Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc u0100 lost communication with ecm/pcm "a"

Subaru Legacy BN/BS (2015-2019) Service Manual / Body control system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc u0100 lost communication with ecm/pcm "a"

No data is received from ECM.

NOTE:

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

Dtc u0073 control module communication bus off

Detected when malfunction occurs in CAN line. (Bus off)NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0427 invalid data received from vehicle security control module

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

Other materials:

Removal
1. Shift the select lever to “N” range.2. Disconnect the ground terminal from battery sensor. NOTE3. Lift up the vehicle.4. Remove the center exhaust pipe. (2.5 L model) Center Exhaust Pipe > REMOVAL5. Remove the front exhaust pipe and rear exhaust pipe. (3.6 L model) Front Exhaust Pi ...