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(4)
Transmission error codes
Fault code
Meaning of the fault code
(Hex)
possible reason for fault detection
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
L
L
ogical 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
L
L
ogical 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
16
L
L
ogical error at axle connection
Feedback axle connection measured by TCU
and output signal axle connection don't fit
·Axle can't be connected or disconnected
due to mechanical problem
·One of the cables from feedback axle
connection switch to TCU is broken
21
S
S
.C. to battery voltage at clutch cut off
input
The measured voltage is too high:
·Cable is defective and is contacted to
battery voltage
·Clutch cut off sensor has an internal
defect
·Connector pin is contacted to battery
voltage
22
S
S
.C. to ground or O.C. at clutch cut off
input
The measured voltage is too low:
·Cable is defective and is contacted to
vehicle ground
·Cable has no connection to TCU
·Clutch cut off sensor has an internal
defect
·Connector pin is contacted to vehicle
ground or is broken
Reaction of the TCU
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
OP mode : Normal
Clutch cut off function is
disabled
OP mode : Normal
Clutch cut off function is
disabled
OP mode : Normal
3-16
Possible steps to repair
·
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 cables from TCU to
feedback axle connection switch
·
Check signals of the feedback
axle connection switch
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the clutch cut off sensor
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the clutch cut off sensor
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