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
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
activ
OP-Mode: transmission
shutdown if selector
activ
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 signal for
the direction at the shift
lever
16
LOGICAL 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
OP-Mode: normal
check the cables from
TCU to feedback axle
connection switch
check signals of the
feedback axle
connection switch
Fault
Code
(hex)
MEANING OF THE FAULT
CODE
Possible reason for fault
detection
Reaction of the
TCU
Possible steps
to repair
Remarks