No.14 Engine Flares Up Or Slips When Upshifting Or Downshifting: Notes

14

Engine flares up or slips when upshifting or downshifting

DESCRIPTION

When accelerator pedal is depressed, engine speed increases normally but vehicle speed increases slowly.
When accelerator pedal is depressed while driving, engine speed increases but vehicle speed does not.

POSSIBLE CAUSE

There is clutch slippage because the clutch is stuck or the line pressure is low.
1. Clutch stuck, slippage, burnt (Forward clutch, 3-4 clutch, 2-4 brake band, one-way clutch)
  - Line pressure low
  - Shift solenoid A malfunction
  - Shift solenoid B malfunction
  - Shift solenoid C malfunction
  - Shift solenoid D malfunction
  - Shift solenoid E malfunction
  - Shift solenoid F malfunction
  - Pressure control solenoid A malfunction
  - Body GND malfunction
  - Control valve body malfunction
2. Signal malfunction
  - VSS malfunction
  - Sensor GND malfunction
  - APP sensor malfunction
  - MAF sensor malfunction
  - CKP sensor malfunction
  - Input/turbine speed sensor malfunction
3. Poor operation of mechanical pressure
  - Selector lever position disparity
  - TR switch position disparity
NOTE:
- Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION -- AUTOMATIC TRANSAXLE .) (See BASIC INSPECTION .)