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Nissan Sentra B18 (2020-2025) Service Manual: B2e04 Internal Battery

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B2E04-16

Internal battery

(Internal battery)

Diagnosis condition

When ignition switch is ON

Signal (terminal)

Internal battery remaining

Threshold

25% or less

Diagnosis delay time

1 second or more

POSSIBLE CAUSE

Internal battery discharged

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 B2E04–16 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. INTERNAL BATTERY CHARGING

    1. Ignition switch ON or engine idling more than one hour for internal battery charging of TCU.

    YES >>

    GO TO 2.

  2. PERFORM CONFIRMATION PROCEDURE AGAIN

    1. CONSULT

      1. Ignition switch ON.

      2. Erase DTC.

      3. Perform DTC confirmation procedure again. Refer to DTC Confirmation Procedure.

    Is DTC B2E04–16 detected again?

    YES>>

    Replace TCU. Refer to Removal and Installation.

    NO>>

    Inspection End.

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