Accepted Answer

ok, you must likely have a torque converter clutch switch burnt out and not releasing the torque converter lock up you would have to replace the solenoid, here is some information about the problem you are having.and will have to go to a transmission place or dealer to diagnose, and repair.the cost on that would depend on the repair needed , if is a solenoid only then it will pay 1.5 hours labor

Notes

DTC P0741 TORQUE CONVERTER CLUTCH CIRCUIT - STUCK OFF COMPONENT LOCATION View Full Image GENERAL DESCRIPTION The TCM (PCM) controls the locking and unlocking of the Torque Converter Clutch (or Damper Clutch), to the input shaft of the transmission, by applying hydraulic pressure. The main purpose of T/C clutch control is to save fuel by decreasing the hydraulic load inside the T/C. The TCM (PCM) outputs duty pulses to control the Damper Clutch Control Solenoid Valve (DCCSV) and hydraulic pressure is applied to the DC according to the DCC duty ratio value. When the duty ratio is high, high pressure is applied and the Damper Clutch is locked. The normal operating range of the Damper Clutch Control duty ratio value is from 30% (unlocked) to 85% (locked). DTC DESCRIPTION The TCM (PCM) increases the duty ratio to engage the Damper Clutch by monitoring slip rpms (difference value between engine speed and turbine speed). To decrease the slip of the Damper Clutch, the TCM (PCM) increases the duty ratio by applying more hydraulic pressure. When slip rpm does not drop under specification with 100% duty ratio, the TCM (PCM) determines that the Torque Converter Clutch is stuck OFF and sets this code. DTC DETECTING CONDITION DTC DETECTING CONDITION View Full Image SCHEMATIC DIAGRAM SCHEMATIC DIAGRAM View Full Image MONITOR SCAN TOOL DATA Connect SCAN TOOL to data link connector (DLC). Engine ON. Select D RANGE and drive vehicle. Monitor the TORQUE CONVERTER (DAMPER) CLUTCH parameter on the SCAN TOOL. Specification: TCC SLIP < 160 RPM (In condition that TCC SOL > DUTY > 80%) Specification View Full Image Are TCC SOLENOID DUTY and TCC SLIP within specifications? YES > Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to Verification of Vehicle Repair procedure. NO > Go to Component Inspection procedure. COMPONENT INSPECTION CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE Connect SCAN TOOL to data link connector (DLC). Ignition ON & Engine OFF. Select A/T Solenoid valve Actuator test and Operate Actuator test. Can you hear operating tone for using TCC SOLENOID VALVE Actuator Testing Function? YES > Go to CHECK OIL PRESSURE. NO > Replace TCC SOLENOID VALVE as necessary and Go to Verification of Vehicle Repair procedure. CHECK OIL PRESSURE View Full Image Connect oil pressure gauge to DX port. Ignition ON & Engine OFF. After connecting scan tool and monitor the TCC SOLENOID VALVE DUTY parameter on the scan tool data list. Select 1st gear and accelerate engine speed to 2500 rpm. Measure oil pressure. Specification: approximately 7.5 kg/cm2 Is oil pressure value within specification? YES > Repair TORQUE CONVERTER CLUTCH (REPLACE Torque Converter) as necessary and go to Verification of Vehicle Repair procedure. NO > Replace A/T ass'y (possible to BODY CONTROL VALVE faulty) as necessary and go to Verification of Vehicle Repair procedure. VERIFICATION OF VEHICLE REPAIR After a repair, it is essential to verify that the fault has been corrected. Connect SCAN TOOL and select Diagnostic Trouble Codes (DTCs) mode. Using a SCAN TOOL, Clear DTC. Operate the vehicle within DTC Enable conditions in General information. Are any DTCs present? YES > Go to the applicable troubleshooting procedure. NO > System performing to specification at this time.

 

 

Expert:	transman
Pos. Feedback:	100.0 %
Accepts:
Answered:	11/5/2009

automotive instructor

28 years exp,complete autmotive diagnostics and repair