August 2021 Service and Repair Manual
Type "UXXX" Faults
Part No. 1309020GT GS
™
-30m • 32m • 30 • 32 • 46 • 55 193
Type "UXXX" Faults
DTC
Number
Message on
GCON LCD
Description Possible Causes Failure Mode
U001:
U001:SWITCHFAULT
GCON MAIN FTN EN
Short circuit of the GCON main
function enable switch at system
startup.
• Short circuit of the GCON main function enable switch.
• GCON ECM.
All GCON functions
inhibited.
U002:
U002:SWITCHFAULT
GCON PLAT UP
Short circuit of the GCON up
directional switch at system startup.
• Short circuit of the GCON up directional switch.
• GCON ECM.
All GCON functions
inhibited except
platform down.
U003:
U003:SWITCHFAULT
GCON PLAT DOWN
Short circuit of the GCON down
directional switch at system startup.
• Short circuit of the GCON down directional switch.
• GCON ECM.
All GCON functions
inhibited except
platform up.
U004:
U004:SWITCHFAULT
GCON LCD UP
Short circuit of the GCON LCD scroll
up switch at system startup.
• Short circuit of the GCON LCD scroll up switch.
• GCON ECM.
All GCON LCD menu
functions inhibited.
U005:
U005:SWITCHFAULT
GCON LCD DOWN
Short circuit of the GCON LCD scroll
down switch at system startup.
• Short circuit of the GCON LCD scroll down switch.
• GCON ECM.
All GCON LCD menu
functions inhibited.
U006:
U006:SWITCHFAULT
GCON LCD ENTER
Short circuit of the GCON LCD enter
switch at system startup.
• Short circuit of the GCON LCD enter switch.
• GCON ECM.
All GCON LCD menu
functions inhibited.
U007:
U007:SWITCHFAULT
GCON LCD ESCAPE
Short circuit of the GCON LCD escape
switch at system startup.
• Short circuit of the GCON LCD escape switch.
• GCON ECM.
All GCON LCD menu
functions inhibited.
U014:
U014:SWITCHFAULT
PCON DRIVE EN
Short circuit of the PCON drive enable
switch at system startup.
• Short circuit of the PCON drive enable switch.
• GCON ECM.
All PCON drive and
steer functions inhibited.
U015:
U015:SWITCHFAULT
PCON STEER LEFT
Short circuit of the PCON steer left
switch at system startup.
• Short circuit of the PCON steer left switch.
• GCON ECM.
All PCON drive and
steer functions inhibited.
U016:
U016:SWITCHFAULT
PCON STEER RIGHT
Short circuit of the PCON steer right
switch at system startup.
• Short circuit of the PCON steer right switch.
• GCON ECM.
All PCON drive and
steer functions inhibited.
U017:
U017:SWITCHFAULT
PCON HORN
Short circuit of the PCON horn switch
at system startup.
• Short circuit of the PCON horn switch.
• GCON ECM.
PCON horn switch
function inhibited.
U018:
U018:SWITCHFAULT
PCON LO DRIV SPD
Short circuit of the PCON low drive
speed switch at system startup.
• Short circuit of the PCON low drive speed switch.
• GCON ECM.
The machine is limited
to low drive speed.
U019:
U019:SWITCHFAULT
PCON LO LIFT SPD
Short circuit of the PCON low lift speed
switch at system startup.
• Short circuit of the PCON low lift speed switch.
• GCON ECM.
PCON platform up and
down functions
inhibited.
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