DTC B1010: Body Control System (BIU) Malfunction

DTC detecting condition: 

System error in body integrated unit

Trouble symptom: 

LAN communication immobilizer function may not be executed normally.

1. CHECK DTC  .

   Check DTC indicated by body integrated unit. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) 

   Is DTC B1010 a current malfunction?

   Yes: Go to  2

   No: Temporary EEPROM access error occurred.

2. CHECK CONNECTOR  .
   1. Turn the ignition switch to OFF.
   2. Disconnect the body integrated unit connector.
   3. Connect the disconnected connectors.
   4. Read the DTC of body integrated unit using Subaru Select Monitor. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) 

   Is DTC B1010 displayed? (Current malfunction)

   Yes: Replace the body integrated unit. Ref. to SECURITY AND LOCKS>Body Integrated Unit

   No: Temporary EEPROM access error occurred.