The PCM uses an input from the electrical system and internal programming to decide what system voltage message is requireThe PCM then sends the proper message to the instrument cluster on the CCD data bus.

• PCM使用从来自电子系统的输入和内部程式设定确定需要何种电压消息。然后PCM在ccd资料母线上将相应的消息发送给仪表组。