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

Lexus ES (XZ10) Service Manual / Vehicle Interior / Mirror (ext) / Power Mirror Control System (for Hv 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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Terminals Of Ecu

TERMINALS OF ECU CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (a) Disconnect the J20 multiplex network master switch assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with the connector discon

Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for Gasoline Model)

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

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Terminals Of Ecu

Precaution