Dtc B2799 Immobiliser Malfunction

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

REGISTER ECU COMMUNICATION ID

CLEAR DTC

CHECK FOR DTC

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

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

REGISTER RECOGNITION CODE

REGISTER ECU COMMUNICATION ID

CLEAR DTC

CHECK FOR DTC

DTC B2799 Immobiliser Malfunction


DESCRIPTION

When there is a communication malfunction between the ECM and ID code box (immobiliser code ECU), or when the communication ID codes do not match, the ECM stores this DTC.

DTC Code
DTC Detection Condition
Trouble Area
B2799
Either condition is met (1 trip detection logic*):
  1. A malfunction in the communication or communication lines between the ECM and ID code box (immobiliser code ECU).
  2. A matching communication code cannot be verified during communication between the ECM and ID code box (immobiliser code ECU).
  1. ID code box (immobiliser code ECU)
  2. ECM
  3. Harness or connector
  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
Engine cannot be started
-

Related Data List and Active Test
DTC Code
Data List and Active Test
B2799
-

WIRING DIAGRAM


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


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 ECM 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."
HINT:
When DTC B2799 and the certification ECU (smart key ECU assembly) DTC are output simultaneously, first perform troubleshooting for the certification ECU (smart key ECU assembly) DTC.
1.REGISTER ECU COMMUNICATION ID

  1. Register the ECU communication ID.

    HINT:
    Refer to Service Bulletin.

NEXT


2.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


3.CHECK FOR DTC

  1. Perform "DTC Output Confirmation Operation" procedure.

  1. Check for DTCs (Click here).

    OK:
    DTC B2799 is not output.


NG
Go to step 4
OK

END (COMMUNICATION ID REGISTRATION WAS DEFECTIVE)

4.CHECK HARNESS AND CONNECTOR (ID CODE BOX [IMMOBILISER CODE ECU] - ECM)

  1. Disconnect the E124 ID code box (immobiliser code ECU) connector.

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

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

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

    Standard Resistance:
    for 3UR-FE:
    Tester Connection
    		Condition
    		Specified Condition
    E124-4 (EFIO) - A38-46 (IMI)
    		Always
    		Below 1 Ω
    E124-3 (EFII) - A38-48 (IMO)
    		Always
    		Below 1 Ω
    E124-4 (EFIO) or A38-46 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    E124-3 (EFII) or A38-48 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    for 1UR-FE, 1GR-FE (for LHD):
    Tester Connection
    		Condition
    		Specified Condition
    E124-4 (EFIO) - A38-40 (IMI)
    		Always
    		Below 1 Ω
    E124-3 (EFII) - A38-29 (IMO)
    		Always
    		Below 1 Ω
    E124-4 (EFIO) or A38-40 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    E124-3 (EFII) or A38-29 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    for 1UR-FE, 1GR-FE (for RHD):
    Tester Connection
    		Condition
    		Specified Condition
    E124-4 (EFIO) - A52-40 (IMI)
    		Always
    		Below 1 Ω
    E124-3 (EFII) - A52-29 (IMO)
    		Always
    		Below 1 Ω
    E124-4 (EFIO) or A52-40 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    E124-3 (EFII) or A52-29 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    for 1VD-FTV (for LHD):
    Tester Connection
    		Condition
    		Specified Condition
    E124-4 (EFIO) - A38-11 (IMI)
    		Always
    		Below 1 Ω
    E124-3 (EFII) - A38-10 (IMO)
    		Always
    		Below 1 Ω
    E124-4 (EFIO) or A38-11 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    E124-3 (EFII) or A38-10 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    for 1VD-FTV (for RHD):
    Tester Connection
    		Condition
    		Specified Condition
    E124-4 (EFIO) - A52-11 (IMI)
    		Always
    		Below 1 Ω
    E124-3 (EFII) - A52-10 (IMO)
    		Always
    		Below 1 Ω
    E124-4 (EFIO) or A52-11 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    E124-3 (EFII) or A52-10 (IMO) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.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


6.REGISTER RECOGNITION CODE

  1. Register the recognition codes in the ECUs.

    HINT:
    Refer to Service Bulletin.

NEXT


7.REGISTER ECU COMMUNICATION ID

  1. Register the ECU communication ID.

    HINT:
    Refer to Service Bulletin.

NEXT


8.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


9.CHECK FOR DTC

  1. Perform "DTC Output Confirmation Operation" procedure.

  1. Check for DTCs (Click here).

    OK:
    DTC B2799 is not output.
    Result
    		Proceed to
    OK
    		A
    NG (for 3UR-FE)
    		B
    NG (for 1UR-FE)
    		C
    NG (for 1GR-FE)
    		D
    NG (for 1GVD-FTV)
    		E


B
REPLACE ECM (Click here)

C
REPLACE ECM (Click here)

D
REPLACE ECM (Click here)

E
REPLACE ECM (Click here)
A

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