Komatsu Galeo BR380JG-1E0 Shop Manual page 671

SEN02094-00
Failure code [DAFRMC] CAN communication error (monitor
User code Failure code
E0E DAFRMC
Contents of • Machine monitor detects communication error in CAN communication circuit between work equip-
trouble ment and pump controller and engine controller.
Action of • Operates with default mode.
controller • If cause of failure disappears, system resets itself.
Problem that
• Information may not transmitted normally by CAN communication and machine may not operate
appears on
normally.
machine
Related • Method of reproducing failure code: Turn the starting switch ON.
information • The failure history is recorded.
Disconnection in wiring
harness (Disconnec-
1
tion or defective con-
tact in connector)
Grounding fault in wir-
2 ing harness (Contact
with ground circuit)
Possible
causes and
standard value
in normal state
Hot short in wiring
3 harness (Contact with
24 V circuit)
Defective CAN termi-
nal resistance
4
(Internal short circuit or
disconnection)
Defective machine
5
monitor
18
CAN communication error (monitor controller)
Trouble
(Machine monitor system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with engine starting switch OFF, then carry out troubleshooting
without turning engine starting switch ON.
Wiring harness between P03 (female) (15) – C02
(female) (32), – P04 (female) (A), – G01 (female)
(8), – CE02 (female) (46), – K02 (female) (A), –
C05 (male) (3)
Wiring harness between P03 (female) (16) – C02
(female) (22), – P04 (female) (B), – G01 (female)
(7), – CE02 (female) (47), – K02 (female) (B), –
C05 (male) (10)
a Prepare with engine starting switch OFF, then carry out troubleshooting
without turning engine starting switch.
Between wiring harness P03 (female) (15) – C02
(female) (32), – P04 (female) (A), – G01 (female)
(8), – CE02 (female) (46), – K02 (female) (A), –
C05 (male) (3), and chassis ground
Between wiring harness P03 (female) (16) – C02
(female) (22), – P04 (female) (B), – G01 (female)
(7), – CE02 (female) (47), – K02 (female) (B), –
C05 (male) (10), and chassis ground
a Prepare with engine starting switch OFF, then turn engine starting
switch ON and carry out troubleshooting
Between wiring harness P03 (female) (15) – C02
(female) (32), – P04 (female) (A), – G01 (female)
(8), – CE02 (female) (46), – K02 (female) (A), –
C05 (male) (3), and chassis ground
Between wiring harness P03 (female) (16) – C02
(female) (22), – P04 (female) (B), – G01 (female)
(7), – CE02 (female) (47), – K02 (female) (B), –
C05 (male) (10), and chassis ground
a Prepare with engine starting switch OFF, then carry out troubleshooting
without turning engine starting switch ON.
K02 (male), P04 (male)
If causes 1 – 4 are not detected, the machine monitor may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
Between (A) and (B)
40 Troubleshooting
controller)1
Resistance Max. 1 z
Resistance Max. 1 z
Resistance Min. 1 Mz
Resistance Min. 1 Mz
Voltage Max. 5.5V
Voltage Max. 5.5V
Resistance
120 ± 12 z
BR380JG-1E0