Kubota WG1605-E3 Diagnostic Manual page 122

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, DM
DTC
Fuel Pump Relay
Name
Control/Coil
DTC Name Fuel Pump Relay Coil Short-To-Power
SPN 1348
J1939
FMI 3
MIL ON
• Shorted relay
pull in coil
• relay driver
Detected Item
circuit shorted
to voltage in
wire harness
DTC Set • Engine Running
Preconditions
• Fuel Pump
relay coil
output short
DTC Set to power/
Conditions voltage
Period for • 10 samples
Judgment or
Number of
Occurrence
for Judgment
System • None
Action
Engine
ON
Warning Light
DTC
Name 5 V External
DTC Name Sensor Supply Voltage 2 Low (5Vext2)
SPN
J1939
FMI
MIL
• Wiring harness short to ground
Detected Item • ECM malfunction
DTC Set • Key-On, Engine OFF, or Running
Preconditions
DTC Set • 5VE2 < 4.60 V
Conditions
Period for • 1 sec
Judgment or
Number of
Occurrence
for Judgment
System • AL Disable
Action • Power derate 1
Engine
ON
Warning Light
629
Fuel Pump Motor
5 V External
Feedback
Sensor Supply Voltage 1 Low (5Vext1)
1347
6
ON
• Wiring harness short to ground
• ECM malfunction
• Key-On, Engine OFF, or Running
• Fuel pump
• 5VE1 < 4.60 V
motor
high-side
off-state < 4.0
volts
• battery
voltage < 16.0
volts
• 2 sec • 1 sec
• None • AL Disable
• Power derate 1
ON ON
652
5 V External
Sensor Supply Voltage 2 High (5Vext2)
1080
4
ON
• Wiring harness short to 12.0 V
power
• ECM malfunction
• Key-On, Engine OFF, or Running
• 5VE2 > 5.40 V
• 1 sec
• AL Disable
• Power derate 1
ON
642
1079
4
ON
653
1080
3
ON
1-112
ECM SYSTEM
643
5 V External
Sensor Supply Voltage 1 High (5Vext1)
1079
3
ON
• Wiring harness short to 12.0 V
power
• ECM malfunction
• Key-On, Engine OFF, or Running
• 5VE1 > 5.40 V
• 1 sec
• AL Disable
• Power derate 1
ON
686
Power Relay Control/Coil
Power Relay Ground Short
1485
4
ON
• Short to ground in relay pull in coil
• short to ground in relay driver circuit
in wire harness
• Key On, Engine Off
• Power relay coil output shorted to
ground
• 10 samples
• None
OFF
KiSC issued 12, 2016 A