PC58UU-3 20-323
TROUBLESHOOTING
E-8 Error code [51] (Trouble in boom RAISE stop solenoid system) 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-8 Related electrical circuit diagram
Cause Remedy
• 3 – 15z
• Between F11 (2) – chassis
ground: Min. 1 Mz
• Turn starting switch OFF
• Disconnect F11
1
Is resistance between F11 (male) (1) –
(2) normal and is wiring harness insu-
lated from chassis ground?
NO
Defective boom RAISE sole-
noid valve
Replace
YES
• Turn starting switch OFF
• Disconnect G3 and F11
• Measure on G3 (female) side
in diode range (Note)
2
Disconnection, defective con-
tact, or short circuit with
chassis ground in wiring har-
ness between G3 (female)
(26) – F11 (female) (2)
Is there continuity between G3 (female)
(26) – F11 (female) (2) and is wiring
harness insulated from chassis ground?
NO
Repair or
replace
YES
• Between wiring harness Max.
10 z
• Between wiring harness and
chassis ground: Min. 1Mz
• Turn starting switch OFF
• Disconnect G3 and F11
3
Disconnection, defective con-
tact, or short circuit with
chassis ground in wiring har-
ness between G3 (female)
(23) – F11 (female) (1)
Repair or
replace
Is resistance between G3 (female) (23)
and F11 (female) (1) normal, and is wir-
ing harness insulated from chassis
ground?
YES
Defective controller Replace
NO
E-8
(6)
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