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:

Removal
1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the under cover. Front Under Cover > REMOVAL3. Drain the engine oil. Engine Oil > REPLACEMENT4. Disconnect the connector of the oil level switch from the engine harness, and remove the clip securing the harness to the front cams ...