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Discussion Starter · #1 ·
I have a problem with my 2003 400ex. when i turn on the key, i have no neutral light, even though it rolls freely. I have power from the battery up to the key, but can't find anything past that. Is there a way to test the key switch to see if it is good or bad?? How can I test the neutral indicator, or bypass it just to test functionality? It has been starting fine up until yesterday, when I went to start it, pushed the button, and it turned over for about 1 second, then cut out, and have had no power since. Fuse is still good.

thanks
 

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Welcome to the forums. Make sure the neutral switch wire is plugged to the neutral switch. Sometimes, they will come loose. The neutral switch is located behind the shifter, below the front sprocket. If it is plugged up, unplug it and ground the end of the wire to the block and see if the neutral light comes on. If it does, the neutral switch is probably bad.

Here is instructions on how to test the neutral sensor.

 

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Discussion Starter · #3 · (Edited)
checked the wire... it was plugged in... no light when grounded to the frame.... has continuity from the key switch pigtail to the sensor connector. I also have no headlights working...

Oil came out of the sensor port when i took it out.... is that normal??
 

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Oil came out of the sensor port when i took it out.... is that normal??
Yes, that's normal.

Here are instructions for checking the ignition switch and the handlebar switch.


 

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Discussion Starter · #5 · (Edited)
I think i have something grounded out somewhere.... with the key in the off position, battery has 11.74 volts. With the key in the on position, i have .01 volts.

I have continuity from the red wire to the black wire, but nothing from the red wire to the black/white wire.
Everything in the handlebar switch works also.
I pulled the neutral sensor, and it has continuity from outside to inside when it's depressed and extended.... should it be that way??

Do i need a new key and switch??
 
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