Hyundai HL955 Manual page 126

Fault code Meaning of the fault code
(Hex) possible reason for fault detection
B3
Slippage at clutch K3
TCU calculates a differential speed at
closed clutch K3. If this calculated value
is out of range, TCU interprets this as
slipping clutch
·Low pressure at clutch K3
· Low main pressure
· Wrong signal at internal speed sensor
· Wrong signal at output speed sensor
·Wrong size of the sensor gap
·Clutch is defective
B4
Slippage at clutch K4
TCU calculates a differential speed at
closed clutch K4. If this calculated value
is out of range, TCU interprets this as
slipping clutch
·Low pressure at clutch K4
· Low main pressure
· Wrong signal at internal speed sensor
· Wrong signal at turbine speed sensor
· Wrong size of the sensor gap
·Clutch is defective
B5
Slippage at clutch KV
TCU calculates a differential speed at
closed clutch KV. If this calculated value
is out of range, TCU interprets this as
slipping clutch
·Low pressure at clutch KV
· Low main pressure
· Wrong signal at internal speed sensor
· Wrong signal at turbine speed sensor
· Wrong size of the sensor gap
· Clutch is defective
B6
Slippage at clutch KR
TCU calculates a differential speed at
closed clutch KR. If this calculated value
is out of range, TCU interprets this as
slipping clutch
·Low pressure at clutch KR
· Low main pressure
·Wrong signal at internal speed sensor
·Wrong signal at turbine speed sensor
·Wrong size of the sensor gap
· Clutch is defective
B7
Overtemp sump
TCU measured a temperature in the oil
sump that is over the allowed threshold.
B9
Overspend engine
BA
Differential pressure oil filter
TCU measured a voltage at differential
pressure switch out of the allowed range
·Oil filter is polluted
· Cable/connector is broken or cable/
connector is contacted to battery voltage
or vehicle ground
·Differential pressure switch is defective
※ Some fault codes are not applied to this machine.
Reaction of the TCU
TCU shifts to neutral
OP mode : Limp home
If failure at another clutch
is pending
TCU shifts to neutral
OP mode : TCU shutdown
TCU shifts to neutral
OP mode : Limp home
If failure at another clutch
is pending
TCU shifts to neutral
OP mode : TCU shutdown
TCU shifts to neutral
OP mode : Limp home
If failure at another clutch
is pending
TCU shifts to neutral
OP mode : TCU shutdown
TCU shifts to neutral
OP mode : Limp home
If failure at another clutch
is pending
TCU shifts to neutral
OP mode : TCU shutdown
No reaction
OP mode : Normal
Retarder applies
OP mode : Normal
No reaction
OP mode : Normal
3-70
Possible steps to repair
·
Check pressure at clutch K3
·
Check main pressure in the system
·
Check sensor gap at internal speed
sensor
·
Check sensor gap at output speed
sensor
·
Check signal at internal speed
sensor
·
Check signal at output speed
sensor
Replace clutch
·
Check pressure at clutch K4
Check main pressure in the system
·
Check sensor gap at internal speed
sensor
·
Check sensor gap at turbine speed
sensor
·
Check signal at internal speed
sensor
·
Check signal at turbine speed
sensor
Replace clutch
·
Check pressure at clutch KV
·
Check main pressure in the system
·
Check sensor gap at internal speed
sensor
·
Check sensor gap at turbine speed
sensor
·
Check signal at internal speed
sensor
·
Check signal at turbine speed
sensor
·
Replace clutch
·
Check pressure at clutch KR
Check main pressure in the system
·
Check sensor gap at internal speed
sensor
·
Check sensor gap at turbine speed
sensor
·
Check signal at internal speed
sensor
·
Check signal at turbine speed
sensor
·
Replace clutch
·
Cool down machine
·
Check oil level
·
Check temperature sensor
-
·
Check oil filter
·
C h e c k w i r i n g f r o m T C U t o
differential pressure switch
·
C h e ck d i f fe r e n t i a l p r e s s u r e
switch(Measure resistance)