Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0075 control module communication bus "pu-can" off

Subaru Legacy BN/BS (2015-2019) Service Manual / Lan system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0075 control module communication bus "pu-can" off

DTC DETECTING CONDITION:

Integrated unit communication is shut down because of high speed CAN error.

TROUBLE SYMPTOM:

CAN communication is not normal.

STEP	CHECK	YES	NO
1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.	Was the basic diagnostic procedure performed up to STEP 8-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0075 CONTROL MODULE COMMUNICATION BUS "PU-CAN" OFF	Perform the basic diagnostic procedure. Basic Diagnostic Procedure
2.CHECK DTC. 1) Start the engine. 2) Using the Subaru Select Monitor, read DTC of CAN system.	Is U0075 a current malfunction-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0075 CONTROL MODULE COMMUNICATION BUS "PU-CAN" OFF	It may be a temporary poor contact. Perform the clear memory.
3.CHECK CAN COMMUNICATION CIRCUIT. Check CAN communication circuit. CAN Communication Circuit Check > PROCEDURE	Is CAN communication circuit faulty-	Repair the faulty portion, following the diagnosis procedure.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0075 CONTROL MODULE COMMUNICATION BUS "PU-CAN" OFF
4.CHECK DTC. 1) Perform the inspection using the DTC check sheet. List of Diagnostic Trouble Code (DTC) > LIST 2) Using the Subaru Select Monitor, read DTC of CAN system.	Is U0075 a current malfunction-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0075 CONTROL MODULE COMMUNICATION BUS "PU-CAN" OFF	System is normal.
5.CHECK CONTROL MODULE. 1) Turn the ignition switch to OFF. 2) Disconnect the control modules other than body integrated unit in order. NOTE: When disconnecting ECM or combination meter, connect resistance of 120 - between CAN Hi and CAN Lo as an alternative of end resistance. 3) Turn the ignition switch to ON. 4) Using the Subaru Select Monitor, read DTC of CAN system.	Is there any control module that U0075 is not detected as current malfunction-	Replace the control module.	Repeat 1) to 4) in step 3 until U0075 is not detected.

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Seatbelt maintenance
To clean the seatbelts, use a mild soap and lukewarm water. Never bleach or dye the belts because this could seriously affect their strength. Inspect the seatbelts and attachments including the webbing and all hardware periodically for cracks, cuts, gashes, tears, damage, loose bolts or wor ...