Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0401 invalid data received from ecm/pcm "a"

Received error data from ECM.

NOTE:

Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE

Received error data from TCM.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

No data is received from keyless access CM.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Diagnostic procedure for subaru select monitor communication communication for initializing impossible
DIAGNOSIS:Defective CAN communication circuitTROUBLE SYMPTOM:• LAN system is abnormal.• Communication failure between Subaru Select Monitor and A/C CMWIRING DIAGRAM:NOTE:For the coupling connector, refer to “WIRING SYSTEM”.• Air conditioning system Air Conditioning Sys ...