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Nissan Sentra B18 (2020-2025) Service Manual: C1714-7b Low Tire Pressure Rr

Dtc Description

DTC Description

Note:

The Signal Tech II Tool [– (NI-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information.

  • Activate and display TPMS sensor IDs

  • Display tire pressure reported by the TPMS sensor

  • Read TPMS DTCs

  • Register TPMS sensor IDs

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

C1714-7B

Low tire pressure RR

(Low tire pressure rear right)

Diagnosis condition

Drive at a speed of 25 MPH (40 km/h) or more reaches 10 minutes in total.

Signal (terminal)

Tire pressure sensor signal.

Threshold

Rear right tire air pressure drops to Approx. 75% or less from the specified value.

Diagnosis delay time

10 minutes or more.
Note:

  • DTC may be detected depending on a tire pressure change caused by a seasonal air temperature change.

  • The low tire pressure warning lamp may be OFF due to an increase in tire internal temperature, resulted from driving.

POSSIBLE CAUSE

  • Rear right tire air pressure is low

  • Air leak because of rear right wheel change

FAIL-SAFE

—

Dtc Confirmation Procedure

DTC Confirmation Procedure

  1. PERFORM DTC CONFIRMATION

    1. CONSULT

      1. Ignition switch ON.

        CAUTION:

        Never start the engine.

      2. Check the tire pressure for all wheels and adjust to the specified value. Refer to Tire Air Pressure.

      3. Select “Self Diagnostic Result” mode of “BCM(AIR PRESSURE MONITOR)”.

      4. Drive the Nissan Sentra vehicle at 25 MPH (40 km/h) or more reaches 10 minuets in total.

    Is DTC “C1714-7B" 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

Note:

The Signal Tech II Tool [– (NI-50190)] can be used to perform the following functions: Refer to the Signal Tech II User Guide for additional information.

  • Activate and display TPMS sensor IDs

  • Display tire pressure reported by the TPMS sensor

  • Read TPMS DTCs

  • Register TPMS sensor IDs

  1. TIRE PRESSURE SENSOR ID REGISTRATION

    1. Perform tire pressure sensor ID registration. Refer to Work Procedure.

    Is tire pressure sensor ID registration completed?

    YES >>

    GO TO 2.

    NO >>

    Replace rear right tire pressure sensor. Refer to Removal and Installation.

  2. CHECK TIRE PRESSURE

    1. Check the tire pressure of all wheels. Refer to Tire Air Pressure.

    Is the inspection result normal?

    YES >>

    Perform “DTC Confirmation Procedure” (self diagnostic result) again. Refer to DTC Confirmation Procedure.

    NO >>

    GO TO 3.

  3. CHECK TIRE PRESSURE SIGNAL

    1. CONSULT

      1. Adjust tire pressure for all wheels to the specified value. Refer to Tire Air Pressure.

        Note:

        If the checked value is close to the standard, reduce the tire pressure, and then with the ignition switch ON, adjust the tire pressure again so that it is within the standard.

      2. Select "AIR PRESS RR" in "Data Monitor" mode of "BCM(AIR PRESSURE MONITOR)".

      3. Check that the rear right tire pressures match the standard value. Refer to Values on the Diagnosis Tool.

    Is the inspection result normal?

    YES >>

    After erasing DTC record, Inspection End.

    NO >>

    Replace rear right tire pressure sensor. Refer to Removal and Installation.

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