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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle Re4F04B >> DTC P0710 A/T Fluid Temperature Sensor Circuit >> Diagnostic Procedure
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Diagnostic Procedure

  1. INSPECTION START

    Do you have CONSULT-II?

    Yes or No 

    1. Yes: GO TO 2.
    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 TCM INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.
    3. Read out the value of FLUID TEMP SE.
      Fig 1: Checking Automatic Transaxle Fluid Temperature Sensor Input Signal (With CONSULT-II)
      G02016663Courtesy of NISSAN MOTOR CO., U.S.A.
      1. Voltage: Cold [20°C (68°F)]-->Hot [80°C (176°F)] 
        1. : Approximately 1.5V-->0.5V 

    OK or NG 

    1. OK: GO TO  7.
    2. 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 assembly F30 terminals 6 and 7 (component side) when A/T is cold.
      Fig 2: Checking Automatic Transaxle Fluid Temperature Sensor With Terminal Cord Assembly
      G02016664Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Reinstall any part removed.

    OK or NG 

    1. OK: GO TO 4.
    2. 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 (Main harness)
    • Ground circuit for ECM

      Refer to TROUBLE DIAGNOSIS FOR POWER SUPPLY .

    OK or NG 

    1. OK: GO TO  7.
    2. NG: Repair or replace damaged parts.
  5. DETECT MALFUNCTIONING ITEM
    1. Remove oil pan.
    2. Check the following items:
      • A/T fluid temperature sensor

        Check resistance between two terminals while changing temperature as shown in figure.

        Fig 3: Temperature And Terminals Resistance Specifications
        G02016665Courtesy of NISSAN MOTOR CO., U.S.A.
        Fig 4: Checking Resistance Between Fluid Temperature Sensor Terminals
        G02016666Courtesy of NISSAN MOTOR CO., U.S.A.
      • Harness of terminal cord assembly for short or open

    OK or NG 

    1. OK: GO TO  7.
    2. 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 connector F57 terminal 47 (BR) and ground while warming up A/T.
      Fig 5: Checking A/T Fluid Temperature Sensor Input Signal (Without CONSULT-II)
      G02016667Courtesy of NISSAN MOTOR CO., U.S.A.
      1. Voltage: Cold [20°C (68°F)]-->Hot [80°C (176°F)] 
        1. : Approximately 1.5V-->0.5V 

    OK or NG 

    1. OK: GO TO 7.
    2. NG: GO TO  3.
  7. CHECK DTC

    Perform DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE .

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: GO TO 8.
  8. CHECK TCM INSPECTION
    1. Perform TCM input/output signal inspection.
    2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: Repair or replace damaged parts.
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