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Home >> Dodge and Ram >> 2012 >> Journey SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (3.6L - DTCS P0481 To P06DD) >> 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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