2003 Infiniti Q45FACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

  1. CHECK DTC 

    With CONSULT-II 

    1. Turn ignition switch to "ON" position and select "SELF DIAGNOSIS" mode for "A/T" with CONSULT-II.
    2. Move selector lever to "R" position.
    3. Depress accelerator pedal (Full throttle position).
    4. Touch "ERASE".
    5. Turn ignition switch to "OFF" position and wait at least 10 seconds.
    6. Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".
      Fig 1: SELF DIAGNOSIS Mode Display For A/T With CONSULT-II (DTC P1704)
      G02040539Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the "TCM.EEPROM" displayed again? 

    1. Yes >> Replace TCM.
    2. No >> INSPECTION END 
Chapter Navigation
Return to Chapter: DTC P1704: Transmission Control Module (EEPROM)
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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.