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Nissan Sentra B18 (2020-2025) Service Manual: Front Auxiliary Input Jacks

Diagnosis Procedure

Diagnosis Procedure

AUX JACK

  1. CHECK AUX JACK HARNESS CONTINUITY

      1. Ignition switch OFF.

      2. Disconnect AV control unit connector and front auxiliary input jacks connector.

      3. Check continuity between AV control unit connector and front auxiliary input jacks connector.

        AV control unit

        Front auxiliary input jacks

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M104

        27

        M105

        2

        Yes

        28

        3

        47

        1

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

        AV control unit

        —

        Continuity

        Connector

        Terminal

        M45

        27

        Ground

        No

        47

    Is the inspection result normal?

    YES >>

    Replace the front auxiliary input jacks. Refer to Removal and Installation.

    NO >>

    Repair or replace harness or connectors.

USB INTERFACE

  1. CHECK USB 1 INTERFACE HARNESS CONTINUITY

      1. Ignition switch OFF.

      2. Disconnect front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

      3. Check continuity between front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

        Front auxiliary input jacks

        Front auxiliary input jacks control unit

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M106

        7

        M118

        11

        Yes

        9

        13

        10

        14

        11

        15

        12

        16

      4. Check continuity between front auxiliary input jacks connector and ground.

        Front auxiliary input jacks

        —

        Continuity

        Connector

        Terminal

        M106

        9

        Ground

        No

        11

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair or replace harness or connectors.

  2. CHECK USB 2 INTERFACE HARNESS CONTINUITY

      1. Disconnect front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

      2. Check continuity between front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

        Front auxiliary input jacks

        Front auxiliary input jacks control unit

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M113

        13

        M119

        17

        Yes

        15

        19

        16

        20

        17

        21

        18

        22

      3. Check continuity between front auxiliary input jacks connector M113 and ground.

        Front auxiliary input jacks

        —

        Continuity

        Connector

        Terminal

        M113

        15

        Ground

        No

        17

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair or replace harness or connectors.

  3. CHECK USB INTERFACE HARNESS CONTINUITY

      1. Ignition switch OFF.

      2. Disconnect AV control unit connector and front auxiliary input jacks control unit connector.

      3. Check continuity between AV control unit connector and front auxiliary input jacks control unit connector.

        AV control unit

        Front auxiliary input jacks control unit

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M114

        61

        M117

        5

        Yes

        63

        7

        64

        8

        65

        9

        66

        10

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

        AV control unit

        —

        Continuity

        Connector

        Terminal

        M114

        63

        Ground

        No

        65

    Is the inspection result normal?

    YES >>

    Replace the front auxiliary input jacks. Refer to Removal and Installation.

    NO >>

    Repair or replace harness or connectors.

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