NL 50 - 3-way TPWK, turn play

[BlueBear]

BB is a 90/20 in many hands while no reads on CO. BB has stacked off $50 in many hands playing loose aggressive. Should I check as a precautionary measure against BB or make a simple turn bet for value against BB who is likely to call with any pair?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($44.50)
BB ($99)
Hero ($48.25)
MP ($37.80)
CO ($24.65)
Button ($75.15)

Preflop: Hero is UTG with T[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, CO calls $2, <font color="#666666">2 folds</font>, BB calls $1.50.

Flop: ($6.25) A[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets $4.5</font>, CO calls $4.50, BB calls $4.50.

Turn: ($19.75) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero ...</font>