Torque Converter Clutch Does Not Operate Smoothly; Torque Converter Clutch Does Not Engage or Disengage

Torque converter clutch does not operate smoothly; torque converter clutch does not engage or disengage

Shift solenoid valve D defective

A/T clutch pressure control solenoid valve C defective

Torque converter clutch piston defective

Torque converter check valve defective

Lock-up shift valve defective

Lock-up control valve defective

Lock-up timing valve defective

Foreign material in separator plate orifice

Notes

Test the shift solenoid valve with the HDS Shift Solenoid Valve Test, Replacement, and Shift Solenoid Wire Harness Replacement.

Notes

Check for a seized shift solenoid valve, and inspect the O-rings.

Notes

Test A/T clutch pressure control solenoid valve C with the HDS A/T Clutch Pressure Control Solenoid Valve C Test.

Notes

Inspect the A/T clutch pressure control solenoid valve C body gasket, the ATF feed pipes, and the O-rings for wear and damage.

Notes

Check the torque converter check valve, the lock-up shift valve, and the lock-up timing valve in the main valve body for free movement, and check the valve springs for wear and damage.

Notes

Check the lock-up control valve in the regulator valve body for free movement, and check the valve spring for wear and damage.

Notes

Replace the torque converter.

Notes

Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.