1996 Acura TL ABS Light comes ON & OFF occasionally

Brakes problem
1996 Acura TL Front Wheel Drive Automatic 147000 miles

To clarify -- my car engine size is a 5 cyl. About 2 yrs. Ago, my ABS light came on and off and then it remained constant. I retrieved the trouble code from the OBD and found that the Acumulator Canister was leaking - I kept hearing the ABS pump on & off intermittently. After searching the internet for a replacement -- it was so expensive to replace a hi-pressure canister (acumulator) $229+. So I found an auto salvage place and got the whole ABS system unit for $135 or so. I replaced the whole unit and the ABS light went away and lasted for 2 yrs. Now I have to check the OBD to get the trouble code; to see what's the problem now with the ABS system. I seemed to forgot exactly where is the OBD connector is located and which terminals I can do a jump with a piece of wire or paper clip to get a repition reading of the blinking "check engine light". I know there is an OBD connector under the "coin tray" at the gears shift console.

If I find that the acumulator (canister) is leaking and/or malfunctioning; is this somekind of "recall" for this occurences. Thus, my car has 147k+ miles; is it worth to get a new acumulator (canister) for replacement? Is replacing this canister can be done at home or needs special tools? I see there's a 12mm bolt/srew on top of the canister. Any provided procedures in replacing the canister is greatly appreciated.

Thank you for your help.