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Home >> Toyota >> 2021 >> Avalon Touring >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Lane Departure Alert System - Diagnostic Codes & Circuit Tests (Except Hybrid) >> LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) (for Gasoline Model) >> DTC C1AA3: Vehicle Speed Sensor Circuit [04/2018 - 08/2021] >> Description

DTC C1AA3: Vehicle Speed Sensor Circuit [04/2018 - 08/2021]: Description

The forward recognition camera receives vehicle speed signals from the skid control ECU (brake actuator assembly). If the skid control ECU (brake actuator assembly) receives a vehicle speed sensor malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA3 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AA3 Vehicle Speed Sensor Circuit 2 seconds after the engine switch is turned on (IG), a signal from the skid control ECU (brake actuator assembly) indicating a malfunction in a vehicle speed sensor is detected by the forward recognition camera for 5 seconds or more. Electronically controlled brake system