Subaru Crosstrek Service Manual: Dtc b1577 imm control module eeprom

DTC DETECTING CONDITION:

• Body integrated unit malfunctioning

• Failed to access ROM inside the body integrated unit.

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.

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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