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3-57
Fault code
(Hex)
Meaning of the fault code
possible reason for fault detection
Reaction of the TCU
Possible steps to repair
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
TCU shifts transmission to
neutral if selector active
OP mode : Transmission
shutdown if
selector active
·
·
·
※
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
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
TCU shifts transmission to
neutral
OP mode : Transmission
shutdown
·
·
※
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
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
TCU shifts transmission to
neutral
OP mode : Transmission
shutdown
·
·
※
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
13
Logical error at engine derating device
TCU detected no reaction of engine while
derating device active
After selecting neutral,
TCU change to OP mode
limp home
·
※
Check engine derating device
This fault is reset after power up of
TCU
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
TCU shifts transmission to
neutral if selector active
OP mode : Transmission
shutdown if
elector active
·
·
※
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
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
Customer specific
·
·
·
Check the cable from TCU to
customer specific function No. 1
device
C h e c k 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
TRANSMISSION FAULT CODES
TRANSMISSION FAULT CODES
4)
4)
※
Some fault codes are not applied to this machine.
Summary of Contents for HL955
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