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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 970 (Climate Control System - General Information And Diagnostics - (Except Hybrid)) >> Diagnostic Tests >> Climate Control System >> Pinpoint Tests >> Pinpoint Test H: No Operation in Lower Speeds >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Under normal conditions, when the blower motor switch is placed in the low, M1 or M2 positions and the function selector switch is in any position except OFF, the blower motor switch completes the circuit 261 (OG/BK) from the blower motor through the blower motor resistor, and to ground. The current flows through 1 to 3 resistors, depending on the selected blower motor speed.

Possible Causes

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