November 2016
Service and Repair Manual
Fault Codes
Part No. 1272220GT
GS-2669 DC • GS-3369 DC • GS-4069 DC
107
Type "UXXX" Faults
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
up.
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
down.
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.
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.