DTC P0741: Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve SL) [12/2012 - ]: Description

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The ECM uses signals from the throttle position sensor, air flow meter, turbine (input) speed sensor, intermediate (counter gear) speed sensor and crankshaft position sensor to help determine the engagement timing of the lock-up clutch. The ECM monitors the engagement of the clutch using the turbine (input) speed sensor, intermediate (counter gear) speed sensor and crankshaft position sensor.

Then the ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical problems of the shift solenoid valve (SL), valve body and torque converter.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0741	Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve SL)	Lock-up does not occur when requested (2-trip detection logic).	Shift solenoid valve SL remains closed Transmission valve body assembly is blocked Torque converter assembly Automatic transaxle assembly (clutch, brake or gear etc.) Line pressure is too low	Comes on	DTC stored