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Volvo 850 Radiator Fan Not Working

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Register. d. It is important to note that if your cooling system were filled with pure water and was unpressurized, the water would boil over before the ECM would think it was hot It will also turn on the fan when the ECT sensor indicates ultra-low or ultra-high temperatures (sets code) because it cannot trust the ECT sensor and this fail-safe mode helps ensure this contact form

The ECM can also sense whether the yellow and yellow/white wires have an open circuit (sets codes). 16. Ensure the ground (black wire) is connected securely on the top of the fan shroud. 1 Share this post Link to post Share on other sites bunce1260    3 Level 1 So, best thing to do is get a filter, motor and resistor/power stage. Cleaned up the contacts and zip tied it to the relay and problem solved. 0 Share this post Link to post Share on other sites mercuric    56 Level 1 Member https://www.ifixit.com/Answers/View/90787/Radiator+Fan+not+working.

Volvo 850 Radiator Fan Not Working

Replaced the cooling fan relay and now it switches on when the AC is working. $38.89 Share this:TwitterFacebookLike this:Like Loading... Does your gauge read? The ECM is waiting for the ECT sensor to indicate resistance levels below about 160 ohms.20. IT IS VITAL THAT YOUR COOLANT SYSTEM BE A 50/50 MIX AND THAT IT RETAINS PRESSURE IN ORDER FOR THE COOLANT TO REACH A TEMPERATURE THAT WILL CAUSE THE ECM TO

I use a multimeter at the relay to check to see if there is actually power to the relay. Reconnect the ground lead if it looks good and continue. These are used on a high-current circuits that can have variable loads which sometimes exceed the long-term rating of the circuit, for example when the fan starts and the motor demands Volvo 850 Blower Motor Resistor We moved here several months ago from San Jose, CA, where ourselves and the car lived our entire lives.

Volvo 400-series after that. The resistor will now be pretending to be an ECT sensor thermistor that indicates a hot engine. d. http://volvoforums.com/forum/volvo-850-16/blower-fan-not-working-acc-not-working-22376/ Source(s): from Sweden.

Also, I've read about this fusible link, what is it exactly and where is it located? 0 Share this post Link to post Share on other sites mercuric    56 Level Volvo Xc90 Cooling Fan Relay They are in the front R/H corner right behind the headlight. I turn the A/C on, but the Radiator fan does not turn on. (A/C system comes on and off quite quickly and needs a recharge, if this matters to my issue, The only way to trigger them is to do it electronically.

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  • Put the other ends of the jumpers on each side of the 150 Ohm resistor.g.
  • The ohmmeter should read 0 ohms, or approximately the same value shown when the meter's leads are shorted together.
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  • If the wiring is proper, verify resistances directly at the fan to determine if one of the motor coils is defunct and open circuited, although it seems you already confirmed the
  • Mitchell, where is the spring you worked on?
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  • It sends the temp data to the instrument cluster, and sends a signal to the cooling fan relay to turn the fan on speed 1 or speed 2.
  • The ECM then sends an output signal to the temp.
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Volvo 850 Cooling Fan Fuse

Step 2: Disconnect ground lead single pin terminal on fan shround, using an ohm meter, check for resistance between the body side of the lead (not the fan side) and ground. look at this site The fan relay is designed to make sure that only ONE of the fan speeds can be energized.3. Volvo 850 Radiator Fan Not Working Privacy Policy Contact Us × Existing user? Volvo 850 Blower Motor Not Working If the fan fails to turn at either low speed, high speed, or both, check for resistance between 1C and ground, and then 2C and ground.

Go get one from the junkyard fo cheap to fix the issue.... 0 Share this post Link to post Share on other sites bunce1260    3 Level 1 Member Members 3 http://wiiemulator.net/volvo-850/volvo-850-seat-heater-not-working.html I tried disconnecting the CTS but still nothing. Patlesben View Member Profile May 25 2015, 11:50 PM Post #3 Newbie Group: Members Posts: 1 Joined: 25-May 15 Member No.: 146,730 Status: Location: Usa Drives: 2000 v70 My v70 engine Ask a question usually answered in minutes! Volvo 850 Radiator Fan Relay

Robert DIY 47,082 views 46:37 Faulty Fan Control Module - Mitsubishi Lancer - Duration: 25:23. It is important to disconnect and inspect the contacts of this ECT sensor connector. Its too late tonight for me do check fault codes again, I will prpbably do that tomorrow. navigate here I expect to find some of them a bit worn (232.000km, some limited noise and vibration, I am still not quite sure where is that coming from but I expect main

Normal boiling point of water (212/100) will register about 180 ohms. Volvo S60 Cooling Fan Not Working This seems like the exact problem I am having. f.

It has relatively generous connecting wires to a simple connector that you can pull forward to gain access to that connector.18.

Entries (RSS) and Comments (RSS). %d bloggers like this: Login|Contact Us Volvo Volvo Troubleshooting Questions? Close Yeah, keep it Undo Close This video is unavailable. All help is appreciated. Volvo Xc90 Cooling Fan Not Working Use a jumper wire to connect ONE of the exposed pins in the relay to ground (e.g.

The relays go bad as do the sensors. Loading... The speeds are energized by signals from the ECM to the fan relay. http://wiiemulator.net/volvo-850/96-volvo-850-odometer-not-working.html The most fundamental but rare situation would be that both the wires (yellow, yellow/white) are broken/corroded.

I would have to find a wiring diagram to give you then you would have to trace the circuits to try testing the resistor. Watch QueueQueueWatch QueueQueue Remove allDisconnect The next video is startingstop Loading... If it sees a high enough temp, then it sends a signal to the cooling fan relay I mentioned earlier.