Pinpoint Test JF: Integrated Ignition Coil On Plug (COP) Coils A Through D Failure: Introduction

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

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 HYBRID 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:

ignition coils (12A366)
harness circuits: CD1, CD2, CD3, CD4, and IGN START/RUN
powertrain control module (PCM) (12A650)

IGNITION COIL TO CYLINDER CORRELATION

Related DTC	Cylinder Number	Ignition Coil	Coil Driver (CD)	PCM Pin
P0351	1	A	A	E70
P0352	2	B	D	E50
P0353	3	C	B	E66
P0354	4	D	C	E69

Fig 1: Injector Relay Connector

Courtesy of FORD MOTOR CO.

INJECTOR RELAY CONNECTOR PINS REFERENCE CHART

Pin	Circuit
2	GND (Ground)
1	IGN START/RUN (Ignition START/RUN)
3	B+ (Battery Positive Voltage)
5	VPWR (Vehicle Power)

Fig 2: Coil On Plug (COP) Connector

Courtesy of FORD MOTOR CO.

COP CONNECTOR PINS REFERENCE CHART

Pin	Circuit
1	COP (Coil On Plug)
2	IGN START/RUN (Ignition START/RUN)

Fig 3: Powertrain Control Module (PCM) Connector

Courtesy of FORD MOTOR CO.

PCM CONNECTOR PINS REFERENCE CHART

Pin	Circuit
B42	ISP-R (Ignition Switch Position Run)