Pinpoint Tests H: Fuel Control: 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.

This pinpoint test is intended to diagnose the following:

fuel injector(s) (9F593)
universal HO2S (9Y460)
vacuum system
harness circuit: UO2SPC11
PCM (12A650)

Fig 1: Identifying Universal HO2S-Front Connector
Courtesy of FORD MOTOR CO.

Pin	Circuit
1	UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1)

Fig 2: Identifying Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.

Pin	Circuit
E8	UO2SPC11 (Universal Oxygen Sensor Pumping Current Bank 1, Sensor 1)