No Torque Converter Clutch Apply

1. TCC system:

a. Stuck off.

b. O-ring failure.

c. No voltage to solenoid.

d. Poor electrical connection.

2. Brake switch:

a. Contact corroded.

b. Poor electrical connection.

c. Pinched wire.

d. Misadjusted.

e. No supply voltage.

3. Solenoid malfunctioning.

4. Quad driver module failure.

5. TCC valve stuck due to debris or undersized bore.

6. Retainer pin broken.

7. Ballooning torque converter.

8. Turbine shaft plugged oil holes.

9. Turbine shaft seals or pump body bushings worn out.

10. Oil transfer hole cup plug leaking.

11. Regulated apply valve stuck.

12. TCC valve release exhaust orificed cup plug blocked.