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

Dtc u0100 lost communication with ecm/pcm "a"

NOTE:Refer to “LAN SYSTEM (DIAGNOSTICS)” for diagnostic procedure. Basic Diagnostic Procedure1. OUTLINE OF DIAGNOSIS (ENGINE TYPE FB)• Detect malfunction of CAN communication.• ...

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:

Inspection
1. COMMUNICATION FOR INITIALIZING IMPOSSIBLEWhen communication with the radar sensor is impossibleDETECTING CONDITION:• Defective harness connector• Power supply circuit malfunction• Defective radar sensor• Defective CAN communication circuit• Defective Subaru Select Mo ...