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Discussion Starter #1
new member here. a friend gave me a 2003 tb 330. he hooked up battery cables backward and smoked the ecm on it. part number on it is 4010944. can anyone tell me exactly what that part controls. any help would be great. i bought a new one and put it on, but the battery isn't charging. thanks again
 

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Welcome to the board!:med:
 

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Discussion Starter #4
ridinagain, thanks for the info. would you know if that part controls the battery charging? thanks again.
 

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Welcome to the forum!
 

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No it doesn't the stator generates the power to run everything and charge the battery. Sends it through the voltage regulator/rectifier which controls the voltage to around 14V DC and sends it through the system. If it's not charging when running you can ohm test the stator to see it it is in spec and if so the voltage regulator is probably at fault.
 

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Discussion Starter #7
i appreciate your time and info. i'm new to these atv's, so you guys may be seeing more questions from me. thanks
 

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Your buddy probably cooked the regulator when the batteries cables were backwards. Definitely start there.
 
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