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Discussion Starter #1
Hey! long time no see!
I've got a 2010 honda 420 es that the front diff 4x4 light won't come on. I cant tell if engages or not.
Any clue? or what the cause might be? I've never torn into one before. thx!
 

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just a guess ? ( I dont mess with many trx420's much )..i'd say have a look at/for the speed sensors to see if the connection is tight/clean ?, or the sensor itself could be bad ?. most electronic front diff's wont work if the speed sensors are bad, least on older models anyway.
 
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