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HOMESERVICE MANUALSINFINITI2006FX35 AWDREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSMISSIONDTC P1730: A/T INTERLOCKDIAGNOSTIC PROCEDURE
2006 Infiniti FX35 AWD

Diagnostic Procedure

2006 Infiniti FX35 AWDSECTION Diagnostic Procedure
  1. SELF-DIAGNOSIS 

    With CONSULT-II 

    1. Drive vehicle.
    2. Stop vehicle and turn ignition switch OFF.
    3. Turn ignition switch ON. (Do not start engine.)
    4. Select "SELF-DIAG RESULTS" mode for "A/T" with CONSULT-II.
      Fig 1: Consult-II SELECT DIAG MODE Display Screen
      G04083861Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Drive vehicle.
    2. Stop vehicle and turn ignition switch OFF.
    3. Turn ignition switch ON. (Do not start engine.)
    4. Perform self-diagnosis. Refer to "TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS) ".

    OK or NG 

    OK : GO TO 2.

    NG : Check low coast brake solenoid valve circuit and function. Refer to "DTC P1772 LOW COAST BRAKE SOLENOID VALVE ", "DTC P1774 LOW COAST BRAKE SOLENOID VALVE FUNCTION ".

  2. CHECK DTC 

    Perform "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK : INSPECTION END 

    NG : GO TO 3.

  3. 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 4.

    NG : Repair or replace damaged parts.

  4. 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.

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.