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Home >> Infiniti >> 2003 >> I35 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> Diagnostic Trouble Code Definitions >> DTC P0744: A/T TCC S/V Function (Lock-Up) >> Diagnostic Trouble Code (DTC) Confirmation Procedure >> With CONSULT-II

With CONSULT-II

  1. Start engine and select "DATA MONITOR" mode for "A/T" with CONSULT-II.
    Fig 1: Display Select Diag Mode Sheet With Consult-II
    G02090692Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Make sure that output voltage of A/T fluid temperature sensor is within the range below.

    FLUID TEMP SEN: 0.4 - 1.5V 

    If out of range, drive vehicle to decrease voltage (warm up the fluid) or stop engine to increase voltage (cool down the fluid).

  3. Select "TCC S/V FNCTN P0744" of "DTC WORK SUPPORT" mode for "A/T" with CONSULT-II and touch "START".
  4. Accelerate vehicle to more than 80 km/h (50 MPH) and maintain the following condition continuously until "TESTING" has turned to "COMPLETE". (It will take approximately 30 seconds after "TESTING" shows.)
    Fig 2: Identifying A/T Fluid Temperature Graph
    G02090693Courtesy of NISSAN MOTOR CO., U.S.A.

    THROTTLE POSI: 1.0/8 - 2.0/8 (at all times during step 4) 

    Selector lever: D position 

    TCC S/V DUTY: More than 94% 

    VHCL/S SE A/T: Constant speed of more than 80 km/h (50 MPH) 

    • Check that "GEAR" shows "4". 
    • For shift schedule, refer to SDS,  SHIFT SCHEDULE  . 
    • If "TESTING" does not appear on CONSULT-II for a long time, select "SELF- DIAG RESULTS". In case a 1st trip DTC other than P0744 is shown, refer to applicable "TROUBLE DIAGNOSIS FOR DTC". 
  5. If "NG" is displayed, refer to DIAGNOSTIC PROCEDURE . If "OK" is displayed, refer to SHIFT SCHEDULE .