A/T Does Not Perform Lock-Up

A/T Does Not Perform Lock-up

SYMPTOM: A/T does not perform lock-up at the specified speed.

DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Execute self-diagnosis.
Do the self-diagnostic results indicate torque converter clutch solenoid valve, engine speed signal, turbine revolution sensor, accelerator pedal position sensor, CAN communication?
YES >>Check the malfunctioning system. Refer to "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE", "DTC P0725 ENGINE SPEED SIGNAL", "DTC P1716 TURBINE REVOLUTION SENSOR", "DTC P1705 THROTTLE POSITION SENSOR", "DTC U1000 CAN COMMUNICATION LINE".
NO >>GO TO 2.

2. CHECK A/T FLUID LEVEL
Check A/T fluid level again. Refer to "Checking A/T Fluid".
OK or NG
OK>> GO TO 3.
NG>> Refill ATF.

3. CHECK LINE PRESSURE
Check the line pressure at the engine stall point. Refer to "LINE PRESSURE TEST".
OK or NG
OK>> GO TO 4.
NG >> Check line pressure solenoid valve. Refer to "DTC P0745 LINE PRESSURE SOLENOID VALVE".

4. CHECK SYMPTOM
Check again.
OK or NG
OK>> INSPECTION END
NG>> GO TO 5.

5. PERFORM TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK>> INSPECTION END
NG>> Repair or replace damaged parts.