Subaru Legacy BN/BS (2015-2019) Service Manual: General description

Dtc u0101 lost communication with tcm

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

Preparation tool

1. SPECIAL TOOLILLUSTRATIONTOOL NUMBERDESCRIPTIONREMARKS — (Newly adopted tool)SUBARU SELECT MONITOR 4Used for setting of each function and troubleshooting for electrical system.NOTE:For detailed op ...

Other materials:

Diagnostics with phenomenon inspection
1. BEAM LEVEL CONTROL DOES NOT FUNCTIONCAUTION:• Before performing diagnosis, check the fuse in this circuit.• Initialization is required after replacing the auto headlight beam leveler CM.WIRING DIAGRAM:NOTE:For the coupling connector, refer to “WIRING SYSTEM”.Headlight beam ...