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Home >> Nissan-Datsun >> 2009 >> Sentra SE-R >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Transmission (CVT) >> Service Information >> DTC P0710 CVT Fluid Temperature Sensor Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK CVT FLUID TEMPERATURE SENSOR SIGNAL

    With CONSULT-III 

    1. Start engine.
    2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
    3. Read out the value of "ATF TEMP SEN".
    ITEM NAME VALUE CHART

    Item name Condition Display value (Approx.)
    ATF TEMP SEN When CVT fluid temperature is 20°C (68°F) 2.0 V
    When CVT fluid temperature is 80°C (176°F) 1.0 V

    Without CONSULT-III 

    1. Start engine.
    2. Check voltage between TCM connector terminals.
      CONNECTOR TERMINAL VOLTAGE CHART

      Name Connector Terminal Temperature °C (°F) Voltage (Approx.)
      CVT fluid temperature sensor F23 13 - 25 20 (68) 2.0 V
      80 (176) 1.0 V
    3. Turn ignition switch OFF.
    4. Disconnect TCM connector.
    5. Check if there is continuity between connector terminal and ground.

    OK or NG 

    OK: GO TO 5.

    NG: GO TO 2.

  2. CHECK CVT FLUID TEMPERATURE SENSOR CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect the TCM connector.
    3. Check resistance between TCM connector terminals.
    CONNECTOR TERMINAL RESISTANCE CHART

    Name Connector Terminal Temperature °C (°F) Resistance (Approx.)
    CVT fluid temperature sensor F23 13 - 25 20 (68) 6.5 kΩ
    80 (176) 0.9 kΩ

    OK or NG 

    OK: GO TO 5.

    NG: GO TO 3.

  3. CHECK CVT FLUID TEMPERATURE SENSOR
    1. Turn ignition switch OFF.
    2. Disconnect CVT unit harness connector.
    3. Check resistance between CVT unit harness connector terminals.
      CONNECTOR TERMINAL RESISTANCE CHART

      Name Connector Terminal Temperature °C (°F) Resistance (Approx.)
      CVT fluid temperature sensor F46 17 - 19 20 (68) 6.5 kΩ
      80 (176) 0.9 kΩ
      Fig 1: Checking Resistance Between CVT Unit Harness Connector Terminals
      G04916072Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Reinstall any part removed.

    OK or NG 

    OK: GO TO 4.

    NG: Replace the transaxle assembly. Refer to "REMOVAL AND INSTALLATION (MR20DE) ".

  4. CHECK HARNESS BETWEEN TCM AND CVT FLUID TEMPERATURE SENSOR
    1. Turn ignition switch OFF.
    2. Disconnect the TCM connector (A) and CVT unit harness connector (B).
    3. Check continuity between TCM connector (A) terminals and CVT unit harness connector (B) terminals.
      CONNECTOR TERMINAL CONTINUITY CHART

      Item Connector Terminal Continuity
      TCM F23 13 Yes
      CVT unit harness connector F46 17
      TCM F23 25 Yes
      CVT unit harness connector F46 19
      Fig 2: Checking Continuity Between TCM Connector Terminals And CVT Unit Harness Connector Terminals
      G04927033Courtesy of NISSAN MOTOR CO., U.S.A.
    4. If OK, check harness for short to ground and short to power.
    5. Reinstall any part removed.

    OK or NG 

    OK: GO TO 5.

    NG: Repair or replace damaged parts.

  5. CHECK DTC

    Perform "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO 6.

  6. CHECK TCM
    1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUE ".
    2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    OK: INSPECTION END 

    NG: Repair or replace damaged parts.

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