JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [GW6A-EL]

id050318101900

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

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

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY MALFUNCTION SYMPTOM • Is the malfunction symptom at the same level compared to a vehicle of the same model?	Yes	Symptom troubleshooting is completed.
1		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 ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].) ― APP (APP sensor) ― RPM (CKP sensor) • Is there any malfunction?	Yes	Repair or replace any malfunctioning parts according to the inspection result.
2		No	Replace the automatic transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION [GW6A-EL].)