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Home >> Toyota >> 2018 >> Corolla SE, Automatic CVT Trans >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Lane Departure Alert System (W/ Steering Control) - Diagnostic Codes & Circuit Tests (Model Code: ZRE172) >> LANE DEPARTURE ALERT SYSTEM (W/ Steering Control) >> DTC C1AA3: Vehicle Speed Sensor Circuit [08/2016 - ] >> Description
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DTC C1AA3: Vehicle Speed Sensor Circuit [08/2016 - ]: 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 ignition switch is turned to ON, 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.
  • Vehicle stability control system
  • Skid control ECU (Brake actuator assembly)
  • Forward recognition camera
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