Indonesia, as one of the countries adopting a civil law system in its legal system, which has the characteristics of written and administrative. As a result, the overall pattern of the investigator's oral communication is assumed to be just right. The Criminal Procedure Code, which adheres to the principle of examining accusatoir, actually creates an instrumental model of communication actions. Meanwhile, Article 117 paragraph (1) of the Criminal Procedure Code requires Investigators to give freedom to Witnesses / Suspects in answering questions in the interests of
the Minutes of Examination. The Criminal Procedure Code grants such freedom by giving limitations to Investigators not to carry out instrumental or improvisational actions, except based only on the words spoken as regulated in Article 117 paragraph (2) of the Criminal Procedure Code. We propose a formulation of the main problem, which is “how the Investigator checks through communication instrumentally to maintain a single meaning ?”. Our purpose of this study is to reveal the status quo in maintaining a single meaning by the Investigator in the examination process through the quasicommunication model. This research uses a mixed-method that not only relies on legal research but also uses several model approaches, in addition to conceptual and critical approaches, from several other social sciences, especially from several branches of Linguistic such as Semiotics, Communication, and Hermeneutic interpretation models.