DESCRIPTION When the brakes are applied by the dynamic radar cruise control system, the skid control ECU (brake booster with master cylinder assembly) operates the stop light switch assembly (stop light control relay) to illuminate the stop lights. If the hybrid vehicle control ECU receives a stop light control relay malfunction signal from the skid control ECU (brake booster with master cylinder assembly), DTC P057113 is stored.
CAUTION / NOTICE / HINT HINT: When DTC P057113 is stored by the dynamic radar cruise control system, DTC C1A4B is stored by the pre-collision system. Therefore, if DTC P057113 is stored, inspect the pre-collision system first. PROCEDURE
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Dynamic Radar Cruise Control System(for Gasoline Model): Driving Support ECU Communication Abnormal (C1A52)
DESCRIPTION The DTC C1A52 is stored when the ECM cannot recognize the driving support ECU assembly. DTC No. Detection Item DTC Detection Condition Trouble Area MIL C1A52 Driving Support ECU Communication Abnormal Approximately 17 seconds after the engine switch is turned on (IG), the ECM cannot reco ...
