If you have been charged with a charge of impaired driving or failing the breathzlyer your first step should be to consult with a lawyer.  The defence of breathalyzer cases can be complex and technical because of the rules outlined in the Criminal Code dealing with the admissibility of the certificate with the breath readings.  Police officers frequently make mistakes in following these rules which may provide an accused with a defence which an experienced criminal defence lawyer can make in court.  There is no such thing as an automatic conviction simply because you have failed the breathalyzer.