Excessive Shock When Accelerating From Stop

EXCESSIVE SHOCK WHEN ACCELERATING FROM STOP (NJ8A(X)-EC/NN8A(X)-EC/MM8A(X)-EC) DESCRIPTION AND POSSIBLE CAUSE

Description	Strong shock when accelerating from a stop.
Possible cause	Initial learning is not completed. (See INITIAL LEARNING [MM8AX-EC] .) Input signal malfunction in the following. (See PID/DATA MONITOR INSPECTION .) PCM: APP sensor CKP sensor (See PID/DATA MONITOR TABLE [PCM (H3T)] .) Engine control system malfunction (See SYMPTOM TROUBLESHOOTING [H3T] .) Automatic transmission malfunction (automatic transmission internal parts malfunction) (Refer to [AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION ] ).
System wiring diagram	Not applicable