Subaru Crosstrek Service Manual: List of diagnostic trouble code (dtc) List

Subaru Crosstrek Service Manual / Immobilizer (diagnostics) / List of diagnostic trouble code (dtc) List

IMMOBILIZER (DIAGNOSTICS) > List of Diagnostic Trouble Code (DTC)

LIST

NOTE:

If DTCs irrelevant to the immobilizer are detected, perform diagnosis according to the DTCs irrelevant to the immobilizer first.

1. ECM

DTC	Item	Contents of diagnosis	Index No.
B1570	ANTENNA	Faulty antenna	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1570 ANTENNA">
B1571	REFERENCE CODE INCOMPATIBILITY (IMMOBILIZER CM TO ECM)	Reference code incompatibility between body integrated unit and ECM	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1571 REFERENCE CODE INCOMPATIBILITY (IMMOBILIZER CM TO ECM)">
B1572	IMM CIRCUIT EXCEPT ANTENNA CIRCUIT	Communication failure between body integrated unit and ECM	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1572 IMM CIRCUIT EXCEPT ANTENNA CIRCUIT">
B1574	KEY COMMUNICATION	Communication failure between key and body integrated unit	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION">
B1575	INCORRECT IMMOBILIZER KEY	Incorrect immobilizer key (use of unregistered key in body integrated unit)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1575 INCORRECT IMMOBILIZER KEY">
B1576	EGI CONTROL MODULE EEPROM	ECM malfunctioning	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1576 EGI CONTROL MODULE EEPROM">
B1577	IMM CONTROL MODULE EEPROM	Body integrated unit malfunctioning	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1577 IMM CONTROL MODULE EEPROM">
B1578	METER	Except for C5 model

• Reference code incompatibility between combination meter and body integrated unit

• Communication failure between body integrated unit and ECM

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1578 METER">

C5 model

• Reference code incompatibility between body integrated unit and security control module

• Communication failure between body integrated unit and ECM

2. BODY INTEGRATED UNIT

DTC	Item	Contents of diagnosis	Index No.	Relation between ECM and DTC
B1401	METER COLLATION	Reference code incompatibility between combination meter and body integrated unit	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1401 METER COLLATION">	B1578
B1402	IMMOBILIZER KEY COLLATION

• Incorrect immobilizer key (use of unregistered key in body integrated unit)

• Faulty antenna

• Communication failure between key and body integrated unit

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1402 IMMOBILIZER KEY COLLATION">

• B1575

• B1570

• B1574

B1405

SCU COLLATION

Reference code incompatibility between body integrated unit and security control module

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1405 SCU COLLATION">

B1578

B1406

SCU_EEPROM

Malfunction of security control module

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1406 SCU_EEPROM">

B1578

B1407

MET COMMUNICATION

Communication failure between body integrated unit and combination meter

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1407 MET COMMUNICATION">

B1578

B1408

METER NON-VOLATILE MEMORY

Combination meter malfunction

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1408 METER NON-VOLATILE MEMORY">

B1578

B1409

SCU COMMUNICATION

Communication failure between body integrated unit and security control module

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1409 SCU COMMUNICATION">

B1578

B1410

TRANSPONDER COMMUNICATION

Communication failure between key and body integrated unit

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1410 TRANSPONDER COMMUNICATION">

B1574

B1411

IMMOBILIZER ANTENNA

Faulty antenna

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1411 IMMOBILIZER ANTENNA">

B1570

NOTE:

The starter relay control is performed in immobilizer system. When the body integrated unit detects a nonconformity of reference code, it immediately outputs a starter relay cut signal to ECM, and then ECM stops the starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Check that the engine does not start on the DTC of body integrated unit.

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