Fazer coolant fan problem

[BOSSMANJAY]

Hi Guys, hope someone can help? My coolant fan has started running as soon as the ignition is switched on and does not go out when put into gear. I've checked all the connections I can find and no corrosion evident. Anyone got suggestions what it might be?

[unfazed]

Could be a couple of things,
Check the wiring for damage, but a faulty Thermoswitch is the most likely and is what I would check after doing a quick check of the wiring. Do you have a Multimeter to check the resistance of it? If it is less than 3 K ohms when cold then it is most likely the problem. Easy enough to get as it is the same as the foxeye 600 and  early R1

Faulty Fan Relay is another possibility

[schlumpf]

Small correction, it is a ThermoSensor. Resistance at 20°C is near 38000 ohm, and about 2700 ohm at 90°C. Electronics is inside the cluster.
A faulty relay is likely. It is placed left hand side near the battery.

[BOSSMANJAY]

Thanks, I'll try both suggestions today.

[unfazed]

Thermosensor may be the correct term in electronic speak but most people would know it as the Thermostat switch and it is on the Thermostat housing which means lifting the tank to check it.
Apologises it should have read less than 3 K Ohms when cold. I have corrected it

[BOSSMANJAY]

Ok, I have fitted new relay, but no difference. I want to try the Thermo next, can anyone give a clue where I can get one? They are a fortune at Yamaha. Also noticed from the wiring diagram there is a combination meter in the circuit. Anyone know what this does?

[schlumpf]

First check the sensor with a multimeter, they rarely fail.
The combination meter might be your cockpit/cluster. The electronics inside activates the fan relay.

[BOSSMANJAY]

Aah The clocks! Will try and measure the Thermo sensor, but have managed to get one on ebay for a tenner, just in case.

[BOSSMANJAY]

Right, I'm having a problem here. Changed the relay & thermo switch. No joy. However my friend reckons that the electronics in the clocks probably control the timer which switches the fan after start up. I'll start looking at the wiring to the clocks but before I start buying clocks has anyone got any info on this?
Frustrated!!!

[BOSSMANJAY]

Success!  Ok, sorted the problem with the help of my mate. Wiring fault in the loom caused the fan to run all the time on switch on. There is a Green Black wire which runs from the Clocks to the relay. The green black was down to earth and causing the relay to switch on immediately the ignition came on. Rather than strip acres of loom we ran a new cable from the clocks multi-plug back to the relay, soldering each end and hey presto, Back to normal.
Hope this helps anyone with similar problems.

Now I just need to order a new back tyre for our touring holidays in Germany.