Do you have access to Mitchell1 Prodemand, or eautorepair.net DIY? If you are willing to share user/password (we can pay), please get in contact with us ASAP (truly, it is urgent): email operation-charm [[at]] tuta.io or click to submit anonymously
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 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
Also check for:
- Check for a stored DTC, and check for loose connections.
- Test the solenoid valve function with the HDS.
- Inspect the A/T clutch pressure control solenoid valve body gasket, the ATF feed pipes, and the O-rings for wear and damage.
- Inspect shift solenoid valve D for seizure, and the O-rings for wear and damage.
- Replace the torque converter assembly.
- Check the torque converter check valve in the regulator valve body.
- Check the lock-up shift valve in the regulator valve body.
- Check the lock-up control valve in the main valve body.