System Description: Outline

• BCM incorporates a power saving control function that reduces the power consumption according to the vehicle status.
• 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, combination meter (unified meter and A/C amp.) and driver seat control unit] 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