Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: B24a4-11 Intake Sensor

Nissan Sentra B18 (2020-2025) Service Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System :: Automatic Air Conditioner / Dtc/circuit Diagnosis / B24a4-11 Intake Sensor

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24A4-11

INTAKE SENSOR

(Intake sensor)

Diagnosis condition

Ignition switch ON

Signal (Terminal)

Intake sensor signal

Threshold

The intake sensor recognition temperature is too high [more than 212°F (100°C)]

Diagnosis delay time

2 seconds or more

POSSIBLE CAUSE

FAIL-SAFE

—

Confirmation Procedure

Confirmation Procedure

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. CONSULT

      1. Ignition switch ON.

      2. Select “Self Diagnostic Result” mode of “HVAC”.

      3. Check DTC.

    Is DTC detected?

    YES >>

    Refer 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 INTAKE SENSOR SIGNAL

      1. Ignition switch ON.

      2. Check voltage between A/C auto amp. harness connector.

        A/C auto amp.

        Voltage

        (Approx.)

        Connector

        Terminals

        +

        -

        M33

        23

        26

    Is the inspection result normal?

    YES >>

    Replace A/C auto amp. Refer to Removal and Installation.

    NO >>

    GO TO 2.

  2. CHECK INTAKE SENSOR POWER SUPPLY

      1. Ignition switch OFF.

      2. Disconnect intake sensor connector.

      3. Ignition switch ON.

      4. Check voltage between intake sensor harness connector and ground.

        +

        -

        Voltage

        (Approx.)

        Intake sensor

        Connector

        Terminal

        M169

        1

        Ground

        5 V

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    GO TO 4.

  3. CHECK INTAKE SENSOR

    1. Check intake sensor. Refer to Diagnosis Procedure.

    Is the inspection result normal?

    YES >>

    Replace A/C auto amp. Refer to Removal and Installation.

    NO >>

    Replace intake sensor. Refer to Removal and Installation.

  4. CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

      1. Ignition switch OFF.

      2. Disconnect A/C auto amp. connector.

      3. Check continuity between intake sensor harness connector and ground.

        Intake sensor

        —

        Continuity

        Connector

        Terminal

        M169

        1

        Ground

        No

    Is the inspection result normal?

    YES >>

    Replace A/C auto amp. Refer to Removal and Installation.

    NO >>

    Repair harness or connector.

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Removal and Installation
Removal and Installation REMOVAL Warning: Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least three minutes. Do not use air tools or electric tools for servicing. ...

Precaution for Harness Repair
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