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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1638 (Automatic Transmission) >> A/T Control System >> Lock-Up Control >> Notes
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Lock-Up Control: Notes

WARNING: This page is about a different car, the 2006 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to increase power transmission efficiency.

The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid valve, which is controlled by a signal from TCM, and the torque converter clutch control valve engages or releases the torque converter clutch piston.

Lock-up Operation Condition Table 

LOCK-UP OPERATION CONDITION

Select lever D position M5 position M4 or 4 position M3 or 3 position M2 or 2 position
Gear position 5 4 5 4 3 2
Lock-up x - x x x x
Slip lock-up x x - - - -