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Fault code
Meaning of the fault code
(Hex)
possible reason for fault detection
39
Logical error at internal speed input
TCU measures a internal 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
3A
S
S
.C. to battery voltage or O.C. at output
speed input
TCU measures a voltage higher than
12.5V at speed input pin
Cable is defective and is contacted to
battery voltage
Cable has no connection to TCU
Speed sensor has an internal defect
Connector pin is contacted to battery
voltage or has no contact
3B
S
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
L
L
ogical 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
T
T
urbine 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
Reaction of the TCU
OP mode : Substitute clutch
control
Special mode for gear selection
OP mode : Substitute clutch
control
If a failure is existing at turbine
speed,
TCU shifts to neutral
OP mode : lamp 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 : lamp 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 : lamp 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 : lamp home
3-20
Possible steps to repair
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
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 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
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