Sakai R2-4, Shop Manual

Page: 176 / 234

10-016
TROUBLESHOOTING
J1939-73
Description DTC Description
Diagnosis
SPN FMI
523544
3
Air heater relay drive
abnormal
Short circuit in air heater relay
driving cB
Short circuit in air heater relay
driving cB
•
4
Short circuit in air heater relay
driving circuit GND
Open circuit in air heater relay
driving circuit, ground fault
•
523547 2 CAN2 bus off CAN2 bus off
Short circuit in CAN2 +B/GND or
traffic abnormally high
•
523548 2 Open circuit in CAN2 frame Open circuit in CAN_KBT
original frame
Open circuit in CAN_KBT
original frame
•
523572 4
EGR motor abnormal
EGR position sensor abnormal EGR position sensor abnormal •
523574
3 Open circuit in EGR motor Open circuit in EGR motor coil •
4 Short circuit in EGR motor Short circuit in EGR motor coil •
523575 7
EGR (DC motor) abnormal
EGR valve sticking
(FB abnormal)
EGR valve sticking •
523576 2
EGR motor ambient
temperature abnormal
EGR motor temperature
abnormally high
•
523577 2
EGR thermistor sensor with
built-in valve abnormal
EGR motor temperature sensor
abnormal
•
523578 2
Open circuit in CAN_ EGR
control line
Disconnection (open
circuit) in EGR control line
communication
CAN communication with EGR •
523580 2
Intake throttle FB
(feed back) abnormal
Intake throttle FB (feed back)
abnormal
Intake throttle DC motor feed
back abnormal
•
523582
3
Intake throttle lift sensor
abnormal
Intake throttle lift sensor
abnormal (High)
Intake throttle lift sensor High •
4
Intake throttle lift sensor
abnormal (Low)
Intake throttle lift sensor Low •
523589 17
Water temperature rise
during manual regeneration
insufficient
Water temperature rise
during manual regeneration
insufficient
While regenerating, conditions
required for warming up
the engine not established
(Insufficient water temperature
rise)
•
523590 16 Manual regeneration
process time-up abnormal
Manual regeneration process
time-up abnormal
Regeneration process not
end due to insufficient DPF
temperature rise
(Regeneration time)
•
523591 2
Open circuit in CAN2 frame
CAN_CCVS communication
disruption
CAN_CCVS communication
disruption
•
523592 2
CAN_CM1 communication
disruption
CAN_CM1 communication
disruption
•
523593 2
CAN_DDC1 communication
disruption
CAN_DDC1 communication
disruption
•
523594 2
CAN_ETC2 communication
disruption
CAN_ETC2 communication
disruption
•
523595 2
CAN_ETC5 communication
disruption
CAN_ETC5 communication
disruption
•
523596 2
CAN_TSC1 communication
disruption
CAN_TSC1 communication
disruption
•
523598 2
CAN_EBC1 communication
disruption
CAN_EBC1 communication
disruption
•