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 main body ECU. 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 ignition switch is ON and the lane-keeping assist system is operating, the driving support ECU cannot store the country specification information.

  • Driving support ECU

  • Main body ECU (Instrument panel junction block assembly)

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


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

      Pre-Crash 2
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Country# (DSS) Driving support ECU country signal / JAN, NA, EURO, GEN Actual country code -
      OK
      Country specification information for driving support ECU and vehicle match.

    NG

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) AND DRIVING SUPPORT ECU

    OK

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1A02 is not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE DRIVING SUPPORT ECU Click here

    C

    REPLACE DRIVING SUPPORT ECU Click here

    A

    USE SIMULATION METHOD TO CHECK Click here