Information In Troubleshooting Table - Komatsu 114E-3 Series Shop Manual

SEN00457-01

Information in troubleshooting table

a The following information is summarized in the troubleshooting table and the related electrical circuit
diagram. Before carrying out troubleshooting, understand that information fully.
Error code Failure code
Display on
Display on
applicable
INSITE
machine
Contents of
Contents of trouble detected by engine controller
trouble
Action of Action taken by engine controller to protect system or devices when engine controller detects
controller trouble
Problem that
appears Problem that appears on engine as result of action taken by engine controller (shown above)
on machine
Related infor-
Information related to detected trouble or troubleshooting
mation
1
2
Possible
Possible causes of trouble
causes and
(Given numbers are refer-
standard value
ence numbers, which do not
in normal state
indicate priority)
3
4
6
Trouble Problem that appears on engine
Causes
<Contents of description>
• Standard value in normal state to judge possible causes
• Remarks on judgment
<Troubles in wiring harness>
• Disconnection
Connector is connected imperfectly or wiring harness is
broken.
• Ground fault
Wiring harness which is not connected to chassis ground
circuit is in contact with chassis ground circuit.
• Hot short
Wiring harness which is not connected to power source (24
V) circuit is in contact with power source (24 V) circuit.
• Short circuit
Independent wiring harnesses are in contact with each
other abnormally.
<Precautions for troubleshooting>
(1) Method of indicating connector No. and handling of T-
adapter
Insert or connect T-adapter as explained below for trouble-
shooting, unless otherwise specified.
• If connector No. has no marks of "male" and "female", dis-
connect connector and insert T-adapters in both male side
and female side.
• If connector No. has marks of "male" and "female", discon-
nect connector and connect T-adapter to only male side or
female side.
(2) Entry order of pin Nos. and handling of tester leads
Connect positive (+) lead and negative (–) lead of tester as
explained below for troubleshooting, unless otherwise
specified.
• Connect positive (+) lead to pin No. or wiring harness
entered on front side.
• Connect negative (–) lead to pin No. or wiring harness
entered on rear side.
Standard value in normal state/Remarks on troubleshooting
40 Troubleshooting
1
114E-3 Series