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JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [ET6A-EL (US)]

JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [ET6A-EL (US)]

SM2566139


id0503n21019n5

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 (ET6A-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. (See PID/DATA MONITOR INSPECTION.)
― APP (APP sensor)
― ENG_RPM (CKP sensor)
• Is there any malfunction? (See PID/DATA MONITOR TABLE [PCM (SKYACTIV-G (US))].)
Yes
Repair or replace any malfunctioning parts according to the inspection result.
No
Replace the automatic transaxle.