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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 425 (5.7L - DTCS P0205 To P058B - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P0481-Cooling Fan 2 Control Circuit/Open >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Module (PCM) controls the Cooling Fan 2 (High Speed) Relay by grounding the (N112) High Rad Fan Relay Control circuit when it is determined that high speed fan operation is required.

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