Checking The Alternator - KTM 450 SX ATV 2010 Repair Manual

39/IGNITION SYSTEM

Checking the alternator

26.8
–
Connect the CDI controller. Connect the red measuring lead of the special tool to
the green wire. Connect the black measuring lead to the red wire.
–
Remove the spark plug connector.
–
Press the electric starter button.
Ignition pulse generator - output voltage - connector connected
Red - green at: 20 °C (68 °F)
» If the displayed value does not meet specifications:
–
Change the ignition pulse generator.
Condition
All plug-in contacts must be free of corrosion and firmly connected.
The battery must be charged.
–
Remove the fuel tank. (
–
Disconnect the electrical plug-in connector of the stator coil.
–
Measure the stator coil with a multimeter.
Stator coil - resistance
Alternator outputs against each
other
Alternator outputs against ground
» If the value displayed does not meet specifications:
–
Change the stator.
301576-10
–
Check the alternator output for voltage between the individual wires.
–
Connect the special tool to the multimeter.
Peak voltage adapter (58429042000) (
Info
When using the peak voltage adapter, the measurement range of the multi-
meter should be set to DCV.
–
Pull off the spark plug connector.
301575-10
–
Measure the charging coil with the peak voltage adapter.
–
Press the electric starter button.
Alternator output/plug disconnected
Alternator outputs against each
other
» If the value displayed does not meet specifications:
–
Change the stator.
1... 2 V
p. 64)
≤ 1 Ω
∞
p. 228)
9... 13 V
190