PRE-CRASH SAFETY 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 (multiplex network body ECU). If the driving support ECU cannot store the country specification information, DTC C1A02 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C1A02

Vehicle Information Not Obtained

While the engine switch on (IG) and the pre-crash safety system is operating, the driving support ECU cannot store the country specification information.

  • Main body ECU (Multiplex network body ECU)

  • Driving support ECU

Driving Support ECU (Pre-Crash 2)

PROCEDURE

  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (DRIVING SUPPORT ECU COUNTRY INFORMATION)

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

      Click here

      Table 1. Pre-Crash 2

      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

      EURO, OTHER, CHINA, THAI or GCC

      -

      OK

      Country specification information is correct.

      Result

      Result

      OK

      NG
    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVING SUPPORT ECU

    OK

  2. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Pre-Crash > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > Pre-Crash > Trouble Codes

      OK

      DTC C1A02 is not output.

      Result

      Result

      OK

      NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

    REPLACE DRIVING SUPPORT ECU

    Click here