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-85, "SELF-DIAGNOSTIC RESULT MODE". With Manufacturer's Scan Tool

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 "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE" P0740, "DTC P0725 ENGINE SPEED SIGNAL" P0725, "DTC P1716 TURBINE REVOLUTION SENSOR" P1716, "DTC U1000 CAN COMMUNICATION LINE"U Code Charts
NO >> GO TO 2.

2. CHECK SYMPTOM
Check again.

OK or NG
OK >> INSPECTION END
NG >> GO TO 3.

3. PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to AT-82, "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.