Failure Code [Ca559] Rail Press Low Error - Komatsu PC210-8 Shop Manual

40 Troubleshooting

Failure code [CA559] Rail Press Low Error

User code Failure code
E15
Contents of
• There is low pressure error in common rail circuit.
trouble
Action of
• None in particular.
controller
• Engine does not start at all or does not start easily.
Problem that
appears on
• Exhaust gas becomes black.
machine
• Engine output lowers.
• Common rail pressure can be checked with monitoring function. (Code: 36400 Common rail pres-
Related infor-
sure)
mation
• Method of reproducing failure code: Start engine.
1 Fuel leakage to outside
Defect in low pressure cir-
2
cuit parts
3 Defective pressure limiter
Possible causes
and standard
value in normal
state
Defective injector (including
4
high pressure piping in head)
5 Defective supply pump
PC210, 230, 240-8
Trouble
CA459
Cause
Common rail pressure low error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Fuel may be leaking to outside. Check it directly (Check visually
while running engine at low idle).
a For check of pressure in fuel low pressure circuit, see Testing
and adjusting, Checking fuel pressure.
During cranking (if
Pressure in fuel low-
pressure circuit
a For check of leakage through pressure limiter, see Testing and
adjusting, Checking fuel return rate and leakage.
Leakage through
pressure limiter
a For check of return rate from injector, see Testing and adjusting,
Checking fuel return rate and leakage.
During cranking (if
Return rate from
injector
a For check of return rate from supply pump, see Testing and
adjusting, Checking fuel return rate and leakage.
During cranking (if
Return rate from sup-
ply pump
0.3 – 1.1 MPa
engine cannot be
{3.1 – 11.3 kg/cm
started)
During low idle (if
0.5 – 1.3 MPa
engine can be
{5.1 – 13.3 kg/cm
started)
During low idle 0 cc (No leakage)
engine cannot be Max. 90 cc/min.
started)
During low idle (if
engine can be Max. 180 cc/min.
started)
engine cannot be Max. 140 cc/min.
started)
During low idle (if
engine can be Max. 1,000 cc/min.
started)
UEN00241-01
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2
}
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}
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