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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 785 (Automatic Transmission) >> Trouble Diagnosis For Symptoms >> 9. A/T Does Not Shift: D1 --> D2 or Does Not Kickdown: D4 --> D2

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

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM: 

A/T does not shift from D 1  to D 2  at the specified speed. 

A/T does not shift from D 4  to D 2  when depressing accelerator pedal fully at the specified speed. 

  1. CHECK SYMPTOM 

    Are "7. Vehicle Does Not Creep Forward In D, 3, 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, 3, 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?

    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.
    Fig 1: Checking Self-Diagnostic Results Without Consult II
    G02160961Courtesy of NISSAN MOTOR CO., U.S.A.
  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 P0122 OR DTC P0123: THROTTLE POSITION SENSOR " and "DTC P2122 OR DTC P2123: APP SENSOR ".

    OK or NG 

    1. OK: GO TO 5.
    2. NG: Repair or replace throttle position sensor [accelerator pedal position (APP) sensor].
    Fig 2: Identifying Throttle Position Sensor [Accelerator Pedal Position (APP) Sensor]
    G02160962Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK A/T FLUID CONDITION 
    1. Remove oil pan.
    2. Check A/T fluid condition.

    OK or NG 

    1. OK: GO TO  7.
    2. NG: GO TO 6.
    Fig 3: Checking A/T Fluid Condition
    G02160963Courtesy of NISSAN MOTOR CO., U.S.A.
  6. DETECT MALFUNCTIONING ITEM 
    1. Remove control valve. Refer to "CONTROL VALVE ASSEMBLY AND ACCUMULATORS ".
    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 "CONTROL VALVE ASSEMBLY AND ACCUMULATORS ".
    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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