Sakai R2-4, Shop Manual

Page: 175 / 234

10-015
TROUBLESHOOTING
J1939-73
Description DTC Description
Diagnosis
SPN FMI
4765
0
Exhaust temperature rise
abnormal T0
Exhaust temperature rise
abnormal T0
DOC inlet temperature (T0)
abnormally high
•
3
Exhaust temperature
sensor 0 (T0 : DOC inlet)
abnormal
Exhaust temperature sensor 0
(T0 : DOC inlet) High
Open circuit in sensor/harness,
+B short-circuited
•
4
Exhaust temperature sensor 0
(T0 : DOC inlet) Low
Short circuit in sensor/harness
ground
•
523523
2
Open circuit in common 1
system
Open circuit in injector driving
circuit: Common 1 system,
or TwV 1 and 3 (1st and 4th
cylinders) simultaneously
Open circuit in harness •
3
Short circuit in common 1
TwV driving system
Short circuit in battery: Injector
driving circuit at ECU side
(Common 1 system), or 1st
and 4th cylinders at INJ side
simultaneously
Short circuit in hB •
4
Short circuit in GND: Injector
driving circuit at ECU side
(Common 1 system), or 1st
and 4th cylinders at INJ side
simultaneously
Short circuit in harness ground •
523524
2
Open circuit in common 2
system
Open circuit in injector driving
circuit: Common 2 system, or
TwV 2 and 4 (3rd and 2nd
cylinders) simultaneously
Open circuit in harness •
3
Short circuit in common 2
TwV driving system
Short circuit in battery: Injector
driving circuit at ECU side
(Common 2 system), or 2nd
and 3rd cylinders at INJ side
simultaneously
Short circuit in hB •
4
Short circuit in GND: Injector
driving circuit at ECU side
(Common 2 system), or 2nd
and 3rd cylinders at INJ side
simultaneously
Short circuit in harness ground •
523525 1
Injector charge voltage
abnormal
ECU injector charge voltage
insufficient
Injector charge voltage
insufficient
ECU charge circuit failure
•
•
523527 2
ECU flash ROM and CPU
abnormal
ECU CPU abnormal (watching
IC abnormal)
CPU-watching IC failure •
523535 0 Overcharge
ECU injector charge voltage
excessively high
ECU injector charge voltage
excessively high (ECU charge
circuit failure)
•
523538
2
QR abnormal
QR data abnormal
QR code correction data
abnormal
•
7 QR data writing abnormal
QR code correction data
unwritten
•
523539 2
Pump seizure
Pump seizure 1 Pressure abnormally high 1 •
523540 2 Pump seizure 2 Pressure abnormally high 2 •
523543 2
Accelerator pedal or lever
position sensor abnormal
(via CAN)
Accelerator sensor at machine
body abnormal
Abnormal message from
machine body received
•