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Home >> Subaru >> 2022 >> WRX Premium, Standard Trans >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control System (Diagnostics) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC B1010: Body Control System (BIU) Malfunction

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.

CAUTION:

Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to  BODY CONTROL (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION  

  1. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Read the DTC of [Body Control] using the Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) 

    Is DTC B1010 displayed? (Current code)

    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. Turn the ignition switch to ON.
    5. Read the DTC of [Body Control] using the Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) 

    Is DTC B1010 displayed? (Current code)

    Yes  : Replace the body integrated unit. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT

    No  : Temporary EEPROM access error occurred.