Checking The Spark Plug Connector; Checking The Cdi Controller; Checking The Ignition Coil - KTM 65 SX 2009 Repair Manual

39/IGNITION SYSTEM

Checking the spark plug connector

22.5

Checking the CDI controller

22.6
Info
Never check the CDI controller with a conventional measuring instrument. This can destroy highly sensitive electronic compo-
nents.
–
Check the cable and plug-in connection of the CDI controller. A functional check of the CDI controller is only possible on an igni-
tion test bench.

Checking the ignition coil

22.7
–
On the cable harness side of plug FD, measure pin 7 against ground.
Resistance
» If the measured value does not equal the specified value:
–
Check the wiring harness.
–
Change the generator.
–
On the cable harness side of plug FD, measure pin 9 against ground.
Resistance
» If the measured value does not equal the specified value:
–
Check the wiring harness.
–
Change the generator.
–
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 must be set to DCV.
–
On the cable harness side of plug FD, measure pin 7 against pin 9. Activate the
kickstarter.
Voltage - kickstarter confirmed
» If the measured value does not equal the specified value:
–
Change the generator.
–
Measure the removed spark plug connector with a multimeter.
Spark plug connector
Resistance at: 20 °C (68 °F)
» If the displayed value does not equal the specification:
–
Change the spark plug connector.
300884-10
Condition
The fuel tank is removed.
–
Remove the spark plug connector.
–
Disconnect the ignition coil.
–
On the component side, measure the connection of the ignition coil against ground.
Ignition coil
Resistance of primary winding at:
20 °C (68 °F)
» If the measured value does not equal the specified value:
–
Change the ignition coil.
300881-10
∞
∞
p. 127)
≥ 40 V
4.3... 5.7 kΩ
0.25... 0.35 Ω
103