never turn on even when a/c is working. Is the temp sensor not working correctly? Should I replace relay? Engine seems and smells hot, even on short trips.
Also, the relays for sale on the internet come with wiring to rewire unit. Do you suggest buying it?
do you think this relay switch will be in the same location on a 2000 grand caravan
very good video I would like to alludara I have a town country 98 and do not turn on the fans and change the relay and still not turn on
I got a p0480 code on my 05 durango I changed the fan relay an the fan turns on but it still over heats a little an check engine code keeps coming back what can it be?
do both of my fans suppose to work on my LHS Chrysler 2001
I have had my 97 caravan in the shop 3 times in the last month replacing that relay. What can cause it to keep going bad? The shop put a whole new fan in because they said the fan was drawing too much power. A week later the relay went out again. I'm done with that shop. Is this a computer problem?
hi my dodge caravan 2.4L engine coolant on at 224.F .
is the temp too high?
Did you get this figured out yet?
I have an '04 Grand Caravan and the AC does not work even after recharging it with both sealant and refrigerant. I have also never seen the radiator fans work. So I replaced the fan relay switch apparently now for no reason. The fans still have never turned on but the temp gauge constantly reads below 1/2 mark. Should those two fans kick on frequently or are they only there for idling in hot weather? So confused. ha ha
The fans are controlled by the cars computer. They only come on at certain times when the computer tells them to work.
Well shit if we all had the mechine would be awesome but do it with something else like a wire to the battery or something with no high tech
My dad wants a 2003 pts cruiser how to fix the pts cruisers air conditioning have any sugtisuins?😉
Yes, take it to a shop where it can be diagnosed.
ok and if no command??
I have a 2002 Jeep Grand Cherokee, I have replaced (all new) electric fan, fan relay, thermostat, front temp sensor. The fan is still not working but the AC is working, and yes the motor gets hot as hell, temp gage is hitting temps over 240.
I do have codes, 1490 and 1489. Please help. Dennis
P1489: High speed radiator fan relay circuit malfunction. P1490: Low speed radiator fan relay circuit malfunction.
Possible causes Faulty Radiator Fan Control Relay Radiator Fan Control Relay harness is open or shorted Radiator Fan Control Relay circuit poor electrical connection. The Powertrain Control Module (PCM) has detected an open or shorted condition in the radiator fan relay circuit Possible symptoms Engine Light ON (or Service Engine Soon Warning Light) P1490 Jeep Description With the key on or engine running, system voltage over 10v, the Powertrain Control Module (PCM) detects a shorted or open condition in the low speed Fan Relay control circuit for 3 seconds. Test the fan relay resistance (it should be 30-70 ohms). Refer to code repair chart in other manuals or media. This info found on engine-codes (dot) com
Hey thanks for the reply. Man did I complicate maters! Originally the key reader failed I brought a used computer along with the key, key reader, door handle and ignition cylinder. They all worked fine but it was out of a 2004 car. Different fan control circuits. Brought yet one more computer, this time from a 2002 and yeh ol' Jeep rides again. I think I am the only idiot that keeps put money into a 15 yr old jeep with 230km on it. Stop the bleeding!!!!!!
I just want to know where you got that test light/device?
+Erin Alcorn ebay or ali express
my 2008 chrysler engine light is on. my radiator seems to stop. how to fix?
my radaitor fan stops.
Only one fan comes on. Are both supposed to run or are they controlled separately? I have a 05 town & country. I replaced a leaking rad and the thermostat.
There are two power levels. 30% and 100% according to the video. Turning on the AC should make both fans run, I think. I'm working on a 2000 caravan now and there is only one power output from the relay, so that means that both fans run simultaneously and never separate unless there's a high speed relay somewhere, which there might be. So I don't know
Thanks for the info. I think I will go to the dealer mech. and ask.
Smart move, Sir.
@@BillyGoat4x4 Both fans should come on. The speeds are actually variable but both should work whenever the PCM tells the fan to work.
what probe are you using?
I have a 2000 Chrysler Grand Voyager and fans wont turn off even when van is turned off. I have to pull fuse out to turn them off. Does anyone know what is what is the cause of this?
+Dawn Meredith chech sonsor or control module
auto uk n
Code po480 on my 04 cruiser
hmmm
Sorry, I really blew that post. Please remove the RIGHT headlamp. So sorry
To noisy to hear you
I have been a certified tech for 45 years and I remember the chrysler has a solid state relay (as you have shown) but another model has the ss relay under and behinf the left front headlamp. It is very hard to get at. I have found that it is a lot faster to remove the right, sorry front headlamp assy. and with a 2" holesaw, drill a hole to the rear of the fiberglass rafiator support. Then you can reach the screws that secure the ss relay.