Komatsu PC200-8M0, Shop Manual

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303 Troubleshooting by failure code, Part 3
Failure code [DA29KQ] Model Selection Abnormality
40-303
18
PC200, 200LC, 220, 220LC-8M0
SEN06135-00
Failure code [DA29KQ] Model Selection Abnormality
Action
level
Failure code
Failure
Model Selection Abnormality
(Pump controller system)
L01 DA29KQ
Detail of failure q Model code of input signal is not registered in controller.
Action of con-
troller
q
Controls machine, taking it that machine is default model (PC200).
q Even if cause of failure disappears, machine does not become normal until starting switch is turned
Problem on
machine
q Because pump controller recognizes machine as "PC200", no particular problem occurs.
Related infor-
mation
q
Model code input to pump controller can be checked by using monitoring function.
(Code: 00200 Controller model code)
q
Input of model selection signal can be checked with monitoring function.
(Code: 02201 Switch Input 2)
q
Method of reproducing failure code: Turn starting switch to ON position.
q
PC200-8M0, PC200LC-8M0
Cause Procedure, measuring location, criteria and remarks
1
Defective model selection connec-
tor
(internal open or short circuit)
1. Turn starting switch to OFF position.
2. Disconnect connector S30 and connect T-adapters to female side.
Between S30 (female) (1) and (2) Resistance Min. 1 M
z
Between S30 (female) (1) and (3) Resistance Min. 1 M
z
Between S30 (female) (2) and (3) Resistance Min. 1 M
z
Between S30 (female) (3) and (4) Resistance Min. 1 M
z
Between S30 (female) (4) and (7) Resistance Min. 1 M
z
Between S30 (female) (7) and (8) Resistance Min. 1 M
z
Between S30 (female) (3) and (8) Resistance Max. 1
z
2 Open circuit in wiring harness
1. Turn starting switch to OFF position.
2. Disconnect connector C01 and connect T-adapters to female side.
Between C01 (female) (77) and ground Resistance Max. 1
z
3 Short circuit in wiring harness
1. Turn starting switch to OFF position.
2. Disconnect connector C01 and connect T-adapters to female side.
Between C01 (female) (21) and C01 (female) (77) Resistance Min. 1 M
z
Between C01 (female) (39) and C01 (77) Resistance Min. 1 M
z
Between C01 (female) (40) and C01 (77) Resistance Min. 1 M
z
Between C01 (female) (58) and C01 (77) Resistance Min. 1 M
z
4
Ground fault in wiring harness
(contact with ground circuit)
1. Turn starting switch to OFF position.
2. Disconnect connector C01 and connect T-adapters to female side.
Between C01 (female) (21) and ground Resistance Min. 1 M
z
Between C01 (female) (40) and ground Resistance Min. 1 M
z
Between C01 (female) (58) and ground Resistance Min. 1 M
z
Between C01 (female) (39) and ground Resistance Min. 1 M
z
5 Defective pump controller
If no failure is found by above checks, pump controller is defective. (Since this
is an internal defect, troubleshooting cannot be performed.)