DTC    B2790    ID BOX EEPROM Malfunction

for Preparation Click here


DESCRIPTION

This DTC is stored when the ID code box detects an internal malfunction.

DTC No.
DTC Detection Condition
Trouble Area
B2790
ID code box detects internal malfunction.
  1. ID code box
  2. Certification ECU

INSPECTION PROCEDURE

NOTICE:
If the ID code box is replaced, register the ECU code and ECU communication ID.

1.REPLACE ID CODE BOX

  1. Replace the ID code box.


NEXT


2.ECU CODE REGISTRATION

  1. Register the ECU code.


NEXT


3.ECU COMMUNICATION ID REGISTRATION

  1. Register the ECU communication ID.


NEXT


4.CHECK DTC OUTPUT

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs (Click here).

    OK:
    B2790 output does not recur.



NG
REPLACE CERTIFICATION ECU
OK

END (ID CODE BOX IS DEFECTIVE)