Radiator Fan Control Relay?

If its a 4.0L engine its located in the power distribution box-see below 2-fan speed relay involved.

Here is the wiring diagram and relay location (below) along with some easy guides to help you with the testing.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and in case the motor is bad which happens alot

https://www.2carpros.com/articles/replace-electric-fan-motor

Check out the images (below). Please let us know what happens.

Here is the fan control module (below)

It will show up on the cooling fan EWD as I've provided.

P1489. High Speed Fan Control Relay

P1490. Low Speed Fan Relay Circuit

Above these 2 relays is a hydraulic cooling fan module it is not a relay and only applies to 4.7L engine.

The coolant temperature sensor feeds the computer the engine temperature. The computer decides whether only one fan is needed or 2 fans depending on engine temperature and AC load-Have your computer tested its jobs is to energize the appropriate relay as needed.

Hi for the person that was looking to find the radiator fan control rely, you have to remove the front bumper cover to find it. and it is located under the passenger headlight after you remove the bumper cover.... I had the same issue trying to find it.

Dean

Here are the engine wiring diagrams if anyone needs them (below)

Where is the cooling fan relay located.

In the power distribution center next to the battery

See the guide below on testing relays, it will help

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Attached below you will find the wiring diagram for the cooling fan as well as the relay location

Where is the relay switch for the radiator fan motor located?

Under passenger side head light mounting panel. Both headlights must be removed along with the hood latch and mounting bracket to gain access to relay... Grand Cherokee







Thanks for using 2CarPros.com!

Engine Cooling problem
1999 Jeep Cherokee 6 cyl Four Wheel Drive Automatic

Were is the cooling fan relay on this model

It's in the power distribution center, under the hood.

I need a schematic for replacing the relay for my mechanic....can you help?

Hello, I take it since your mechanic cannot find the relay it is a Grand Cherokee not a Cherokee. The relay is located Behind Bumper Facia, Below Right Headlight...

The relay on a Cherokee is located in the Power Distribution Box under the hood

2001 Jeep Grand Cherokee 4.0 6 cyl 85M miles. The car overheated the other day and threw a P1491 code causing the Check Engine light to come on. I was in heavy stop & go traffic. After letting the car cool down for 45 mins I proceeded to destination and the temp stayed normal, 210 degrees. I checked all cooling systems and all seems to work. The electric fan comes on when the AC is switched on and or when the engine reaches temp. The electric fan doesn't turn as agressively as I have experienced in other cars though. Normally they torque right up to speed, this one slowly gets there but doesn't move the air I thought it would. The fan blade moves freely with no binding so it's not seized up any. Could the fan be bad or maybe the relay can't handle the currrent the fan wants to draw> Anyone have any ideas????

Thanks

Richard

I think your vehicle has two relays one for slow fan speed and one for high speed. It also could be a clogged radiator. If you haven't changed the coolant from the factory, that is the problem as the OEM coolant dies after about 40K miles and turns to juck in the radiator.

I didn't realize there were two speeds to the fan. I unplugged the fan and ran a full 13 volts to it and it ran the same as it did when plugged in. I just wasn't happy with the fan speed and the amount of air it moved.
Thanks

Hello I'm just to resolve why my 2001 jeep cherokee when it's Idling the temp goes high and the fan won't come on at all trying to find if it's the relay or the heating sensor if there is

Your probable causes here could be the fan motor itself, fan relay, coolant temperature sensor or the engine temperature gauge switch and computer controlled of the fan relay-

Six cylinder four wheel drive automatic

What would cause the electric cooling fan switch not to work and where is it located?

Hello,

Here is the cooling fan wiring diagrams so you can see how the system works. There is no switch that runs it just the PCM and a relay with a fuse. Here is the relay location and a guide to test the relay and power.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (below). Please let us know what you find.

Cheers

I had this problem it was the relay. Thanks for the guides.

Where is the cooling fan relay located and how do I change it. My fan quit running and I know the fuse is good. I had this problem 3 years ago and the relay was replace then at the dealer. I would like to do it myself but cannot find it. Any help would be appreciated.

the fan relay in the 2001 cherokee is in the relay box which is located in the engine compartment on the pass side of the motor in a long black plastic box. On mine it is right next to my coolant overflow bottle. The relays for many parts are located there and the relays are labeled on the top of the box which comes off the bottom part. Many of the relays are interchangeable so you can remove the fan relay and try another 5 prong relay to see if that is your problem.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers

Where is Fan Relay located? Do we replace Fan Assembly to correct idle overheating?

Hello,

Here is a guide to help you test the relay and the relay location below.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Thanks for this post, I love this site

I have a 2003 Jeep Grand Cherokee with a 4.0 straight 6 cyl engine. It has 17,000 miles on it and has been running fine. I took it to the car wash today it has been 28 degrees here in NJ. After I returned home I noticed the electric radiator fan was still running even after I shut the enging off. I went outside a while after and it was still running. I took the care around the block to see if it was just a fluke thing but the fan stayed running after I shut the engine off and did not stop. As not to run my battery down, I open the fuse and relay distribution box in the engine compartment and removed the square green 40 amp fuse or relay that stopped the fan. I put the fuse back in and the fan came back on. I will leave it out until tomorrow morning when I leave for work. I have a 35 minute ride to work and I will see what the fan is doing when I get there and shut the engine off. It was fine until I got the car washed today at our local car wash. Have you run across this before?
Thanks,
Harry

[quote:9faccd43d5="hbf99"]I have a 2003 Jeep Grand Cherokee with a 4.0 straight 6 cyl engine. It has 17,000 miles on it and has been running fine. I took it to the car wash today it has been 28 degrees here in NJ. After I returned home I noticed the electric radiator fan was still running even after I shut the enging off. I went outside a while after and it was still running. I took the care around the block to see if it was just a fluke thing but the fan stayed running after I shut the engine off and did not stop. As not to run my battery down, I open the fuse and relay distribution box in the engine compartment and removed the square green 40 amp fuse or relay that stopped the fan. I put the fuse back in and the fan came back on. I will leave it out until tomorrow morning when I leave for work. I have a 35 minute ride to work and I will see what the fan is doing when I get there and shut the engine off. It was fine until I got the car washed today at our local car wash. Have you run across this before?
Thanks,
Harry[/quote:9faccd43d5]

Hey Harry,
Sure have! there is a solid state relay behind the right headlight assembly,( a real @#%@% to change too!) There is an issue with these failing either not allowing the fan to work or turning the fan on continuously. Let us know!

Chris

Hi Chris, Thank you for the information, I purchased the fan relay today. You said the right side head light, did you mean facing the hood or inside the car. Is it passanger side head light? I see my relay came with screws and rivets depending on when my Jeep was made. My Jeep was made Oct.2002.
let me know
Thanks,
Harry

Yes Harry, passenger side!

Chris

[quote:df7f5c66f9="carundell"]Yes Harry, passenger side!

Chris[/quote:df7f5c66f9]

Thank you for your help Chris. I will let you know how the installation went and if I have any other trouble with that relay.
Harry

I have a 2002 jeep cherokee miles 100,000 when I turn off my car the fan keeps on running I was told that it was the relay but I don't know where it would be can you tell me and would that be whats wrong? Tracy

check the ground wires

_____________
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Advance Auto
9289

the driver side heat is fine but no heat at all on the passenger side

My radiator fan won't stop running when I turn the ignition off, killing the battery. Is this a belt issue? I removed the battery cables, can I drive it to a shop or will it overheat? 95 Cherokee.

SISSY LIZ,

Forget the shop.......at least for now

Hook your battery back up and take that "Puppy" to Advance Auto or Autozone...........or another popular auto store.

Sound like a relay is stuck or burned

Merry Christmas!

The Medic