22 PC800, 850-8
SEN00793-02 40 Troubleshooting
E-7 Boom shockless function does not operate normally
Circuit diagram related to boom shockless solenoid
Failure
phenomenon
• The boom shockless function does not oper-
ate normally.
(1) The boom shockless function does not operate.
Relative
information
• When the boom shockless function is turned ON, the solenoid is turned OFF.
Possible causes
and standard
value in normal
state
Cause Standard value in normalcy and references for troubleshooting
1
Defective boom shockless
control switch
(Internal short-circuiting)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
S06 (female)
Boom shockless
control switch
Resistance
Between (2) – (3)
OFF Max. 1 z
ON Min. 1 Mz
2
Short-circuiting of wiring
harness
(Contact with 24 V circuit)
aTurn the engine starting switch OFF for the preparations, and hold it in
the ON position during the troubleshooting.
Wiring harness between S06 (male) (3) – J06 –
J23 – V09 (female) (2) – V10 (female) (2) – D04
(female) (1) and chassis ground
Voltage Max. 1 V
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