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

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

Courtesy of FORD MOTOR CO.

Harness Side

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

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

Courtesy of FORD MOTOR CO.

Harness Side

Circuit	Pin
MECSP (Motor Electronics Cooling System Pump)	36