LeeBoy 8510E - Page 140

SPN FMI DTC SYMPTOM/CAUSE RECOVERY FROM ERROR
523527 2 ECU monitoring error.
Failure of monitoring IC of CPU.
Engine stops.
Key switch turn OFF.
523535 0
Injector charge voltage:
High
EGR stops. Engine forcibly stops 60
seconds later.
Key switch turn OFF.
523536 2 EGR feedback error.
DC motor feedback control error.
During wrong duty feedback, activation
of restoration will repeat 30 times. If
the restoration was not successfully
completed, it will be judged as a
feedback error. EGR stops.
Diagnostic counter = zero
523537 2
EGR DC motor
temperature error.
Estimated temperature is 113° F (45°
C) or above. EGR stops.
Diagnostic counter = zero
523538 2 QR data error.
QR data read error from EEPROM.
Nozzle correction is not executed.
Key switch turn OFF.
523539 2 Pump seizing 1.
Rail pressure of 230 MPa (33400 psi
or 2350 kgf/cm
2
) or more continues
one second under the condition of
above 800 min-1 (rpm).
Under 800 min-1 (rpm) condition, rail
pressure of 220 MPa (31900 psi or
2250 kgf/cm
2
) or more continues one
second under the condition of below
800 min-1 (rpm). [Threshold changes
depending upon the engine speed.
700 min-1 (rpm) should be used as a
reference.
Key switch turn OFF to minimize PM
emission to DPF and avoid extremely
high pressure in injection system.
523540 2 Pump seizing 2.
Rail pressure of 197MPa (28600 psi or
2010 kgf/cm
2
) or more continues one
second under the condition of above
800 min-1 (rpm).
Under 800 min-1 (rpm) condition, rail
pressure of 220 MPa (31900 psi or
2250 kgf/cm
2
) or more continues one
second under the condition of below
800 min-1 (rpm). [Threshold changes
depending upon the engine speed.
700 min-1 (rpm) should be used as a
reference.
Key switch turn OFF.
523541 3 EGR lift sensor: High
+B short circuit of sensor/harness.
Failure of sensor. Voltage of ECR lift
sensor is 4.5V or above. EGR stops.
Key switch turn OFF.
523541 4 EGR lift sensor: Low
Open circuit or short circuit of sensor/
harness. Failure of sensor. Voltage of
ECR lift sensor is 0.3V or less. EGR
stops.
Key switch turn OFF.
523543 2
Accelerator position
sensor error (CAN).
Accelerator position sensor signal
error (sensor/harness open circuit,
ground short circuit, etc.).
Diagnostic counter = zero.
CAN signal recovers.
523544 3
+B short of air heater
relay driving circuit.
+B short circuit of harness. Faulty
starting. White smoke increases.
Key switch turn OFF.
Maintenance
LeeBoy 8510D Conveyor Paver5-50