LANE-KEEPING ASSIST SYSTEM, Diagnostic DTC:C1A02

DTC Code DTC Name
C1A02 Vehicle Information Not Obtained

DESCRIPTION

When the driving support ECU is replaced with a new one, it acquires the country specification information from the No. 1 meter ECU sub-assembly. If the driving support ECU cannot store the country specification information, DTC C1A02 is stored.

DTC Code DTC Detection Condition Trouble Area
C1A02 While the power switch is ON (IG) and the lane-keeping assist system is operating, the driving support ECU cannot store the country specification information.

  • Driving support ECU

  • No. 1 meter ECU sub-assembly

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (DRIVING SUPPORT ECU)


    1. Use the Data List to check if the country specification information is correct Click here.

      Radar Cruise
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Country# (DSS) Driving support ECU country signal/JPN, NA, EURO AUS, SAFC, OTHER, TWN, CHINA, THAI, GCC, NOFIX EURO AUS, SAFC, OTHER, TWN, CHINA, THAI or GCC -
      OK
      Country specification information for driving support ECU and vehicle match.

      Tech Tips

      The country specification information of the driving support ECU is decided by the combination meter.


    NG

    REPLACE DRIVING SUPPORT ECU AND NO. 1 METER ECU SUB-ASSEMBLY

    OK

  2. CHECK FOR DTC


    1. Clear the DTC Click here.

      Tech Tips

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


      1. Drive the vehicle at a 50 km/h (31 mph) or more, and operate lane-keeping assist system.

    2. Check for DTC Click here.

      OK
      DTC C1A02 is not output.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here