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Home >> Chrysler >> 2007 >> 300 V6-2.7L VIN R >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Module-Powertrain Control >> Operation >> Operation - Ignition Circuit Sense

Operation - Ignition Circuit Sense






OPERATION - IGNITION CIRCUIT SENSE

The ignition circuit sense input tells the PCM the ignition switch has energized the ignition circuit.

Battery voltage is also supplied to the PCM through the ignition switch when the ignition is in the RUN or START position. This is referred to as the "ignition sense" circuit and is used to "wake up" the PCM.
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