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Nissan Sentra B18 (2020-2025) Service Manual: B1321 Front Right Tweeter

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B1321–13

Front right tweeter

(Front tweeter RH)

[OPEN]

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

  • FR SP RH+ (terminal 11)

  • FR SP RH− (terminal 12)

Threshold

–

Diagnosis delay time

30 seconds or more

POSSIBLE CAUSE

  • FR SP RH+ open

  • FR SP RH− open

  • Front tweeter RH

  • AV control unit

FAIL-SAFE

Front tweeter RH inoperative

Confirmation Procedure

Confirmation Procedure

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. CONSULT

      1. Ignition switch ON.

      2. Ignition switch OFF and wait at least 30 seconds.

      3. Ignition switch ON and wait at least 30 seconds or more.

      4. Select “Self Diagnostic Result” mode of “MULTI AV”.

      5. Check DTC.

    Is DTC B1321–13 detected?

    YES>>

    Proceed to DTC Diagnosis Procedure.

    NO>>

    To check malfunction symptom before repair: Refer to Intermittent Incident.

    NO>>

    Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK SOUND SIGNAL CIRCUITS FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect AV control unit connector, front tweeter RH connector.

      3. Check the continuity between AV control unit connector and front tweeter RH connector.

        AV control unit

        Front tweeter RH

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M103

        11

        M47

        1

        Yes

        12

        2

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair or replace harness or connectors.

  2. CHECK FRONT TWEETER RH SIGNAL

      1. Connect AV control unit connector and front tweeter RH connector.

      2. Ignition switch ON.

      3. AV control unit ON.

      4. Check signal between the terminals of AV control unit connector .

        AV control unit

        Condition

        Reference value

        Connector

        (+)

        (−)

        Terminals

        M103

        11

        12

        Audio signal output

    Is the inspection result normal?

    YES >>

    Replace front tweeter RH. Refer to Removal and Installation.

    NO >>

    Replace AV control unit. Refer to Removal and Installation.

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