P0741

Schematic:

The Torque Converter Clutch Solenoid Valve (TCC So. Valve) is a pulse width modulated solenoid. When vehicle operating conditions are met for TCC application, the PCM/TCM begins the duty cycle at approximately 42%. The PCM/TCM then increases the duty cycle up to 90% in order to achieve full TCC apply. When the TCC Sol. valve is de-energized, the solenoid blocks filtered 2-3 drive fluid, and allows TCC signal fluid to exhaust. When energized, the solenoid modulates fluid into the TCC signal fluid circuit. When fully energized, modulation stops, and the solenoid blocks both 2-3 drive fluid and TCC signal fluid exhaust When the PCM/TCM detects a high TCC slip speed with the TCC commanded ON, then DTC P0741 sets. DTC P0741 is a type B DTC.

DTC PARAMETERS
^ Engine is running
^ TPS greater than 8%
^ Trans fluid temperature between 21°C (70°F) and 130°C (266°F).
^ Engine torque greater than 10 ft-lbs
^ Commanded gear greater than 1st
^ No TPS, TFP, VSS, ISS codes
^ No TCC stuck ON code
^ No TCC electrical code
^ No TCC release switch code
^ No engine torque default
^ Time since last manual range change greater than 6 seconds

DIAGNOSTIC AIDS
Inspect and repair as necessary:
^ TCC Sol. valve O-ring for leaks or cut.
^ TCC Sol. valve filter plugged.
^ TCC control valve stuck in the released position.
^ TCC regulated apply valve stuck in the released position.
^ TCC feed limit valve stuck.
^ Pressure regulator valve stuck.
^ TCC fluid circuit leaks.
^ Turbine shaft seals for leaks or cut.
^ Torque converter for ballooning.