Fault
Code
(hex)
MEANING OF THE FAULT
CODE
Possible reason for fault
detection
Reaction of the
TCU
Possible steps
to repair
Remarks
S.C. TO GROUND AT
RETARDER /TORQUE
CONVERTER TEMP.
SENSOR INPUT
the measured voltage is
too low:
Cable is defective and is
contacted to vehicle
ground
Temperature sensor has
an internal defect
Connector pin is contacted
to vehicle ground
No reaction,
TCU uses default
temperature
OP-Mode: normal
Check the cable from
TCU to the sensor
Check the connectors
Check the temperature
sensor
TCU uses default value
OP-Mode: normal
Check the cable from
TCU to the sensor
Check the connectors
Check the parking brake
sensor
Check the cable from
TCU to the sensor
Check the connectors
Check the parking brake
sensor
S.C. TO BATTERY
VOLTAGE OR O.C. AT
PARKING BRAKE SENSOR
INPUT
The measured voltage is
too high:
Cable is defective and is
contacted to battery
voltage
Cable has no connection
to TCU
Sensor has an internal
defect
Connector pin is contacted
to battery voltage or is
broken
S.C. TO GROUND
PARKING BRAKE SENSOR
INPUT
The measured voltage is too
low:
Cable is defective and is
contacted to vehicle
ground
Sensor has an internal
defect
Connector pin is contacted
to vehicle ground
TCU uses default value
OP-Mode: normal
INCHSENSOR-SIGNAL
MISMATCH
The measured voltage from
CCO and CCO2 signal don’t
match:
Cable is defective
Sensor has an internal
defect
During inching mode:
TCU shifts to neutral
While not inching:
no change
OP-Mode: normal
Check the cable from
TCU to the sensor
Check the connectors
Check sensor
28
29
2A
2B
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