Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b1577 imm control module eeprom

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

DTC B1577 IMM CONTROL MODULE EEPROM

DTC DETECTING CONDITION:

Body integrated unit malfunctioning

Failed to access ROM inside the body integrated unit.

CAUTION:

When the body integrated unit 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 ECM REGISTRATION.

Perform ECM registration. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Is registration complete?

Finish the diagnosis.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1577 IMM CONTROL MODULE EEPROM">Go to Step 2.

2.PERFORM ECM REGISTRATION.

1) Perform the Clear Memory Mode. (ECM and body integrated unit) Clear Memory Mode">

2) Perform ECM registration. Refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume.

Is registration complete?

Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE:

In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Replace the body integrated unit. Body Integrated Unit">

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