What term is recommended for a firmer torque converter clutch apply?

• A. TCC Lockup
• B. Torque Converter Calibration
• C. TCC Modulation
• D. Clutch Ramp

Answer: (C)

To achieve a firmer torque converter clutch apply, you adjust how the clutch pressure is commanded during lockup. This control is called TCC modulation—the schedule that determines how quickly and how much pressure is applied as conditions change. Increasing the modulation makes the pressure rise more decisively, reducing slip and delivering a firmer feel in lockup. The term TCC lockup describes the engaged state itself, not how you influence its firmness; calibration is the broader process of tuning the TCC system, and a clutch ramp is more about the shape of the pressure increase rather than the overall modulation strategy. So the best term for a firmer TCC apply is TCC Modulation.