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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Forward Recognition Camera System (Diagnostic Codes & Circuit Tests) >> Forward Recognition Camera System >> DTC C1AA3: Vehicle Speed Sensor Circuit [08/2018 - 08/2019] >> Description

DTC C1AA3: Vehicle Speed Sensor Circuit [08/2018 - 08/2019]: Description

The forward recognition camera receives vehicle speed signals from the skid control ECU assembly. If the skid control ECU 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 power switch is turned on (IG), a signal from the skid control ECU 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
  • Skid control ECU assembly
  • Forward recognition camera