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Nissan Sentra B18 (2020-2025) Service Manual: Idle Start/stop System Inoperative

Diagnosis Procedure

Diagnosis Procedure

Note:

Check the idle start/stop system operation condition. Refer to System Description.

  1. CHECK START/STOP PROHIBIT CAUSE

    With CONSULT

    Select “Stop/Start prohibit cause data recorder” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.

    Does "Stop/Start prohibit cause data recorder" show fail-safe?

    YES >>

    GO TO 2.

    NO >>

    Check the operating status of system start/stop. Refer to System Description. After confirmation, 4.

  2. CHECK "Stop/Start error" OF CONSULT DATA MONITOR ITEM

    With CONSULT

    1. Select "Stop/Start error" in "Monitor Menu" of "DATA MONITOR" mode in CONSULT.

    2. Check the displayed data monitor items. Refer to Diagnosis Description.

    Are there any "NG" monitor items?

    YES >>

    After confirming the "NG" item, GO TO 3.

    NO >>

    GO TO 3.

  3. CHECK DTC

    With CONSULT

    Perform “All DTC Reading” with CONSULT.

    Does it detect the DTC associated with "Stop/Start error" of "DATA MONITOR"?

    YES >>

    Perform trouble diagnosis of detected DTC. After repairing the defective part, 4.

    NO >>

    GO TO 4.

  4. CHECK START/STOP INDICATOR / LAMP

    Check the start/stop indicator / lamp.

    WARNING LAMP/INDICATOR LAMP / INDICATOR

    CONDITION

    Start/Stop indicator / lamp

    Not blinking

    Is the start/stop indicator / lamp blinking?

    YES >>

    Refer to Symptom Table.

    NO >>

    INSPECTION END

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