Information Contained In Troubleshooting Table - Komatsu WA250-6 Shop Manual

SEN03840-01

Information contained in troubleshooting table

Action code Failure code
Monitor
Monitor display
display
Contents of
State where the monitor panel or controller detects the trouble
trouble
Action of Action taken by machine monitor or controller to protect system or devices when engine con-
controller troller detects trouble
Problem that
Problem that appears on machine as result of action taken by machine monitor or controller
appears on
(shown above)
machine
Related
Information related to detected trouble or troubleshooting
information
1
2
Possible causes
Possible causes of trouble
and standard
is assumed to be detected
value in normal
(The order number indicates
state
a serial number, not a priority
sequence.)
3
4
8
40-200
Trouble Problem that appears on machine
Cause
<Described contents>
• Standard value in normal state to judge assumed cause
(good or not)
• Remarks required to judge whether the cause is good
<Phenomenon of defective wiring harness>
• Disconnection in wiring
The connector connection is defective or the wiring harness
is disconnected.
• Grounding fault
A harness not connected to ground (earth) circuit comes
into contact with the ground (earth) circuit.
• Hot short circuit
A harness not connected to the power (24 V) circuit comes
into contact with the power (24 V) circuit.
• Short circuit
A harnesses of an independent circuit abnormally comes
into contact with one of another circuit.
<Notes on troubleshooting>
(1) Method of indicating connector number and handling T-
(2) Pin number description sequence and tester lead handling
200 General information on troubleshooting

Information contained in troubleshooting table

Standard value in normal state/Remarks on troubleshooting
branch
For troubleshooting, insert or connect T-branch adapter
as shown below unless especially specified.
• When "male" or "female" is not indicated for a con-
nector number, disconnect the connector, and insert
the T-branch adapter in both the male and female.
• When "male" and "female" is indicated for a connec-
tor number, disconnect the connector, and insert the
T-branch adapter in only either the male or female.
For troubleshooting, connect the plus (+) and minus (–)
leads as shown below unless especially specified.
• Connect the plus (+) lead to a pin or harness indi-
cated in the front.
• Connect the minus (–) lead to a pin or harness indi-
cated in the rear.
1
WA250, 250PZ-6