More detail and clarity is needed but so long as the capias bond is cash only (as opposed to cash or surety) often the bond can be used to offset the amount owing.
Before you turn yourself in, speak to an attorney to fully understand your rights and what is likely to happen when you do turn yourself in.
Note: This response DOES NOT constitute legal advice and therefore no specific action should be taken in reliance thereon. No attorney-client relationship is created through this response. You should speak to an licensed attorney in your state who is competent to answer your question before taking any action with regard to this question.