Subaru Legacy Service Manual: Dtc b1010 body control system (biu) malfunction

Subaru Legacy Service Manual / Body control system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc b1010 body control system (biu) malfunction

DTC DETECTING CONDITION:

System error in body integrated unit (integrated unit EEPROM malfunction)

Time Needed for Diagnosis:

Immediately

TROUBLE SYMPTOM:

LAN communication immobilizer function may not be executed normally.

STEP	CHECK	YES	NO
1.CHECK DTC. Check DTC indicated by body integrated unit. Read Diagnostic Trouble Code (DTC)	Is DTC B1010 displayed- (Current malfunction)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1010 BODY CONTROL SYSTEM (BIU) MALFUNCTION	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. Read Diagnostic Trouble Code (DTC)	Is DTC B1010 displayed- (Current malfunction)	Replace the body integrated unit. Body Integrated Unit	Temporary EEPROM access error occurred.

Dtc b1011 battery control power supply

DTC DETECTING CONDITION:• Voltage failure caused by poor contact of battery power supply control circuit• Battery voltage of body integrated unit is not within the range of 8.3 — 16.7 V. ...

Dtc b1411 immobilizer antenna

For detailed diagnosis procedure, refer to IMMOBILIZER (DIAG). Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1411 IMMOBILIZER ANTENNA ...

Other materials:

Preparation tool
1. GENERAL TOOLTOOL NAMEREMARKSCircuit testerUsed for measuring resistance, voltage and current.NOTE:• When measuring the standby current, prepare a circuit tester which can measure down to 1 mA.• When measuring the standby current for models with keyless access function, prepare an anal ...