No.17 Excessive Shift Shock From N To D Or N To R Position: Notes

17	Excessive shift shock from N to D or N to R position
DESCRIPTION	Strong shock is felt when shifting from N to D or N to R position at idle.
POSSIBLE CAUSE	Shift shock may worsen when the fail-safe is operating. If no DTC is output, the shift shock may worsen due to poor operation of the control valve body or sticking of the clutch. Clutch burnt (N→D: Forward clutch, N→R: Reverse clutch or low and reverse brake) Line pressure low, high APP sensor malfunction CKP sensor malfunction VSS malfunction Input/turbine speed sensor malfunction Shift solenoid A malfunction Shift solenoid B malfunction Shift solenoid C malfunction Shift solenoid D malfunction Pressure control solenoid A malfunction Control valve body malfunction Sensor GND malfunction Body GND malfunction Poor hydraulic operation (Malfunction in position change) Forward accumulator malfunction Servo apply accumulator malfunction Oil pressure switch malfunction Idle speed high Poor tightening torque of engine mount, exhaust mount Poor operation of mechanical pressure Selector lever 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 .)

Excessive shift shock from N to D or N to R position

DESCRIPTION

POSSIBLE CAUSE

Shift shock may worsen when the fail-safe is operating. If no DTC is output, the shift shock may worsen due to poor operation of the control valve body or sticking of the clutch.

Clutch burnt (N→D: Forward clutch, N→R: Reverse clutch or low and reverse brake)
- Line pressure low, high
- APP sensor malfunction
- CKP sensor malfunction
- VSS malfunction
- Input/turbine speed sensor malfunction
- Shift solenoid A malfunction
- Shift solenoid B malfunction
- Shift solenoid C malfunction
- Shift solenoid D malfunction
- Pressure control solenoid A malfunction
- Control valve body malfunction
- Sensor GND malfunction
- Body GND malfunction
Poor hydraulic operation (Malfunction in position change)
- Forward accumulator malfunction
- Servo apply accumulator malfunction
- Oil pressure switch malfunction
Idle speed high
Poor tightening torque of engine mount, exhaust mount
Poor operation of mechanical pressure
- Selector lever 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 .)