Coil Test
- Turn ignition off. Disconnect ignition coil electrical connections. Using a DVOM, measure resistance of primary and secondary coil circuits. Measure primary circuit resistance between battery terminal and terminal for cylinders being checked. See Fig 1 .
- Measure secondary circuit resistance across coil towers. See Fig 1 . See IGNITION COIL RESISTANCE table. If resistance is within specification, ignition coil is okay. If resistance is not within specification, replace ignition coil.
IGNITION COIL RESISTANCE - Ohms @ 70-80°F (21-27°C)
| Application | Primary | Secondary |
|---|---|---|
| Concorde, Intrepid & Vision | .45-.65 | 7000-15,800 |