DTC P1694: NO BUS MESSAGES RECEIVED FROM COMPANION MODULE 1. Turn ignition on with engine off. Using scan tool, select BODY and select type of instrument cluster that vehicle is equipped with. Once type of instrument cluster is selected, the bus operational test will be performed automatically. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool does not display BUS OPERATIONAL, refer to symptoms displayed on scan tool to identify the b