DESCRIPTION This DTC indicates an internal malfunction of the driving support ECU assembly.
CAUTION / NOTICE / HINT NOTICE: When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored. PROCEDURE
(a) Replace the driving support ECU assembly. Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Lighting System(for Gasoline Model With Cornering Light): Right Headlight ECU Malfunction (B242C,B242D)
DESCRIPTION The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores a DTC if it detects an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from B242C Right Headlight ECU Malfunction The engine switch is on (IG). Headlight ECU sub-assembl ...
