Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2002 Lincoln Town Car, 2002 Lincoln Navigator, 2002 Lincoln LS, 2002 Lincoln Continental, and 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following:
- Ignition Coil Pack(s)
- Ignition Coil Wiring Harness
- IGN START/RUN Circuit To Coil Pack(s)
- Powertrain Control Module (PCM)
NOTE:
Electronic ignition engine timing is entirely controlled by PCM. Electronic ignition timing is not adjustable. DO NOT attempt to check base timing. You will receive false readings.
Fig 1: Identifying 4-Tower Coil Pack Wiring Harness Connector Terminals (Cougar 2.0L, Escape 2.0L, Escort & Focus, & Ranger 2.3L)
Fig 2: Identifying Horizontal 6-Tower Coil Pack Wiring Harness Connector Terminals (Explorer Sport & Explorer Sport Trac, Explorer & Mountaineer 4.0L SOHC With 104-Pin PCM, & Ranger 4.0L)
Fig 3: Identifying Horizontal 6-Tower Coil Pack Wiring Harness Connector Terminals (Explorer & Mountaineer 4.0L SOHC With 150-Pin PCM)
Fig 4: Identifying Series 5 Coil Pack Wiring Harness Connector Terminals (Cougar 2.5L, Econoline 4.2L, Mustang 3.8L, Pickup 4.2L, Ranger 3.0L, Sable & Taurus 3.0L 2V, & Windstar)
NOTE:
Performing step 1) and comparing test results to IGNITION COIL-TO-CYLINDER CORRELATION (COIL PACK) table can help determine which coil is not firing.
IGNITION COIL-TO-CYLINDER CORRELATION (COIL PACK)
| Application & Cylinder No. | Coil Driver | PCM Terminal No. | DTC | |
|---|---|---|---|---|
| 4-Cylinder | ||||
| 1 | A | 26 | P0351 | |
| 3 | B | 52 | P0352 | |
| 4 | A | 26 | P0351 | |
| 2 | B | 52 | P0352 | |
| V6 (104-Pin PCM 4.0L SOHC) | ||||
| 1 | A | 26 | P0351 | |
| 4 | B | 52 | P0352 | |
| 2 | C | 78 | P0353 | |
| 5 | A | 26 | P0351 | |
| 3 | B | 52 | P0352 | |
| 6 | C | 78 | P0353 | |
| V6 (150-Pin PCM 4.0L SOHC) | ||||
| 1 | A | C31 | P0351 | |
| 4 | B | C23 | P0352 | |
| 2 | C | C13 | P0353 | |
| 5 | A | C31 | P0351 | |
| 3 | B | C23 | P0352 | |
| 6 | C | C13 | P0353 | |