DYNAMIC RADAR CRUISE CONTROL 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. When the country specification information in the ECU and meter do not match, DTC C1A02 is output.

DTC Code DTC Detection Condition Trouble Area
C1A02 While initial check is running, engine switch is on (IG) and system is operating, driving support ECU does not receive vehicle destination information and ECM transmission information

  • Driving support ECU

  • No. 1 meter ECU sub-assembly

  • ECM

INSPECTION PROCEDURE

PROCEDURE


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


    1. Connect the use the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Read the Data List and check the country specification information of the driving support ECU and vehicle.

      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 or NOFIX Actual country code -
      OK
      Country specification information for vehicle and driving support ECU matches.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

  2. CHECK FOR DTC


    1. Clear the DTC Click here.

    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