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

Dtc u0100 lost communication with ecm/pcm "a"

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

Preparation tool

CAUTION:To measure the voltage and resistance of airbag system component, be sure to use the specified test harness.1. SPECIAL TOOL• SUBARU SELECT MONITORILLUSTRATIONTOOL NUMBERDESCRIPTIONREMARK ...

Other materials:

Check power supply and ground line of engine control module (ecm)
CAUTION:After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.WIRING DIAGRAM:• Engine Electrical System ENGINE TYPE FB (WITHOUT PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM• E ...