S0607900C
Page 26
Transmission Error Codes (ZF)
B2 Slippage at clutch K2.
TCU calculates a differential
speed at closed clutch K2. If
this calculated value is out of
range, TCU interprets this as
slipping clutch.
• Low pressure at clutch K2.
• Low main pressure.
• Wrong signal at internal
speed sensor.
• Wrong signal at output
speed sensor.
• Sensor gap is incorrect.
• Clutch is defective.
TCU shifts to neutral.
OP-Mode: limp
home.
If failure at another
clutch is pending.
TCU shifts to neutral.
OP-Mode: TCU shut
down.
Check pressure at
clutch K2.
Check main
pressure in system.
Check sensor gap at
internal speed
sensor.
Check sensor gap at
output speed sensor.
Check signal at
internal speed
sensor.
Check signal at
output speed sensor.
Replace clutch.
---------------
B3 Slippage at clutch K3.
TCU calculates a differential
speed at closed clutch K3. If
this calculated value is out of
range, TCU interprets this as
slipping clutch.
• Low pressure at clutch K3.
• Low main pressure.
• Wrong signal at internal
speed sensor.
• Wrong signal at output
speed sensor.
• Sensor gap is incorrect.
• Clutch is defective.
TCU shifts to neutral.
OP-Mode: limp
home.
If failure at another
clutch is pending.
TCU shifts to neutral.
OP-Mode: TCU shut
down.
Check pressure at
clutch K3.
Check main
pressure in system.
Check sensor gap at
internal speed
sensor.
Check sensor gap at
output speed sensor.
Check signal at
internal speed
sensor.
Check signal at
output speed sensor.
Replace clutch.
---------------
Fault
Code
(hex)
Meaning of the Fault Code
(Possible reason for fault
detection.)
Reaction of the
TCU
Possible Steps to
Repair
Remarks
* Only Mega 400-III PLUS
** Only Series "V"
Gray shaded boxes are error codes for other applications. They are only given for general reference purposes.
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