Failure Code [Da22Kk] Pump Solenoid Power Low Error - Komatsu PC200-8M0 Shop Manual

SEN06135-00

Failure code [DA22KK] Pump Solenoid Power Low Error

Action
Failure code
level
L03 DA22KK
q
Detail of failure Power supply supply voltage of controller for driving solenoids is below 20 V.
q
Stops generation of failure codes (open circuit and short circuit) for all solenoid systems while this
Action of con-
failure code is active.
troller
q
If cause of failure disappears, machine becomes normal by itself.
Problem on
q
No solenoid valve is energized properly, so machine does not work properly.
machine
q
As T-adapter for pump controller connector is "socket-type box", operating voltage cannot be mea-
Related infor- sured at pump controller connector.
q
mation If failure code [D110KB] is displayed, troubleshoot it first.
q
Method of reproducing failure code: Turn starting switch to ON position.
Cause
Defective fusible link F04 or fuse
1
No.2 of fuse box F01
2 Improper battery voltage
3 Defective wiring harness
4 Open circuit in wiring harness
Ground fault in wiring harness
5
(contact with ground circuit)
6 Defective pump controller
12
40-303
Failure code [DA22KK] Pump Solenoid Power Low Error
Pump Solenoid Power supply voltage Low Error
Failure
(input) (Pump controller system)
Procedure, measuring location, criteria and remarks
If fusible link or fuse is blown, circuit probably has ground fault. (See Cause 5.)
1. Turn starting switch to OFF position.
2. After measuring voltage, measure it again when starting engine.
Between battery (+) and ground
1. Turn starting switch to OFF position and disconnect ground cable.
2. Disconnect connector C02 and connect T-adapters to female side.
3. Connect battery ground cable and turn starting switch to ON position.
Between each of (116), (118) and (121) of C02 and
ground
a If no failure is found by check on cause 3, this check is not required.
1. Turn starting switch to OFF position and disconnect ground cable.
2. Remove fusible link F04 and fuse (2) in fuse box F01.
3. Disconnect connector C02 and connect T-adapters to female side.
Between each of (116), (118) and (121) of C02
(female) and F01-2
Between F01-1A and F04 (male) (2)
Between F04 (male) (1) and terminal R03
a If no failure is found by check on cause 3, this check is not required.
1. Turn starting switch to OFF position and disconnect ground cable.
2. Remove fusible link F04 and fuse No. 2 of fuse box F01.
3. Disconnect connector C02 and connect T-adapters to female side.
Between ground and each of (116), (118) and (121)
of C02 (female) or F01-2
Between F01-1A or F04 (male) (2) and ground
Between F04 (male) (1) or terminal R03 and ground Resistance Min. 1 Mz
If no failure is found by above checks, pump controller is defective. (Since this
is an internal defect, troubleshooting cannot be performed.)
303 Troubleshooting by failure code, Part 3
Voltage
Voltage
Resistance
Resistance
Resistance
Resistance Min. 1 Mz
Resistance Min. 1 Mz
PC200, 200LC, 220, 220LC-8M0
20 to 30 V
20 to 30 V
Max. 1 z
Max. 1 z
Max. 1 z