JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [EV6A-EL]


id0503n3101900

Troubleshooting item

Judder upon torque converter clutch (TCC) operation

Description
•  Vehicle jolts when TCC is engaged.
Possible cause
1.  Signal malfunction
―  APP sensor malfunction
―  CKP sensor malfunction
2.  Torque converter malfunction
System wiring diagram
•  Not applicable
Connector diagram
•  Not applicable

Diagnostic procedure

Step

Inspection

Results

Action

1
VERIFY MALFUNCTION SYMPTOM
•  Is the malfunction symptom at the same level compared to a vehicle of the same model (EV6A-EL vehicles)?
Yes
Symptom troubleshooting is completed.
No
Go to the next step.
2
INSPECT SIGNAL PARTS FOR MALFUNCTION
•  Inspect the value at the following PCM PIDs using the M-MDS.
―  APP (APP sensor)
―  ENG_RPM (CKP sensor)
•  Is there any malfunction?
Yes
Repair or replace any malfunctioning parts according to the inspection result.
No
Replace the automatic transaxle.