TM 5-3805-281-24-1
Diagnostic Information
Part Name
Dig Pressure Switch
Boom Up Pressure
Arm In Pressure Sensor
Learning Switch
Switch
Operational
Senses when a dig function
Senses boom up pilot
Senses arm in pilot
To start engine speed
Function
is actuated.
pressure signal.
pressure signal.
learning function.
Control Problems
No electrical signal sent to
No electrical signal sent to
No electrical signal sent to
Engine speed learning
engine and pump controller.
engine and pump controller.
engine and pump controller.
function does not operate.
Machine Symptoms
Engine speed does not
No arm in regenerative
No arm in regenerative
For an open circuit, engine
increase from auto-idle
function during boom up
function during boom up
speed control system
speed when a dig function
and arm in combined
and arm in combined
operates normally. Engine
actuated.
operation. When beginning
operation. HP (high power)
speed learning procedure
a ground leveling operation,
mode does not function.
cannot be actuated. For a
bucket is slightly lowered
Arm speed slow when
short circuit, learning
into the ground.
control is actuated when
key switch is turned ON.
Laptop Computer
--
--
06 Service code is
--
Self-Diagnostic
displayed.
Function
Laptop Computer
Monitor No. 20, Pressure
Monitor No. 20, Pressure
Monitor No. 5, Arm roll-in
Monitor No. 28, Engine
Monitoring Function
switch.
switch.
pilot pressure.
learning control.
Harness Check
--
--
--
--
Notes
Located at swing motor.
Switch needed for arm in
Sensor needed for HP
--
regenerative operation.
mode and arm in
regenerative operation.
Description of
See Auto-Idle Mode Speed
See Arm Regenerative
See Arm Regenerative
See Engine Speed
Operation
Control Circuit Operation in
Valve Operation in Group
Valve Operation in Group
Learning Control Circuit
Group 9010-05.
9025-05.
9025-05 and HP (High
Operation in Group
Power) Mode Speed
9010-05.
Control Circuit Operation in
Group 9010-05.
9025
15
5
Continued on next page
CED,TX08227,3177
1904JUN984/9
6-112
