P0740

SYMPTOM
P0740 - TORQUE CONVERTER CLUTCH CONTROL CIRCUIT

WHEN MONITORED
During Electronically Modulated Converter Clutch (EMCC) Operation.

SET CONDITION
Transmission must be in EMCC, with input speed greater than 1750 RPM. TCC - L/R Solenoid achieves the maximum duty cycle and can not pull engine speed within 60 RPM of input speed. Also when the transmission is in FEMCC and the engine slips TCC greater than 100 RPM for 10 seconds. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES
- RELATED DTC P0750 PRESENT
- INTERMITTENT WIRING AND/OR CONNECTORS
- INTERNAL TRANSMISSION PROBLEM - TCC OUT OF RANGE
- L/R SOLENOID INOPERATIVE