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Temperature warning light Kodiak 450.

This is a discussion on Temperature warning light Kodiak 450. within the Kodiak/Big Bear/Bruin/Wolverine Discussion forums, part of the Other Yamaha Forums category; The temperature warning light is supposed to come on momentarily when you start the engine(while cranking) to show it is working. My Raptor 660 did, ...


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#1
04-24-2011, 11:13 PM
Temperature warning light Kodiak 450.

The temperature warning light is supposed to come on momentarily when you start the engine(while cranking) to show it is working. My Raptor 660 did, but my 2006 Kodiak 450 doesn't. The light works because if you disconnect the wire from the sensor it comes on steady. Any body have this problem? Does it actually in fact work?
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04-30-2011, 01:05 PM
I'll answer my own question. The manual is WRONG. There is no provision for testing the temp warning light on the Kodiak as there is on the Raptor 660. I verified this by comparing the wiring diagrams. It may work on the 660/700 grizzlies but not the 450 Kodiak/Grizzly(and probably not on the 400). This is due to the temp sensor being normally closed, unlike on the raptor, which would make it harder to do.
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#3
05-01-2011, 10:39 AM
I have never noticed my temp light coming on when starting. It did come on my last ride after my radiator cracked and I lost all my coolant. Since my last ride I have replaced the radiator.
One thing my fan doesn't come on. I checked it for operation when it was off of the machine and verified it was turning with the battery. Its cold up here in AK and it probably doesn't get that hot, anyone have anything similar to my experience? I'll check the temp of the radiator with a laser sensor and see if its getting over 180 degrees.

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#4
05-01-2011, 12:11 PM
My light don't come on at startup..Juat the LCD lights up..Been wondering if all works ok.
My fan runs strong and Cycles on off in 75 degrees every 5 mins or so while stopped. I gotta get a service manual and owners manual..
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#5
05-02-2011, 02:18 PM
My Kodiak 450 fan will not come on automatically. Works fine with direct 12 volts. Disconnected the temp sensor wire on head and light came on. Does that mean the temp sensor is working? Check all fuses under seat, all ok. tried switching the two relays and did not make any difference. Any ideas?
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#6
05-02-2011, 09:53 PM
That means the temp warning light is working. The Temp warning sensor must be removed to be tested.

There is a different sensor for the fan. It is located in the radiator(right above lower hose). The relays are for the 4wd. There is no fuse(other than main fuse) for the fan. It has a "circuit breaker" which is located under the speedo. I would check it.
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05-10-2011, 02:00 PM
How can I test my temp warning sensor if I remove it? My temp warning light comes on intermittently for no reason. My fan cycles on and off just like it should. It seems that it's just a problem with the temp sensor, how can I make sure that the sensor is actually the problem?
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#8
05-10-2011, 05:48 PM
The light functions when there is no ground, so you may have a loose connector or broken wire. To test it, you would remove it and connect an ohm meter to the terminal and the case of the sensor, then heat it, usually by placing it in boiling water. You could use a heat gun or torch, but you may damage it if you apply too much heat. The sensor shouldn't be expensive given it's simplicity, so if you remove it, I'd replace it personally.
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05-10-2011, 05:50 PM
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Originally Posted by POKO View Post
That means the temp warning light is working. The Temp warning sensor must be removed to be tested.

There is a different sensor for the fan. It is located in the radiator(right above lower hose). The relays are for the 4wd. There is no fuse(other than main fuse) for the fan. It has a "circuit breaker" which is located under the speedo. I would check it.
On my 2003, if you disconnect the radiator located sensor plug, the fan will run. Easy way to test the fan, but of course it doesn't test the sensor. Mine runs after idling for about 7 mins.

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#10
05-10-2011, 06:13 PM
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Originally Posted by oconnor View Post
On my 2003, if you disconnect the radiator located sensor plug, the fan will run. Easy way to test the fan, but of course it doesn't test the sensor. Mine runs after idling for about 7 mins.

Thats interesting because I thought the sensor was a normally open switch. Meaning that you have to jump the switch to test to see if the fan is working.
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#11
05-10-2011, 10:39 PM
oconnor how much resistance should I have when I heat it up? And if it's defective what kind of reading should I expect to get?
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#12
05-10-2011, 10:51 PM
Should be 0 ohms cold and open loop at ~210
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