Terex PT100G Forestry, Service Manual

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Propel
Display reads: Fault results in: Possible causes: Solution
Invalid propel mode
selection
Propel disabled Valid propel mode not selected. Select valid
mode (Accomplished through the display in config
menu) and cycle power by turning the key off then
back on
Select valid mode and cycle power by turning the
key off then back on
Loss of communications
between Main Controller
and Display
Display disabled Blown fuse, faulty connections or wires between
Main Controller and Display.
Restore communications, then cycle power by
turning the key off then back on
Loss of communications
between Main Controller
and Engine
Loss of engine feedback on Display Blown fuse, faulty connections or wires between
Main Controller and Engine.
Restore communications, then cycle power by
turning the key off then back on
Loss of communications
between Main Controller
and Left joystick
ISO-mode: Drive Disabled
H-mode: Drive and Boom disabled
Faulty connections or wires between Main
Controller and Left Joystick.
Restore communications, then cycle power by
turning the key off then back on
Loss of communications
between Main Controller
and Right Joystick
ISO-mode: Boom and Bucket Disabled
H-mode: Drive disabled
Faulty connections or wires between Main
Controller and Right Joystick.
Restore communications, then cycle power by
turning the key off then back on
Loss of communications
between Main Controller
and Keypad
Drive disabled (brake applied), Auxiliary
Hydraulics disabled
Faulty connections or wires between Main
Controller and Keypad.
Restore communications, then cycle power by
turning the key off then back on
Battery Voltage
above upper limit
Display reads: "N/A" for battery voltage Alternator/regulator fault. Repair or replace. Once battery voltage is back
within range, the fault will automatically clear.
Battery Voltage
below lower limit
Display reads: "N/A" for battery voltage Battery faulty, Faulty or damaged alternator or
connections to and from battery, Blown alternator
fuse or alt diode.
Once battery voltage is back within range, the
fault will automatically clear.
Sensor Power Fault -
Voltage above
upper limit
Low flow rocker disabled There is a problem with the main controller. Manually check voltages at connector pins. If
confirmed high, replace main controller.
Sensor Power Fault -
Voltage below
lower limit
Low flow rocker disabled There is a problem with the main controller. Manually check voltages at connector pins. If
confirmed low, replace main controller.
Lap Bar Switch
Fault (both inputs off)
Propel disabled Switch faulty, wiring connection faulty, switch out
of adjustment.
Restore connections, adjust or replace switches,
then cycle power by turning the key off then back
on
Lap Bar Switch
Fault (both inputs on)
Propel disabled Switch faulty, wiring connection faulty, switch out
of adjustment.
Restore connections, adjust or replace switches,
then cycle power by turning the key off then back
on
Invalid Keypad installed Propel disabled (Brake Applied) Incorrect keypad part number installed at recent
service, keypad fault
Install correct keypad for your machine.
Left Joystick X-Axis
outside of specified limits
ISO mode: Propel disabled (ramp to stop) Joystick Faulty Replace joystick, then cycle power.
H mode: Boom disabled Joystick Faulty Replace joystick, then cycle power.
Left Joystick Y-Axis
outside of specified
limits
ISO & H: Propel disabled (ramp to stop) Joystick Faulty Replace joystick, then cycle power.
Right Joystick Y-Axis
outside of specified
ISO Mode: Boom disabled Joystick Faulty Replace joystick, then cycle power.
H mode: Propel disabled Joystick Faulty Replace joystick, then cycle power.
Hydraulic Oil Temperature
above upper limit
Derate Active
Machine de-rates performance (propel) to 50% of
maximum
Low hydraulic oil. Machine or attachment quick
coupler fault. Coolers plugged or damaged,
improper attachment, damaged or missing fan,
fan belt, fan brush ring, or shroud. Faulty cooler
bypass relief (s) are also a possibility.
Check hydraulic oil. Inspect quick couplers.
Clean coolers and engine compartment, ensure
proper fan and belt condition and operation. Cool
machine until oil temp is less than 210 deg F. If
the above solutions prove inneffective, inspect
cooler bypass relief valves. Repair or replace as
necessary
Temp Sensor resistance
above upper limit
Hydraulic oil temperature display disabled Faulty Sensor Replace temp sender, then cycle power
Temp Sensor resistance
below lower limit
Faulty Sensor Replace temp sender, then cycle power
Fuel Sender voltage
above upper limit
Display "N/A" for fuel level Faulty Sensor Replace sensor, then cycle power
Fuel Sender voltage
below lower limit
Faulty Sensor Replace sensor, then cycle power
Left Forward Threshold
not calibrated
Propel automatically limited to default threshold
parameters
If th h ld 4000 li it t 4000 If 6000 li it
Threshold needs to be calibrated Perform threshold calibration procedure
Left Reverse Threshold
not calibrated
Propel automatically limited to default threshold
parameters
If threshold < 4000, limit to 4000, If > 6000, limit
to 6000
Threshold needs to be calibrated Perform threshold calibration procedure
18-4
Compact Track Loader
18. Troubleshooting
Control System Troubleshooting
Propel