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BCS SYSTEM BCS-13 < SYSTEM DESCRIPTION > [WITH INTELLIGENT KEY SYSTEM] C D E F G H I J K L B A O P N • BCM switches the status (control mode) by itself with the power saving control function. It performs the sleep request to each unit (IPDM E/R and combination meter) that operates with the ignition switch OFF. Normal mode (wake-up) - CAN communication is normally performed with other units - Each control with BCM is operating properly CAN communication sleep mode (CAN sleep) - CAN transmission is stopped - Control with BCM only is operating Low power consumption mode (BCM sleep) - Low power consumption control is active - CAN transmission is stopped LOW POWER CONSUMPTION CONTROL WITH BCM BCM reduces the power consumption with the following operation in the low power consumption mode. • The reading interval of each switch changes from 10 ms interval to 60 ms interval. Sleep mode activation • BCM receives the sleep-ready signal (ready) from IPDM E/R and combination meter via CAN communica- tion. • BCM transmits the sleep wake up signal (sleep) to each unit when all of the CAN sleep conditions are ful- filled. • Each unit stops the transmission of CAN communication with the sleep wakeup signal. BCM is in CAN com- munication sleep mode. • BCM is in the low power consumption mode and performs the low power consumption control when all of the BCM sleep conditions are fulfilled with CAN sleep condition. Sleep condition Wake-up operation • BCM changes from the low power consumption mode to the CAN communication sleep mode when the any of the BCM wake-up conditions are fulfilled. Only the control with BCM is activated. • BCM transmits the sleep wake up signal (wake up) to each unit when any of the CAN wake-up conditions are fulfilled. It changes from the low power consumption mode or the CAN communication sleep mode to the normal mode. • Each unit starts the transmission of CAN communication with the sleep wake up signal. In addition, the com- bination meter transmits the wake up signal to BCM via CAN communication to report the CAN communica- tion start. CAN sleep condition BCM sleep condition • Receiving the sleep-ready signal (ready) from all units • Interior room lamp battery saver: Time out munication |