NO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [SJ6A-EL]

id050307802100

16

Judder upon torque converter clutch (TCC) operation

DESCRIPTION

•  Vehicle jolts when TCC is engaged.

POSSIBLE CAUSE

•  Poor TCC engagement due to either slippage because the TCC piston is stuck or the line pressure is low.

Caution

•  If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF.

―  TCC slippage, burnt

•  Line pressure low

•  Incorrect accelerator pedal position signal

•  Incorrect engine speed signal

•  Incorrect engine coolant temperature signal

•  Incorrect brake switch signal

•  Incorrect engine torque signal

•  VSS malfunction

•  Turbine sensor malfunction

•  Sensor ground malfunction

•  TCC control solenoid malfunction

•  Control valve body malfunction

―  Torque converter malfunction

16	Judder upon torque converter clutch (TCC) operation
DESCRIPTION	• Vehicle jolts when TCC is engaged.
POSSIBLE CAUSE	• Poor TCC engagement due to either slippage because the TCC piston is stuck or the line pressure is low. Caution • If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF. ― TCC slippage, burnt • Line pressure low • Incorrect accelerator pedal position signal • Incorrect engine speed signal • Incorrect engine coolant temperature signal • Incorrect brake switch signal • Incorrect engine torque signal • VSS malfunction • Turbine sensor malfunction • Sensor ground malfunction • TCC control solenoid malfunction • Control valve body malfunction ― Torque converter malfunction