PINPOINT TEST JB: Secondary Ignition (COP): Introduction
WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
A damaged ignition system may cause high catalyst temperatures. Check the components next to the catalyst and muffler for heat damage.
NOTE:
There is additional information available on this procedure. Please copy and paste the following URL into your Internet browser: mms://multimedia.ford.com/seopts/Service_Tips/ignition3.wmv.
This pinpoint test is intended to diagnose the following:
- spark plugs (12405)
- secondary side of the coil
- exhaust spark plug wire (12286) (6.2L engine only)
FIRING ORDER FOR COIL ON PLUG APPLICATIONS
| Vehicle | Firing Order for Coil On Plug Applications |
|---|---|
| BASE, 4-cylinder applications | 1 3 4 2 |
| BASE, 6-cylinder applications | 1 4 2 5 3 6 |
| BASE, 8-cylinder applications | 1 3 7 2 6 5 4 8 |
| 5.0L Mustang, 6.2L F-150, F-250 - F-550 | 1 5 4 8 6 3 7 2 |
| BASE, 10-cylinder applications | 1 6 5 10 2 7 3 8 4 9 |