1.CHECK HOSE AND PIPING
 
 2.CHECK AIR PUMP RELAY POWER SUPPLY CIRCUIT-I
 
 3.DETECT MALFUNCTIONING PART
 
 4.CHECK AIR PUMP RELAY POWER SUPPLY CIRCUIT-II
 
 5.DETECT MALFUNCTIONING PART
 
 6.CHECK AIR PUMP RELAY
 
 7.CHECK AIR PUMP POWER SUPPLY CIRCUIT
 
 8.CHECK AIR PUMP GROUND CIRCUIT FOR OPEN AND SHORT
 
 9.CHECK AIR PUMP
 
 10.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-I
 
 11.DETECT MALFUNCTIONING PART
 
 12.CHECK AIR CUT SOLENOID VALVE RELAY POWER SUPPLY CIRCUIT-II
 
 13.DETECT MALFUNCTIONING PART
 
 14.CHECK AIR CUT SOLENOID VALVE RELAY
 
 15.CHECK AIR CUT SOLENOID VALVE POWER SUPPLY CIRCUIT
 
 16.DETECT MALFUNCTIONING PART
 
 17.CHECK AIR CUT SOLENOID VALVE GROUND CIRCUIT FOR OPEN AND SHORT
 
 18.CHECK AIR CUT SOLENOID VALVE
 
 19.CHECK INTERMITTENT INCIDENT