No. 14 Engine Flares Up Or Slips When Upshifting Or Downshifting [Aw6A-El]: Notes

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

14	Engine flares up or slips when upshifting or downshifting
DESCRIPTION	When the accelerator pedal is depressed for acceleration from standstill, engine speed increases but the vehicle speed increases slowly. When the accelerator pedal is depressed while driving, engine speed increases but the vehicle speed does not.
POSSIBLE CAUSE	There is clutch slippage because the clutch is stuck or the line pressure is low. Clutch stuck, slippage (C1 clutch, C2 clutch, C3 clutch, B1 brake) Line pressure low Incorrect accelerator opening signal VSS malfunction Input/turbine speed sensor malfunction Sensor ground malfunction Shift solenoid C malfunction Shift solenoid D malfunction Shift solenoid E malfunction Line pressure control solenoid malfunction TCC control solenoid malfunction Shift solenoid F malfunction Body ground malfunction Control valve body malfunction NOTE: Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION [AW6A-EL] )

Engine flares up or slips when upshifting or downshifting

DESCRIPTION

When the accelerator pedal is depressed for acceleration from standstill, engine speed increases but the vehicle speed increases slowly.
When the accelerator pedal is depressed while driving, engine speed increases but the vehicle speed does not.

POSSIBLE CAUSE

There is clutch slippage because the clutch is stuck or the line pressure is low.
- Clutch stuck, slippage (C1 clutch, C2 clutch, C3 clutch, B1 brake)
  - Line pressure low
  - Incorrect accelerator opening signal
  - VSS malfunction
  - Input/turbine speed sensor malfunction
  - Sensor ground malfunction
  - Shift solenoid C malfunction
  - Shift solenoid D malfunction
  - Shift solenoid E malfunction
  - Line pressure control solenoid malfunction
  - TCC control solenoid malfunction
  - Shift solenoid F malfunction
  - Body ground malfunction
  - Control valve body malfunction
    NOTE:
    Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION [AW6A-EL] )