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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1262 (Automatic Transmission Cooler - (Hybrid)) >> Diagnosis And Testing >> Transaxle Cooling >> Pinpoint Tests >> Pinpoint Test A: Motor Electronics Cooling System (MECS) Overheating >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The Motor Electronics Cooling System (MECS) pump is electrically driven and controlled by the PCM through the MECS  pump relay. The PCM energizes the MECS  pump relay by pulling the MECS  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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