If your does remove the old fluid somehow with like one of those turkey basters. You will need a t wrench(i can get you the part number if you like) Maybe. I don't my wrench with me. Its usually in a special tools cabniet at work. When you open that cap sometimes it squirts out alittle brake fluild so watch your eyes or the paint on your car. You will need to relieve the pressure from the modulator. This is what the t wrench is for. Open it up like a little bit probably like a 1/4 turn. tighten the bleeder vavle. Let the fluild settle when you hook up the t wrench cause the pressure makes it foamy and you wont get a accurate reading. its important.

Then just refill it with honda brake fluild.

You need a alb checker. This is why i would take it to the dealer. Your suppose to. Its assurance your abs will work properly. But its up to you i guess. Since your probably going to do this in your garage. Your are suppose to do this like 3-4 times. O and after you get the fluid out with the t wrench and add new fluild start the engine so that the motor runs cycles the brake fluild in the system. Repeat this like 3-4 times. you should feel kickback on the abs. when you test drive it. I haven't done many abs modules. Its been awhile. I did one on my freinds integra ls awhile back.