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Help with codes and no power

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With key off, unplug all 3 engine ECM connectors and check for oil of antifreeze in the harness connection. especially the top right one. This code is a low voltage code for the Behr electric engine fan. Check the engine fan connection plug and wires. Does the fan ever disengage?

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No, it is always on. The plug is connected; but, the truck threw a belt a couple of months ago and disconnected the plug, which might of damaged it. I don't know how to verify if the fan clutch is working correctly; I do not have a wiring diagram, or a service manual. I will check the condition of the plugs on Monday for dirt and debris.

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