38
S.C. TO GROUND AT INTERNAL
SPEED INPUT
TCU measures a voltage
less than 0.45V at speed
input pin
cable / connector is
defective and is contacted
to vehicle ground
speed sensor has an
internal defect
OP-Mode: substitute
clutch control
check the cable from
TCU to the sensor
check the connectors
check the speed
sensor
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
OP-Mode: substitute
clutch control
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
3A
S.C. TO BATTERY VOLTAGE OR
O.C. AT OUTPUT SPEED INPUT
TCU measures a voltage
higher than 12.5 V 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
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
check the cable from
TCU to the sensor
check the connectors
check the speed
sensor
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
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
check the cable from
TCU to the sensor
check the connectors
check the speed
sensor
Fault
Code
(hex)
MEANING OF THE FAULT
CODE
Possible reason for fault
detection
Reaction of the
TCU
Possible steps
to repair
Remarks
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