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Nissan Sentra B18 (2020-2025) Service Manual: B2a1a Rear Camera

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B2A1A-38

Rear camera

(Rear camera image signal)

Diagnosis condition

Ignition switch ON

Signal (terminal)

RV video signal circuit (terminal 20)

Threshold

RV video signal circuit is open or short

Diagnosis delay time

—

POSSIBLE CAUSE

  • RV video signal circuit

  • Rear camera

  • Around view monitor control unit

FAIL-SAFE

  • Camera image may not be displayed.

  • MOD (Moving Object Detection) function is stopped.

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 “AVM”.

      5. Check DTC.

    Is DTC B2A1A–38 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 CONTINUITY OF REAR CAMERA POWER SUPPLY AND GROUND CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect around view monitor control unit connector and rear camera connector.

      3. Check continuity between around view monitor control unit connector and rear camera connector.

        Around view monitor control unit

        Rear camera

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        B72

        17

        B69

        7

        Yes

        18

        8

      4. Check continuity between around view monitor control unit connector and ground.

        Around view monitor control unit

        —

        Continuity

        Connector

        Terminal

        B72

        18

        Ground

        No

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair harness or connector.

  2. CHECK VOLTAGE OF REAR CAMERA POWER SUPPLY

      1. Connect around view monitor control unit connector and rear camera connector.

      2. Ignition switch ON.

      3. Check voltage between around view monitor control unit connector and ground.

        (+)

        (−)

        Condition

        Voltage

        (Approx.)

        Around view monitor control unit

        Connector

        Terminal

        B72

        18

        Ground

        “CAMERA” switch is ON or shift position is “R”.

        6.0 V

    Is inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Replace around view monitor control unit. Refer to Removal and Installation.

  3. CHECK CONTINUITY OF REAR CAMERA IMAGE SIGNAL CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect around view monitor control unit connector and rear camera connector.

      3. Check continuity between around view monitor control unit connector and rear camera connector.

        Around view monitor control unit

        Rear camera

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        B72

        19

        B69

        1

        Yes

        20

        5

      4. Check continuity between around view monitor control unit harness connector and ground.

        Around view monitor control unit

        —

        Continuity

        Connector

        Terminal

        B72

        20

        Ground

        No

    Is inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    Repair harness or connector.

  4. CHECK REAR CAMERA IMAGE SIGNAL

      1. Connect around view monitor control unit connector and rear camera connector.

      2. Ignition switch ON.

      3. Check signal between around view monitor control unit connector.

        Around view monitor control unit

        Condition

        Reference value

        Connector

        Terminals

        (+)

        (—)

        B72

        20

        19

        “CAMERA” switch is ON or shift position is “R”.

    Is inspection result normal?

    YES >>

    Replace around view monitor control unit. Refer to Removal and Installation.

    NO >>

    Replace rear camera. Refer to Removal and Installation.

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