March 2021
Service and Repair Manual
Type "UXXX" Faults
Part No. 1272217GT
GS
™
-30 • 32 • 46 • 47
171
Type "UXXX" Faults
DTC
Number
Message on
GCON LCD
Description
Possible Causes
Failure Mode
U001:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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:
GS30,
GS32,
GS46 &
GS47
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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