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Openai/69540633-2650-8006-9f7f-3526b70a3503
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=== Assistant: Ignition coil power is present with key ON. === Ignition coil power is present with key ON. * The coils receive switched 12 V from the key/relay as soon as the key is in RUN/START. * The ECU does NOT supply power to the coils. * The ECU only controls the ground (driver) side of each coil. So: * No crank signal needed for coil power * A crank signal is required only for the ECU to fire the coils, not to power them Key ON = coil has power Crank signal = coil gets triggered
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