Dtc B2796 No Communication In Immobiliser System


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

REPLACE TRANSPONDER KEY ECU ASSEMBLY

CLEAR DTC

CHECK FOR DTC

REPLACE KEY

CLEAR DTC

CHECK FOR DTC

DTC B2796 No Communication in Immobiliser System


DESCRIPTION

This DTC is stored when a key is inserted into the ignition key cylinder but no communication occurs between the key and transponder key ECU assembly.

DTC No.
DTC Detection Condition
Trouble Area
DTC Output Confirmation Operation
B2796
The key ID code cannot be transmitted to the transponder key ECU assembly (1 trip detection logic*).
  1. Key
  2. Harness or connector
  3. Transponder key coil
    Transponder key ECU assembly
Insert the key into the ignition key cylinder
*: 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 No.
Data List and Active Test
B2796
-

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Theft Deterrent Keyless Entry.Entry And Start System (For Entry Function). Dtc B2796 No Communication In Immobiliser System


INSPECTION PROCEDURE

NOTICE:
  1. If the transponder key ECU assembly or key is replaced, refer to the Service Bulletin.
  2. After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
  3. When using the GTS with the vehicle ignition switch off, connect the GTS to the vehicle 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 the Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Immobiliser. 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.
1.CLEAR DTC

  1. Clear the DTCs (LandCruiser RM000001GV80AJX.html).


NEXT


2.CHECK FOR DTC

  1. Insert and remove each registered key one at a time, and check for DTCs each time (LandCruiser RM000001GV80AJX.html).

    HINT:
    Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
    OK:
    DTC B2796 is not output.
    Result
    Result
    		Proceed to
    DTC B2796 is not output
    		A
    DTC B2796 is output for all of the keys
    		B
    DTC B2796 is output for any of the keys
    		C


B
Go to step 3

C
Go to step 6
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)

3.REPLACE TRANSPONDER KEY ECU ASSEMBLY

  1. Replace the transponder key ECU assembly with a new one.

    HINT:
    Refer to the Service Bulletin.
    NOTICE:
    Key ID code registration is necessary when replacing the transponder key ECU assembly.
    Refer to the Service Bulletin.

NEXT


4.CLEAR DTC

  1. Clear the DTCs (LandCruiser RM000001GV80AJX.html).


NEXT


5.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000001GV80AJX.html).

    HINT:
    Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
    OK:
    DTC B2796 is not output.


NG
REPLACE KEY FOR WHICH DTC WAS OUTPUT
OK

END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

6.REPLACE KEY

  1. Replace the key for which the DTC was stored.

    NOTICE:
    Key ID code registration is necessary when replacing the key.
    Refer to the Service Bulletin.

NEXT


7.CLEAR DTC

  1. Clear the DTCs (LandCruiser RM000001GV80AJX.html).


NEXT


8.CHECK FOR DTC

  1. Check for DTCs (LandCruiser RM000001GV80AJX.html).

    HINT:
    Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
    OK:
    DTC B2796 is not output.
    Result
    Result
    		Proceed to
    B2796 is not output
    		A
    B2796 is output
    		B


B
REPLACE TRANSPONDER KEY ECU ASSEMBLY
A

END (KEY WAS DEFECTIVE)