20 TROUBLESHOOTING 101
Faults Possible cause Action
Engine overheats Coolant level low in cooling system – Check the cooling system for leaks.
– Check the coolant level. ( p. 88)
Insufficient airflow – Switch off engine when stationary.
Radiator fins very dirty – Clean radiator fins.
Foam formation in cooling system –
Drain the coolant. x ( p. 88)
–
Refill the coolant. x ( p. 89)
Bent radiator hose –
Change the radiator hose. x
Thermostat defective –
Check the thermostat. x
Guideline
Opening temperature: 70 °C (158 °F)
Defect in radiator fan system – Check the radiator fan fuse.
– Check fuse 4.
–
Check the radiator fan. x
FI warning lamp (MIL) lights
up/flashes
Defect in fuel injection system – Stop the motorcycle and identify the faulty part
using the blink code.
Info
See blink code
– Check the cabling for damage and the electri-
cal plug-in connections for corrosion and dam-
age.
– Read out the fault memory using the KTM diag-
nostics tool. x
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. 93)
Engine oil too thin (low viscosity) – Change the engine oil and oil filter and clean
the oil screens. x ( p. 94)
Piston and cylinder worn – Measure the piston/cylinder mounting clear-
ance. x
Battery discharged Battery is not being charged by alter-
nator
–
Check the charging voltage. x
–
Check the stator winding of the alternator. x
Undesired power consumer –
Check the closed current. x
Speedometer values deleted (time,
stop watch, lap times)
The battery in the speedometer is
discharged
– Change the speedometer battery. ( p. 86)
The high beam, low beam, parking
light, tail light, and license plate
lamp are not working
Fuse 3 blown – Change the fuses of individual power
consumers. ( p. 82)
The speedometer, horn, brake
light, turn signal, and radiator fan
(optional) are not working
Fuse 4 blown – Change the fuses of individual power
consumers. ( p. 82)
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