Diagnostic Aids
Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following:
- Ignition Coils
- Ignition Coil Harness
- Powertrain Control Module (PCM)
NOTE:
On all models with distributorless electronic ignition, manufacturer does not recommend checking ignition timing, as faulty readings are common and timing is not adjustable.
Fig 1: Identifying Coil-On-Plug Circuits & Connector Terminals (Blackwood, Continental, Escape 3.0L, Econoline & Excursion 6.8L, LS, Mustang 4.6L 4V, Navigator, Pickup 6.8L, & Thunderbird)
Fig 2: Identifying Coil-On-Plug Circuits & Connector Terminals (Crown Victoria, Econoline & Expedition 4.6L & 5.4L, Excursion 5.4L, Explorer & Mountaineer 4.6L, Grand Marquis, Mustang 4.6L 2V, Pickup 4.6L & 5.4L, & Town Car)
IGNITION COIL-TO-CYLINDER CORRELATION (COIL-ON-PLUG)
| Application & Cylinder No. | Ignition Coil | Coil Driver | PCM Terminal No. | DTC | ||
|---|---|---|---|---|---|---|
| 3.0L | ||||||
| Escape | ||||||
| 1 | A | A | 26 | P0351 | ||
| 4 | D | D | 1 | P0354 | ||
| 2 | B | B | 52 | P0352 | ||
| 5 | E | E | 27 | P0355 | ||
| 3 | C | C | 78 | P0353 | ||
| 6 | F | F | 53 | P0356 | ||
| LS | ||||||
| 1 | A | A | C31 | P0351 | ||
| 4 | D | B | C12 | P0354 | ||
| 2 | B | C | C23 | P0352 | ||
| 5 | E | D | C22 | P0355 | ||
| 3 | C | E | C13 | P0353 | ||
| 6 | F | F | C30 | P0356 | ||
| 3.9L | ||||||
| 1 | A | A | C31 | P0351 | ||
| 5 | E | B | C23 | P0355 | ||
| 4 | D | C | C13 | P0354 | ||
| 2 | B | D | C1 | P0352 | ||
| 6 | F | E | C12 | P0356 | ||
| 3 | C | F | C22 | P0353 | ||
| 7 | G | G | C30 | P0357 | ||
| 8 | H | H | C38 | P0358 | ||
| 4.6L (104-Pin PCM) & 5.4L | ||||||
| 1 | A | A | 26 | P0351 | ||
| 3 | C | B | 52 | P0353 | ||
| 7 | G | C | 78 | P0357 | ||
| 2 | B | D | 104 | P0352 | ||
| 6 | F | E | 1 | P0356 | ||
| 5 | E | F | 27 | P0355 | ||
| 4 | D | G | 53 | P0354 | ||
| 8 | H | H | 79 | P0358 | ||
| 4.6L (150-Pin PCM) | ||||||
| 1 | A | A | C31 | P0351 | ||
| 3 | C | B | C23 | P0353 | ||
| 7 | G | C | C13 | P0357 | ||
| 2 | B | D | C1 | P0352 | ||
| 6 | F | E | C12 | P0356 | ||
| 5 | E | F | C22 | P0355 | ||
| 4 | D | G | C30 | P0354 | ||
| 8 | H | H | C38 | P0358 | ||
| 6.8L | ||||||
| 1 | A | A | 26 | P0351 | ||
| 6 | F | B | 1 | P0356 | ||
| 5 | E | C | 52 | P0355 | ||
| 10 | J | D | 27 | P0360 | ||
| 2 | B | E | 78 | P0352 | ||
| 7 | G | F | 53 | P0357 | ||
| 3 | C | G | 104 | P0353 | ||
| 8 | H | H | 79 | P0358 | ||
| 4 | D | I | 102 | P0354 | ||
| 9 | I | J | 82 | P0359 | ||