Lock-Up Is Not Released

Lock-up Is Not Released

SYMPTOM: The lock-up condition cannot be cancelled even after releasing the accelerator pedal.

DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT-86, "SELF-DIAGNOSTIC RESULT MODE". Self-Diagnostic Result Mode
Do the self-diagnostic results indicate torque converter clutch solenoid valve, engine speed signal, turbine revolution sensor, CAN communication?
YES >> Check the malfunctioning system. Refer to AT-114, "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE", AT-112, "DTC P0725 ENGINE SPEED SIGNAL", AT-105, "DTC P0717 TURBINE REVOLUTION SENSOR", AT-93, "DTC U1000 CAN COMMUNICATION LINE".
P0740
P0725
P0717
U1000
NO >> GO TO 2.

2. CHECK SYMPTOM
Check again. Refer to AT-55, "Check at Idle". Check at Idle
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.

3. PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT-83, "TCM Input/Output Signal Reference Values". Pinout Values and Diagnostic Parameters
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.