No. 16 Judder Upon Torque Converter Clutch (TCC) Operation [Aw6A-El]

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DESCRIPTION AND POSSIBLE CAUSE

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 opening signal VSS malfunction Input/turbine speed sensor malfunction Sensor ground malfunction TCC control solenoid malfunction Control valve body malfunction Torque converter malfunction Centrifugal hydraulic pressure clutch is not operating properly

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 opening signal
  - VSS malfunction
  - Input/turbine speed sensor malfunction
  - Sensor ground malfunction
  - TCC control solenoid malfunction
  - Control valve body malfunction
- Torque converter malfunction
- Centrifugal hydraulic pressure clutch is not operating properly