Nissan Murano: Dtc/circuit Diagnosis / B2ef0 Internal Battery

Nissan Murano (Z52) 2015-2024 Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Telematics System / Dtc/circuit Diagnosis / B2ef0 Internal Battery

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)
DTC detection condition
B2EF0

INTERNAL BATTERY

(Internal battery)
CIRC VOLT BELOW THRESHOLD Diagnosis condition When ignition switch is ON.
Signal (terminal) —
Threshold TCU internal malfunction
Diagnosis delay time Less than 1 second
INTERNAL ELECTRONIC ERROR Diagnosis condition When ignition switch is ON.
Signal (terminal) —
Threshold TCU internal malfunction
Diagnosis delay time Less than 1 second
INCORRECT CMPNENT INSTALLED Diagnosis condition When ignition switch is ON.
Signal (terminal) —
Threshold TCU internal malfunction
Diagnosis delay time Less than 1 second
OVER TEMPERATURE Diagnosis condition When ignition switch is ON.
Signal (terminal) —
Threshold TCU internal malfunction
Diagnosis delay time Less than 1 second

POSSIBLE CAUSE

TCU

FAIL-SAFE

Telematics system function stops

DTC Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Ignition switch ON.

  2. Erase DTC.

  3. Select “Self Diagnostic Result” mode of “TELEMATICS”.

  4. Check DTC.

Is DTC B2EF0 detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: Inspection End.

Diagnosis Procedure

CONFIRM DTC

Confirm which DTC is detected.

Is DTC B2EF0 [CIRC VOLT BELOW THRESHOLD] detected ?

YES>>

GO TO 2.

NO>>

GO TO 3.

CHARGE INTERNAL BATTERY

  1. Start engine.

  2. Run engine for 30 minutes to allow TCU internal battery to charge.

>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

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

Is DTC B2EF0 detected again?

YES>>

Replace TCU. Refer to Removal and Installation.

NO>>

Inspection End.

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