DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:C1A50

DTC Code DTC Name
C1A50 Brake System

DESCRIPTION

When the driving support ECU assembly receives an electronically controlled brake system malfunction signal from the skid control ECU assembly via CAN communication, DTC C1A50 is stored.

DTC Code DTC Detection Condition Trouble Area
C1A50 When the dynamic radar cruise control system is operating, the input malfunction signal from the skid control ECU assembly continues for 0.2 seconds or more.

  • Electronically controlled brake system

  • Driving support ECU assembly

CAUTION / NOTICE / HINT

Note


  • When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.


PROCEDURE


  1. CHECK FOR DTCs (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Check for DTCs Click here.

      OK
      Electronically controlled brake system DTCs are not output.

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

  2. CHECK FOR DTCs


    1. Clear the DTCs Click here.

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Turn the power switch on (IG).

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF).

      3. Wait for 0.2 seconds or more.

    3. Check for DTCs Click here.

      OK
      DTC C1A50 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here