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

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

Detected when CAN data from ECM does not arrive.

NOTE:

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

Dtc u0327 software incompatibility with vehicle security control module

Detected when CAN data is not received from keyless access CM.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Dtc u0164 lost communication with hvac control module

Detected when CAN data from A/C CM does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Removal
1. MAIN SWITCH1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. NOTE2. Remove the trim panel - front door. Door Trim > REMOVAL3. Remove the panel - power window main switch.CAUTION:Be careful not to damage the trim panel - front door ...