No.18 Excessive Shift Shock Is Felt When Upshifting And Downshifting: Notes

18	Excessive shift shock is felt when upshifting and downshifting
DESCRIPTION	Excessive shift shock is felt when depressing accelerator pedal to accelerate at upshifting. During cruising, excessive shift shock is felt when depressing accelerator pedal at downshifting.
POSSIBLE CAUSE	Shift shock may worsen when the fail-safe is operating. The shift shock has worsened if the APP sensor, input/turbine speed sensor, or VSS signal malfunctions. Clutch slippage, burnt (Forward clutch, 2-4 brake band, 3-4 clutch) Line pressure low, high Shift solenoid A malfunction Shift solenoid B malfunction Shift solenoid C malfunction Shift solenoid D malfunction Shift solenoid E malfunction Pressure control solenoid A malfunction Pressure control solenoid B malfunction Control valve body malfunction Body GND malfunction Signal malfunction TFT sensor malfunction VSS malfunction Sensor GND malfunction APP sensor malfunction Input/turbine speed sensor malfunction Poor hydraulic operation (Malfunction in position change) Oil pressure switch malfunction Forward accumulator malfunction Servo apply accumulator malfunction Engine mounts installation Loose attaching bolts Worn parts 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 .)

Excessive shift shock is felt when upshifting and downshifting

DESCRIPTION

Excessive shift shock is felt when depressing accelerator pedal to accelerate at upshifting.
During cruising, excessive shift shock is felt when depressing accelerator pedal at downshifting.

POSSIBLE CAUSE

Shift shock may worsen when the fail-safe is operating. The shift shock has worsened if the APP sensor, input/turbine speed sensor, or VSS signal malfunctions.

Clutch slippage, burnt (Forward clutch, 2-4 brake band, 3-4 clutch)
- Line pressure low, high
- Shift solenoid A malfunction
- Shift solenoid B malfunction
- Shift solenoid C malfunction
- Shift solenoid D malfunction
- Shift solenoid E malfunction
- Pressure control solenoid A malfunction
- Pressure control solenoid B malfunction
- Control valve body malfunction
- Body GND malfunction
Signal malfunction
- TFT sensor malfunction
- VSS malfunction
- Sensor GND malfunction
- APP sensor malfunction
- Input/turbine speed sensor malfunction
Poor hydraulic operation (Malfunction in position change)
- Oil pressure switch malfunction
- Forward accumulator malfunction
- Servo apply accumulator malfunction
Engine mounts installation
- Loose attaching bolts
- Worn parts

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 .)