I would just pull the alternator out and take to a parts store to have it tested... Here they all do it for free and it's easy to do. That's VERY low and below the ECU's minimum from what I've been told.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|