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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Automatic Transaxle - Re4F04B) >> Trouble Diagnosis For Symptoms >> A/T Does Not Perform Lock-Up >> 3. Detect Malfunctioning Item

3. Detect Malfunctioning Item

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove control valve. Refer to "CONTROL VALVE ASSEMBLY AND ACCUMULATORS ".
  2. Check following items:
    • Torque converter clutch control valve
    • Torque converter relief valve
    • Pilot valve
    • Pilot filter
  3. Disassemble A/T.
  4. Check the following items:
    • Torque converter

OK or NG 

  1. OK : GO TO 4.
  2. NG : Repair or replace damaged parts.