Transmission Code

P0740 - TORQUE CONVERTER CLUTCH CONTROL CIRCUIT

When Monitored and Set Condition:
P0740 - TORQUE CONVERTER CLUTCH CONTROL CIRCUIT

When Monitored: During Electronically Modulated Converter Clutch (EMCC) Operation.

Set Condition:
A Transmission must be in EMCC, with input speed > than 1760 RPM. TCC/L-R sol achieves the maximum duty cycle & can't pull engine RPM within 60 RPM of input speed.
B Transmissions is in FEMCC & engine slips TCC > than 100 RPM for 10 seconds.

Possible Causes:
RELATED DTC'S PRESENT
INTERMITTENT OPERATION
INCORRECT FLUID LEVEL
INTERNAL TRANSMISSION PROBLEM - TCC OUT OF RANGE