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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (6.4L - DTCS P0522 To P1521) >> Diagnosis And Testing >> P0627-Fuel Pump Relay Circuit >> Theory Of Operation

Theory Of Operation

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The Fuel Pump Relay is controlled by the Powertrain Control Module (PCM). The PCM controls the fuel pump relay by grounding the (K31) Fuel Pump Control circuit.