September 2016
Service and Repair Manual
Fault Codes
Part No. 1272222
GS-84 • GS-90
115
Control System F ault Cod es
Control Syst em F ault C odes
ID
System Ready
LED Condition
Result
Solution
1
INTERNAL ECU
FAULT
Red Internal ECM error.
System shutdown. Replace ECM.
2
PLATFORM ECU
FAULT
Red Platform/ECM
communication error.
System shutdown. Troubleshoot control cable OR
troubleshoot platform controls.
20
CHASSIS START
SW FAULT
Red Engine start button fault at
ground controls.
Engine will not
start.
Replace ECM.
21
CHASSIS CHOKE
SW FAULT
Red Starting aid button fault at
ground controls.
Starting aid
disabled.
Replace ECM.
22
CHASSIS UP SW
FAULT
Red Up switch fault at ground
controls.
Platform up
function inhibited.
Replace ECM.
23
CHASSIS LIFT
SW FAULT
Red Platform up/down enable
button fault at ground
controls.
Platform up/down
functions inhibited.
Replace ECM.
24
DOWN SW
FAULT
Red Down switch fault at ground
controls.
Platform down
function inhibited.
Replace ECM.
25
LEFT TURN SW
FAULT
Red Left turn switch fault.
Malfunctioning
steer left
microswitch.
Troubleshoot steer left
microswitch.
26
RIGHT TURN SW
FAULT
Red Right turn switch fault.
Malfunctioning
steer right
microswitch.
Troubleshoot steer right
microswitch.
27
DRIVE ENABLE
SW FLT
Red Function enable switch on
joystick is activated when
machine is turned on.
Machine functions
disabled.
Release function enable switch
on joystick before power up OR
replace joystick.
28
OFF NEUTRAL
DRIVE JOYSTICK
Red Drive joystick off neutral
when machine is turned on.
Machine functions
disabled.
Release joystick before power
up OR replace joystick.
29
PLATFORM LIFT
SW FAULT
Red Lift enable button fault at the
platform controls.
Platform up/down
functions inhibited.
Troubleshoot button OR replace
printed circuit board at platform
controls.
30
OFF NEUTRAL
LIFT JOYSTICK
Red Up/down switch off neutral. Platform up/down
functions inhibited.
Replace up/down switch at
platform controls.
31
PLATFORM
CHOKE SW
FAULT
Red Starting aid fault at the
platform controls.
Starting aid
disabled.
Troubleshoot button OR replace
printed circuit board at platform
controls.
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