Code [559/Ca559] Rail Press Low Error - Komatsu 114E-3 Series Shop Manual

SEN00460-01
E-43 Code [559/CA559] Rail Press Low Error
Error code Failure code
559
Contents of
• No-pressure feed (1) occurred in common rail circuit.
trouble
Action of con-
• None in particular.
troller
Problem that • Engine does not start or starting performance is poor
appears on • Exhaust smoke is black.
machine • Engine output drops.
Related infor-
• Method of reproducing failure code: Start engine.
mation
1 Fuel leakage to outside
Defective low-pressure circuit
2
device
Possible causes
and standard
value in normal
state
Defective injector (High-pres-
3
sure piping in head included)
30
Trouble
CA559
Causes
No-pressure feed by supply pump 1
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Inspect for fuel leakage directly (visual inspection at engine low
idle).
a For check of pressure in fuel low-pressure circuit, see Testing and
adjusting, "Testing fuel pressure."
• Measure pressure at the fuel filter inlet side.
• Cranking speed: Min. 150 rpm
Pressure in fuel low-
pressure circuit
a For check of pressure in fuel low-pressure circuit, see Testing and
adjusting, "Testing fuel pressure."
• Measure at fuel filter outlet side.
Pressure in fuel low-
pressure circuit
a For check of pressure in fuel low-pressure circuit, see Testing and
adjusting, "Testing fuel pressure."
• Measure at fuel filter inlet and outlet sides.
• Difference of pressure in front and rear part of filter = Fuel filter
inlet pressure – Fuel filter outlet pressure
Difference of pressure in
front and rear part of filter
a For check of fuel suction pressure, see Testing and adjusting,
"Testing fuel pressure."
• Measure at gear pump fuel inlet side of supply pump.
Fuel suction circuit pres-
sure (Gear pump side)
a For check of fuel suction pressure, see Testing and adjusting,
"Testing fuel pressure."
• Measure at fuel connector side.
Fuel suction circuit pres-
sure (Fuel connector
side)
a For testing of return rate from injector, see Testing and adjusting,
"Testing leakage from pressure limiter and return rate from injec-
tor."
Return rate from injector
40 Troubleshooting
Min. 0.14 MPa
Cranking
{Min. 1.4 kg/cm
Min. 0.48 MPa
At high idle
{Min. 4.9 kg/cm
Max. 0.14 MPa
At high idle
{Max. 1.4 kg/cm
Max. 33.9 kPa
At high idle
{Max. 254 mmHg}
Max. 27.1 kPa
At high idle
{Max. 203 mmHg}
Cranking (When
Max. 100 cc/
engine cannot be
started)
At low idle (When
Max. 300 cc/
engine can be
started)
114E-3 Series
1
2 }
2 }
2 }
30 sec.
45 sec.