DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and power management control ECU stops for 10 seconds or more.
HINT: The power management control ECU is built into the certification ECU (smart key ECU assembly). CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Clear the DTCs. Body Electrical > Smart Key > Clear DTCs
(a) Check for DTCs. Body Electrical > Smart Key > Trouble CodesOK: DTC B278C is not output.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Intuitive Parking Assist System(for Gasoline Model): System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Main Body ECU (Multiplex Network Body ECU) Clearance Warning ECU Assembly Destination information signal CAN Communication Line ECM Clearance Warning ECU Assembly Shift position signal CAN Communication Line Combination Meter Assembly Cl ...