NO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [JA5A-EL]


BME050301030252

16

Judder upon torque converter clutch (TCC) operation

DESCRIPTION

• Vehicle jolts when TCC engaged.

POSSIBLE CAUSE

• Poor TCC engagement due to either slippage because the TCC is stuck or 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.
1. Torque converter clutch piston slipped, burned
• Line pressure low
• Incorrect throttle position signal
• VSS malfunction
• Input/turbine speed sensor malfunction
• Sensor GND malfunction
• TCC solenoid valve malfunction
• Control valve body malfunction
2. Torque converter malfunction
Note
• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.