Lexus ES: Lost Communication With Body Control Module "B" (U0142)

Lexus ES (XZ10) Service Manual / Vehicle Interior / Mirror (ext) / Power Mirror Control System (for Gasoline Model With Memory) / Lost Communication With Body Control Module "B" (U0142)

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
U0142	Lost Communication with Main Body ECU	No communication with main body ECU (multiplex network body ECU)	CAN communication system Main body ECU (multiplex network body ECU)

PROCEDURE

1.	GO TO CAN COMMUNICATION SYSTEM

HINT:

Refer to CAN Communication System.

Click here

END

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Data List / Active Test

DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. When diagnosing symptoms such as hesitation, rough idle, or other small symptoms usi

Open in B Power Line (B242F)

DESCRIPTION The headlight ECU sub-assembly operates using the power source voltage input from the IG terminal and ECUB terminal. The power source voltage of the ECUB terminal is supplied when the main body ECU (multiplex network body ECU) turns the ECUB power supply relay (H-LP LH relay and H-LP RH

Lexus ES: Lost Communication With Body Control Module "B" (U0142)

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Data List / Active Test

Open in B Power Line (B242F)