Pinpoint Test JB: Secondary Ignition (Cop): Introduction
CAUTION:
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
FIRING ORDER SPECIFICATION
| Vehicle | Firing Order for Coil On Plug Applications |
|---|---|
| BASE, 4-cylinder applications | 1 3 4 2 |
| Escape 3.0L, Five Hundred, Freestyle, Mariner, Montego, Fusion, Milan, Zephyr | 1 4 2 5 3 6 |
| LS | 1 5 4 2 6 3 7 8 |
| 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 |