DYNAMIC RADAR CRUISE CONTROL SYSTEM(for Stereo Camera Type), Diagnostic DTC:U031851, U031857

DTC Code DTC Name
U031851 Software Incompatibility with Brake System Control Module Not Programmed
U031857 Software Incompatibility with Brake System Control Module Invalid/Incompatible Software Component

DESCRIPTION

Driving support ECU assembly receives the vehicle information from the skid control ECU assembly via CAN communication line.

If the driving support ECU assembly can not store the vehicle information, DTC U031851 is stored.

If the vehicle information stored in the driving support ECU assembly is different from that stored in the skid control ECU assembly, DTC U031857 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
U031851 Software Incompatibility with Brake System Control Module Not Programmed

    Detection condition:

  • Dynamic radar control system is ON

  • 3 seconds or more elapsed after power switch is on (IG)


    Malfunction status:

  • The vehicle information sent from skid control ECU assembly remains undefined.


    Malfunction duration:

  • 3 seconds or more

 Electronically controlled brake system
U031857 Software Incompatibility with Brake System Control Module Invalid/Incompatible Software Component

    Detection condition:

  • Dynamic radar control system is ON

  • 3 seconds or more elapsed after power switch is on (IG)


    Malfunction status:

  • The stored value for the vehicle information in the driving support ECU assembly unmatches the received value from skid control ECU assembly.


    Malfunction duration:

  • 2 seconds or more

 Electronically controlled brake system

PROCEDURE


  1. CHECK FOR ELECTRONICALLY CONTROLLED BRAKE SYSTEM


    1. Check for electronically controlled brake system.

      Click here

      Result
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    END