I have a blinking red light on the front part of the computer box. I have never notice this before. I have owned the sled for 4 years. Never noticed this before. Does anyone know what it means? It still blinks after the key is off too. Now the sled does not want to start. It did run last night though. :cussing:

I have a blinking red light on the front part of the computer box. I have never notice this before. I have owned the sled for 4 years. Never noticed this before. Does anyone know what it means? It still blinks after the key is off too. Now the sled does not want to start. It did run last night though. :cussing:

The blinking light is to tell you there is a fault in the system and a trouble code or several codes are present. If you count the blinks it will tell you what the code (or codes) is. You count the long pulses first and then the short ones . So if for instance you have one long pulse followed by three short ones then the code would be 13. Two long pulses and one short would be 21, and so forth .

If there are more than one codes then it will blink them in series and then return to the first one.

I had it running yesterday with no flashing light. I will look again tonight after I put the clutch back on. Does any have the codes once I get it read? Does it just keep repeating or only when the machine is turned off?

i have the codes if you need them.they are available in the haynes repair manual.its usually an air box code.

Great I will see if I get them tonight. Thanks

I have a code of 13 what does that mean?

I have a code of 13 what does that mean?


13 is the intake air temp sensor in the air box. make sure it is plugged in and the wires are not broken

Is it on the side or bottom?

Was plugged in but it was wet from last weeks ride when I forgot to put anti freeze cap on. So I dried it off and put it back. Do I need to do something to reset the computer?

Any help on how to reset this computer once I clean the sensor?

That sensor is just a thermal probe , it should function correctly wet or dry , clean or dirty. Cleaning it is not reccomended as you could damage it. If you feel you must clean it do so gently and use no harsh chemicals or degreasers .

Once the electrical fault has been corrected the computer will stop flashing the code on it's own and the fault will be stored in the memory. You will not have to worry about clearing the code from the memory as it will not effect anything

When I start the machine cold it starts right up with no problem. But if I turn it off a few minutes later it has trouble starting and then I notice the light again. I just dried it off last night I though I would use some electrical contact cleaner that does not leave any residue. Do you think that might help?

OK I replaced the airbox sensor and I am still getting the blinking light of 13. I replaced my voltage regulator that was only putting out max 11 watts. So the good news is now the sled does restart again when I shut it off right after starting but why would the light still blink?

So you are still getting code 13?

You put a brand new sensor in?

Unscrew the computer from the air box and gently turn it upside down. pull the rubber boot back on the connector and find the blue wire 6th from the left in what is now the top row of wires in the connector. Turn the key and the kill sw to the run position but do not start the engine. Using a voltmeter with it's black lead grounded at the batt neg. terminal gently back probe the blue wire and let me know what voltage you get.
Then turn the key or kill off , disconnect the ECU connector and switch your meter to ohms . With the black probe still on batt neg tell me what ohms you get on the same blue wire.

I put in a used switch from a running sled. Couple of questions on the meter reading. I have not used my meter enough to know a couple things. Do I check voltage on DCV 20? Second thing is how do I set my meter to OhmI have a 1.5 (4.omA) 9v (25mA) setting. The unit I am using is a Cen-Tech Digital Multimeter I picked up at a Harbor freight.

Well if I did it right I have 4.0 volts and 2.0 ohms. Does this make sense?

I brought home a professional tester from work. I am getting 4.002 volts with the ignition on and no reading on ohms. Does this help?

I brought home a professional tester from work. I am getting 4.002 volts with the ignition on and no reading on ohms. Does this help?


the sensor shoule read 2.5k ohms across it at room temp. It should not be open at any temperature. If you are getting no reading on the ohms scale the sensor is no good

I took my old sensor and I got a reading of 2.5 in the house it was 2.8 when it was cold. But this is testing the old unit out of the machine. I did not get any reading while in the machine.

I took my old sensor and I got a reading of 2.5 in the house it was 2.8 when it was cold. But this is testing the old unit out of the machine. I did not get any reading while in the machine.


Perhaps you have a bad connection. Try jently tugging the wires and see if one is just hanging on. The readings you got from the old sensor should be good. But the new one seems to be no good

I will pull the new sensor off tomorrow and get a reading out side and them in the house. Is the 4.0 volts correct?

I will pull the new sensor off tomorrow and get a reading out side and them in the house. Is the 4.0 volts correct?


did a voltage test on mine this afternoon at about 40 deg F and got 2.97 volts

That reading of 4.0 volts was at a temp of about 41. That was with the key on and testing the blue wire and ground as you suggested. I am wondering if I am getting a true connection in that connector?

you have gotten a reading of 2.0-2.5 ohms across the sensor. Now plug the sensor in and disconnect the ECU plug. You should now be getting a reading very near what you got across the sensor if you test at the blue wire and the black right beside it with an ohmmeter. If not then you have to find the wire that is broken or shorted. That blue and black wire go directly to the sensor . The black also connects to the TPS as a ground.

Great I will try that next thanks for all you help.

Well I finally found out I have a broken wire right by the connector. That has been the issue all along. Thanks for all your help.