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

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.