One-Touch Power Maximizing Function Does Not Operate Properly - Komatsu PC200-8M0 Shop Manual

SEN06138-00
E-22 One-touch power maximizing function does not operate properly
1) When L.H. knob switch is pressed, one-touch power max. monitor is not displayed.
Failure
2) When L.H. knob switch is pressed, work equipment power is not increased.
q
Related information
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Cause
1 Defective machine monitor
2 Defective fuse No. 9
Defective left knob switch
3
(Internal open circuit)
Open circuit or ground fault in wir-
4
ing harness
Open circuit in wiring harness
5 (wire breakage or defective con-
tact of connector)
Ground fault in wiring harness
6
(contact with ground circuit)
7 Defective pump controller
42
40-400
E-22 One-touch power maximizing function does not operate properly
One-touch power max. function does not operate when selected working mode is not power
mode (P) or economy mode (E).
Signal of L.H. knob switch can be checked with monitoring function.
(Code: 02200 Switch Input 1)
When L.H. knob switch is pressed, if work equipment power is increased but
one-touch power max. monitor is not displayed on machine monitor, machine
monitor may be defective. (Since this is an internal defect, troubleshooting can-
not be performed.)
If fuse is blown, circuit probably has grounding fault. (See Cause 6.)
1. Turn starting switch to OFF position.
2. Disconnect connector S11, and connect T-adapters to male side.
Between S11 (female) (1)
and (2)
1. Turn starting switch to OFF position.
2. Disconnect connector C01 and connect T-adapters to female side.
3. Turn starting switch to ON position.
a Ignore displayed failure code.
Between C01 (female)
(41) and ground
a If no failure is found by check on cause 4, this check is not required.
1. Turn starting switch to OFF position.
2. Remove fuse F01-9.
3. Disconnect connectors C01 and S11 and connect T-adapters to each female
side.
Between F01-9 and S11 (female) (1)
Between S11 (female) (2) and C01 (female) (41)
a If no failure is found by check on cause 4, this check is not required.
1. Turn starting switch to OFF position.
2. Remove fuse F01-9.
3. Disconnect connectors C01 and S11 and connect T-adapters to female side
of S11.
Between F01-9 or S11 (female) (1) and ground
Between S11 (female) (2) or C01 (female) (41) and
ground
If no failure is found by above checks, the pump controller is defective. (Since
this is an internal defect, troubleshooting cannot be performed.)
400 Troubleshooting of electrical system (E-mode)
Procedure, measuring location, criteria and remarks
L.H. knob switch:
Released
L.H. knob switch:
Pressed
L.H. knob switch:
Released
L.H. knob switch:
Pressed
Resistance Min. 1 Mz
Max. 1 z
Resistance
Voltage Max. 1 V
20 to 30 z
Voltage
Max. 1 z
Resistance
Max. 1 z
Resistance
Resistance Min. 1 Mz
Resistance Min. 1 Mz
PC200, 200LC, 220, 220LC-8M0