Hyundai HL955 Manual page 129

Fault code Meaning of the fault code
(Hex) possible reason for fault detection
E3
S.C. to battery voltage at display output
TCU sends data to the display and
measures always a high voltage level on
the connector
· Cable or connectors are defective and
are contacted to battery voltage
· Display has an internal defect
E4
S.C. to ground at display output
TCU sends data to the display and
measures always a high voltage level on
the connector
· Cable or connectors are defective and
are contacted to battery voltage
· Display has an internal defect
E5
Communication failure on DeviceNet
F1
General EEPROM fault
TCU can't read non volatile memory
· TCU is defective
F2
Configuration lost
TCU has lost the correct configuration and
can't control the transmission
· Interference during saving data on non
volatile memory
·TCU is brand new or from another
vehicle
F3
Application error
Something of this application is wrong
F5
Clutch failure
AEB was not able to adjust clutch filling
parameters
·One of the AEB-Values is out of limit
F6
Clutch adjustment data lost
TCU was not able to read correct clutch
adjustment parameters
· Interference during saving data on non
volatile memory
·TCU is brand new
F7
Substitute clutch control
·Transmission input torque wrong
·Engine retarder torque wrong
·Speed signal (s) defective
※ Some fault codes are not applied to this machine.
Reaction of the TCU
No reaction
OP mode : Normal
No reaction
OP mode : Normal
Shift to neutral
OP mode : TCU shutdown
No reaction
OP mode : Normal
Transmission stay neutral
OP mode : TCU shutdown
Transmission stay neutral
OP mode : TCU shutdown
Transmission stay neutral
OP mode : TCU shutdown
No reaction,
Default values : 0 for AEB
Offsets used
OP mode : Normal
OP mode : Substitute
clutch control
3-73
Possible steps to repair
·
Check the cable from TCU to the
display
·
Check the connectors at the display
·
Change display
·
Check the cable from TCU to the
display
·
Check the connectors at the display
·
Change display
·
Check Omron master
·
Check wire of DeviceNet-Bus
·
Check cable to Omron master
·
Replace TCU
※
Often shown together with fault
code F2
· Reprogram the correct configurat-
ion for the vehicle (e.g. with cluster
controller,...)
·
Replace TCU
※
This fault occurs only if an test
engineer did something wrong in
the application of the vehicle
·
Check clutch
※
TCU shows also the affected clutch
on the display
· Execute AEB and brake sensor
calibration
·
Check engine retarder torque
·
Check speed sensors