1.CHECK GROUND CONNECTION
 
 2.CHECK FPCM POWER SUPPLY CIRCUIT
 
 3.DETECT MALFUNCTIONING PART
 
 4.CHECK FPCM GROUND CIRCUIT FOR OPEN AND SHORT
 
 5.CHECK FPCM INPUT CIRCUIT FOR OPEN AND SHORT
 
 6.DETECT MALFUNCTIONING PART
 
 7.CHECK FPCM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
 
 8.CHECK FPCM
 
 9.CHECK INTERMITTENT INCIDENT