Hyundai HL955 Manual page 117

Fault code Meaning of the fault code
(Hex) possible reason for fault detection
3B
S.C. to ground at output speed input
TCU measures a voltage less than 1.00V
at speed input pin
· Cable/connector is defective and is
contacted to vehicle ground
· Speed sensor has an internal defect
3C
Logical error at output speed input
TCU measures a turbine speed over a
threshold and at the next moment the
measured speed is zero
· Cable/connector is defective and has
bad contact
· Speed sensor has an internal defect
·Sensor gap has the wrong size
3D
Turbine speed zero doesn't fit to other
speed signals
3E
Output speed zero doesn't fit to other
speed signals
If transmission is not neutral and the
shifting has finished,
TCU measures output speed zero and
turbine speed or internal speed not equal
to zero.
· Speed sensor has an internal defect
·Sensor gap has the wrong size
54
DCT1 timeout
Timeout of CAN-message DCT1 from
display computer
· Interference on CAN-Bus
· CAN wire/connector is broken
· CAN wire/connector is defective and
has contact to vehicle ground or battery
voltage
55
JSS timeout
Timeout of CAN-message JSS from
joystick steering controller
· Interference on CAN-Bus
·CAN wire/connector is broken
·CAN wire/connector is defective and
has contact to vehicle ground or battery
voltage
56
Engine CONF timeout
Timeout of CAN-message engine CONF
from engine controller
·Interference on CAN-Bus
· CAN wire/connector is broken
· CAN wire/connector is defective and
has contact to vehicle ground or battery
voltage
※ Some fault codes are not applied to this machine.
Reaction of the TCU
Special mode for gear
selection
OP mode : Substitute clutch
control
If a failure is existing at
turbine speed,
TCU shifts to neutral
OP mode : Limp home
Special mode for gear
selection
OP mode : Substitute clutch
control
If a failure is existing at
turbine speed,
TCU shifts to neutral
OP mode : Limp home
-
Special mode for gear
selection
OP mode : Substitute clutch
control
If a failure is existing at
turbine speed,
TCU shifts to neutral
OP mode : Limp home
OP mode : Normal
TCU shifts to neutral while
joystick steering is active
OP mode : Normal
OP mode : Substitute
clutch control
3-61
Possible steps to repair
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the speed sensor
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the speed sensor
·
Check the sensor gap
※
This fault is reset after power up of
TCU
· Not used
·
Check the sensor signal of output
speed sensor
·
Check the sensor gap of output
speed sensor
·
Check the cable from TCU to the
sensor
※
This fault is reset after power up of
TCU
·
Check display computer
·
Check wire of CAN-Bus
·
Check cable to display computer
·
Check joystick steering controller
·
Check wire of CAN-Bus
·
Check cable to joystick steering
controller
·
Check engine controller
·
Check wire of CAN-Bus
·
Check cable to engine controller