Pinpoint Test JB: Secondary Ignition (Cop): Introduction
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Lincoln Town Car, and 2009 Lincoln MKZ. 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.
This pinpoint test is intended to diagnose the following:
- spark plugs (12405)
- secondary side of the coil
FIRING ORDER REFERENCE
| 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 |