DTC    U0145    Lost Communication With Body Control Module "E"


DESCRIPTION

  1. When the seat belt control ECU is communicating to the network gateway ECU, it uses the CAN communication line. When the seat belt control ECU is communicating to the airbag sensor assembly center, it uses the BEAN line between the gateway ECU and airbag sensor assembly center.
  2. The seat belt control ECU receives the following: 1) driver and front passenger seat belt buckle switch status and malfunction information from the airbag sensor assembly center, and 2) vehicle type information from the network gateway ECU.
  3. This DTC is output when information from the BEAN line is blocked. There is a possibility that a malfunction has occurred in the airbag sensor assembly center or network gateway ECU because, in this case, they are the only components that communicate through the BEAN.

    DTC No.
    		DTC Detection Condition
    		Trouble Area
    U0145
    		Information sent from airbag sensor assembly center or network gateway ECU to seat belt control ECU is blocked for 1.5 seconds
    1. Airbag sensor assembly center
    2. Network gateway ECU
    3. Seat belt control ECU

WIRING DIAGRAM


E070230E01


INSPECTION PROCEDURE

NOTICE:
When the seat belt control ECU is replaced with a new one, Active Test must be performed (Click here).

1.CHECK DTC (MULTIPLEX COMMUNICATION SYSTEM)

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC B1281 is not output.



NG
GO TO MULTIPLEX COMMUNICATION SYSTEM
OK


2.CHECK DTC (AIRBAG SYSTEM)

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC is not output.



NG
GO TO AIRBAG SYSTEM
OK

CHECK AND REPLACE SEAT BELT CONTROL ECU