Dtc B2799 Engine Immobiliser System Malfunction

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

REREGISTER ECU CODE

CLEAR DTC

CHECK FOR DTC

CHECK CONNECTION OF CONNECTOR

CHECK HARNESS AND CONNECTOR (ID CODE BOX (IMMOBILISER CODE ECU) - ECM)

REPLACE ECM

REGISTER ECU CODE

CLEAR DTC

CHECK FOR DTC

DTC B2799 Engine Immobiliser System Malfunction


DESCRIPTION

This DTC is output when one of the following occurs: 1) the ECM detected errors in its own communications with the ID code box (immobiliser code ECU); 2) the ECM detects errors in the communication lines; or 3) the ECU communication ID between the ID code box (immobiliser code ECU) and ECM is different and an engine start is attempted.
Before troubleshooting for this DTC, make sure no certification ECU DTCs are stored. If stored, troubleshoot the certification ECU DTCs first.

DTC Code
DTC Detection Condition
Trouble Area
B2799
One of following conditions is met:
  1. Error in the communication between the ECM and the ID code box (immobiliser code ECU).
  2. Error in the communication lines.
  3. The communication ID is different during communication with the ID code box (immobiliser code ECU).
  1. Harness or connector
  2. ECM
  3. ID code box (immobiliser code ECU)

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2799 Engine Immobiliser System Malfunction


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2799 Engine Immobiliser System Malfunction


Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2799 Engine Immobiliser System Malfunction


INSPECTION PROCEDURE

1.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


2.CHECK FOR DTC

  1. Check for DTCs (Click here).

    OK:
    DTC B2799 is not output.


NG
Go to step 3
OK

USE SIMULATION METHOD TO CHECK (Click here)

3.REREGISTER ECU CODE

  1. Reregister the recognition codes in the ECUs.


NEXT


4.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


5.CHECK FOR DTC

  1. Check for DTCs (Click here).

    OK:
    DTC B2799 is not output.


NG
Go to step 6
OK

END (RECOGNITION CODE IN ECU IS DEFECTIVE)

6.CHECK CONNECTION OF CONNECTOR

  1. Turn the engine switch off.

  1. Check that the connectors are properly connected to the ECM and the ID code box.

    OK:
    Connectors are properly connected.


NG
CONNECT CONNECTORS PROPERLY
OK


7.CHECK HARNESS AND CONNECTOR (ID CODE BOX (IMMOBILISER CODE ECU) - ECM)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2799 Engine Immobiliser System Malfunction

  1. Disconnect the E28 ID code box connector.



    Land Cruiser. Urj200, 202 Grj200 Vdj200.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2799 Engine Immobiliser System Malfunction

  1. Disconnect the A38*1 or A52*2 ECU connector.

    HINT:
    1. *1: for LHD
    2. *2: for RHD

  1. Measure the resistance according to the value(s) in the table below.

    1. for 1UR-FE

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E28-5 (EFII) - A38*1-29 (IMO)
      		Always
      		Below 1 Ω
      E28-6 (EFIO) - A38*1-40 (IMI)
      E28-5 (EFII) or A38*1-29 (IMO) - Body ground
      		Always
      		10 kΩ or higher
      E28-6 (EFIO) or A38*1-40 (IMI) - Body ground
      E28-5 (EFII) - A52*2-29 (IMO)
      		Always
      		Below 1 Ω
      E28-6 (EFIO) - A52*2-40 (IMI)
      E28-5 (EFII) or A52*2-29 (IMO) - Body ground
      		Always
      		10 kΩ or higher
      E28-6 (EFIO) or A52*2-40 (IMI) - Body ground
      HINT:
      1. *1: for LHD
      2. *2: for RHD

    2. for 1GR-FE, 1VD-FTV

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E28-5 (EFII) - A38*1-10 (IMO)
      		Always
      		Below 1 Ω
      E28-6 (EFIO) - A38*1-11 (IMI)
      E28-5 (EFII) or A38*1-10 (IMO) - Body ground
      		Always
      		10 kΩ or higher
      E28-6 (EFIO) or A38*1-11 (IMI) - Body ground
      E28-5 (EFII) - A52*2-10 (IMO)
      		Always
      		Below 1 Ω
      E28-6 (EFIO) - A52*2-11 (IMI)
      E28-5 (EFII) or A52*2-10 (IMO) - Body ground
      		Always
      		10 kΩ or higher
      E28-6 (EFIO) or A52*2-11 (IMI) - Body ground
      HINT:
      1. *1: for LHD
      2. *2: for RHD

    3. for 3UR-FE

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E28-5 (EFII) - A38-29 (IMO)
      		Always
      		Below 1 Ω
      E28-6 (EFIO) - A38-40 (IMI)
      E28-5 (EFII) or A38-29 (IMO) - Body ground
      		Always
      		10 kΩ or higher
      E28-6 (EFIO) or A38-40 (IMI) - Body ground


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.REPLACE ECM

  1. for 1GR-FE

    1. Temporarily replace the ECM with a new one (Click here).

  1. for 1UR-FE

    1. Temporarily replace the ECM with a new one (Click here).

  1. for 1VD-FTV

    1. Temporarily replace the ECM with a new one (Click here).

  1. for 3UR-FE

    1. Temporarily replace the ECM with a new one (Click here).


NEXT


9.REGISTER ECU CODE

  1. Register the recognition codes in the ECUs.


NEXT


10.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


11.CHECK FOR DTC

  1. Check for DTCs (Click here).

    OK:
    DTC B2799 is not output.


NG
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
OK

END (ECM IS DEFECTIVE)