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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 954 (Automatic Transmission Cooler - (Hybrid)) >> Diagnostic Tests >> Transaxle Cooling >> Pinpoint Tests >> Pinpoint Test A: Motor Electronics (M/E) Cooling Pump Fault >> 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.

The motor electronics (M/E) coolant pump is electrically driven and controlled by the powertrain control module (PCM) through the M/E coolant pump relay. The PCM energizes the M/E coolant pump relay by pulling the M/E coolant pump output to ground when the ignition is in the ON position.

This pinpoint test is intended to diagnose the following:

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