Hyundai HL955 Manual page 113

4) 4) TRANSMISSION FAULT CODES TRANSMISSION FAULT CODES
Fault code Meaning of the fault code
(Hex) possible reason for fault detection
10
Logical error at direction select signal
3rd shift lever
T C U d e t e c t e d a w r o n g s i g n a l
combination for the direction
·Cable from shift lever 3 to TCU is broken
· Cable is defective and is contacted to
battery voltage or vehicle ground
·Shift lever is defective
11
Logical error at gear range signal
TCU detected a wrong signal combination
for the gear range
·Cable from shift lever to TCU is broken
· Cable is defective and is contacted to
battery voltage or vehicle ground
·Shift lever is defective
12
Logical error at direction select signal
TCU detected a wrong signal combination
for the direction
· Cable from shift lever to TCU is broken
· Cable is defective and is contacted to
battery voltage or vehicle ground
·Shift lever is defective
13
Logical error at engine derating device
TCU detected no reaction of engine while
derating device active
15
Logical error at direction select signal 2
shift lever
TCU detected a wrong signal combination
for the direction
·Cable from shift lever 2 to TCU is broken
· Cable is defective and is contacted to
battery voltage or vehicle ground
·Shift lever is defective
17
S.C. to ground at customer specific
function No. 1 (ride control)
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
·Customer specific function No. 1 device
has an internal defect
·Connector pin is contacted to vehicle
ground
※ Some fault codes are not applied to this machine.
Reaction of the TCU
TCU shifts transmission to
neutral if selector active
OP mode : Transmission
shutdown if
selector active
TCU shifts transmission to
neutral
OP mode : Transmission
shutdown
TCU shifts transmission to
neutral
OP mode : Transmission
shutdown
After selecting neutral,
TCU change to OP mode
limp home
TCU shifts transmission to
neutral if selector active
OP mode : Transmission
shutdown if
elector active
Customer specific
3-57
Possible steps to repair
·
Check the cables from TCU to shift
lever 3
·
Check signal combinations of shift
lever positions F-N-R
·
If shift lever is a CAN shift lever
check CAN cable/shifter/device
※
Fault is cleared if TCU detects a
valid neutral signal for the direction
at the shift lever
·
Check the cables from TCU to shift
lever
·
Check signal combinations of shift
lever positions for gear range
※
Failure cannot be detected in
systems with DW2/DW3 shift lever.
Fault is taken back if TCU detects a
valid signal for the position
·
Check the cables from TCU to shift
lever
·
Check signal combinations of shift
lever positions F-N-R
※
Fault is taken back if TCU detects a
valid signal for the direction at the
shift lever
·
Check engine derating device
※
This fault is reset after power up of
TCU
·
Check the cables from TCU to shift
lever 2
·
Check signal combinations of shift
lever positions F-N-R
※
Fault is taken back if TCU detects a
valid neutral signal for the direction
at the shift lever
·
Check the cable from TCU to
customer specific function No. 1
device
·
C h e ck t h e c o n n e c t o r s f r o m
customer specific function No. 1 to
TCU
·
Check the resistance of customer
specific function No. 1 device