P0741

DTC P0741: Torque Converter Clutch System Malfunction (Stuck OFF)

DESCRIPTIONS OF MONITOR METHODS
At start of lock-up operation, if lock-up clutch cannot be engaged even when duty ratio of torque converter clutch solenoid remains 100% for more than specified time, TCM judges that torque converter clutch is stuck OFF.

MONITOR EXECUTION
Continuous

MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
- P0335: Crankshaft position sensor malfunction
- P0715: Input shaft speed sensor malfunction
- P0720: Output shaft speed sensor malfunction
- P0742: Torque converter clutch system malfunction (Stuck ON)
- P0743: Torque converter clutch solenoid malfunction
- P0753: Shift solenoid-A (Low and reverse solenoid) malfunction
- P0758: Shift solenoid-B (Underdrive solenoid) malfunction
- P0763: Shift solenoid-C (Second solenoid) malfunction
- P0768: Shift solenoid-D (Overdrive solenoid) malfunction
- P1751: A/T control relay malfunction

Sensor (The sensor below is determined to be normal)
- Input shaft speed sensor
- Output shaft speed sensor
- Crankshaft position sensor
- Torque converter clutch solenoid
- Shift solenoid-A (Low and reverse solenoid)
- Shift solenoid-B (Underdrive solenoid)
- Shift solenoid-C (Second solenoid)
- Shift solenoid-D (Overdrive solenoid)
- A/T control relay

LOGIC FLOW CHARTS (Monitor Sequence):

DTC SET CONDITIONS (Entry Conditions and Malfunction Thresholds)

Check Conditions
- Solenoid status: plunging into connecting condition.
- Transmission range switch position: D, 3 or 2.

Judgement Criteria
- Time during 100% duty: 4 seconds or more.

OBD-II DRIVE CYCLE PATTERN
Start the engine, and drive at 100 km/h (62 mph) for 10 seconds. Then stop the vehicle, and turn OFF the ignition switch. After that, restart the engine, and drive again at 100km/h (62mph) for 10 seconds.