S Nissan Sentra Manuals Library
Factory-style information for owners and repair work

Nissan Sentra techinfo

Find Nissan Sentra owner information, maintenance instructions, technical references, service procedures and useful repair pages in one clean online library.

Quick access Sentra Docs
B18 Owner's 2020-2025 Sentra owner information B18 Service 2020-2025 Sentra Workshop manual B17 Owner's 2013-2019 Sentra owner documentation B17 Service 2013-2019 Sentra service information

Nissan Sentra B18 (2020-2025) Service Manual: Sound Signal Lh Front

Diagnosis Procedure

Diagnosis Procedure

  1. CONNECTOR CHECK

    1. Check the AV control unit and Bose speaker amp. connectors for the following:

      • Proper connection

      • Damage

      • Disconnected or loose terminals

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair the terminals or connectors.

  2. CHECK SOUND SIGNAL FRONT LH CONTINUITY

      1. Ignition switch OFF.

      2. Disconnect Bose speaker amp. connector and AV control unit connector.

      3. Check continuity between Bose speaker amp. connector and AV control unit connector.

        Bose speaker amp.

        AV control unit

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        B97

        32

        M103

        2

        Yes

        40

        3

      4. Check continuity between Bose speaker amp. connector and ground.

        Bose speaker amp.

        —

        Continuity

        Connector

        Terminal

        B97

        32

        Ground

        No

        40

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair or replace harness or connectors.

  3. CHECK SOUND SIGNAL FRONT LH SIGNAL

      1. Connect Bose speaker amp. connector and AV control unit connector.

      2. Ignition switch ON.

      3. AV control unit ON.

      4. Check signal between AV control unit connector and ground.

        AV control unit

        Condition

        Reference value

        Connector

        (+)

        (−)

        Terminals

        M103

        2

        3

        Audio signal output

    Is the inspection result normal?

    YES >>

    Replace Bose speaker amp. Refer to Removal and Installation.

    NO >>

    Replace AV control unit. Refer to Removal and Installation.

    Power Supply and Ground Circuit
    Av Control Unit Diagnosis Procedure Diagnosis Procedure CHECK FUSE Check that the following fuse is not blown: Terminal No. Signal name Fuse No. Capacity 19 Battery power supply...
    Steering Switches
    Diagnosis Procedure Diagnosis Procedure CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE Ignition switch OFF. Disconnect combination switch connector. Check resistance betwe...

    Other materials:

    Ecu Diagnosis Information. Bcm, Combination Meter, Ecm, Tcm
    Bcm, Combination Meter, Ecm, Tcm List of Ecu Reference List of ECU Reference ECU Reference ECM Values On The Diagnosis Tool ...

    NISSAN Intelligent Key Operation
    With the NISSAN Intelligent Key system, the Nissan Sentra allows you to lock or unlock the doors and trunk lid without removing the Intelligent Key from your pocket, bag, or purse, providing everyday convenience and enhanced security. When you carry the Intelligent Key with you, all doors a ...

    Periodic Maintenance. Fuel System
    Fuel System Inspection Inspection Inspect fuel lines, fuel filler cap, and fuel tank for improper attachment, leakage, cracks, damage, loose connections, chafing or deterioration. If necessary, repair or replace damaged parts. ...