Subaru Crosstrek Service Manual: 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.
Immobilizer control module i/o signal Wiring diagram
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Read diagnostic trouble code (dtc) Operation
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