Pinpoint Test JC: Secondary Ignition (Coil Pack): Introduction

WARNING: This page is about a different variant/trim than selected.

This pinpoint test is intended to diagnose the following:

spark plugs (12405)
spark plug wires (12280, 12281)

Fig 1: Coil Pack Spark Diagram
Courtesy of FORD MOTOR CO.

Focus, Taurus 2V, 4.0L Mustang, Ranger, Monterey, Freestar, 4.0L Explorer, 4.0L Mountaineer, 4.2L F-Series.