Symptom Chart

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
Motor electronics cooling system (MECS) overheating	Clogged moter electronic (M/E) cooler or hoses.	INSPECT the M/E cooler and hoses for damage or plugging. INSTALL a new M/E cooler or hoses as necessary.
	M/E cooling system leaks.	INSPECT the M/E cooler and hoses for leaks. REPAIR or INSTALL new components as necessary.
	M/E coolant pump does not operate	CHECK the M/E coolant pump secondary electrical system. GO to PINPOINT TEST A .
	Radiator cooling fans.	CHECK the cooling fans. REFER to INTRODUCTION -- HYBRID ESCAPE & HYBRID MARINER .
	Internal transaxle concerns.	REFER to INTRODUCTION -- HYBRID ESCAPE & HYBRID MARINER .
M/E coolant pump runs continuously	Shorted circuit(s). M/E coolant pump relay.	GO to PINPOINT TEST A .
M/E coolant pump runs continuously	High MECS temperature.	REFER to INTRODUCTION -- HYBRID ESCAPE & HYBRID MARINER .