Torque Converter Clutch Does Not Operate Smoothly

Torque converter clutch does not operate smoothly

Diagnostic Procedure:

1. Shift solenoid valve D defective

2. A/T clutch pressure control solenoid valve C 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

7. Lock-up timing valve defective

Also check for:

- Check for a stored DTC, and check for loose connectors.
- Inspect the O-rings, and check for a seized shift solenoid valve.
- Inspect the A/T clutch pressure control solenoid valve C body gasket for wear and damage. If the A/T clutch pressure control solenoid valve C is stuck, inspect the CPC valves.
- Center all engine mounts.
- Replace the torque converter.