Failure Code [Dafrmc] Monitor Comm. Abnormality - Komatsu Galeo PC800-8 Shop Manual

SEN00791-02

Failure code [DAFRMC] Monitor Comm. Abnormality

Action code Failure code
E0E DAFRMC
Contents of • Machine monitor detected communication error in CAN communication circuit between pump control-
trouble ler, KOMTRAX controller and engine controller.
Action of • Fix engine output to E-mode, and limit pump absorption torque to about 80%.
controller • If cause of failure disappears, system resets itself.
Problem that
• Output lowers. (Pump absorption torque decreases.)
appears on
• As the working load increases, engine may stall.
machine
Related
information
Disconnection in wiring har-
ness
1 (Disconnection in wiring or
defective contact in connec-
tor)
Ground fault in wiring har-
ness
2
(Short circuit with GND cir-
cuit)
Possible causes
and standard
value in normal
state
Hot short (Short circuit with
3 24V circuit) in wiring har-
ness
Defective CAN terminal
4
resistance
Defective machine moni-
tor, engine controller, pump
5
controller, or KOMTRAX
controller
68
Monitor Comm. Abnormality
Trouble
(Machine monitor system)
Cause
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CM03 (female) (16) –
CE02 (female) (47), – CP02 (female) (22) –
CK01 (female) (7)
Wiring harnesses between CM03 (female) (15) –
CE02 (male) (46) and – CP02 (females) (32) –
CK01 (female) (8)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CM03 (female) (16) –
CE02 (female) (47), – CP02 (female) (22), –
CK01 (female) (7) – other related circuit and
chassis ground
Wiring harness between CM03 (female) (15) –
CE02 (female) (46), – CP02 (female) (32), –
CK01 (female) (8) – other related circuit and
chassis ground
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Wiring harness between CM03 (female) (16) –
CE02 (female) (47), – CP02 (female) (22), –
CK01 (female) (7) – other related circuit and
chassis ground
Wiring harness between CM03 (female) (15) –
CE02 (female) (46), – CP02 (female) (32), –
CK01 (female) (8) – other related circuit and
chassis ground
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
If causes 1 – 4 are not detected, machine monitor, engine controller,
pump controller, or KOMTRAX controller may be defective. (Since trou-
ble is in system, troubleshooting cannot be carried out.)
Standard value in normal state/Remarks on troubleshooting
K02(male), K03 (male)
Between (A) – (B)
40 Troubleshooting
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Voltage Max. 1 V
Voltage Max. 1 V
Resistance
40 – 80 z
PC800, 850-8