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Home >> Subaru >> 2021 >> Forester Base >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Infotainment System (Diagnostics) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC B2253: Damaging A Coil Due To The Electric Current To The Speaker Coil

DTC B2253: Damaging A Coil Due To The Electric Current To The Speaker Coil

DTC detecting condition: 

Detected when a speaker that operates properly is not connected.

Trouble symptom: 

Does not sound.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to INFOTAINMENT (DIAGNOSTICS)>General Description>CAUTION .
  1. CHECK DTC  .
    1. Turn the ignition switch to ON.
    2. Using the Subaru Select Monitor, perform the clear memory of [Infotainment]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
    3. Turn the ignition switch OFF → ON.
    4. Read the DTC of [Infotainment] using the Subaru Select Monitor. Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC B2253 displayed? (Current malfunction)

    Yes:  Go to  2 .

    No:  Even if DTC is displayed, 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.
  2. CHECK CONNECTOR  .

    Check the harness between audio connector or navigation unit connector and audio amplifier.

    Is the check result OK?

    Yes:  Replace the audio or navigation unit. Ref. to ENTERTAINMENT AND MONITORING>AUDIO . Ref. to ENTERTAINMENT AND MONITORING>NAVIGATION BODY .

    No:  Repair the harness or replace the components.