Torque Converter Clutch: Testing and Inspection

DIAGNOSIS
The diagnosis of the Torque Converter Clutch (TCC) system is covered in Chart C-8A Torque Converter Clutch (TCC) Relay System Check. Testing and Inspection

ADDITIONAL CHECKS
If the Engine Control Module (ECM) doesn't switch the TCC "ON" during driving, sensors such as Engine Coolant Temperature, Vehicle Speed Sensor and Throttle Position should also be checked.