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Nissan Sentra B18 (2020-2025) Service Manual: B2e0b Telematics Switch

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B2E0B-01

SOS LED (Auto)

[SOS LED (Auto)]

1

Diagnosis condition

When ignition switch is ON

Signal (terminal)

SOS switch LED (Green) signal (terminal 5)

Threshold

Not connected or open circuit

Diagnosis delay time

1 second or more

2

Diagnosis condition

When ignition switch is ON

Signal (terminal)

SOS switch LED (Green) signal (terminal 5)

Threshold

1.2 V or less

Diagnosis delay time

1 second or more

3

Diagnosis condition

When ignition switch is ON

Signal (terminal)

SOS switch LED (Green) signal (terminal 5)

Threshold

5.8 V or more

Diagnosis delay time

1 second or more

POSSIBLE CAUSE

  • Moonroof switch assembly (telematics switch) is not connected,

  • SOS switch LED (Green) signal is open

  • SOS switch LED (Green) signal is short to ground

  • SOS switch LED (Green) signal is short to battery

FAIL-SAFE

Telematics system 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 B2E0B–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 SOS SWITCH LED (GREEN) SIGNAL

      1. Ignition switch ON.

      2. Check the voltage between TCU connector and ground.

        (+)

        (-)

        Condition

        Voltage

        (Approx.)

        TCU

        Connector

        Terminal

        M160

        5

        Ground

        SOS switch LED (Green) not illuminated

        5 V

        SOS switch LED (Green) illuminated

        0 V

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Replace TCU. Refer to Removal and Installation.

  2. CHECK SOS SWITCH LED (GREEN) SIGNAL CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect TCU connector and moonroof switch assembly (telematics switch) connector.

      3. Check the continuity between TCU connector and moonroof switch assembly (telematics switch) connector.

        TCU

        Moonroof switch assembly (telematics switch)

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M160

        5

        R27

        5

        Yes

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Repair or replace harness or connector.

  3. CHECK SOS SWITCH LED (GREEN) SIGNAL CIRCUIT FOR SHORT

      1. Ignition switch ON.

      2. Check the voltage between TCU connector and ground.

        (+)

        (-)

        Voltage

        (Approx.)

        TCU

        Connector

        Terminal

        M160

        5

        Ground

        0 V

    Is the inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    Repair or replace harness or connector.

  4. CHECK SOS SWITCH LED (GREEN) SIGNAL CIRCUIT FOR SHORT

    1. Ignition switch OFF.

    2. Check the continuity between TCU connector and ground.

      TCU

      —

      Continuity

      Connector

      Terminal

      M160

      5

      Ground

      No

    Is the inspection result normal?

    YES >>

    Replace moonroof switch assembly (telematics switch). Refer to Removal and Installation.

    NO >>

    Repair or replace harness or connector.

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