Checking The Spark Plug Connector; Checking The Cdi Controller; Checking The Ignition Pulse Generator - KTM 450 SX ATV 2010 Repair Manual

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39/IGNITION SYSTEM

Checking the spark plug connector

26.5

Checking the CDI controller

26.6
Info
Never check the CDI controller with a conventional measuring instrument. This may result in the destruction of highly sensitive
electronic components.

Checking the ignition pulse generator

26.7
Measure the dismantled spark plug connector with a multimeter.
Spark plug connector
Resistance at: 20 °C (68 °F)
»
If the value displayed does not meet specifications:
Change the spark plug connector.
301473-10
Check the cables and plug-in connections of the CDI controller. A functional check
of the CDI controller is only possible on an ignition test bench.
301570-10
Condition
All plug contacts must be free of corrosion and the plug-in connectors must be firmly
seated.
The battery must be charged.
Remove the fuel tank. (
Disconnect the electrical plug-in connector connecting the ignition pulse generator
to the CDI controller.
Measure the resistance of the ignition pulse generator using a multimeter.
Ignition pulse generator - resistance
Red - green at: 20 °C (68 °F)
Red - ground at: 20 °C (68 °F)
»
If the measured value differs from the set value:
Change the ignition pulse generator.
301577-10
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.
Connect the red measuring lead of the special tool to the green wire. Connect the
black measuring lead to the red wire.
Press the electric starter button.
Ignition pulse generator - output voltage - connector disconnected
Red - green at: 20 °C (68 °F)
»
If the displayed value does not meet specifications:
Change the ignition pulse generator.
301571-10
3.75... 6.25 kΩ
p. 64)
80... 120 Ω
p. 228)
1.5... 3 V
189

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505 sx atv 20102010 450 sx2010 505 sx

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