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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1979 (Automatic Transmission (Re5F22A)) >> Trouble Diagnosis For Symptoms >> A/T Does Not Shift: 3rd gear --> 2nd gear, When Lever Switch "OFF" --> "ON" >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK A/T FLUID LEVEL 

    Check the A/T fluid level. Refer to A/T FLUID CHECK .

    OK or NG

    • OK : GO TO 2.
    • NG : Refill ATF.
  2. CHECK SELF-DIAGNOSTIC RESULTS 

    Perform self-diagnosis.

    Is any malfunction detected by self-diagnostic?

    • YES : Check the malfunctioning system.
    • NO : GO TO 3.
  3. DETECT MALFUNCTIONING ITEM 
    1. Control valve assembly. Refer to CONTROL VALVE ASSEMBLY .
    2. Disassemble A/T. Refer to DISASSEMBLY .
    3. Check the following items:

    OK or NG

    • OK : GO TO 4.
    • NG : Repair or replace damaged parts.
  4. CHECK TCM 
    1. Check TCM input/output signal. Refer to TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES .
    2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

    OK or NG

    • OK : GO TO 5.
    • NG : Repair or replace damaged parts.
  5. CHECK SYMPTOM 

    Check again.

    OK or NG

    • OK : INSPECTION END 
    • NG : Repair or replace damaged parts.
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