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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSMISSIONDTC P1731: A/T 1ST ENGINE BRAKINGDIAGNOSTIC PROCEDURE
2006 Infiniti FX35 AWD

Diagnostic Procedure

2006 Infiniti FX35 AWDSECTION Diagnostic Procedure
  1. CHECK INPUT SIGNALS 

    With CONSULT-II 

    1. Start the engine.
    2. Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
    3. Drive vehicle in the "M" position (1st gear), and confirm the ON/ OFF actuation of "ATF PRES SW 2" and "ON OFF SOL".
      ATF PRES SW 2 AND ON OFF SOL REFERENCE CHART

      Item name Condition Display value
      ON OFF SOL Low coast brake engaged. Refer to CLUTCH AND BAND CHART  . ON
      Low coast brake disengaged. Refer to CLUTCH AND BAND CHART  . OFF
      ATF PRES SW 2 Low coast brake engaged. Refer to CLUTCH AND BAND CHART  . ON
      Low coast brake disengaged. Refer to CLUTCH AND BAND CHART  . OFF
      Fig 1: CONSULT-II Diagnosis Function Display - Data Monitor
      G04075514Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : GO TO  4.

    NG : GO TO 2.

  2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT 

    Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".

    OK or NG 

    OK : GO TO 3.

    NG : Repair or replace damaged parts.

  3. DETECT MALFUNCTIONING ITEM 

    Check the following.

    • A/T assembly harness connector pin terminals for damage or loose connection with harness connector.

    OK or NG 

    OK : Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".

    NG : Repair or replace damaged parts.

  4. CHECK DTC 

    Perform "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK : INSPECTION END 

    NG : GO TO  2.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.