4. Troubleshooting
4-14
4.4
Others
4.4.1
Residual pressure lamp lights on and engine will not be able to start
4.4.2
Indicator lamps will not glow, but engine stops
(Starter switch is not set in contact, and blown fuse trouble is exempted.)
Check indicator lamp wire
connection (Emergency
stop circuit)
Normal
Faulty
Replace emergency
controller or repair wire
connection
Check each item of
emergency stop functions
Repair the trouble and get
rid of the cause
Wire
short-circuit
Check emergency
controller
Faulty engine
Faulty wire connection
Faulty emergency
controller or faulty wire
connection
Shortage of fuel
Supply fuel
Check fuel
Not exists
Exists
Check fuel filter
Fuel filter clogging
Replace it
Normal
Clogging
Check fuel pipes
Faulty fuel pipes
Faulty
Repair pipes and bleed air
Normal
Check function fuel
air-bleeding
electromagnetic pump
Faulty fuel air-bleeding
electromagnetic pump
Repair or replace it
It works
It will not work
Normal
Clean or replace it
Clogging
Check air filter for clogging
Element clogging
Q
Check the accuracy of
discharge pressure gauge
Residual pressure
start-lock functions
It starts after discharge
pressure gauge drops at
0MPa
More than
0.1MPa
0MPa
Faulty emergency
controller
Replace it
Disconnection between emergency controller
CN1-11 terminal and engine controller (ECU)
(Why residual pressure lamp goes on
could be because Ry3 relay circuit of
emergency controller is faulty.
Start lock is controlled by Ry5 relay of
emergency controller)
Repair wire connection
DC 0V
or lower
DC12V
Check of DCV between
emergency controller
CN1-11 terminal and
ground
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