Pinpoint Tests Kt: Motor Electronics Cooling System (MECS) Pump: Introduction

WARNING: TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, INCLUDING INSTRUCTIONS TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE HARNESS TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

NOTE: Under normal operating conditions, the motor electronics cooling system should be able to maintain a temperature of approximately 11°C (20° F) over ambient temperature while driving.

This pinpoint test is intended to diagnose the following:

MECSP motor (8C290)
harness circuits: MECSP, VPWR, GND
TCM (7B012)

Fig 1: Identifying Motor Electronics Cooling System Pump (MECSP) Motor Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
3	MECSP (Motor Electronics Cooling System Pump)
1	GND (Ground)
2	VPWR (Vehicle Power)

Fig 2: Identifying Transmission Control Module-A (TCM-A) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
36	MECSP (Motor Electronics Cooling System Pump)