Why will the radiator fan on my not turn off when vant is shut off.

Asked by Feb 08, 2015 at 11:52 AM about the 2006 Chrysler Town & Country Base

Question type: Maintenance & Repair

The radiator fan came on 20 minutes after I drove it, it was 10 degrees outside, I did not drive hard, and the temp gauge was normal, it has good coolant levels, I had to disconnect the battery to get it off.

2 Answers

5,535

it sounds like your solid state fan relay either has found a ground other than the PCM or its internally shorted...I have copied the operation from the factory manual ...will find the wiring schematic and post that as well 7 - Cooling/Engine/RELAY, Radiator Fan/Operation GAS ENGINES The solid state radiator fan relay is controlled by the Powertrain Control Module (PCM) by way of a Pulse Width Modulated (PWM) signal. The relay control circuit supplies a 12 volt signal to the PCM. The PCM then pulses the ground circuit to achieve fan on time. The relay provides a voltage to the fan motors which is proportional to the pulse width it receives from the PCM. The duty cycle ranges from 30% for low speed operation, then ramps-up to 100% for high speed operation. This fan control system provides infinitely variable fan speeds, allowing for improved fan noise, A/C performance, better engine cooling, and additional vehicle power. To control operation of the relay, the PCM looks at inputs from: Engine coolant temperature A/C pressure transducer Ambient temperature from the body controller Vehicle speed Transmission oil temperature The PCM uses these inputs to determine when the fan should operate and at what speed. For further information on fan operation, (Refer to 07 - Cooling/Engine/FAN, Cooling - Operation) .

7 people found this helpful.
5,535

wiring diagram....and the fan relay is on the front bumper support in front of the radiator and the rivet will have to be drilled out....and will have to be riveted back on or sheet metal screwed in ....it uses this to keep it cool through the heat sink

3 people found this helpful.

Your Answer:

Chrysler Town & Country Experts

  • #1
    Tom Demyan
    Reputation
    2,460
  • #2
    thejeepdoctor
    Reputation
    2,010
  • #3
    dandyoun
    Reputation
    1,890
View All

Related Models For Sale

Used Dodge Grand Caravan
251 Great Deals out of 29,626 listings starting at $1,900
Used Honda Odyssey
446 Great Deals out of 34,629 listings starting at $1,200
Used Chrysler Pacifica
126 Great Deals out of 27,172 listings starting at $2,000
Used Toyota Sienna
246 Great Deals out of 24,020 listings starting at $1,495
Used Dodge Caravan
412 listings
Used Kia Sedona
150 Great Deals out of 8,365 listings starting at $1,850
Used Ford Explorer
884 Great Deals out of 70,422 listings starting at $1,275
Used Nissan Quest
44 Great Deals out of 2,258 listings starting at $2,300
Used GMC Acadia
492 Great Deals out of 31,019 listings starting at $3,500
Used Chevrolet Tahoe
662 Great Deals out of 38,329 listings starting at $995
Used Honda Pilot
346 Great Deals out of 46,165 listings starting at $750

Used Cars For Sale

2016 Chrysler Town & Country For Sale
76 Great Deals out of 2,651 listings starting at $12,995
2015 Chrysler Town & Country For Sale
39 Great Deals out of 2,077 listings starting at $10,200
2014 Chrysler Town & Country For Sale
34 Great Deals out of 1,411 listings starting at $6,490
2013 Chrysler Town & Country For Sale
20 Great Deals out of 960 listings starting at $6,995
2012 Chrysler Town & Country For Sale
15 Great Deals out of 834 listings starting at $3,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.