Failure Code [Dwa2Ka] Service Sol Discon - Komatsu PC210-8 Shop Manual

UEN00242-01

Failure code [DWA2KA] Service Sol Discon

User code Failure code
— DWA2KA
Contents of
• When output to service solenoid is turned OFF, disconnection was detected in circuit.
trouble
Action of • None in particular. (Since no current flows, solenoid does not operate.)
controller
• If cause of failure disappears, system resets itself.
Problem that
appears on
• Hydraulic circuit for attachment does not change to single operation circuit.
machine
• Operating condition of service solenoid can be checked with monitoring function.
Related infor- (Code: 02301 Solenoid 2)
mation
• Method of reproducing failure code: Turn starting switch ON + Set machine in mode other than
breaker mode (B).
Defective service solenoid
1
(Internal disconnection)
Possible causes
Disconnection in wiring har-
and standard
ness (Disconnection in wiring
value in normal
2
or defective contact in con-
state
nector)
3 Defective pump controller
Circuit diagram related to service solenoid
42
Service solenoid disconnection
Trouble
(Pump controller system)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (86) –
V06 (female) (1)
Wiring harness between V06 (female) (2) –
chassis ground (T09)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (86) – chassis ground
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V06 (male)
Between (1) – (2)
without turning starting switch ON.
without turning starting switch ON.
C02 (female)
40 Troubleshooting
1
Resistance
20 – 60 z
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resistance
20 – 60 z
PC210, 230, 240-8