NO.18 EXCESSIVE SHIFT SHOCK IS FELT WHEN UPSHIFTING AND DOWNSHIFTING [JA5A-EL]


BME050301030254

18

Excessive shift shock is felt when upshifting and downshifting

DESCRIPTION

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

POSSIBLE CAUSE

• Shift shock may worsen when fail-safe is operating. The shift shock has worsened if the TP sensor, input/turbine speed sensor, or VSS signal malfunctions.
1. Clutch slippage, burnt
• Line pressure low, high
• Incorrect throttle position signal
• VSS malfunction
• Input/turbine speed sensor malfunction
• TFT sensor malfunction
• Shift solenoid A, B, or C malfunction
• TCC solenoid valve malfunction
• Throttle cable mis-adjustment
• Body GND and sensor GND malfunction
• Control valve body malfunction
2. Poor hydraulic operation (Malfunction in range change)
Note
• Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.