Komatsu PC58UU-3 User Manual

PC58UU-3 20-321
TROUBLESHOOTING
E-6 Error code [42] (Trouble in LEFT offset stop solenoid system) is
displayed
a If the wiring harness between the controller and solenoid is shorted to the chassis ground, it is displayed
during operation. If the wiring harness is disconnected, however, the work equipment stops without display-
ing the error code.
In this case, turn the starting switch to the OFF position and to the ON position again, and the error code is
displayed.
Note: If an ordinary tester is set in the diode range, the voltage of the battery in itself is indicated. When a har-
ness containing a diode is checked with this tester, [if this voltage does not change, there is not continu-
ity], and [if this voltage changes, there is continuity].
E-6 Related electrical circuit diagram
Cause Remedy
• 5 – 25z
• Between F9 (2) – chassis
ground: Min. 1 Mz
• Turn starting switch OFF
• Disconnect F9
1
Is resistance between F9 (male) (1) –
(2) normal and is wiring harness insu-
lated from chassis ground?
NO
Defective LEFT offset sole-
noid
Replace
YES
• Turn starting switch OFF
• Disconnect G3 and F9
• Measure on G3 (female) side
in diode range (Note)
2
Disconnection or defective
contact in wiring harness
between G3 (female) (15) –
F9 (female) (2)
Is there continuity between G3 (female)
(15) – F9 (female) (2) and is wiring har-
ness insulated from chassis ground?
NO
Repair or
replace
YES
• Max. 10 W
• Turn starting switch OFF
• Disconnect F9
3
Disconnection, defective con-
tact, or short circuit with
chassis ground in wiring har-
ness between F9 (female) (1)
– G3 (3)
Is resistance between F9 (female) (1)
and G3 (3) normal?
NO
Repair or
replace
YES
Defective controller Replace
E-6
(6)

Komatsu PC58UU-3 Specifications

General

Brand	Komatsu
Model	PC58UU-3
Category	Construction Equipment
Language	English