ROAD SIGN ASSIST SYSTEM, Diagnostic DTC:C1AA3

DTC Code DTC Name
C1AA3 Vehicle Speed Sensor Circuit

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

CAUTION / NOTICE / HINT

Note

The road sign assist system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.

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PROCEDURE


  1. CHECK FOR DTCs (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

    Tech Tips

    If DTC C1AA3 is stored, the electronically controlled brake system may be malfunctioning. Check for DTCs related to the electronically controlled brake system first.


    1. Check for DTCs.

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      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here