21 TROUBLESHOOTING
138
Faults Possible cause Action
Engine has too little power Ignition system defective – Ignition coil - check the secondary
winding.
– Check the spark plug connector.
– Check the stator winding of the alter-
nator.
The engine dies during the trip Lack of fuel – Refuel. ( p. 46)
Fuse 1 blown – Change the fuses of individual electri-
cal power consumers. ( p. 113)
Fuse 4 blown – Change the fuses of individual electri-
cal power consumers. ( p. 113)
Engine overheats Coolant level low in cooling sys-
tem
– Check the cooling system for leaks.
– Check the coolant level. ( p. 120)
Insufficient airflow – Switch off engine when stationary.
Radiator fins very dirty – Clean radiator fins.
Foam formation in cooling sys-
tem
– Drain the coolant. ( p. 120)
– Refill the coolant. ( p. 121)
Bent radiator hose – Change the radiator hose.
Thermostat defective – Check the thermostat.
Guideline
Opening temperature: 70 °C (158 °F)
Defect in radiator fan system – Check the radiator fan fuse.
– Check fuse 4.
– Check the radiator fan.
Malfunction indicator lamp
lights up or flashes
Error in the electronic fuel
injection
– Check wiring for damage and electrical
plug-in connectors for corrosion and
damage.
– Read out the fault memory using the
KTM diagnostics tool.
High oil consumption Engine vent hose bent – Route the vent hose without bends or
replace it if necessary.
Engine oil level too high – Check the engine oil level. ( p. 129)
Engine oil too thin (low viscosi-
ty)
– Change the engine oil and oil filter,
clean the oil screen. ( p. 129)
Piston and cylinder worn – Measure the piston/cylinder mounting
clearance.
12-V battery discharged The 12-V battery is not being
charged by the alternator
– Check charging voltage.
– Check the stator winding of the alter-
nator.
Unwanted electrical power con-
sumer
– Check the open-circuit current.
Values in combination
instrument deleted (time, stop
watch, lap times)
The combination instrument
battery is empty
– Change combination instrument bat-
tery. ( p. 117)
The high beam, low beam, tail
light, position light, and license
plate lamp are not working
Fuse 2 blown – Change the fuses of individual electri-
cal power consumers. ( p. 113)
The horn, brake light, turn sig-
nal, and radiator fan (optional)
are not working
Fuse 3 blown – Change the fuses of individual electri-
cal power consumers. ( p. 113)
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