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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 778 (Automatic Transaxle Re4F04B) >> Trouble Diagnosis For Symptoms >> 4. In N Position, Vehicle Moves >> Symptom:

Symptom:

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle moves forward or backward when selecting N position. 

  1. CHECK PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT

    With CONSULT-II 

    Does TCM INPUT SIGNALS in DATA MONITOR show damage to park/neutral position (PNP) switch circuit?

    Fig 1: Checking Park/Neutral Position Switch Circuit
    G02016853Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    Does self-diagnosis show damage to park/neutral position (PNP) switch circuit?

    Yes or No 

    1. Yes: Check park/neutral position (PNP) switch circuit. Refer to DTC P0705 PARK/NEUTRAL POSITION SWITCH .
    2. No: GO TO 2.
  2. CHECK CONTROL LINKAGE 

    Check control cable.

    OK or NG 

    1. OK: GO TO  4.
    2. NG: GO TO 3.
  3. ADJUST CONTROL CABLE 

    Adjust control cable.

    : Refer to CONTROL CABLE ADJUSTMENT .

    Fig 2: Locating Control Cable
    G02016854Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK A/T FLUID LEVEL 

    Check A/T fluid level.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Refill ATF.
  5. CHECK A/T FLUID CONDITION 
    1. Remove oil pan.
    2. Check A/T fluid condition.
      Fig 3: Checking Automatic Transaxle Fluid Condition
      G02016856Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO  7.
    2. NG: GO TO 6.
  6. DETECT MALFUNCTIONING ITEM 
    1. Disassemble A/T.
    2. Check the following items:
    • Forward clutch assembly
    • Overrun clutch assembly
    • Reverse clutch assembly

    OK or NG 

    1. OK: GO TO 7.
    2. NG: Repair or replace damaged parts.
  7. CHECK SYMPTOM 

    Check again.

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: GO TO 8.
  8. CHECK TCM INSPECTION 
    1. Perform TCM input/output signal inspection.
    2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: Repair or replace damaged parts.