PINPOINT TEST JB: Secondary Ignition (COP): Introduction
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
A malfunctioning ignition system may cause high catalyst temperatures. Check the components next to the catalyst and muffler for heat damage.
This pinpoint test is intended to diagnose the following:
- spark plugs (12405)
- secondary side of the coil
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Edge, MKX, MKZ, Taurus, Taurus X, Sable |
A | 3 | IGN START/RUN |
| Escape/Mariner, Focus, Fusion, Milan, Mustang 5.4L |
B | 2 | IGN START/RUN |
| All other vehicles | B | 1 | IGN START/RUN |
| 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 |
| BASE, 10-cylinder applications | 1 6 5 10 2 7 3 8 4 9 |