Dtc B2621 Communication Interruption

Power Source Network. Land Cruiser. Urj200, 202 Grj200 Vdj200
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

DTC B2621 Communication Interruption


DESCRIPTION

The multiplex tilt and telescopic ECU forms a network with the ECUs of other systems through the CAN communication bus, each ECU informs the other ECUs that it is connected to the network by outputting a specified signal (periodic signal) onto the CAN communication bus on a regular schedule. The multiplex tilt and telescopic ECU detects the connection of each ECU based on the signal.

DTC Code
DTC Detection Condition
Trouble Area
B2621
Periodic signal from the specified ECU has stopped.
  1. MS bus circuit
  2. Multiplex tilt and telescopic ECU branch wire or connector
  3. Main body ECU (cowl side junction block LH) CAN main wire or connector
  4. Multiplex tilt and telescopic ECU
  5. Main body ECU (cowl side junction block LH)

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Networking.Lin Communication System. Dtc B2621 Communication Interruption


INSPECTION PROCEDURE

1.CHECK FOR DTC

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2621 is output alone
    		A
    DTC B2621 and U1115 and/or U1002 are output
    		B
    HINT:
    When DTC B2621 and U1115 and/or U1002 are output simultaneously, perform the troubleshooting for DTC U1115 and/or U1002 first.


B
GO TO DIAGNOSTIC TROUBLE CODE CHART (Click here)
A

REPLACE MULTIPLEX TILT AND TELESCOPIC ECU (Click here)