Failure Code [Da29Kq] Model Selection Abnormality - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02630-05

Failure code [DA29KQ] Model Selection Abnormality

User code Failure code
— DA29KQ
Contents of
• Model code signal for model which is not registered in controller is input.
trouble
Action of • Changes input model code to code of default model (PC300) and continues control.
controller • Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on • Since control is carried out on assumption that model is PC300, no particular problem occur.
machine
• Model code of pump controller can be checked with monitoring function.
(Code: 00200 Controller model code)
Related infor-
• Condition of model selection signal can be checked with monitoring function.
mation
(Code: 02201 Switch input 2)
• Method of reproducing failure code: Turn starting switch ON.
Defective model selection
1 connector (Internal discon-
nection or short circuit)
Disconnection in wiring har-
ness (Disconnection in wiring
2
or defective contact in con-
nector)
Possible causes
and standard
value in normal
state
Ground fault in wiring har-
3 ness (Short circuit with GND
circuit)
4 Defective pump controller
66
Model selection abnormality
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Between (1), (2), (4), (7) – (8)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CP01 (female) (77)
– S30 (male) (3)
Wiring harness between S30 (male) (8) –
J05 – chassis ground (T07)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Wiring harness between CP01 (female) (40)
– S30 (male) (1)
Wiring harness between CP01 (female) (21)
– S30 (male) (2)
Wiring harness between CP01 (female) (58)
– S30 (male) (4)
Wiring harness between CP01 (female) (39)
– S30 (male) (7)
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Between (21), (39), (40), (58) –
Between (77) – chassis ground
S30 (female)
Between (3) – (8)
CP01 (female)
chassis ground
40 Troubleshooting
1
Resistance
Min. 1 Mz
Max. 1 z
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resistance
Min. 1 Mz
Max. 1 z
PC300, 350-8