Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: B2e08 Microphone

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Telematics System / Dtc/circuit Diagnosis / B2e08 Microphone

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B2E08–01

Microphone

(Microphone)

1

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

Microphone signal

Threshold

7.2 V or more

Diagnosis delay time

1 second or more

2

Diagnosis condition

When ignition switch is ON.

Signal (terminal)

Microphone signal

Threshold

0.2 V or less

Diagnosis delay time

1 second or more

POSSIBLE CAUSE

FAIL-SAFE

Microphone does not operate

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 “IVC”.

      5. Check DTC.

    Is DTC B2E08–01 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 MICROPHONE SIGNAL CIRCUIT AND MICROPHONE VCC CIRCUIT CONTINUITY

      1. Ignition switch OFF.

      2. Disconnect TCU connector and microphone connector.

      3. Check continuity between TCU connector and microphone connector.

        TCU

        Microphone

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M160

        17

        R17

        1

        Yes

        18

        4

      4. Check the continuity between TCU connector and ground.

        TCU

        —

        Continuity

        Connector

        Terminal

        M160

        17

        Ground

        No

        18

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair or replace harness or connectors.

  2. CHECK MICROPHONE VCC VOLTAGE

      1. Connect TCU connector and microphone connector.

      2. Ignition switch ON.

      3. Check voltage between TCU connector and ground.

        (+)

        (−)

        Voltage

        (Approx.)

        TCU

        Connector

        Terminal

        M160

        18

        Ground

        5 V

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Replace TCU. Refer to Removal and Installation.

  3. CHECK MICROPHONE SIGNAL

    1. Check signal between TCU connector and ground.

      (+)

      (−)

      Condition

      Reference value

      TCU

      Connector

      Terminal

      M160

      17

      Ground

      Speak into microphone.

    Is the inspection result normal?

    YES >>

    Replace TCU. Refer to Removal and Installation.

    NO >>

    Replace microphone. Refer to Removal and Installation.

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