© Mar. 2022 6-2 GTTZ10EJ Maintenance Manual
TROUBLESHOOTING AND SCHEMATICS
Fault
Code
Description
Function Restricted Solution
36
Low battery charge
alarm
Drive speed restricted
Low battery charge alarm: the battery level is
running low, please charge the battery.
37
Battery fully depleted
All functions restricted
Battery depleted: the battery is switched into the
sleep mode, move the joystick or press the keys
on ECU to exit the sleep mode
38
Pothole protective
plate retract valve fault
All functions restricted
Pothole protective plate retract valve fault: check
the coil wiring, if correctly wired, check whether
the coil is open or short circuited.
39
Pothole protective
plate extend valve fault
All functions restricted
Pothole protective plate extend valve fault: check
the coil wiring, if correctly wired, check whether
the coil is open or short circuited.
42 Steer left button fault
Alarm allowed only
Steer left button pressed before startup: the
button on joystick may be pressed, otherwise
replace the joystick or PCU.
43
Steer right button fault Alarm allowed only
Steer right button pressed before startup: the
button on joystick may be pressed, otherwise
replace the joystick or PCU.
46 Enable button fault
Platform operation
restricted
Enable button pressed before startup: check
whether the enable button is pressed, and check
the neutral setting, if no problem, replace the
joystick or PCU.
47
Joystick not returned to
neutral
Drive speed restricted
Joystick not returned to neutral: ensure the
joystick is returned to the neutral (vertical)
position, and check the neutral setting, if no
problem, replace the joystick or PCU.
52
Turntable rotate right
valve fault
Lift and drive functions
restricted
Turntable rotate right valve fault: check the coil
wiring, if correctly wired, check whether the coil is
open or short circuited.
53
Turntable rotate left
valve fault
Lift and drive functions
restricted
Turntable rotate left valve fault: check the coil
wiring, if correctly wired, check whether the coil is
open or short circuited.
54
Mast up valve fault
Lift and drive functions
restricted
Mast up valve fault: check the coil wiring, if
correctly wired, check whether the coil is open or
short circuited.
55 Mast down valve fault
Lift and drive functions
restricted
Mast down valve fault: check the coil wiring, if
correctly wired, check whether the coil is open or
short circuited.
56
Front wheel steer right
valve fault
Lift and drive functions
restricted
Front wheel steer right valve fault: check the coil
wiring, if correctly wired, check whether the coil is
open or short circuited.
57
Front wheel steer left
valve fault
Lift and drive functions
restricted
Front wheel steer left valve fault: check the coil
wiring, if correctly wired, check whether the coil is
open or short circuited.
58
Jib up valve fault
Lift and drive functions
restricted
Jib up valve fault: check the coil wiring, if correctly
wired, check whether the coil is open or short
circuited.