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Where is the radiator fan relay control circuit located

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Inside the fused block under the hood. It will be marked by location on the lid

Posted on Nov 13, 2010

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1 Answer

Where is the position of radiator fan relay on jeep liberty 2006


no idea to be honest earlier jeeps had then at the front of the wing down below as i remember ?? newer one would i imagine be in the electrical box under the bonnet near the battery

Dec 02, 2016 | Jeep Cars & Trucks

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1999 Dodge Neon Issues (HELP)


Here's a link to the P0340 code,and P1491.Powertrain Diagnostics Manual P-1491 Radiator Fan control relay circuit
Set condition: An open or shorted condition is detected in the radiator fan relay control circuit.

Possibilities:
Fan relay ground circuit open
Fused B+ circuit open
Rad fan control relay defective
RF relay output circuit volt cycles over to batt voltage
RF relay control circuit open
RF relay ctrl rly ckt wir harness observable or intermittant defect
RF relay ctrl ckt short to ground
Defective PCM

Get out your Multimeter.

Mar 22, 2013 | 1999 Dodge Neon

1 Answer

1999 Jeep Cherokee Sport wont shift into overdrive P1491


P1491 - Radiator Fan Control Relay Circuit Open Or Shorted

When monitored: with the ignition key on, battery voltage greater than 10.0 volts and
the pcm requests the radiator fan to be turned on.
Set condition: an open or shorted circuit is detected in the radiator fan relay control
circuit.

Possible causes
radiator fan ctrl rly circuit wire harn intermittent defect
radiator fan ctrl rly circuit wire harn observable defect
radiator fan relay ground circuit open
rad fan relay control circuit open
radiator fan relay control circuit short to ground
rad fan control relay defective
pcm defective

Check ot and keep us updared.

Oct 15, 2011 | 1999 Jeep Cherokee

1 Answer

Have two codes 1490 and 1489 what are they and how do i fix them


It's most likely low speed fan control relay circuit trouble.
There are separate relays and control circuits for high and low speed for the fans. This way if one messes up the other one should still work. Relays are in relay/fuse block under the hood. There is a diagram under the relay box cover that shows the function of each relay. The relays just plug in.

1489 = High Speed Fan CTRL Relay Circuit - An open or shorted condition detected in the control
circuit of the high speed radiator fan control relay.

1490 = Low Speed Fan CTRL Relay Circuit - An open or shorted condition detected in control circuit of
the low speed radiator fan control relay.

Either the relays are gone or the connector isn't plugged in, probably the connector if both the low and high circuit is out.

May 06, 2011 | 1998 Dodge Intrepid

4 Answers

What does the diagnostic test code P1491 means?


Hello jhonney21,

The P1491 is Radiator fan control relay circuit code. It is set if an open or short circuit is detected in the radiator fan relay control circuit.

Regards,
netvan

Feb 25, 2011 | 2001 Chrysler Voyager

2 Answers

I was in a minor fender bender ( bumped the car in front of me and did little cosmotic damage.) After that my check engine light came on. The code is P1491 Manufacturer Control Axillary Emissions...


The DTC (Data Trouble Code) P1491 for Chrysler-Jeep is for the Radiator Fan Control Relay Circuit, and the radiator fan control relay is located between the radiator and the AC condenser, and there is the possibility that a collision could have damaged the radiator control relay or the wiring. Here is an image of a chrysler radiator control relay to help assist you.




zaraki_31.jpg

Nov 28, 2010 | 2003 Chrysler Town & Country

2 Answers

P1491 diagnostics code for 2003 Jeep Grand Cherokee



Trouble Code: P1491 You PCM does not sense current to radiator fan when it turns it on. Is the fan coming on or not? Usually not when you have this code. Problem can be with the fuse, relay, wiring or fan itself. First check the fuse. If good, next try swapping the relay with another one in the engine compartment relay box, such as the horn relay.
Let the car warm up and see if the fan will come on. If yes, get a new relay. If not, either use a test light to see if there is voltage at the fan connector when the engine is on and hot, or else test the fan motor by hotwiring it to the battery. If none of this works, please get back to me for how to troubleshoot the wiring.


Radiator Fan Control Relay Circuit Malfunction
Possible Causes:


Radiator fan control relay circuit is open or shorted to ground Radiator fan control relay circuit is open (test power to IGN) Radiator fan control relay is damaged or has failed PCM has failed

Nov 10, 2010 | 2003 Jeep Grand Cherokee

1 Answer

The fan to radiator stop working what could be the problem!


The electric fans are controlled by a thermostat usually located on or near the radiator. If it has failed, the fan will not start. Also, the fan is fed power through a fan control relay usually located in the fuse box. If this relay is bad the fan will not receive power. One more thing to check is the fuse or circuit breaker. Again these are located in the fuse box. If all these check out, you may have a bad fan motor although it's unlikely.

I hope this helps :)

Sep 30, 2010 | 2001 Chrysler Town & Country

1 Answer

Location for radiator fan control relay circuit for 1999 Grand Cherokke Laredo.


This relay is a common problem for Chrysler vehicles. Located in the passenger side bumper area (Jeeps). Test the fan first.

Hope helped (remember rated ths help) Good luck.

Nov 04, 2009 | 1999 Jeep Grand Cherokee

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