Ignition Coil: Description and Operation
GENERAL INFORMATIONPower Transistor Built-in
1. Measurement at the primary coil resistance
Connect the negative (-) terminal of a 3 V power supply to terminal 2 of the power transistor; then check whether there is continuity between terminal 3 and terminal 2 when terminal 1 and the positive (+) terminal are connected and disconnected.
Replace the power transistor if there is a malfunction.
2. Measurement of the secondary coil resistance
Measure the resistance between the high-voltage terminals of the ignition coil.
Standard value: Approximately 12.1 kohm