Failure Code [Aa10Nx] Aircleaner Clogging - Komatsu Galeo PC800-8 Shop Manual

SEN00790-02
Troubleshooting by failure code (Display of code), Part 1

Failure code [AA10NX] Aircleaner Clogging

Action code Failure code
— AA10NX
Contents of • While engine was running, signal circuit of air cleaner clogging switch was opened (disconnected with
trouble GND).
Action of
• None in particular.
controller
Problem that
appears on • If machine is operated as it is, engine may be damaged.
machine
• If an air cleaner clogging monitor appears on the machine monitor lights up in red while the engine is
Related running, this failure code will be recorded.
information • Input from the air cleaner clogging switch (ON/OFF) can be checked with monitoring function.
(Code 04501: Monitor Input 1)
Cause
Clogging of air cleaner
1
(when system is normal)
Defective air cleaner clog-
2 ging switch (internal dis-
connection)
Possible causes
and standard
Disconnection in wiring har-
value in normal
ness
state
3 (Disconnection in wiring or
defective contact in con-
nector)
4 Defective machine monitor
4
Aircleaner Clogging
Trouble
(Machine monitor system)
Standard value in normal state/Remarks on troubleshooting
aCheck the air cleaner for clogging and then clean or replace it if
clogged.
aTurn the engine starting switch OFF for the preparations, and hold it in the
OFF position or keep the engine running during the troubleshooting.
P23 (male)
Between (1) – (2)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness between CM02 (female) (5) –
P23 (female) (1)
Wiring harness between P23 (female) (2) – J25
– chassis ground
aTurn the engine starting switch OFF for the preparations, and hold it in the
OFF position or keep the engine running during the troubleshooting.
CM02
Between (5) –
chassis ground
40 Troubleshooting
Air cleaner
Value in normal state
Value when clogged
Resis-
tance
Resis-
tance
Air cleaner
Value in normal state
Value when clogged
Resistance
Max. 1 z
Min. 1 Mz
Max. 1 z
Max. 1 z
Voltage
Max. 1 V
20 – 30 V
PC800, 850-8