Hyundai HL955 Manual page 127

Fault code Meaning of the fault code
(Hex) possible reason for fault detection
BB
Slippage at converter lockup clutch
TCU calculates a differential speed at
closed converter lockup clutch. If this
calculated value is out of range, TCU
interprets this as slipping clutch
·Low pressure at converter lockup clutch
·Low main pressure
·Wrong signal at engine speed sensor
· Wrong signal at turbine speed sensor
· Wrong size of the sensor gap
· Clutch is defective
C0
Engine torque or engine power overload
TCU calculates an engine torque or
e n g i n e p o w e r a b o ve t h e d e f i n e d
thresholds
C1
Transmission output torque overload
TCU calculates an transmission output
torque above the defined threshold
C2
Transmission input torque overload
TCU calculates an transmission input
torque above the defined threshold
C3
Overtemp converter output
TCU measured a oil temperature at the
converter output that is the allowed
threshold
C4
S. C. t o g r o u n d a t j oy s t i ck s t a t u s
indicator
TCU detected a wrong voltage at the
output pin, that looks like a S.C. to vehicle
ground
· Cable is defective and is contacted to
vehicle ground
· Joystick status indicator has an internal
defect
· Connector pin is contacted to vehicle
ground
C5
S.C. to battery voltage at joystick status
indicator
TCU detected a wrong voltage at the
output pin, that looks like a S.C. to battery
voltage
· Cable is defective and is contacted to
battery voltage
· Joystick status indicator has an internal
defect
· Connector pin is contacted to battery
voltage
※ Some fault codes are not applied to this machine.
Reaction of the TCU
No reaction
OP mode : Normal
OP mode : Normal
OP mode : Normal
programmable :
No reaction or shift to
neutral
OP mode : Normal
No reaction
OP mode : Normal
No reaction
OP mode : Normal
No reaction
OP mode : Normal
3-71
Possible steps to repair
·
Check pressure at converter lockup
clutch
·
Check main pressure in the system
·
Check sensor gap at engine speed
sensor
·
Check sensor gap at turbine speed
sensor
·
Check signal at engine speed
sensor
·
Check signal at turbine speed
sensor
·
Replace clutch
·
Cool down machine
·
Check oil level
·
Check temperature sensor
·
Check the cable from TCU to
joystick status indicator
·
Check the connectors from joystick
status indicator to TCU
·
Check the resistance* of joystick
status indicator
* See page 3-74
·
Check the cable from TCU to
joystick status indicator
·
Check the connectors from joystick
status indicator to TCU
·
Check the resistance* of joystick
status indicator
* See page 3-74