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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 >> 9. A/T Does Not Shift: D1 --> D2 or Does Not Kickdown: D4 --> D2 >> Symptom:

Symptom:

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A/T does not shift from D1 to D2 at the specified speed. 

A/T does not shift from D4 to D2 when depressing accelerator pedal fully at the specified speed. 

  1. CHECK SYMPTOM 

    Are 7. Vehicle Does Not Creep Forward In D, 2 Or 1 Position and 8. Vehicle Cannot Be Started From D1 OK?

    Yes or No 

    1. Yes: GO TO 2.
    2. No: Go to 7. VEHICLE DOES NOT CREEP FORWARD IN D, 2 OR 1 POSITION  and 8. VEHICLE CANNOT BE STARTED FROM D1 .
  2. CHECK SELF-DIAGNOSTIC RESULTS 

    With CONSULT-II 

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

    Without CONSULT-II 

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

    Fig 1: Checking Self-Diagnostic Results
    G02016872Courtesy of NISSAN MOTOR CO., U.S.A.

    Yes or No 

    1. Yes: Check park/neutral position (PNP) switch circuit. Refer to DTC P0705 PARK/NEUTRAL POSITION SWITCH .
    2. No: GO TO 3.
  3. CHECK VEHICLE SPEED SENSOR.A/T AND VEHICLE SPEED SENSOR.MTR CIRCUIT 

    Check vehicle speed SENSOR.A/T (revolution sensor) and vehicle speed SENSOR.MTR circuit. Refer to DTC P0720 VEHICLE SPEED SENSOR.A/T (REVOLUTION SENSOR)  and DTC VEHICLE SPEED SENSOR MTR .

    OK or NG 

    1. OK: GO TO 4.
    2. NG: Repair or replace vehicle speed SENSOR.A/T (revolution sensor) and vehicle speed SENSOR.MTR circuits.
  4. CHECK THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR] 

    Check throttle position sensor [accelerator pedal position (APP) sensor]. Refer to DTC P0221 TP SENSOR and DTC P0226 APP SENSOR .

    Fig 2: Locating Throttle Position Sensor Components
    G02016873Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair or replace throttle position sensor [accelerator pedal position (APP) sensor].
  5. CHECK A/T FLUID CONDITION 
    1. Remove oil pan.
    2. Check A/T fluid condition.
      Fig 3: Checking Automatic Transaxle Fluid Condition
      G02016874Courtesy 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. Remove control valve. Refer to REMOVAL .
    2. Check the following items:
      • Shift valve A
      • Shift solenoid valve A
      • Pilot valve
      • Pilot filter
    3. Disassemble A/T.
    4. Check the following items:
      • Servo piston assembly
      • Brake band
      • Oil pump assembly

    OK or NG 

    1. OK: GO TO  8.
    2. NG: Repair or replace damaged parts.
  7. DETECT MALFUNCTIONING ITEM 
    1. Remove control valve. Refer to REMOVAL .
    2. Check the following items:
      • Shift valve A
      • Shift solenoid valve A
      • Pilot valve
      • Pilot filter

    OK or NG 

    1. OK: GO TO 8.
    2. NG: Repair or replace damaged parts.
  8. CHECK SYMPTOM 

    Check again.

    OK or NG 

    1. OK: INSPECTION END 
    2. NG: GO TO 9.
  9. 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.
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