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Home >> Infiniti >> 2009 >> G37 Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - G37 (Convertible) - System & Component Checks, Ecu Diagnosis Information, Symptom Diagnosis, Precaution & Preparations, Periodic Maintenance, Removal And Installation, Service Data And Specifications (SDS) >> Ignition Signal >> Description
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Ignition Signal: Description

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.

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