LeeBoy 8515E - Page 142

SPN FMI DTC SYMPTOM/CAUSE RECOVERY FROM ERROR
171 3
Intake air temperature
built-in MAF sensor: High
Open circuit or +B short circuit
of sensor/harness. Intake air
temperature built-in MAF sensor
voltage: 4.9V or more.
Diagnostic counter = zero
171 4
Intake air temperature
built-in MAF sensor: Low
Ground short circuit of sensor/
harness. Intake air temperature built-
in MAF sensor voltage: 0.1V or less.
Diagnostic counter = zero
172 0
Intake air temperature:
High
Intake air temperature higher than
140° F (60° C).
Key switch turn OFF.
172 3
Intake air temperature
error: High
Open circuit or +B short circuit
of sensor/harness. Intake air
temperature sensor is 4.9V or above.
Diagnostic counter = zero
(White smoke increases at low
temperature.)
172 4
Intake air temperature
error: Low
Ground short circuit of sensor/
harness. Intake air temperature
sensor is 0.05V or less.
Diagnostic counter = zero
(White smoke increases at low
temperature.)
174 0 Fuel temperature high.
Fuel temperature higher than 194° F
(90° C).
Diagnostic counter = zero
174 3
Fuel temperature sensor:
High
Open circuit or +B short circuit
of sensor/harness. Voltage of
temperature sensor in supply pump is
4.9V or above.
Diagnostic counter = zero
174 4
Fuel temperature sensor:
Low
Ground short circuit of sensor/
harness. Voltage of temperature
sensor in supply pump is 0.1V or less.
Diagnostic counter = zero
190 0 Engine speed.
Engine speed exceeds threshold
speed. Engine speed ≥ 3500 min-1
(rpm).
Diagnostic counter = zero
628 2 Program memory. Check-Sum error.
Key switch turn OFF.
Engine stopped without delay.
633 7
Pressure limiter
emergency open.
Combination of fuel leak and one of
conditions below:
1. Rail pressure exceeds 191MPa
(27700 psi or 1950 kgf/cm
2
).
2. Within one second after the rail
pressure goes below temperature in
#1, it increases above.
Key switch turn OFF.
EGR stop.
(Engine speed may go down due to
lack of fuel pressure.)
636 2
Crank position sensor
pulse number error.
Open circuit or short circuit of sensor/
harness. Failure of sensor. Pulse
rotation is not 56 teeth. Faulty starting.
Engine vibration increases slightly.
Diagnostic counter = zero
636 7
NE-G phase shift.
NE: Crankshaft position
sensor.
G: Camshaft position
sensor.
Large phase shift between NE and G
pulses within +/- 15 degrees. Engine
hesitates at start-up.
Diagnostic counter = zero
636 8
No input of NE sensor
pulse.
Open circuit or short circuit of sensor/
harness. Failure of sensor. No
recognition of NE sensor pulse. Faulty
starting. Engine vibration increases
slightly.
Diagnostic counter = zero
5-58 LeeBoy 8515E Conveyor Paver
Maintenance