Genie GRC-12 Service Manual

REV A
September2016Section 5 • Diagnostics
5 - 10 GRC Part No. 227123
Type "UXXX" Faults
DTC
Number
Message on
GCON LCD
Problem
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
& down functions
inhibited.
U020
U020:SWITCHFAULT
PCON HI LIFT SPD
Short circuit of the PCON high
lift speed switch at system
startup.
• Short circuit of the PCON hi lift speed switch.
• GCON ECM.
PCON platform up
& down functions
inhibited.
U021
U021:SWITCHFAULT
PCON UP
Short circuit of the PCON up
directional switch at system
startup.
• Short circuit of the PCON up directional
switch.
• GCON ECM.
PCON platform up
function inhibited.
U022
U022:SWITCHFAULT
PCON DOWN
Short circuit of the PCON
down directional switch at
system startup.
• Short circuit of the PCON down directional
switch.
• GCON ECM.
PCON platform
down functions
inhibited.
U033
U033:JSTICKFAULT
OUT OF CAL RANGE
PCON drive joystick signal is
outside acceptable calibration
range at system startup.
• PCON drive joystick is not in neutral position
at startup.
• PCON joystick.
• GCON ECM.
All PCON drive and
steer functions
inhibited.
U034
U034:JSTICKFAULT
OUT OF RANGE:HI
Short circuit of the PCON drive
joystick signal to battery
positive at system startup.
• Short circuit of PCON drive joystick signal
circuit.
• PCON joystick.
• GCON ECM.
All PCON drive and
steer functions
inhibited.
U035
U035:JSTICKFAULT
OUT OF RANGE: LO
Short circuit of the PCON drive
joystick signal to battery
negative at system startup.
• Short circuit of PCON drive joystick signal
circuit.
• PCON joystick.
• GCON ECM.
All PCON drive and
steer functions
inhibited.
U036
U036:SWITCHFAULT
GCON + PCON:ON
Mis-wiring or short circuit of
GCON key switch.
• Short circuit in the GCON key switch
harness.
• GCON key switch.
• GCON ECM.
All functions
inhibited.

Genie GRC-12 Specifications

General

Brand	Genie
Model	GRC-12
Category	Lifting Systems
Language	English