Failure Code [Dafrmc] Can Discon (Monitor Detected) - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02631-02

Failure code [DAFRMC] CAN discon (Monitor detected)

Action code Failure code
E0E DAFRMC
Contents of • Machine monitor detected communication error in CAN communication circuit between pump con-
trouble troller and engine controller.
Action of
machine moni- • If cause of failure disappears, system resets itself.
tor
Problem that
• Information may not transmitted normally by CAN communication and machine may not operate nor-
appears on
mally. (Trouble phenomenon depends on failed section.)
machine
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Disconnection in wiring har-
ness (Disconnection in wiring
1
or defective contact in con-
nector)
Ground fault in wiring har-
2 ness (Short circuit with GND
circuit)
Possible causes
and standard
value in normal
state
Hot short (Short circuit with
3
24V circuit) in wiring harness
Defective CAN terminal
4 resistance (Internal short cir-
cuit or disconnection)
5 Defective machine monitor
4
CAN disconnection (Monitor detected)
Trouble
(Machine monitor system)
Cause Standard value in normal state/Remarks on troubleshooting
a
Wiring harness between CM02 (female) (8),
(9) – CP01 (female) (45), – CE02 (female)
(46), – K02 (female) (A)
Wiring harness between CM02 (female) (10)
– CP01 (female) (64), – CE02 (female) (47),
– K02 (female) (B)
a
Wiring harness between CM02 (female) (8),
(9) – CP01 (female) (45), – CE02 (female)
(46), – K02 (female) (A), – N08 (male) (3)
Wiring harness between CM02 (female) (10)
– CP01 (female) (64), – CE02 (female) (47),
– K02 (female) (B), – N08 (male) (10)
a
Wiring harness between CM02 (female) (8),
(9) – CP01 (female) (45), – CE02 (female)
(46), – K02 (female) (A), – N08 (male) (3)
Wiring harness between CM02 (female) (10)
– CP01 (female) (64), – CE02 (female) (47),
– K02 (female) (B), – N08 (male) (10)
a
If causes 1 – 4 are not detected, machine monitor may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
K02 (male)
Between (A) – (B)
40 Troubleshooting
1
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Max.
Voltage
5.5 V
Max.
Voltage
5.5 V
Resistance
120 ± 12 z
PC300, 350-8