Dtc B2790 Id Box Eeprom Malfunction

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Theft Deterrent Keyless Entry. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

CLEAR DTC

REGISTER RECOGNITION CODE

REGISTER ECU COMMUNICATION ID

CHECK FOR DTC

DTC B2790 ID BOX EEPROM Malfunction


DESCRIPTION

When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC.

DTC Code
DTC Detection Condition
Trouble Area
B2790
An internal malfunction occurs in the ID code box (immobiliser code ECU) (EEPROM access malfunction). (1 trip detection logic*)
  1. ID code box (immobiliser code ECU)
  2. Certification ECU (smart key ECU assembly)
  1. *: Only output while a malfunction is present.

Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected
Fail-safe Operation when Malfunction Detected
  1. Engine starting: Engine cannot be started next time
  2. Engine stopped: Engine cannot be started
-

Related Data List and Active Test
DTC Code
Data List and Active Test
B2790
-

INSPECTION PROCEDURE

NOTICE:
  1. When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start (CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
  2. Before replacing the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU), refer to Service Bulletin.
  3. After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation."
1.REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

  1. Replace the ID code box (immobiliser code ECU) with a new one.

    HINT:
    Refer to Service Bulletin.

NEXT


2.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


3.REGISTER RECOGNITION CODE

  1. Register the recognition codes in the ECUs.

    HINT:
    Refer to Service Bulletin.

NEXT


4.REGISTER ECU COMMUNICATION ID

  1. Register the ECU communication ID.

    HINT:
    Refer to Service Bulletin.

NEXT


5.CHECK FOR DTC

  1. Perform "DTC Output Confirmation Operation" procedure.

  1. Check for DTCs (Click here).

    OK:
    DTC B2790 is not output.


NG
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
OK

END (ID CODE BOX [IMMOBILISER CODE ECU] WAS DEFECTIVE)