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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1517 (Automatic Transmission (Re4F04W)) >> DTC P0710: A/T Fluid Temperature Sensor Circuit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECTION START 

    Do you have CONSULT-II?

    Yes or No

    • Yes: GO TO 2.
    • No: GO TO  6.
  2. CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITH CONSULT-II) 

    With CONSULT-II 

    1. Start engine.
    2. Select "DATA MONITOR" mode for "A/T" with CONSULT-II.
      Fig 1: Consult-II - (DATA MONITOR) Display
      G02447343Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Read out the value of "FLUID TEMP SE".
      • Voltage: Cold [20°C (68°F)] --> Hot [80°C (176°F)] 
      • : Approximately 1.5V --> 0.5V 

    OK or NG

    • OK: GO TO  7.
    • NG: GO TO 3.
  3. CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY 
    1. Turn ignition switch to OFF position.
    2. Disconnect terminal cord assembly connector in engine compartment.
    3. Check resistance between terminal cord F30 terminals 6 and 7 when A/T is cold.
      Fig 2: Checking Resistance Between Terminal Cord F30 Terminals 6 & 7 When A/T Is Cold
      G02447344Courtesy of NISSAN MOTOR CO., U.S.A.
      TEMPERATURE RESISTANCE SPECIFICATION TABLE

      Temperature Resistance (Approx.)
      Cold [20°C (68°F)] 2.5kΩ
    4. Reinstall any part removed.

    OK or NG

    • OK: GO TO 4.
    • NG: GO TO  5.
  4. DETECT MALFUNCTIONING ITEM 

    Check the following items:

    • Harness for short to ground or short to power or open between TCM, ECM and terminal cord assembly
    • Ground circuit for ECM

      Refer to "POWER SUPPLY AND GROUND CIRCUIT ".

    OK or NG

    • OK: GO TO  7.
    • NG: Repair or replace damaged parts.
  5. DETECT MALFUNCTIONING ITEM 
    1. Remove oil pan. Refer to "CONTROL VALVE ASSEMBLY AND ACCUMULATORS ".
    2. Check the following items:
      • A/T fluid temperature sensor
        • Check resistance between two terminals while changing temperature as shown at below.
          Fig 3: Checking Temperature With Thermometer Tool
          G02447345Courtesy of NISSAN MOTOR CO., U.S.A.
          TEMPERATURE RESISTANCE SPECIFICATION TABLE

          Temperature °C (°F) Resistance (Approx.)
          20 (68) 2.5kΩ
          80 (176) 0.3kΩ
      • Harness of terminal cord assembly for short or open

    OK or NG

    • OK: GO TO  7.
    • NG: Repair or replace damaged parts.
  6. CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITHOUT CONSULT-II) 

    Without CONSULT-II 

    1. Start engine.
    2. Check voltage between TCM harness connector E143 terminal 47 (G) and ground while warming up A/T.
      Fig 4: Checking Input Signal Of A/T Fluid Temperature Sensor Harness Connector Terminal 47
      G02447346Courtesy of NISSAN MOTOR CO., U.S.A.
      TEMPERATURE RESISTANCE SPECIFICATION TABLE

      Temperature Voltage (Approx.)
      Cold [20°C (68°F)] --> Hot [80°C (176°F)] 1.5V --> 0.5V

    OK or NG

    • OK: GO TO 7.
    • NG: GO TO  3.
  7. CHECK DTC 

    Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE ".

    OK or NG

    • OK: INSPECTION END 
    • NG: GO TO 8.
  8. CHECK TCM INSPECTION 
    1. Perform TCM input/output signal inspection. Refer to "TCM TERMINALS AND REFERENCE VALUE ".
    2. If NG, recheck 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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