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Subaru Crosstrek Service Manual: Dtc b1406 scu_eeprom

IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC B1406 SCU_EEPROM

DTC DETECTING CONDITION:

Defective security control module

ROM of security control module cannot be accessed

CAUTION:

When the security control module is replaced, registration of the immobilizer system is required. For details, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

STEPCHECKYESNO

1.PERFORM SECURITY CONTROL MODULE REGISTRATION.

1) Perform security control module registration. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

2) Perform the Clear Memory Mode. Clear Memory Mode">

3) Read the DTC of the body integrated unit. Read Diagnostic Trouble Code (DTC)">

Is DTC B1406 detected?

Replace the security control module. Security Control Module">

Finish the diagnosis.

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