Failure Code [Ab00Ke] Charge Voltage Low; Troubleshooting - Komatsu Galeo PC138US-8 Shop Manual

SEN02463-01

Failure code [AB00KE] Charge voltage low

User code Failure code
— AB00KE
Contents of
• While engine is running, signal circuit of alternator detected low charge voltage (below 7.8 V).
trouble
Action of • Displays charge level monitor on machine monitor.
machine monitor • Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on • If machine is operated as it is, battery may not be charged.
machine
Related • Signal voltage of alternator can be checked with monitoring function. (Code: 04300 Charge voltage)
information • Method of reproducing failure code: Start engine.
Possible causes Defective charge of alterna-
1
and standard tor (when system is normal)
value in normal
state
Defective charge level moni-
2
tor
6
Charge voltage low
Trouble
(Machine monitor system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then start engine and carry
Between (1) – chas-
If cause 1 is not detected, charge level monitor system may be
defective. Carry out troubleshooting for "E-7 Caution item flashes
while engine is running" in E-mode.
out troubleshooting.
E12 (male) Engine speed
Min. medium speed
sis ground

40 Troubleshooting

1
Voltage
27.5 – 29.5 V
PC138US, USLC-8