Honda Civic manuals

Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0002 can communication error

DTC DETECTING CONDITION:

Data to be received via CAN communication do not arrive.

A/C cooperation control does not operate.

TROUBLE SYMPTOM:

A/C does not operate fully automatically.

STEPCHECKYESNO

1.CHECK LAN SYSTEM.

Check LAN system using the Subaru Select Monitor. Basic Diagnostic Procedure

Is there any fault-

Perform the diagnosis according to the inspection for LAN system.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0002 CAN COMMUNICATION ERROR

2.CHECK A/C CM.

1) Replace with a normally operating A/C CM.

2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)

Is U0002 detected-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0002 CAN COMMUNICATION ERROR

Replace the A/C CM. Control Unit > REMOVAL

3.CHECK CAN COMMUNICATION CIRCUIT.

Check the CAN communication circuit. CAN Communication Circuit Check > LIST

Is the CAN communication circuit normal-

It is possible that temporary poor communication occurs. Clear the memory. Clear Memory Mode

Repair or replace the CAN communication circuit.

Diagnostic procedure with diagnostic trouble code (dtc)
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