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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1585 (68RFE Automatic Transmission - (Service Information) - 2500 Hd) >> Torque Converter >> Operation >> Torque Converter Clutch (TCC) >> Notes

Torque Converter Clutch (TCC): Notes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

In a standard torque converter, the impeller and turbine are rotating at about the same speed and the stator is freewheeling, providing no torque multiplication. By applying the turbine's piston and friction material to the front cover, a total converter engagement can be obtained. The result of this engagement is a direct 1:1 mechanical link between the engine and the transmission.

The clutch can be engaged in all gear ranges except first depending on the Tow/Haul and ERS status. In normal operation, the clutch will engage after the shift to fourth gear. If the Tow/Haul mode is enabled, the clutch will engage after the shift to third (direct) gear.

The TCM controls the torque converter clutch via the L/R-CC Solenoid. There are four TCC operational modes:

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