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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (3.6L - DTCS P0481 To P06DE) >> Diagnosis and Testing >> P0645-A/C Clutch Relay Circuit >> Theory of operation

Theory of operation

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The Powertrain Control Module (PCM) receives a signal requesting the A/C Compressor to be turned on from the HVAC. When the PCM receives this request it grounds the control side of the relay.

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