Code [1633/Ca1633] Komnet Error - Komatsu 114E-3 Series Shop Manual

SEN00460-01
E-48 Code [1633/CA1633] KOMNET Error
Error code Failure code
1633 CA1633
Contents of • Engine controller detected abnormality in KOMNET communication circuit to controllers on applica-
trouble ble machine side.
Action of con- • Depends on machine model.
troller • If problem is removed, system is returned to normal operating state.
Problem that • KOMNET communication information may not be transmitted correctly to cause incorrect operation
appears on of machine.
machine (Problem depends on failure occurrence location.)
Related infor-
• Method of reproducing failure code: Starting switch ON.
mation
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, disconnection)
5 Defective pump controller
40
Trouble Abnormality in KOMNET
Causes
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CM02 (female) (8)
(9) – C01 (female) (45), – J2 (female) (46),
– K02 (female) (A)
Wiring harness between CM02 (female) (10)
– C01 (female) (64), – J2 (female) (47),
– K02 (female) (B)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CM02 (female) (8)
(9) – C01 (female) (45), – J2 (female) (46),
– K02 (female) (A), – N08 (male) (3)
Wiring harness between CM02 (female) (10)
– C01 (female) (64), – J2 (female) (47),
– K02 (female) (B), – N08 (male) (10)
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Wiring harness between CM02 (female) (8)
(9) – C01 (female) (45), – J2 (female) (46),
– K02 (female) (A), – N08 (male) (3)
Wiring harness between CM02 (female) (10)
– C01 (female) (64), – J2 (female) (47),
– K02 (female) (B), – N08 (male) (10)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
If causes 1 – 4 are not detected, engine controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
Standard value in normal state/Remarks on troubleshooting
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
47 – 67 z
114E-3 Series