Failure Code [B@Bazk] Eng. Oil Level Low - Komatsu Galeo PC800-8 Shop Manual

40 Troubleshooting

Failure code [B@BAZK] Eng. Oil Level Low

Action code Failure code
— B@BAZK
Contents of • The signal circuit of the engine oil level switch is opened (disconnected from grounding) while the
trouble engine is stopped.
Action of
• None in particular.
controller
Problem that
appears on • If machine is operated as it is, engine may be damaged.
machine
• If the engine oil level monitor on the machine monitor lights up in red while the engine is running, this
Related failure code is recorded.
information • Input from the engine oil level switch (ON or OFF) can be checked in the monitoring function.
(Code No. 04501: Monitor input 2)
Lowering of engine oil level
1
(when system is normal)
Defective engine oil level
2 switch
(Internal disconnection)
Possible causes
and standard
Disconnection in wiring har-
value in normal
ness
state
3 (Disconnection in wiring or
defective contact in connec-
tor)
4 Defective machine monitor
Circuit diagram related to engine oil level switch
PC800, 850-8
Eng. Oil Level Low
Trouble
(Machine monitor system)
Cause Standard value in normal state/Remarks on troubleshooting
aCheck the engine oil level and add new oil.
(If this phenomenon frequently occurs, investigate the cause.)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
P44 (male)
Between (1) – chassis
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CM02 (female) (8) –
P44 (female) (1)
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Between (8) –
chassis ground
Engine oil level
Normal level
ground
Below normal level
CM02 Engine oil level
Normal level
Below normal level
SEN00790-02
Resistance
Max. 1 z
Min. 1 Mz
Resis-
Max. 1 z
tance
Voltage
Max. 1 V
20 – 30 V
9