Torque converter clutch does not operate smoothly
Probable Cause(s)
  1. Shift solenoid valve E defective
  2. A/T clutch pressure control solenoid valve A defective
  3. Torque converter clutch piston defective
  4. Torque converter check valve defective
  5. Lock-up shift valve defective
  6. Lock-up control valve defective
Notes
  • Check for a stored DTC, and check for loose connectors.
  • Inspect the solenoid valve filter/gasket and the O-rings for wear and damage, and inspect the solenoid valves for seizure.
  • Replace the torque converter.