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Ignition Coil (With Power Transistor)

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The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit.

Fig 1: Identifying Ignition Coil (With Power Transistor)
G09140381Courtesy of NISSAN NORTH AMERICA, INC.
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