P0741

DTC P0741 No.29: TCC Solenoid Performance or Stuck OFF





Wiring Diagram

Circuit Description
TCM (5) monitors operation (engagement condition) of Torque Converter Clutch (TCC) in response to ON/OFF command to the TCC solenoid (3) by using engine speed signal and input shaft speed sensor (forward clutch cylinder revolution speed sensor) signal.





DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

WARNING:
^ When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
^ Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1. Turn ignition switch OFF.
2. Clear DTC stored in TCM and ECM.
3. Start engine and warm it up to normal operating temperature.
4. Turn O/D cut switch ON. ("O/D OFF" lamp lights)
5. Shift select lever to "D" range and keep it for 20 seconds or longer.
6. Run vehicle for more than 10 seconds with 3rd gear in "D" range, more than 10% throttle opening and at vehicle speed of 15 mph - 30 mph, 25 km/h - 45 km/h.
7. Turn O/D cut switch OFF. ("O/D OFF" lamp comes OFF.)
8. Run vehicle with 4th gear in "D" range (with less than 40% throttle opening and at vehicle speed of 60 mph, 100 km/h, or more for about 10 seconds.
9. Stop vehicle and turn ignition switch OFF.
10. Repeat above Steps 3 to 8.
11. Stop vehicle and check DTC and pending DTC.





DTC Troubleshooting