NO.14 EXCESSIVE SHIFT SHOCK FROM N TO D OR N TO R POSITION/RANGE [DJVA-EL]


id050312247600

14

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

DESCRIPTION
•  Strong shock is felt when shifting from N to D or N to R position/range at idle.
POSSIBLE CAUSE
Shift shock may worsen when fail-safe is operating. If no DTC is output, shift shock may worsen due to selector lever position disparity, poor operation of control valve body or burnt of clutch.
•  Poor hydraulic operation (Malfunction in range change)
•  Idle speed high (PCM judges low engine coolant temperature)
•  Malfunction or poor tightening torque of engine mount
•  Loose attaching bolts or worn suspension parts
•  Clutch burnt (N→D: Forward clutch, N→R: Reverse brake)
―  Line pressure low or high
―  Input signal malfunction (Characteristic defective)
•  APP sensor
•  CKP sensor
•  Input/turbine speed sensor
•  Transaxle fluid temperature (TFT) sensor
•  TR switch
•  VSS
•  Sensor GND
―  Control solenoid malfunction (Stuck)
•  Belt grip pressure linear solenoid
•  Torque converter clutch (TCC) solenoid (Stuck OFF)
•  Torque converter clutch (TCC) engage solenoid (Stuck ON)
•  Body GND
―  Control valve body malfunction (Improper operation, stuck)
•  Forward clutch operation pressure system
•  Reverse brake operation pressure system
•  Line pressure-adjusting