A/T Does Not Hold Lock-Up Condition

A/T Does Not Hold Lock-up Condition

SYMPTOM: The lock-up condition cannot be maintained for more than 30 seconds.

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, 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 U1000 CAN COMMUNICATION LINE". P0740 P0725 P1716 Transmission Control Systems
NO >> GO TO 2.

2. CHECK A/T FLUID LEVEL





Check A/T fluid level again.

OK or NG
OK >> GO TO 3.
NG >> Refill ATF.

3. CHECK A/T FLUID CONDITION
1. Remove oil pan.





2. Check A/T fluid condition.

OK or NG
OK >> GO TO 4.
NG >> GO TO 7.

4. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "Symptom Chart". Symptom Chart

OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.

5. CHECK SYMPTOM
Check again.

OK or NG
OK >> INSPECTION END
NG >> GO TO 5.

6. 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.

7. DETECT MALFUNCTIONING ITEM
^ Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "Symptom Chart".

OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.