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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 61 (Automatic Transmission -- G37 Coupe) >> DTC/Circuit Diagnosis >> DTC P1734: 7GR Incorrect Ratio >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different variant/trim than selected.
CAUTION:
  • "DIAGNOSIS PROCEDURE " must be performed before starting "DTC CONFIRMATION PROCEDURE".
  • Never perform "DTC CONFIRMATION PROCEDURE" before completing the repair, which may cause secondary malfunction.
  • Always drive vehicle at a safe speed.
  1. PRECONDITIONING

    If "DTC CONFIRMATION PROCEDURE" is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

    Go to 2.

  2. CHECK ATF TEMPERATURE

    With CONSULT-III 

    1. Start the engine.
    2. Select "ATF TEMP 1" in "Data Monitor" in "TRANSMISSION".
    3. Check ATF temperature is in the following range.

      ATF TEMP 1 : 20°C (68°F) - 140°C (284°F)

    With GST 

    1. Start the engine.
    2. Drive vehicle for approximately 5 minutes in urban areas.

      Is ATF temperature within specified range? 

      YES: Go to 3.

      NO: Drive vehicle to warm ATF or stop engine to cool ATF.

  3. CHECK SYMPTOM (PART 1)

    With CONSULT-III 

    1. Select "7TH GR FNCTN P1734" in "DTC & SRT confirmation" in "TRANSMISSION".
    2. Drive vehicle with manual mode and maintain the following conditions.

      GEAR : 7

      ACCELE POSI : 0.7/8 or more

      VEHICLE SPEED : 10 km/h (7 MPH) or more

    3. Keep the current driving status for 2 seconds or more if CONSULT-III screen changes from "OUT OF CONDITION" to "TESTING".
      CAUTION: When "TESTING" is not indicated on CONSULT-III for a long time, check "Self Diagnostic Results" in "TRANSMISSION". When a DTC other than "P1734" is detected, check the DTC. Refer to "DTC INDEX ".

    With GST 

    1. Drive vehicle and maintain the following conditions for 2 seconds or more.

      Selector lever : "M" position

      Gear position : 7th

      Accelerator pedal opening : 0.7/8 or more

      Vehicle speed : 10 km/h (7 MPH) or more

    2. Check DTC.

      Is "OUT OF CONDITION", "STOP VEHICLE" or "COMPLETED RESULT NG" displayed?/Is "P1734" detected? 

      YES-1: "OUT OF CONDITION": Perform "Step 3" again.

      YES-2: "STOP VEHICLE": Go to 4.

      YES-3: "COMPLETED RESULT NG": Go to "DIAGNOSIS PROCEDURE ".

      YES-4: "P1734" is detected: Go to "DIAGNOSIS PROCEDURE ".

      NO: Go to 4.

  4. CHECK SYMPTOM (PART 2)

    With CONSULT-III 

    1. Stop vehicle.
    2. Drive vehicle in "D" position allowing it to shift from 1GR to 7GR and check shift timing and shift shock.

      INSPECTION END