Troubleshooting
50940411/G0219 188 Printed in U.S.A.
6
(2)
(4)
Pump left sensor
out-of-range fault
Rear pump swash sensor does
not follow command to solenoid
valves. Failure of one or both of
the rear solenoid valves, wiring
fault or rear sensor ground wire
shorted or open. May be
accompanied by codes 2 and/or 4.
Both pumps will be
disabled at first. Then
both pumps could be run
in open loop mode (See
“Travel Drive Error
Condition Operation
(Limp Mode)” on
page 94).
Check rear sensor and rear
solenoid valve wiring and
connectors.
Check correct harness connections
between front and rear sensors and
forward and reverse solenoid
valves.
Check controller2 wiring and
connectors.
Check resistance of rear solenoid
valves. Refer to the Service
Manual.
Replace front sensor or rear
solenoid valves.
7
Left forward drive
pump solenoid
wiring or coil fault
Left top solenoid valve coil and/or
wiring connection is shorted or
open.
Both pumps will be
disabled at first. Then
both pumps could be run
in limp mode with no
forward movement on left
track.
Check left/top solenoid valve coil
wiring and connector.
Check resistance of left/top
solenoid valve coil. Refer to the
Service Manual.
Check controller2 connector and
wiring.
8
Left reverse drive
pump solenoid
wiring or coil fault
Left bottom solenoid valve coil
and/or wire connection is open or
short.
Both pumps will be
disabled at first. Then
both pumps could be run
in limp mode with no
reverse movement on left
track.
Check left/bottom solenoid valve
coil wiring and connector.
Check resistance of left/bottom
solenoid valve coil. Refer to the
Service Manual.
Check controller2 connector and
wiring.
9
Right reverse drive
pump solenoid
wiring or coil fault
Right top solenoid valve coil and/
or wire connection is open or short.
Both pumps will be
disabled at first. Then
both pumps could be run
in limp mode with no
reverse movement on
right track.
Check right/top solenoid valve coil
wiring and connector.
Check resistance of right/top
solenoid valve coil. Refer to the
Service Manual.
Check controller2 connector and
wiring.
10
Right forward drive
pump solenoid
wiring or coil fault
Right bottom solenoid valve coil
and/or wire connection is open or
short.
Both pumps will be
disabled at first. Then
both pumps could be run
in limp mode with no
forward movement on
right track.
Check right/bottom solenoid valve
coil wiring and connector.
Check resistance of right/bottom
solenoid valve coil. Refer to the
Service Manual.
Check controller2 connector and
wiring.
Table 57: Drive and Valve Error Codes
Error
Code
Error Description Fault Cause Fault Action Corrective Action